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Gann Valley, SD Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Gann Valley is about the same as South Dakota average and is much lower than the national average. The risk of tornado damage in Gann Valley is lower than South Dakota average and is lower than the national average.

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

Earthquake Index, #103

Gann Valley, SD
0.04
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, #1

Gann Valley, SD
0.0000
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, #260

Gann Valley, SD
83.20
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 1,812 other weather extremes events within 50 miles of Gann Valley, SD were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:0Cold:0Dense Fog:0Drought:0
Dust Storm:0Flood:93Hail:1,065Heat:0Heavy Snow:0
High Surf:0Hurricane:0Ice Storm:0Landslide:0Strong Wind:1
Thunderstorm Winds:626Tropical Storm:0Wildfire:2Winter Storm:0Winter Weather:0
Other:25 

Volcanos Nearby

No volcano is found in or near Gann Valley, SD.

Historical Earthquake Events

A total of 2 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Gann Valley, SD.

Distance (miles)DateMagnitudeDepth (km)LatitudeLongitude
24.21983-03-044.6544.21-99.41
30.81967-11-234.4N/A43.7-99.4

Historical Tornado Events

A total of 30 historical tornado events that had recorded magnitude of 2 or above found in or near Gann Valley, SD.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
10.31971-07-03244°14'N / 98°59'W44°02'N / 98°41'W20.10 Miles30 Yards000K0Hand
13.31971-07-03244°13'N / 99°00'W44°14'N / 98°56'W2.30 Miles100 Yards0025K0Hand
13.81973-07-01243°50'N / 98°59'W0.30 Mile50 Yards0125K0Brule
18.61959-05-25244°15'N / 98°46'W003K0Hand
19.71986-07-28243°47'N / 99°00'W43°43'N / 98°54'W6.00 Miles80 Yards00250K0Brule
20.51971-07-03344°16'N / 99°14'W44°15'N / 99°17'W0025K0Hand
22.11992-06-16344°03'N / 99°26'W2.00 Miles73 Yards0825.0M0Buffalo
23.91954-06-10243°43'N / 99°11'W1.00 Mile30 Yards0025K0Brule
24.61971-07-24343°46'N / 99°19'W2.50 Miles300 Yards000K0Brule
27.41965-05-08243°40'N / 99°14'W43°43'N / 99°18'W4.30 Miles100 Yards0025K0Brule
29.82006-08-24244°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.
30.51971-07-09344°05'N / 99°36'W000K0Lyman
31.21986-07-28243°39'N / 98°43'W43°39'N / 98°36'W3.50 Miles80 Yards0025K0Aurora
31.71959-06-23244°27'N / 98°43'W0025K0Hand
32.82006-08-24244°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.
32.91971-07-09343°53'N / 99°37'W020K0Lyman
34.32006-08-24344°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.
34.41962-05-21244°01'N / 98°17'W43°52'N / 98°20'W10.40 Miles33 Yards000K0Sanborn
34.51968-06-20243°23'N / 99°26'W43°44'N / 98°58'W33.50 Miles33 Yards000K0Gregory
34.62003-06-24344°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.
36.02007-05-05343°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.
37.91968-06-20243°29'N / 98°51'W43°36'N / 98°27'W21.40 Miles33 Yards000K0Charles Mix
42.32003-06-24243°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.
42.91962-05-14344°30'N / 98°14'W43°38'N / 98°01'W60.70 Miles1760 Yards020K0Davison
43.61987-08-05244°01'N / 99°52'W1.20 Miles80 Yards00250K0Lyman
44.01971-06-04243°23'N / 98°51'W43°26'N / 98°47'W4.30 Miles137 Yards0025K0Charles Mix
44.31978-06-24243°54'N / 98°07'W000K0Sanborn
44.61992-06-16243°43'N / 98°09'W43°50'N / 98°11'W3.00 Miles73 Yards003K0Davison
44.61992-06-16243°43'N / 98°09'W43°50'N / 98°11'W3.00 Miles73 Yards003K0Davison
46.52006-08-24244°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.


* 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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