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South Dakota Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in South Dakota is much lower than the national average. The risk of tornado damage in South Dakota is lower than the national average.

Topics:Earthquake IndexVolcano IndexTornado IndexOther Weather Extremes EventsVolcanos NearbyHistorical Earthquake EventsHistorical Tornado Events

Earthquake Index, #42

South Dakota
0.05
U.S.
1.81

The earthquake index value is calculated based on historical earthquake events data using USA.com algorithms. It is an indicator of the earthquake level in a region. A higher earthquake index value means a higher chance of an earthquake.

Volcano Index, #14

South Dakota
0.0000
U.S.
0.0023

The volcano index value is calculated based on the currently known volcanoes using USA.com algorithms. It is an indicator of the possibility of a region being affected by a possible volcano eruption. A higher volcano index value means a higher chance of being affected.

Tornado Index, #26

South Dakota
114.73
U.S.
136.45

The tornado index value is calculated based on historical tornado events data using USA.com algorithms. It is an indicator of the tornado level in a region. A higher tornado index value means a higher chance of tornado events.

Other Weather Extremes Events

A total of 18,426 other weather extremes events from 1950 to 2010 were recorded in South Dakota. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:261Cold:64Dense Fog:6Drought:25
Dust Storm:0Flood:915Hail:9,981Heat:6Heavy Snow:239
High Surf:0Hurricane:0Ice Storm:13Landslide:0Strong Wind:453
Thunderstorm Winds:5,718Tropical Storm:0Wildfire:57Winter Storm:259Winter Weather:133
Other:296 

Volcanos Nearby

No volcano is found in or near South Dakota.

Historical Earthquake Events

A total of 7 historical earthquake events that had recorded magnitudes of 3.5 or above found in South Dakota.

DateMagnitudeDepth (km)LatitudeLongitude
1964-03-285.14142.9-101.6
1964-03-285.14142.9-101.6
1983-03-044.6544.21-99.41
1967-11-234.4N/A43.7-99.4
1982-11-154.3543.01-97.85
1966-06-264.1N/A44.3-103.4
1982-07-113.6544.01-96.72

Historical Tornado Events

A total of 289 historical tornado events that had recorded magnitude of 2 or above found in South Dakota.

DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
1965-05-08543°00'N / 99°43'W43°26'N / 99°38'W30.10 Miles1760 Yards012.5M0Tripp
1965-06-07443°10'N / 97°14'W43°11'N / 97°13'W002.5M0Yankton
1965-06-07443°11'N / 97°13'W43°14'N / 97°04'W7.80 Miles647 Yards102.5M0Turner
1969-07-07445°17'N / 103°45'W1.80 Miles133 Yards0025K0Harding
1998-05-30443°45'N / 97°37'W43°42'N / 97°26'W7.00 Miles1600 Yards615017.0M400KMccook
 Brief Description: The tornado from Hanson County destroyed most of Spencer as it strengthened and continued to grow. Most homes, other buildings, and other structures in Spencer were completely levelled. Debris and belongings were scattered over a large area, and one receipt blown from Spencer was found just west of Chandler, MN about 80 miles east of Spencer. The tornado killed 6 and injured 150 in Spencer. The tornado continued southeast from Spencer, widened, then weakened, and dissipated 4 miles southwest of Salem with another tornado then forming from the same storm. The tornado caused additional damage to trees, power lines, crops, and buildings on farms after moving southeast of Spencer. F70PH, F77PH, F93PH, F68PH, M62PH, F85PH
2002-06-23445°41'N / 98°26'W45°49'N / 98°23'W9.00 Miles900 Yards0000Brown
 Brief Description: A powerful supercell thunderstorm produced six tornados from eastern McPherson county and across northern Brown county during the evening hours of June 23rd. The first weak tornado (F0) touched down briefly 6.4 miles northeast of Leola and resulted in no damage. The second tornado (F1) touched down 8.5 miles northeast of Leola and crossed over into Brown county where it dissipated 9 miles northwest of Barnard. This tornado brought down many trees and a barn and caused damage to the siding and the roof of a farmhouse in McPherson county and caused no damage in Brown county. A third weak satellite tornado (F0) occurred following the dissipation of the second tornado and resulted in no damage. A fourth strong tornado (F3) developed 6 miles west of Barnard and moved east and dissipated 3 miles southeast of Barnard. This tornado brought down some high power lines along with a support tower and tossed a pickup truck 100 yards into a group of trees. The pickup truck was totaled. The tornado caused extensive damage to two farmhouses, several farm buildings, and farm equipment. One farmhouse lost its garage and most of its roof with many trees completely snapped off down low and debarked. The fifth tornado developed 5 miles southeast of Barnard and became a violent tornado (F4). This tornado caused damage to one farmhouse, several outbuildings, trees, and equipment as it moved northeast and strengthened. The tornado then completely demolished two unoccupied homes, several outbuildings, many trees, along with destroying or damaging some farm equipment before dissipating 7.6 miles northeast of Barnard. Also, a sixth weak satellite tornado (F0) occurred with this violent tornado and caused no damage. This was the first F4 tornado recorded in Brown county and one of few recorded in South Dakota. The total estimated property loss exceeded a million dollars.
2003-06-24444°17'N / 97°46'W44°25'N / 97°43'W10.00 Miles1000 Yards043.0M0Kingsbury
 Brief Description: A tornado destroyed or heavily damaged all buildings, other structures, and vehicles in the small town of Manchester. Propane and fuel oil tanks were destroyed. Many homes were stripped to the foundation. Of the six residents of the town, four were injured and were transported to hospitals. Three were deemed to be seriously injured, but non of the injuries were life threatening. One of the injured was in a basement, one was blown out of the home on the way to the same basement, and two were in a mobile home which was destroyed. The tornado damaged crops, trees, and power lines south of Manchester prior to reaching the town. The tornado also heavily damaged several farms north of Manchester, including two farms on which several buildings including the homes were destroyed. One of the farms was a "Centennial Farm". About 12 cattle were killed and others injured. The amount of crop damage was not known. During its path, the tornado was observed to have multiple vortices. The tornado was observed and video taped by numerous storm chasers and researchers. Researchers also deployed weather sensors around the town of Manchester. One of these sensors recorded a 100 millibar pressure drop as the tornado passed.
2010-05-22445°27'N / 99°42'W45°28'N / 99°38'W4.00 Miles1200 Yards000K0KEdmunds
 Brief Description: EVENT NARRATIVE: An EF2 tornado in eastern Walworth county crossed into western Edmunds county and intensified into a large EF4 tornado as it struck several farms in its path. At the first farm, several large cottonwood trees were uprooted along with damage to several trailers. Three grain bins were also destroyed with debris located several hundred yards to the northeast. The residence suffered some shingle and antenna damage. The tornado then tracked northeast to a second farm where several outbuildings were damaged or destroyed along with widespread tree damage. The main residence at this location suffered no damage. Several grain cars were also rolled about 100 yards into the trees behind the house. The large tornado continued to track northeast to a third farm to the north of Bowdle. The main residence suffered major damage to walls with part of the roof structure removed. Widespread tree damage was sustained with many of the trees completely debarked with only the stumps of the largest branches remaining. Two large garages were completely destroyed with the concrete slab wiped clean. The vehicles in one garage were rolled or tossed from 25 to 100 yards away. It is estimated that one vehicle flew through the air 75 to 100 yards resting in the tree shelter belt to the north of the residence. Several other outbuildings were completely destroyed. The tornado then toppled six to eight metal power transmission towers as it moved to the north of the farm. One tower was sheared off from the concrete footings and traveled an estimated 400 yards. Ground scouring was visible along the path of these towers. The large tornado continued to track east crossing over State Highway 47 where a state radio tower was toppled. The tornado lifted shortly thereafter. The highest wind speeds were estimated to be from 166 to 200 mph. EPISODE NARRATIVE: Several supercell thunderstorms developed along a very strong warm front and produced nine tornadoes from Akaska to Bowdle to Hecla. The largest of the tornadoes was an EF4 tornado which occurred near Bowdle. This tornado produced devastating damage in the Bowdle area. The other tornadoes ranged from EF0 to EF2 and caused extensive tree and building damage. Nearly one-hundred power poles were downed along with several high line towers leaving nearly a thousand customers without power. Also, very strong straight line winds and large hail up to the size of golfballs affected parts of the area causing some damage.
1954-06-18342°51'N / 97°53'W42°59'N / 97°46'W10.60 Miles33 Yards0025K0Bon Homme
1954-06-18343°02'N / 97°30'W43°01'N / 97°27'W0025K0Yankton
1954-06-18343°03'N / 97°19'W43°08'N / 97°05'W12.80 Miles33 Yards0025K0Yankton
1954-06-19343°29'N / 96°43'W43°30'N / 96°40'W003K0Lincoln
1956-08-06343°25'N / 102°11'W43°10'N / 101°44'W28.30 Miles100 Yards0025K0Shannon
1957-06-09345°02'N / 99°08'W1.00 Mile33 Yards0025K0Faulk
1959-05-30342°53'N / 97°17'W0025K0Yankton
1961-06-21345°28'N / 98°14'W44°59'N / 97°59'W35.40 Miles33 Yards003K0Brown
1961-06-21344°59'N / 97°59'W44°33'N / 97°32'W37.10 Miles33 Yards17250K0Clark
1961-06-21344°33'N / 97°32'W44°00'N / 97°05'W43.90 Miles33 Yards00250K0Kingsbury
1961-06-21344°00'N / 97°05'W44°31'N / 96°43'W39.90 Miles33 Yards00250K0Minnehaha
1962-05-14343°00'N / 99°02'W43°06'N / 98°55'W8.50 Miles1760 Yards000K0Charles Mix
1962-05-14343°24'N / 98°23'W43°30'N / 98°14'W9.70 Miles1760 Yards000K0Douglas
1962-05-14344°30'N / 98°14'W43°38'N / 98°01'W60.70 Miles1760 Yards020K0Davison
1962-05-15343°12'N / 99°24'W000K0Gregory
1962-05-16343°04'N / 98°57'W020K0Charles Mix
1962-05-21343°00'N / 98°35'W43°00'N / 98°35'W000K0Charles Mix
1962-05-21343°43'N / 98°03'W1.00 Mile167 Yards0322.5M0Davison
1962-06-05342°52'N / 97°54'W42°59'N / 97°47'W9.50 Miles1760 Yards00250K0Bon Homme
1963-06-06343°08'N / 101°56'W43°18'N / 101°30'W24.40 Miles1167 Yards00250K0Bennett
1963-07-18344°59'N / 103°26'W44°57'N / 103°23'W2.30 Miles33 Yards00250K0Butte
1965-05-08343°10'N / 99°20'W1.50 Miles20 Yards003K0Gregory
1965-05-20345°55'N / 98°29'W45°58'N / 98°25'W3.80 Miles400 Yards0025K0Brown
1965-05-24343°30'N / 97°30'W43°34'N / 97°20'W9.00 Miles20 Yards003K0Mccook
1965-06-07342°55'N / 96°48'W000K0Union
1965-06-26342°58'N / 97°49'W43°25'N / 97°28'W35.60 Miles163 Yards00250K0Bon Homme
1965-07-12344°15'N / 104°03'W44°13'N / 103°49'W11.40 Miles1600 Yards00250K0Lawrence
1965-07-18344°36'N / 103°33'W0025K0Meade
1966-07-31346°00'N / 99°25'W45°43'N / 99°05'W25.10 Miles280 Yards24250K0Mcpherson
1968-06-20345°32'N / 100°13'W45°30'N / 100°02'W8.80 Miles200 Yards000K0Walworth
1968-06-20345°30'N / 100°02'W000K0Walworth
1968-06-20343°41'N / 97°59'W43°39'N / 97°47'W9.90 Miles2667 Yards000K0Davison
1969-06-25345°27'N / 98°05'W1.50 Miles133 Yards06250K0Brown
1970-06-15344°09'N / 96°57'W44°10'N / 96°54'W00250K0Lake
1971-07-03344°16'N / 99°14'W44°15'N / 99°17'W0025K0Hand
1971-07-09344°05'N / 99°36'W000K0Lyman
1971-07-09343°53'N / 99°37'W020K0Lyman
1971-07-24343°46'N / 99°19'W2.50 Miles300 Yards000K0Brule
1973-07-01345°15'N / 98°30'W0.30 Mile30 Yards1325K0Brown
1973-07-23344°21'N / 100°21'W2.50 Miles500 Yards0102.5M0Hughes
1981-08-03343°17'N / 97°09'W43°06'N / 97°05'W12.80 Miles440 Yards00250K0Turner
1983-06-21345°55'N / 100°17'W45°54'N / 100°07'W6.00 Miles600 Yards04250K0Campbell
1983-06-21345°24'N / 101°43'W45°26'N / 101°34'W6.00 Miles300 Yards00250K0Ziebach
1983-07-18344°54'N / 97°10'W0.50 Mile100 Yards002.5M0Codington
1984-05-12344°53'N / 97°44'W44°50'N / 97°30'W14.00 Miles1320 Yards002.5M0Clark
1984-05-12344°50'N / 97°30'W44°48'N / 97°15'W13.00 Miles1320 Yards002.5M0Codington
1991-05-11344°12'N / 103°13'W2.00 Miles500 Yards0202.5M0Meade
1992-06-16344°05'N / 97°32'W44°11'N / 97°26'W3.00 Miles73 Yards002.5M0Miner
1992-06-16344°21'N / 97°10'W44°21'N / 97°07'W2.00 Miles100 Yards002.5M0Kingsbury
1992-06-16344°21'N / 97°07'W44°19'N / 97°04'W2.00 Miles100 Yards002.5M0Brookings
1992-06-16344°03'N / 99°26'W2.00 Miles73 Yards0825.0M0Buffalo
1993-05-07343°36'N / 97°18'W43°42'N / 97°11'W10.00 Miles100 Yards005.0M0Mccook
 Brief Description: A tornado caused extensive damage in the Canistota area. Four metal grain storage bins were severely damaged and the roof was blown off the grain elevator. A large roof was blown off a building in Canistota resulting in rain seeping through the floors of the building. The roof blew into another building causing damage, and the flying debris took out power lines and transformers. The storm nearly totaled a farm including the house, and destroyed barns on other farms. Buildings were damaged in Montrose and a farm and metal buildings were lost on a farm east of Montrose.
1996-05-31345°28'N / 98°29'W45°42'N / 97°58'W27.00 Miles400 Yards01750K0Brown
 Brief Description: An F1 tornado organized over the parking lot of the Target Shopping Center in Aberdeen and tracked northeast towards Bath. It destroyed a green house (a large tent) and it's contents in the Target parking lot, uprooted and snapped trees as it crossed U.S. Highway 12. In addition, it took out the south wall, including a large overhead door, of a cinder block warehouse, broke windows in buildings, and lifted a box car off the train tracks. It also tipped over several semi trailers (the tractors were not attached) rolled over and destroyed a motor home, and threw a pickup truck and it's occupant about 70 feet. The occupant was sligtly injured. Between Aberdeen and Bath, the tornado contained multiple vortices as it strengthened to an F3. Most trees in a shelter belt northeast of Aberdeen were snapped or uprooted and a garage was completely destroyed. Several farms were hit 1 to 2 miles north of Bath. Many outbuildings were destroyed. Two layers of shingles were peeled off a garage and several trees were uprooted. Twelve to 15 high tension utility poles were damaged or destroyed and 17 wooden poles were destroyed along the path of the tornado. The outages caused by the tornado affected several hundred customers. The tornado continued to the northeast producing F1 damage between Bath, Putney, and Claremont. It snapped and uprooted many trees. Outbuildings like grain bins and calf barns were destroyed. Debris was deposited 1 mile away in some instances. A John Deere chopper was turned 180 degrees by the twister. The tornado continued on into Marshall County where it weakened and dissipated near Amherst. No damage was reported in Marshall county except for some trees downed.
1996-05-31345°41'N / 97°59'W45°44'N / 97°55'W5.00 Miles400 Yards0000Marshall
 Brief Description: An F1 tornado organized over the parking lot of the Target Shopping Center in Aberdeen and tracked northeast towards Bath. It destroyed a green house (a large tent) and it's contents in the Target parking lot, uprooted and snapped trees as it crossed U.S. Highway 12. In addition, it took out the south wall, including a large overhead door, of a cinder block warehouse, broke windows in buildings, and lifted a box car off the train tracks. It also tipped over several semi trailers (the tractors were not attached) rolled over and destroyed a motor home, and threw a pickup truck and it's occupant about 70 feet. The occupant was sligtly injured. Between Aberdeen and Bath, the tornado contained multiple vortices as it strengthened to an F3. Most trees in a shelter belt northeast of Aberdeen were snapped or uprooted and a garage was completely destroyed. Several farms were hit 1 to 2 miles north of Bath. Many outbuildings were destroyed. Two layers of shingles were peeled off a garage and several trees were uprooted. Twelve to 15 high tension utility poles were damaged or destroyed and 17 wooden poles were destroyed along the path of the tornado. The outages caused by the tornado affected several hundred customers. The tornado continued to the northeast producing F1 damage between Bath, Putney, and Claremont. It snapped and uprooted many trees. Outbuildings like grain bins and calf barns were destroyed. Debris was deposited 1 mile away in some instances. A John Deere chopper was turned 180 degrees by the twister. The tornado continued on into Marshall County where it weakened and dissipated near Amherst. No damage was reported in Marshall county except for some trees downed.
1998-05-30343°45'N / 97°41'W43°43'N / 97°33'W7.00 Miles700 Yards001.0M100KHanson
 Brief Description: A large and strengthening tornado destroyed buildings and other property on five farms and also destroyed trees and power lines before crossing the eastern edge of Hanson County.
2002-06-23345°44'N / 98°37'W45°42'N / 98°27'W10.00 Miles900 Yards0000Brown
 Brief Description: A powerful supercell thunderstorm produced six tornados from eastern McPherson county and across northern Brown county during the evening hours of June 23rd. The first weak tornado (F0) touched down briefly 6.4 miles northeast of Leola and resulted in no damage. The second tornado (F1) touched down 8.5 miles northeast of Leola and crossed over into Brown county where it dissipated 9 miles northwest of Barnard. This tornado brought down many trees and a barn and caused damage to the siding and the roof of a farmhouse in McPherson county and caused no damage in Brown county. A third weak satellite tornado (F0) occurred following the dissipation of the second tornado and resulted in no damage. A fourth strong tornado (F3) developed 6 miles west of Barnard and moved east and dissipated 3 miles southeast of Barnard. This tornado brought down some high power lines along with a support tower and tossed a pickup truck 100 yards into a group of trees. The pickup truck was totaled. The tornado caused extensive damage to two farmhouses, several farm buildings, and farm equipment. One farmhouse lost its garage and most of its roof with many trees completely snapped off down low and debarked. The fifth tornado developed 5 miles southeast of Barnard and became a violent tornado (F4). This tornado caused damage to one farmhouse, several outbuildings, trees, and equipment as it moved northeast and strengthened. The tornado then completely demolished two unoccupied homes, several outbuildings, many trees, along with destroying or damaging some farm equipment before dissipating 7.6 miles northeast of Barnard. Also, a sixth weak satellite tornado (F0) occurred with this violent tornado and caused no damage. This was the first F4 tornado recorded in Brown county and one of few recorded in South Dakota. The total estimated property loss exceeded a million dollars.
2003-06-24344°01'N / 98°19'W44°05'N / 98°16'W5.00 Miles500 Yards00500K0Sanborn
 Brief Description: A tornado, crossing into Sanborn County from Jerauld County, destroyed or severely damaged several buildings on two farms. The tornado lifted the roof off a house. Another farmhouse had windows blown out, and shingles and aluminum siding torn off. Destroyed buildings included a barn, garage, outbuildings, and other small structures. Vehicles inside the destroyed garage were damaged. The tornado also caused tree, power line, and crop damage.
2003-06-24344°22'N / 98°02'W44°24'N / 98°00'W3.50 Miles300 Yards001.5M0Beadle
 Brief Description: A tornado destroyed farm buildings and numerous trees, resulting in F3 damage southwest of Cavour. Homes and businesses within the town of Cavour were severely damaged (F2). Winds of 120 mph were measured by an anemometer on top of a grain elevator in Cavour.
2006-08-24345°40'N / 99°41'W45°36'N / 99°29'W14.00 Miles300 Yards0100Mcpherson
 Brief Description: A supercell thunderstorm produced an F3 tornado in southwest Mcpherson county. The tornado was on the ground for nearly a half hour and covered about 14 miles. The tornado touched down near the Campbell county line. There were four different sites damaged with the greatest damage 8 miles south of Eureka and 2 miles southeast of Hillsview. Damage included numerous power poles snapped off, trees shredded of leaves, bark and/or uprooted. Numerous livestock and deer were killed. Devastating damage was observed to farm equipment, homes, barns, grain bins, and vehicles. A well anchored mobile home was completely destroyed. Debris from each site was observed up to 3 miles away. One person received minor scrapes and bruises.
2006-08-24344°25'N / 98°41'W44°19'N / 98°16'W19.50 Miles500 Yards0215.0M0Beadle
 Brief Description: A tornado, entering Beadle County from Hand County to the west, destroyed 8 houses, damaged at least 7 other houses, and destroyed or damaged numerous farm buildings. One of the destroyed houses and several destroyed small buildings were on a farmstead 2 miles south of Wessington, and five large high voltage transmission towers were blown down about 3 miles southeast of Wessington. A woman was cut on the neck at one farm southwest of Wolsey where the house and all other buildings were destroyed; the injury was not life threatening. The tornado tossed a car and 2 pickups up to 50 feet at the same farm. Another non life threatening injury occurred southeast of Wolsey, again on a farm where the house and all buildings were destroyed. Several vehicles were destroyed or damaged. The tornado killed 10 head of cattle at one farmstead just south of Wolsey. The tornado snapped off numerous power poles, caused widespread tree damage, and severely damaged a bridge where it crossed U.S. Highway 14. The tornado also caused crop damage, but the amount of crop damage was not known. The tornado dissipated one and a half miles southwest of Huron.
2007-05-05343°40'N / 98°25'W43°44'N / 98°27'W4.00 Miles200 Yards00300K0KAurora
 Brief Description: EVENT NARRATIVE: A tornado destroyed a hunting lodge and nearby outbuildings. The tornado also severely damaged a house, tossed a trailer 100 yards, and caused tree damage. EPISODE NARRATIVE: Numerous thunderstorms during the afternoon and evening of May 5th produced large hail, damaging winds, several tornadoes, and flash flooding in southeast South Dakota. Significant damage was reported from several locations.
1951-07-08245°22'N / 96°50'W010K0Roberts
1951-07-20244°54'N / 96°05'W1.00 Mile33 Yards040K0Codington
1953-05-29245°49'N / 100°49'W0.50 Mile33 Yards02250K0Corson
1953-05-29244°39'N / 97°37'W44°41'N / 97°34'W1.90 Miles33 Yards0025K0Clark
1953-06-02245°00'N / 101°14'W45°01'N / 101°06'W5.90 Miles33 Yards0025K0Dewey
1953-06-14243°28'N / 101°30'W43°50'N / 101°16'W27.70 Miles440 Yards0025K0Davison
1953-06-15245°30'N / 97°59'W45°35'N / 97°52'W7.60 Miles33 Yards003K0Day
1954-05-27243°30'N / 98°06'W1.00 Mile137 Yards0125K0Davison
1954-05-27243°37'N / 97°47'W43°38'N / 97°43'W2.30 Miles100 Yards0125K0Hanson
1954-05-27243°47'N / 97°33'W43°51'N / 97°23'W9.00 Miles90 Yards0025K0Mccook
1954-06-10243°43'N / 99°11'W1.00 Mile30 Yards0025K0Brule
1954-06-18243°25'N / 97°16'W43°28'N / 97°18'W2.70 Miles33 Yards003K0Turner
1954-07-29243°03'N / 98°20'W42°59'N / 98°18'W4.10 Miles33 Yards000K0Charles Mix
1954-08-01243°16'N / 99°28'W43°07'N / 99°16'W14.20 Miles33 Yards020K0Gregory
1955-04-19245°03'N / 101°10'W003K0Dewey
1955-04-19245°56'N / 99°50'W45°59'N / 99°49'W2.30 Miles100 Yards003K0Potter
1955-04-19245°01'N / 99°56'W45°10'N / 99°51'W10.80 Miles67 Yards000K0Potter
1955-04-19245°01'N / 100°07'W45°16'N / 99°59'W18.20 Miles27 Yards003K0Potter
1955-04-19245°30'N / 98°30'W45°34'N / 98°30'W4.60 Miles50 Yards000K0Brown
1955-04-19245°15'N / 99°10'W45°22'N / 99°14'W8.20 Miles100 Yards000K0Edmunds
1955-06-28245°18'N / 98°10'W45°20'N / 98°03'W5.40 Miles50 Yards0025K0Brown
1955-08-28245°07'N / 96°35'W1.50 Miles33 Yards0025K0Grant
1955-09-20244°43'N / 103°25'W1.30 Miles177 Yards003K0Butte
1956-05-10242°59'N / 97°52'W43°04'N / 97°49'W5.60 Miles100 Yards020K0Bon Homme
1956-05-10243°25'N / 97°15'W1.30 Miles100 Yards000K0Turner
1956-06-21245°10'N / 98°28'W000K0Spink
1956-06-29244°00'N / 96°58'W44°00'N / 96°53'W3.00 Miles33 Yards003K0Lake
1956-06-29244°00'N / 96°53'W44°02'N / 96°34'W15.60 Miles33 Yards013K0Moody
1956-08-08243°33'N / 96°46'W000K0Minnehaha
1957-04-18243°15'N / 99°44'W43°19'N / 99°43'W3.80 Miles33 Yards003K0Tripp
1957-06-10243°51'N / 97°05'W000K0Lake
1957-06-20245°01'N / 98°38'W1025K0Spink
1957-06-30243°22'N / 99°45'W0025K0Tripp
1959-05-25244°15'N / 98°46'W003K0Hand
1959-06-23244°27'N / 98°43'W0025K0Hand
1959-07-03245°30'N / 99°52'W0025K0Walworth
1959-07-07245°03'N / 98°05'W0025K0Spink
1959-08-31244°25'N / 101°55'W0025K0Haakon
1960-07-25243°55'N / 100°17'W43°55'N / 100°04'W10.40 Miles33 Yards0025K0Lyman
1960-08-24244°22'N / 101°01'W44°26'N / 100°45'W13.60 Miles200 Yards0125K0Stanley
1961-06-22243°31'N / 103°37'W003K0Custer
1961-06-28245°37'N / 99°38'W45°30'N / 98°37'W49.70 Miles33 Yards00250K0Mcpherson
1961-06-28245°15'N / 99°47'W1.00 Mile33 Yards00250K0Walworth
1961-06-28245°36'N / 97°38'W1.00 Mile33 Yards00250K0Marshall
1961-07-27243°19'N / 100°39'W5.00 Miles33 Yards0025K0Todd
1961-09-07245°45'N / 98°44'W0025K0Mcpherson
1962-04-26243°43'N / 98°00'W0025K0Davison
1962-05-12243°32'N / 96°59'W43°41'N / 96°58'W10.10 Miles880 Yards0025K0Minnehaha
1962-05-15244°00'N / 97°42'W44°04'N / 97°44'W4.10 Miles33 Yards020K0Miner
1962-05-16244°10'N / 97°39'W000K0Miner
1962-05-21244°01'N / 98°17'W43°52'N / 98°20'W10.40 Miles33 Yards000K0Sanborn
1962-07-06245°56'N / 99°04'W45°55'N / 99°01'W3.00 Miles550 Yards0025K0Mcpherson
1962-07-07244°24'N / 97°54'W0.20 Mile33 Yards003K0Beadle
1962-07-07244°42'N / 97°33'W44°40'N / 97°32'W0025K0Clark
1962-08-06245°03'N / 97°13'W00250K0Codington
1963-07-26244°57'N / 97°53'W1.00 Mile1000 Yards0025K0Clark
1964-05-02243°49'N / 101°42'W44°02'N / 101°40'W14.80 Miles33 Yards0025K0Jackson
1964-05-05245°48'N / 96°52'W45°52'N / 96°49'W4.50 Miles100 Yards0025K0Roberts
1964-05-05245°55'N / 100°06'W45°41'N / 100°03'W16.00 Miles880 Yards00250K0Campbell
1964-06-08245°05'N / 100°42'W45°09'N / 100°41'W3.80 Miles33 Yards010K0Dewey
1964-06-08244°58'N / 97°33'W000K0Clark
1964-06-08244°47'N / 97°32'W000K0Clark
1964-06-08245°05'N / 97°40'W0.50 Mile33 Yards000K0Clark
1964-06-18245°12'N / 99°49'W45°15'N / 99°47'W2.70 Miles200 Yards0025K0Potter
1964-06-18245°15'N / 99°47'W45°34'N / 99°43'W21.90 Miles200 Yards0225K0Walworth
1964-06-22243°07'N / 96°53'W43°21'N / 96°53'W16.10 Miles33 Yards000K0Lincoln
1964-06-22243°29'N / 96°50'W43°38'N / 96°48'W10.00 Miles33 Yards0025K0Lincoln
1964-07-23244°51'N / 98°13'W44°55'N / 98°06'W6.80 Miles33 Yards0025K0Spink
1964-07-26244°03'N / 101°36'W0025K0Haakon
1964-08-01245°31'N / 102°28'W0.80 Mile100 Yards0025K0Perkins
1965-05-08243°11'N / 99°50'W43°13'N / 99°48'W000K0Tripp
1965-05-08243°57'N / 97°30'W43°59'N / 97°34'W3.30 Miles243 Yards0025K0Miner
1965-05-08243°46'N / 96°49'W43°49'N / 96°54'W4.50 Miles10 Yards0025K0Clay
1965-05-08243°40'N / 99°14'W43°43'N / 99°18'W4.30 Miles100 Yards0025K0Brule
1965-05-20244°27'N / 97°54'W44°35'N / 97°47'W10.40 Miles150 Yards003K0Beadle
1965-05-24242°54'N / 97°24'W0025K0Yankton
1965-05-24244°00'N / 97°11'W000K0Lake
1965-05-24244°00'N / 97°10'W44°07'N / 97°13'W7.90 Miles33 Yards000K0Lake
1965-06-07243°08'N / 97°20'W43°10'N / 97°15'W3.60 Miles100 Yards0025K0Turner
1965-06-07243°25'N / 97°20'W000K0Turner
1965-06-07242°54'N / 97°03'W000K0Clay
1965-06-07243°04'N / 97°02'W43°07'N / 96°52'W8.60 Miles210 Yards000K0Clay
1965-06-11243°49'N / 103°32'W003K0Custer
1965-06-13245°53'N / 100°09'W45°56'N / 100°13'W4.10 Miles30 Yards0025K0Campbell
1965-06-28243°13'N / 97°48'W43°15'N / 97°45'W2.30 Miles73 Yards000K0Hutchinson
1966-05-22243°24'N / 97°00'W003K0Turner
1966-06-04243°14'N / 99°26'W1.00 Mile800 Yards00250K0Gregory
1966-06-22243°41'N / 103°14'W43°42'N / 103°12'W0025K0Custer
1966-07-23243°58'N / 103°28'W43°56'N / 103°23'W3.80 Miles440 Yards0525K0Pennington
1966-07-26245°00'N / 99°06'W003K0Faulk
1966-07-31245°26'N / 98°31'W45°27'N / 98°27'W2.30 Miles253 Yards13250K0Brown
1967-06-18244°04'N / 103°12'W1.00 Mile150 Yards032.5M0Pennington
1967-08-16242°47'N / 96°56'W0025K0Clay
1968-06-09245°50'N / 97°38'W45°53'N / 97°34'W3.80 Miles283 Yards01250K0Marshall
1968-06-20245°47'N / 102°11'W000K0Perkins
1968-06-20244°11'N / 103°56'W44°04'N / 103°43'W13.10 Miles100 Yards000K0Lawrence
1968-06-20243°23'N / 99°26'W43°44'N / 98°58'W33.50 Miles33 Yards000K0Gregory
1968-06-20244°22'N / 100°24'W000K0Stanley
1968-06-20243°29'N / 98°51'W43°36'N / 98°27'W21.40 Miles33 Yards000K0Charles Mix
1968-06-21244°24'N / 96°28'W44°22'N / 96°08'W16.40 Miles30 Yards010K0Lincoln
1969-06-25243°24'N / 98°14'W43°26'N / 98°22'W6.60 Miles200 Yards0225K0Douglas
1969-07-07245°48'N / 101°00'W000K0Lawrence
1969-07-14243°22'N / 103°23'W0.10 Mile33 Yards0025K0Fall River
1969-07-17245°54'N / 102°12'W0025K0Perkins
1969-07-23244°18'N / 103°41'W0.20 Mile33 Yards000K0Lawrence
1969-08-08243°42'N / 98°00'W43°38'N / 97°19'W34.30 Miles33 Yards0125K0Davison
1969-08-12245°30'N / 102°12'W45°29'N / 102°04'W6.10 Miles33 Yards0125K0Perkins
1970-06-14245°40'N / 100°02'W2.50 Miles1760 Yards0025K0Campbell
1970-07-01243°09'N / 96°36'W43°08'N / 96°32'W2.30 Miles1320 Yards0025K0Lincoln
1970-07-14243°10'N / 96°48'W43°07'N / 96°44'W3.80 Miles33 Yards1125.0M0Lincoln
1970-07-18245°06'N / 100°18'W000K0Potter
1971-06-04243°55'N / 100°19'W000K0Lyman
1971-06-04243°54'N / 100°30'W0025K0Jones
1971-06-04243°30'N / 100°29'W0.30 Mile50 Yards000K0Mellette
1971-06-04243°23'N / 98°51'W43°26'N / 98°47'W4.30 Miles137 Yards0025K0Charles Mix
1971-06-15243°18'N / 100°39'W010K0Todd
1971-06-19244°34'N / 96°52'W003K0Deuel
1971-06-19244°38'N / 97°06'W44°22'N / 96°27'W36.80 Miles33 Yards000K0Hamlin
1971-06-19244°27'N / 96°39'W000K0Brookings
1971-07-03244°14'N / 98°59'W44°02'N / 98°41'W20.10 Miles30 Yards000K0Hand
1971-07-03244°13'N / 99°00'W44°14'N / 98°56'W2.30 Miles100 Yards0025K0Hand
1971-10-01244°43'N / 100°10'W0.50 Mile300 Yards0025K0Sully
1971-10-01243°33'N / 97°23'W0025K0Mccook
1971-10-18243°13'N / 99°32'W43°15'N / 99°32'W2.30 Miles367 Yards0025K0Turner
1972-05-21244°48'N / 102°39'W003K0Meade
1972-05-25245°31'N / 102°35'W2.00 Miles50 Yards0025K0Perkins
1972-05-26244°45'N / 102°55'W1.50 Miles440 Yards0025K0Meade
1972-06-28244°33'N / 103°43'W0.10 Mile33 Yards013K0Lincoln
1972-07-19244°22'N / 97°52'W0.30 Mile150 Yards0025K0Beadle
1972-08-05243°01'N / 97°27'W0.30 Mile400 Yards003K0Yankton
1972-09-20242°59'N / 97°29'W00250K0Yankton
1973-04-19244°00'N / 97°54'W44°12'N / 98°12'W20.10 Miles200 Yards0225K0Sanborn
1973-04-19244°55'N / 98°54'W44°57'N / 99°00'W4.90 Miles27 Yards003K0Faulk
1973-06-24243°01'N / 98°18'W1125K0Charles Mix
1973-07-01243°50'N / 98°59'W0.30 Mile50 Yards0125K0Brule
1973-07-01243°50'N / 97°33'W0.50 Mile67 Yards0125K0Mccook
1973-07-08243°15'N / 100°50'W1.00 Mile133 Yards003K0Hutchinson
1974-05-19244°16'N / 101°19'W44°18'N / 101°15'W2.70 Miles33 Yards003K0Haakon
1974-05-19244°21'N / 101°01'W44°25'N / 100°56'W5.60 Miles33 Yards000K0Stanley
1974-07-02243°08'N / 100°55'W43°05'N / 100°33'W18.50 Miles100 Yards00250K0Todd
1977-07-10243°00'N / 101°18'W43°01'N / 101°17'W000K0Bennett
1978-06-15245°28'N / 98°18'W015250K0Brown
1978-06-24243°54'N / 98°07'W000K0Sanborn
1979-06-19244°54'N / 97°06'W002.5M0Codington
1979-08-03245°24'N / 96°52'W45°18'N / 96°28'W20.50 Miles33 Yards00250K0Roberts
1979-09-07243°09'N / 100°55'W1.00 Mile133 Yards00250K0Todd
1981-07-22244°47'N / 97°06'W00250K0Hamlin
1981-09-26242°47'N / 96°53'W0025K0Clay
1982-03-29243°10'N / 101°57'W0.20 Mile10 Yards01250K0Bennett
1982-06-05243°09'N / 103°57'W43°12'N / 103°48'W7.00 Miles33 Yards01250K0Fall River
1983-06-19243°10'N / 103°13'W43°00'N / 103°20'W12.00 Miles40 Yards0025K0Fall River
1983-06-22245°55'N / 100°18'W0.20 Mile13 Yards0025K0Campbell
1983-08-17243°12'N / 103°04'W0.20 Mile10 Yards0025K0Fall River
1983-09-02244°54'N / 99°15'W0.20 Mile10 Yards003K0Hand
1983-09-02244°48'N / 99°09'W0.20 Mile10 Yards0025K0Hand
1984-06-05243°20'N / 97°46'W0025K0Hutchinson
1984-06-07244°01'N / 97°32'W0.10 Mile60 Yards00250K0Miner
1984-06-11242°47'N / 96°59'W0025K0Clay
1985-04-20242°56'N / 97°40'W42°59'N / 97°38'W3.50 Miles1000 Yards00250K0Bon Homme
1985-04-20242°54'N / 97°36'W43°01'N / 97°26'W10.00 Miles440 Yards0025K0Yankton
1985-04-20243°11'N / 97°14'W43°18'N / 97°05'W12.00 Miles440 Yards002.5M0Turner
1986-04-26243°14'N / 96°56'W43°16'N / 96°55'W6.00 Miles50 Yards002.5M0Turner
1986-04-26243°16'N / 96°55'W43°15'N / 96°51'W6.00 Miles50 Yards002.5M0Lincoln
1986-04-26243°18'N / 96°40'W43°24'N / 96°44'W5.00 Miles40 Yards00250K0Lincoln
1986-07-18244°34'N / 97°27'W44°35'N / 97°06'W14.00 Miles100 Yards0025K0Hamlin
1986-07-18244°34'N / 96°42'W44°35'N / 96°29'W17.00 Miles150 Yards0025K0Deuel
1986-07-18245°31'N / 102°14'W45°24'N / 102°06'W10.50 Miles140 Yards003K0Perkins
1986-07-28243°47'N / 99°00'W43°43'N / 98°54'W6.00 Miles80 Yards00250K0Brule
1986-07-28243°39'N / 98°43'W43°39'N / 98°36'W3.50 Miles80 Yards0025K0Aurora
1986-07-28243°26'N / 98°23'W1.90 Miles80 Yards00250K0Douglas
1987-07-07243°04'N / 96°37'W43°01'N / 96°29'W6.00 Miles50 Yards000K0Union
1987-07-11243°50'N / 96°44'W43°50'N / 96°42'W5.00 Miles100 Yards0025K0Minnehaha
1987-08-05244°01'N / 99°52'W1.20 Miles80 Yards00250K0Lyman
1991-05-11244°11'N / 103°13'W1.00 Mile300 Yards05250K0Meade
1992-06-15244°02'N / 101°40'W2.00 Miles50 Yards00250K0Haakon
1992-06-16243°43'N / 98°09'W43°50'N / 98°11'W3.00 Miles73 Yards003K0Davison
1992-06-16243°43'N / 98°09'W43°50'N / 98°11'W3.00 Miles73 Yards003K0Davison
1992-06-16243°59'N / 97°50'W0.50 Mile50 Yards0125K0Miner
1992-06-16243°47'N / 96°56'W43°51'N / 96°51'W5.00 Miles50 Yards002.5M0Minnehaha
1992-06-30244°22'N / 99°55'W0.30 Mile30 Yards0025K0Hughes
1992-08-09243°52'N / 96°56'W3.00 Miles250 Yards002.5M0Lake
1993-05-07243°35'N / 97°33'W2.00 Miles75 Yards00500K0Hutchinson
 Brief Description: A tornado carried a 60 X 120 foot metal pole barn into the tops of four grain bins causing extensive damage. The tornado also destroyed many small buildings and blew roofs off larger buildings on many farms in the area.
1993-05-07243°35'N / 97°33'W1.00 Mile75 Yards00500K0Mccook
 Brief Description: A tornado touched down on several farms destroying two pole barns, a grain bin, and a barn roof.
1996-07-17245°29'N / 97°51'W45°30'N / 97°45'W5.00 Miles150 Yards00200K0Day
 Brief Description: A tornado touched down one mile southwest of Pierpont and traveled east northeast. Two miles east of Pierpont the tornado took out the west wall and the roof of a farmhouse, destroyed a machine shop, a garage, and six grain bins. A truck had its windshield crushed and its side was dented by debris. The tornado also brought down some power lines and several trees in its path.
1998-05-30243°46'N / 97°49'W43°44'N / 97°43'W6.00 Miles200 Yards0050K0Hanson
 Brief Description: A tornado damaged trees and power lines.
1998-05-30243°42'N / 97°26'W43°36'N / 97°24'W6.00 Miles700 Yards00900K100KMccook
 Brief Description: A tornado spawned by the same storm which produced the Spencer tornado damaged farms, crops, trees, and power lines in southern McCook County.
1999-06-04243°03'N / 102°51'W43°13'N / 102°42'W15.00 Miles875 Yards1543.2M0Shannon
 Brief Description: This was the first of two tornadoes that swept through the town of Oglala. Spotters and law enforcement reported that the tornado went up and down several times. It remained on the ground just prior to hitting Oglala and then dissipated as it moved to the northeast. There was one fatality with 54 people receiving medical care for injuries. A church and three of its surrounding buildings were destroyed, 22 mobile homes destroyed, 30 to 50 buildings damaged and a lot of hail damage to roofs and vehicles. M54MH
1999-06-04243°10'N / 102°47'W43°12'N / 102°43'W4.00 Miles400 Yards0000Shannon
 Brief Description: This is the second tornado that formed just southwest of Oglala and then moved through the town. It was smaller then the first tornado and produced its damage about a half mile east of the first tornado.
2000-07-11243°58'N / 97°10'W43°57'N / 97°07'W2.00 Miles100 Yards0050K0Lake
 Brief Description: A tornado destroyed storage sheds, lighting, fencing, and caused other damage at Lake County Speedway. The tornado also damaged crops over a small area.
2001-07-18245°15'N / 99°40'W45°14'N / 99°40'W1.00 Mile100 Yards0000Edmunds
 Brief Description: A tornado touched down and heavily damaged a house. The attached garage was totally destroyed with two vehicles badly damaged. The metal roof was ripped off of the barn with three outbuildings destroyed. Five telephone/power poles were broken off with 1/2 to 3/4 of a mile of power lines down. Also, a small windmill was wrapped around a power pole.
2002-08-09243°07'N / 99°12'W43°07'N / 99°10'W2.00 Miles200 Yards001.0M0Gregory
 Brief Description: A tornado destroyed a church, a county highway shop, several garages, several small sheds, a mobile home, a camper, and a ten thousand bushel silo. The church was ripped from its foundation, with debris and contents blown over a wide area. Tree damage includes uprooted trees, and power lines were blown down. A resulting power outage lasted for several hours. Windows in many homes and some businesses were broken. The Herrick Honey House was severely damaged, and a honey truck was tipped over. Holes were punched in the walls of some houses by flying debris.
2003-06-24243°42'N / 98°14'W43°47'N / 98°15'W6.00 Miles400 Yards00500K0Davison
 Brief Description: A tornado damaged crops, trees, and numerous buildings on several farms. On one farm the northeast corner of a home was heavily damaged, and several buildings including a barn, a grainery, and a machine shed were destroyed. Large trees were blown down.
2003-06-24244°25'N / 97°39'W44°26'N / 97°37'W2.20 Miles200 Yards00200K0Kingsbury
 Brief Description: A tornado caused heavy damage to farm buildings including homes.
2003-06-24243°08'N / 96°58'W43°11'N / 97°03'W7.00 Miles400 Yards0000Turner
 Brief Description: A tornado damaged farm buildings and equipment, as well as crops, trees, and power lines.
2003-06-24243°14'N / 96°56'W43°19'N / 96°59'W7.00 Miles300 Yards00500K0Turner
 Brief Description: A tornado, after crossing into Turner County from Lincoln County, heavily damaged farm buildings, including one farm home demolished, and roof and window damage to at least two other farm homes. The tornado also caused an unknown amount of crop damage.
2003-06-24243°23'N / 97°08'W43°24'N / 97°08'W1.50 Miles200 Yards003.0M0Turner
 Brief Description: A tornado heavily damaged or destroyed numerous structures at the county fairgrounds, uprooted numerous trees, and blew down power lines, resulting in power outages which lasted up to a day. The tornado damaged other structures in Parker including homes and the county courthouse. One home was shifted off its foundation and received broken windows and damaged siding. Some of the damage resulted from falling trees or wind blown debris.
2003-06-24244°26'N / 97°54'W44°29'N / 97°54'W2.00 Miles150 Yards0000Beadle
 Brief Description: A tornado destroyed or heavily damaged farm structures.
2003-07-03243°13'N / 101°35'W43°12'N / 101°30'W3.00 Miles100 Yards0075K0Bennett
 Brief Description: A supercell thunderstorm moved southeastward across western Jackson County and Bennett County. The storm dropped up to golf ball sized hail and produced a tornado north of Tuthill. The tornado touched down about a mile north of the junction of highways 18 and 73, where it destroyed a garage. The tornado moved south-southeast and destroyed a mobile home just to the southeast of the highway intersection and then dissipated just north of Tuthill. No one was injured.
2004-09-23245°42'N / 96°44'W45°45'N / 96°48'W2.20 Miles50 Yards0000Roberts
 Brief Description: The storm entered South Dakota from Traverse county, Minnesota where it produced a tornado. The storm produced a second tornado as it crossed Lake Traverse into South Dakota. This tornado was stronger and destroyed a house, a mobile home, and a travel trailer. Another house and travel trailer were damaged and a shed was also ripped apart. The tornado also killed three cattle.
2006-08-24244°31'N / 99°04'W44°30'N / 98°56'W5.00 Miles300 Yards0000Hand
 Brief Description: A supercell thunderstorm on its southeast track produced a fourth tornado in Hand county. This tornado touched down west of Miller. The tornado destroyed a large barn and a car was moved nearly 20 feet. Well built structures were heavily damaged and several were pushed slightly off of their foundations. Significant tree damage also occurred.
2006-08-24244°26'N / 98°47'W44°25'N / 98°41'W5.00 Miles300 Yards0000Hand
 Brief Description: A supercell thunderstorm tracking southeast produced a fifth tornado in Hand county. The tornado touched downed south of Vayland and tracked southeast and into Beadle county. See storm data for southeast South Dakota. The tornado formed in a heavily wooded area tracking along a county road producing F1 damage to several farmsteads. A mobile home was flipped and destroyed. A grain storage building was flipped onto a car. Several homes had significant roof and window damage. Numerous trees were snapped. As the tornado crossed into Beadle county it was producing F2 damage.
2006-08-24244°19'N / 98°10'W44°15'N / 98°04'W7.00 Miles300 Yards002.0M0Beadle
 Brief Description: A tornado severely damaged 3 houses and destroyed or damaged a barn and several smaller buildings on farmsteads. The tornado knocked down power poles, with a transformer on one of the poles starting a brief fire. A tree shelter belt and crops were damaged. The amount of crop damage was not known.
2006-09-16243°33'N / 97°30'W43°42'N / 97°17'W12.00 Miles100 Yards00100K0Mccook
 Brief Description: A tornado affected 3 farmsteads, destroying numerous outbuildings, damaging farm equipment and a home, killing at least 5 cattle and injuring others. The tornado also damaged a hog confinement building and overturned a semi trailer on Interstate 90.
2007-05-05242°57'N / 97°49'W43°01'N / 97°49'W4.00 Miles100 Yards0050K0KBon Homme
 Brief Description: EVENT NARRATIVE: A tornado blew over a shed, damaged several outbuildings, and flipped over a hog shed. A house was damaged when hit by debris from the hog shed. The tornado also shifted a two car garage off its foundation, damaged the adjoining house, blew a chimney off the roof, twisted a windmill, and caused tree damage. EPISODE NARRATIVE: Numerous thunderstorms during the afternoon and evening of May 5th produced large hail, damaging winds, several tornadoes, and flash flooding in southeast South Dakota. Significant damage was reported from several locations.
2007-05-05244°04'N / 97°36'W44°04'N / 97°37'W1.00 Mile100 Yards0020K0KMiner
 Brief Description: EVENT NARRATIVE: A tornado damaged outbuildings and destroyed a hunting lodge. EPISODE NARRATIVE: Numerous thunderstorms during the afternoon and evening of May 5th produced large hail, damaging winds, several tornadoes, and flash flooding in southeast South Dakota. Significant damage was reported from several locations.
2007-05-05243°04'N / 97°54'W43°07'N / 97°55'W4.00 Miles100 Yards00100K0KBon Homme
 Brief Description: EVENT NARRATIVE: A tornado damaged two farms, including a house shifted off its foundation, and several outbuildings destroyed. The tornado also caused widespread tree damage, including some trees debarked and uprooted. The tornado also blew off the tops of grain bins and blew down power lines. EPISODE NARRATIVE: Numerous thunderstorms during the afternoon and evening of May 5th produced large hail, damaging winds, several tornadoes, and flash flooding in southeast South Dakota. Significant damage was reported from several locations.
2007-05-05243°06'N / 97°36'W43°06'N / 97°36'W1.00 Mile100 Yards00100K0KYankton
 Brief Description: EVENT NARRATIVE: A tornado destroyed 3 concrete silos, destroyed numerous outbuildings, heavily damaged a large shed, damaged a barn, caused tree damage, and caused other damage on a farm. EPISODE NARRATIVE: Numerous thunderstorms during the afternoon and evening of May 5th produced large hail, damaging winds, several tornadoes, and flash flooding in southeast South Dakota. Significant damage was reported from several locations.
2007-05-05243°43'N / 97°36'W43°46'N / 97°37'W4.00 Miles400 Yards0050K0KMccook
 Brief Description: EVENT NARRATIVE: A tornado damaged a house on the west side of Spencer and caused tree damage before crossing into western Hanson County. EPISODE NARRATIVE: Numerous thunderstorms during the afternoon and evening of May 5th produced large hail, damaging winds, several tornadoes, and flash flooding in southeast South Dakota. Significant damage was reported from several locations.
2007-05-05243°45'N / 97°38'W43°51'N / 97°39'W7.00 Miles400 Yards0010K0KHanson
 Brief Description: EVENT NARRATIVE: A tornado caused damage to trees and a junk yard after crossing over from McCook County. EPISODE NARRATIVE: Numerous thunderstorms during the afternoon and evening of May 5th produced large hail, damaging winds, several tornadoes, and flash flooding in southeast South Dakota. Significant damage was reported from several locations.
2008-06-05243°43'N / 96°46'W43°45'N / 96°44'W3.00 Miles100 Yards000K0KMinnehaha
 Brief Description: EVENT NARRATIVE: A tornado caused damage to silos, farm buildings, power lines, and numerous trees. EPISODE NARRATIVE: Thunderstorms produced numerous events of tornadoes, large hail and damaging winds over southeast South Dakota from late morning through the evening of June 5th. The thunderstorms also produced heavy rain which resulted in flash flooding at several locations.
2010-05-22243°22'N / 99°52'W43°22'N / 99°48'W3.00 Miles150 Yards0080K0KTripp
 Brief Description: EVENT NARRATIVE: A tornado tracked along East 3rd Street in Winner, blowing down carports, trees, and tractor-trailers. A large barn was destroyed east of Winner; the curved roof was blown off in one piece and tossed across a corral. Another machine shed was blown apart. Based on the extent of the damage, wind speeds were estimated around 75 mph through town with peak winds 95 to 115 mph. EPISODE NARRATIVE: Large hail and strong wind gusts accompanied a severe thunderstorm over southern Todd and Tripp Counties. A tornado crossed the town of Winner, causing minor damage in town and destroying two barns east of town.
2010-05-22245°27'N / 99°45'W45°27'N / 99°42'W2.00 Miles600 Yards000K0KWalworth
 Brief Description: EVENT NARRATIVE: The third tornado formed about four miles west of Bowdle on Highway 12. The tornado came down on a farm or formed immediately to the south of the farm. Several outbuildings were severely damaged with the residence sustaining siding and roof damage. A stock trailer was thrown about 75 yards from its initial point. Tree damage was sustained on the west side of the property with fallen trees leaning west. On the east side of the property, debris was scattered to the northeast. The damage on the farm was consistent with an EF2 rating with wind speeds ranging from 111 to 135 mph. The tornado continued moving northeast crossing into western Edmunds county where it intensified to an EF4. EPISODE NARRATIVE: Several supercell thunderstorms developed along a very strong warm front and produced nine tornadoes from Akaska to Bowdle to Hecla. The largest of the tornadoes was an EF4 tornado which occurred near Bowdle. This tornado produced devastating damage in the Bowdle area. The other tornadoes ranged from EF0 to EF2 and caused extensive tree and building damage. Nearly one-hundred power poles were downed along with several high line towers leaving nearly a thousand customers without power. Also, very strong straight line winds and large hail up to the size of golfballs affected parts of the area causing some damage.
2010-05-22245°51'N / 98°18'W45°52'N / 98°17'W1.00 Mile100 Yards000K0KBrown
 Brief Description: EVENT NARRATIVE: An eighth tornado touched down west of Hecla producing damage to one farm including tearing the roof off of an outbuilding and throwing several grain bins 100 yards or more. Widespread tree damage was also noted. The tornado continued northeast damaging another outbuilding and destroying an empty grain bin before lifting. Wind speeds were estimated between 112 and 120 mph. EPISODE NARRATIVE: Several supercell thunderstorms developed along a very strong warm front and produced nine tornadoes from Akaska to Bowdle to Hecla. The largest of the tornadoes was an EF4 tornado which occurred near Bowdle. This tornado produced devastating damage in the Bowdle area. The other tornadoes ranged from EF0 to EF2 and caused extensive tree and building damage. Nearly one-hundred power poles were downed along with several high line towers leaving nearly a thousand customers without power. Also, very strong straight line winds and large hail up to the size of golfballs affected parts of the area causing some damage.
2010-05-22245°32'N / 99°00'W45°36'N / 98°54'W7.00 Miles200 Yards000K0KEdmunds
 Brief Description: EVENT NARRATIVE: The seventh tornado formed in northeast Edmunds county and tracked northeast. The tornado took off sections from the roof of a barn. The tornado then tracked through primarily crop and pasture land to near Deerfield Colony and into southeast Mcpherson county. Sporadic tree damage was observed along the tornado path with many wooden power poles completely sheared off. Wind speeds with this tornado were estimated between 111 and 120 mph. EPISODE NARRATIVE: Several supercell thunderstorms developed along a very strong warm front and produced nine tornadoes from Akaska to Bowdle to Hecla. The largest of the tornadoes was an EF4 tornado which occurred near Bowdle. This tornado produced devastating damage in the Bowdle area. The other tornadoes ranged from EF0 to EF2 and caused extensive tree and building damage. Nearly one-hundred power poles were downed along with several high line towers leaving nearly a thousand customers without power. Also, very strong straight line winds and large hail up to the size of golfballs affected parts of the area causing some damage.
2010-05-22245°36'N / 98°54'W45°41'N / 98°43'W10.00 Miles200 Yards000K0KMcpherson
 Brief Description: EVENT NARRATIVE: A tornado entered southeast Mcpherson county from northeast Edmunds county. The tornado struck a farm along State Highway 45 where a calving shed was completely destroyed with large sections of the roof blown over 100 yards. The tornado then caused moderate damage to a barn with one collapsed wall. Multiple softwood and hardwood trees were uprooted and many power poles were completely snapped near the base. The tornado tore the roof off a turkey barn at the Long Lake Colony. Several Wetonka homes also sustained minor roof damage. The wind speeds were estimated between 111 and 120 mph. The tornado then moved into western Brown county and dissipated. EPISODE NARRATIVE: Several supercell thunderstorms developed along a very strong warm front and produced nine tornadoes from Akaska to Bowdle to Hecla. The largest of the tornadoes was an EF4 tornado which occurred near Bowdle. This tornado produced devastating damage in the Bowdle area. The other tornadoes ranged from EF0 to EF2 and caused extensive tree and building damage. Nearly one-hundred power poles were downed along with several high line towers leaving nearly a thousand customers without power. Also, very strong straight line winds and large hail up to the size of golfballs affected parts of the area causing some damage.
2010-05-24245°26'N / 102°09'W45°33'N / 102°13'W8.00 Miles440 Yards00100K0KPerkins
 Brief Description: EVENT NARRATIVE: A tornado touched down just southeast of the intersection of S.D. Highways 73 and 20 East. It destroyed the Progress Rural School and continued to track to the north, dissipating northwest of the intersection of S.D. Highways 73 and 20 West. EPISODE NARRATIVE: Severe thunderstorms spawned five tornadoes from southeastern Meade into northeastern Perkins County.
2010-05-24245°10'N / 102°09'W45°30'N / 102°13'W23.00 Miles440 Yards00100K0KPerkins
 Brief Description: EVENT NARRATIVE: A tornado touched down north of Faith. It destroyed outbuildings on two ranches, tossed farm equipment, damaged trees, and killed four calves. EPISODE NARRATIVE: Severe thunderstorms spawned five tornadoes from southeastern Meade into northeastern Perkins County.
2010-05-24244°31'N / 102°07'W44°51'N / 102°10'W22.00 Miles440 Yards00100K0KMeade
 Brief Description: EVENT NARRATIVE: A tornado touched down south of Plainview and traveled more than 22 miles to (). It damaged a manufactured home shortly after it formed, tearing off its roof and blowing over its walls. It also destroyed an old, abandoned house and pole barn and tossed a combine, hay swather, and van. EPISODE NARRATIVE: Severe thunderstorms spawned five tornadoes from southeastern Meade into northeastern Perkins County.
2010-06-16245°03'N / 101°19'W45°03'N / 101°19'W000K0KDewey
 Brief Description: EVENT NARRATIVE: A tornado touched down briefly on a farm six miles northwest of Eagle Butte. Two homes suffered severe structural damage with several pole barns destroyed. Also several pieces of agricultural equipment were damaged or destroyed. A horse was severely injured and had to be put down. Wind speeds were estimated between 120 and 125 mph. EPISODE NARRATIVE: Several supercell thunderstorms brought very heavy rains of 4 to 7 inches, hail up to golfball size, winds to over 100 mph, along with a tornado to parts of north central South Dakota. Dewey county was the most affected by the storms.
2010-06-16245°02'N / 101°36'W45°03'N / 101°36'W1.00 Mile450 Yards02750K0KZiebach
 Brief Description: EVENT NARRATIVE: Another tornado touched down just south of Dupree and moved along the west side of town. It tore the roof off the community center, damaged a house and garage, crumpled large grain bins, and tossed several mobile homes. One person was injured when a mobile home was blown into the car in which he had taken cover and another person received minor injuries. EPISODE NARRATIVE: A tornadic thunderstorm developed over central Ziebach County and slowly moved northeastward toward Red Elm and Dupree. The storm lingered and regenerated over the Dupree area for more than three hours; producing large hail, wind gusts near 100 mph, sixteen tornadoes, and torrential rainfall that caused widespread flooding. Significant damage occurred in Dupree, where several mobile homes were blown over, roofs were damaged, and trees were downed. Two people were injured in Dupree.


* The information on this page is based on the global volcano database, the U.S. earthquake database of 1638-1985, and the U.S. Tornado and Weather Extremes database of 1950-2010.


 
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