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Conception Junction, MO Natural Disasters and Weather Extremes

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The chance of earthquake damage in Conception Junction is lower than Missouri average and is much lower than the national average. The risk of tornado damage in Conception Junction is about the same as Missouri average and is much higher than the national average.

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

Earthquake Index, #751

Conception Junction, MO

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

Conception Junction, MO

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, #547

Conception Junction, MO

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 2,997 other weather extremes events within 50 miles of Conception Junction, MO were recorded from 1950 to 2010. The following is a break down of these events:

Avalanche:0Blizzard:10Cold:27Dense Fog:8Drought:10
Dust Storm:0Flood:241Hail:1,357Heat:23Heavy Snow:35
High Surf:0Hurricane:0Ice Storm:24Landslide:0Strong Wind:20
Thunderstorm Winds:1,077Tropical Storm:0Wildfire:0Winter Storm:72Winter Weather:37

Volcanos Nearby

No volcano is found in or near Conception Junction, MO.

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Conception Junction, MO.

No historical earthquake events found in or near Conception Junction, MO.

Historical Tornado Events

A total of 90 historical tornado events that had recorded magnitude of 2 or above found in or near Conception Junction, MO.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
6.61969-06-29240°15'N / 94°37'W40°17'N / 94°31'W5.10 Miles100 Yards00250K0Nodaway
11.01958-10-08340°25'N / 94°38'W40°25'N / 94°36'W00250K0Nodaway
11.91964-04-12240°17'N / 94°59'W40°23'N / 94°49'W10.80 Miles80 Yards002.5M0Nodaway
11.91984-04-26240°12'N / 94°33'W40°14'N / 94°24'W7.00 Miles100 Yards00250K0Gentry
15.11994-06-25240°03'N / 94°43'W0.80 Mile100 Yards125.0M0Andrew
 Brief Description: A tornado touched down southeast of Whitesville destroying 12 mobile homes. A 58-year old woman was killed and her husband injured in one of the mobile homes, which had been tied down. Another occupant sustained minor injuries after fleeing the home to seek shelter in a nearby pickup truck. The storm also damaged a workshop and buildings on a nearby farm with total damage estimates around $950,000. (F58M)
15.62004-05-24240°12'N / 94°33'W40°15'N / 94°15'W17.00 Miles250 Yards0110.0M0Gentry
 Brief Description: This F2 tornado was consistently on the ground from one mile south of Stanberry east-northeast through Albany. Muliple vortices were noticed on chaser video. Extensive damage was observed in Albany. Three homes were destroyed. There were 34 buildings with major damage and 70 buildings had minor damage.
18.71958-10-10340°25'N / 94°36'W40°27'N / 94°13'W20.10 Miles300 Yards27250K0Worth
19.21952-11-16340°27'N / 95°04'W40°34'N / 94°41'W21.60 Miles600 Yards0225K0Nodaway
19.81960-04-16340°18'N / 94°26'W40°22'N / 94°13'W11.90 Miles300 Yards0025K0Benton
20.51973-04-19240°05'N / 94°24'W40°09'N / 94°19'W5.90 Miles50 Yards003K0Gentry
20.71955-04-23240°31'N / 94°32'W40°33'N / 94°29'W3.00 Miles100 Yards0125K0Worth
21.12006-03-30239°59'N / 94°55'W40°02'N / 94°53'W5.00 Miles800 Yards08800K0Andrew
 Brief Description: Tornado touched down southeast of Fillmore and traveled northeast 5 miles before dissipating around Highway 71 and A Highway. Three homes were nearly or completely destroyed and 8 had minor to moderate damage. Eight persons were injured.
22.01973-04-19240°09'N / 94°19'W40°10'N / 94°17'W003K0Gentry
23.81954-05-31240°26'N / 95°09'W40°27'N / 95°01'W6.80 Miles440 Yards0025K0Morgan
24.72001-04-11240°24'N / 94°22'W40°36'N / 94°18'W14.00 Miles100 Yards00100K0Worth
 Brief Description: The tornado that initially touched down in Gentry county, crossed into Worth county at 1032 am, 2 miles west of Denver. It crossed into Iowa 8 miles north of Allendale at 1040 am. One home was destroyed along with several out buildings.
27.51979-03-29440°29'N / 95°09'W40°34'N / 95°02'W8.00 Miles500 Yards040K0Nodaway
27.81966-05-23240°27'N / 95°13'W40°28'N / 95°06'W5.70 Miles50 Yards0025K0Atchison
29.31979-03-29440°34'N / 95°02'W40°42'N / 94°55'W10.80 Miles500 Yards0162.5M0Page
29.51958-10-08340°27'N / 94°13'W40°27'N / 94°09'W3.00 Miles300 Yards00250K0Harrison
29.61954-04-05240°40'N / 94°53'W40°43'N / 94°40'W11.50 Miles333 Yards000K0Taylor
30.32004-05-29439°57'N / 94°16'W40°08'N / 94°08'W16.00 Miles800 Yards0000Daviess
 Brief Description: Large F4 tornado crossed into Daviess county from Dekalb county at 2135 and then crossed into Harrison county at 2150. Tornado stayed in rural areas of the Grand River flood plain.
30.31959-05-10240°31'N / 95°10'W0.20 Mile17 Yards0025K0Nodaway
30.51981-04-11240°41'N / 94°45'W40°43'N / 94°53'W6.90 Miles50 Yards022.5M0Taylor
30.81960-06-29239°45'N / 94°51'W39°54'N / 94°25'W25.10 Miles100 Yards0025K0Buchanan
32.61954-05-31240°23'N / 95°25'W40°26'N / 95°09'W14.20 Miles440 Yards0025K0Atchison
32.91979-03-29340°35'N / 94°57'W40°54'N / 94°34'W29.60 Miles500 Yards012.5M0Taylor
33.31957-05-20239°51'N / 94°21'W39°57'N / 94°13'W9.80 Miles200 Yards0025K0De Kalb
33.41971-05-05340°45'N / 94°38'W2.00 Miles400 Yards012250K0Taylor
33.51960-04-16340°22'N / 94°13'W40°25'N / 93°56'W15.10 Miles300 Yards0425K0Harrison
34.12006-04-15239°45'N / 94°29'W39°54'N / 94°20'W13.00 Miles100 Yards0075K0De Kalb
 Brief Description: PSDA indicated a second tornado initially touched down just north of the De Kalb-Clinton County line about 1 mile east of Stewartsville, Missouri along Highway 36, where F1 damage was noted to a destroyed pole barn. The tornado tracked northeast producing F1 damage about a third of a mile north of the intersection of Fairview and Rogers Roads, where a second pole barn was destroyed. The tornado then intensified as it tracked northeast, producing F2 damage to a home near the intersection of Grindstone and Baker Roads. The tornado lifted just north of the intersection of Routes C and 6.
34.11969-07-26239°47'N / 94°49'W0.10 Mile20 Yards00250K0Buchanan
34.41955-04-23240°26'N / 95°18'W40°28'N / 95°18'W2.30 Miles100 Yards0025K0Atchison
34.92004-05-29440°12'N / 94°02'W40°13'N / 94°02'W2.00 Miles800 Yards0000Harrison
 Brief Description: Large F4 tornado crossed into Harrison county from Daviess county 5 miles south of Bethany over rural land and then dissipated.
35.02004-08-26240°40'N / 95°12'W40°39'N / 95°02'W7.00 Miles1200 Yards0000Page
 Brief Description: This tornado first touched down around 2 miles east of Coin and tracked 7 miles before lifting just northwest of Shambaugh. The tornado reached it's maximum intensity of f2 north of College Springs where a farmstead sustained serious damage. The roof of a house at this farmstead was removed and siding was damaged, a hay barn was flattened, grain bins were crushed and the roof of a silo and other nearby outbuildings were destroyed. Other farmsteads received damage to outbuildings and the crop and tree damage path at times widened to 3/4 of a mile.
35.41973-06-16239°46'N / 94°50'W6.00 Miles33 Yards0142.5M0Buchanan
35.81965-04-10239°47'N / 94°25'W39°52'N / 94°16'W9.60 Miles50 Yards07250K0De Kalb
35.81971-05-18239°46'N / 94°27'W39°52'N / 94°16'W11.80 Miles50 Yards0025K0De Kalb
36.01966-10-14240°47'N / 94°35'W1.50 Miles100 Yards0025K0Taylor
36.02004-05-29439°53'N / 94°15'W39°55'N / 94°10'W4.00 Miles800 Yards36300K0De Kalb
 Brief Description: Large F4 tornado touched down 2 miles south of Weatherby and moved east northeast. The tornado killed 3 persons near Weatherby. The 80 and 60 year old fatalities occurred in a destroyed frame house. Two mobile homes were destroyed with one having the 54 year old fatality. The tornado crossed into Daviess county 4 miles east of Weatherby. F80PH, F60PH, M54PH
36.71954-04-05340°36'N / 95°14'W40°40'N / 95°10'W5.20 Miles667 Yards000K0Page
37.21971-05-05240°47'N / 94°54'W0125K0Taylor
37.31981-04-03239°47'N / 95°00'W1.80 Miles33 Yards00250K0Doniphan
37.31971-05-18239°45'N / 94°28'W39°46'N / 94°27'W0025K0De Kalb
38.01955-04-23240°38'N / 95°14'W1.50 Miles30 Yards0025K0Page
38.41964-06-19340°44'N / 95°03'W40°50'N / 94°53'W10.60 Miles200 Yards01250K0Page
38.51967-04-21240°01'N / 94°06'W40°04'N / 93°57'W8.40 Miles90 Yards0025K0Daviess
38.71955-04-23340°43'N / 94°21'W40°48'N / 94°19'W5.40 Miles440 Yards0025K0Ringgold
38.91984-06-07340°44'N / 95°02'W40°50'N / 94°57'W7.00 Miles100 Yards032.5M0Page
39.01954-04-05440°35'N / 95°19'W40°37'N / 95°16'W3.30 Miles700 Yards0225K0Page
39.11966-10-14240°50'N / 94°38'W000K0Taylor
39.31979-08-28340°41'N / 95°22'W40°32'N / 95°13'W12.80 Miles533 Yards003K0Page
39.61971-05-18239°40'N / 94°36'W39°45'N / 94°28'W9.00 Miles50 Yards0025K0Clinton
39.61975-06-18240°40'N / 95°14'W0025K0Page
39.61955-05-26239°41'N / 94°59'W39°46'N / 94°53'W7.80 Miles220 Yards0125K0Doniphan
40.51964-09-22240°39'N / 95°14'W40°48'N / 95°07'W11.80 Miles300 Yards00250K0Page
40.71954-04-05440°33'N / 95°23'W40°35'N / 95°20'W3.00 Miles900 Yards00250K0Atchison
40.82004-05-29239°43'N / 94°21'W39°46'N / 94°20'W5.00 Miles100 Yards0000De Kalb
 Brief Description: Tornado touched down in open country and traveled 5 miles.
40.91958-11-17240°12'N / 93°56'W40°16'N / 93°54'W4.10 Miles100 Yards00250K0Harrison
41.11984-06-07440°25'N / 94°02'W40°34'N / 93°54'W10.00 Miles200 Yards112.5M0Harrison
41.61964-04-12440°40'N / 95°14'W40°50'N / 95°06'W13.10 Miles400 Yards1282.5M0Page
41.81958-07-14340°54'N / 94°35'W40°50'N / 94°34'W3.60 Miles100 Yards00250K0Taylor
41.81984-06-07239°52'N / 94°06'W1.00 Mile100 Yards00250K0Daviess
41.92001-04-11340°34'N / 94°14'W40°53'N / 94°06'W23.50 Miles500 Yards001.5M0Ringgold
 Brief Description: Tornado moved our of Missouri into Ringgold County, across the county into Union County. A very powerful storm system moved through the southern Rockies during the night of the 10th and early morning of the 11th. Intense surface low pressure formed over western Kansas with a central pressure by sunrise on the 11th of 977 Mb. The weather situation was very dynamic with 500 Mb winds over 100 kts and a very sharp dry punch clearly visible on the satellite pictures. During the day the warm front that extended east from the low reached into southern Iowa, then extended eastward. There were two things that occurred during the day. The first was a very strong supercell that formed over northern Missouri during the morning. This storm lifted north-northeast at about 50 kts into Iowa, producing a long track tornado with a path extending nearly all the way to Des Moines. During the afternoon the warm front surged north with the northeast progression of the surface dry line. Dew points rose into the mid 60s to the south of the warm front across much of the southeast half to two thirds of Iowa. Surface temperatures in these areas reached the 60s north, with 70s south. With the atmosphere primed, the dry line began to move into Iowa. Dew point temperatures behind the dry line were in the 30s with southwest winds of 30 to 50 MPH. A broken squall line formed on the nose of the dry punch and became severe quickly. The storm cells themselves were not all that large, but nearly every cell along the line did carry a mesoscale circulation. There were several tornado touchdowns as the line lifted north as well. The primary severe weather during this even was the tornadic nature of it. There were reports of wind and hail, but everything considered these reports were pretty scattered. There were very few reports of wind and hail with the first supercell as it lifted north out of Missouri. One inch diameter hail was reported in Ringgold County east of Redding. Reports of winds and hail were more frequent with the second line of thunderstorms. There were numerous reports of hail up to marble size with this line, however there were not all that many reports of hail larger than that. A few reports of three quarter to one inch diameter hail were received from Marion and Polk Counties. The most significant hail occurred in northeast Iowa in Butler County. Golf ball size hail fell in the town of Parkersburg as the line passed over the city. There were more reports of wind with the second round. Nearly all locations reported winds of at least 50 MPH as the line passed overhead. Scattered reports of winds of 70 to 85 MPH were received. Wind damage occurred in Boone County as high winds downed power lines and downed outbuildings north of Ogden. The greatest wind damage occurred over northeast Iowa in Black Hawk and Franklin Counties. A building was blown off of its foundation and onto an adjacent road southwest of Hampton in Franklin County. A roof of a barn was damaged and a grain wagon was tipped over northwest of Hampton. Roof and house damage was reported over parts of Black Hawk County as well. Five injuries occurred in Warren County at Carlisle when winds of around 65 MPH toppled a school bus. Twenty one children were on board the bus when it overturned with 5 treated for minor injuries. Spotty damage was reported around the greater Des Moines metropolitan area. Several tornadoes occurred with this system. The most significant tornado entered southern Iowa around mid day. This tornado reached minimal F3 intensity just east of Mt. Ayr (Ringgold County). Property damage is estimated at over $500,000 in Ringgold county alone. Across the Des Moines area of responsibility, at least 15 homes were destroyed, and 60 residences were damaged as around a dozen tornadoes touched down. A supercell thunderstorm moved north from Missouri into southern Iowa late in the morning of April 11. The storm produced a tornado in northern Missouri and crossed into Iowa in Ringgold County. The storm, and tornado, moved north through Ringgold County with a continuous damage path half way through the county. The damage path continued north through northern Ringgold County, southeast Union County and into northwest Clarke County. In this area, the path was not continuous. Based on damage reports, the tornado continued to produce occasional damage in Madison County. Chaser reports indicate the tornado had a multi-vortex structure as it moved through Ringgold and Union Counties. The last reported sighting was in northern Polk County where a brief touchdown was reported with no damage. The storm likely produced one tornado from the Missouri border to Madison County with an intermittent damage track. Damage in Ringgold County was severe with initial estimates around $1 million. The county was later declared a federal disaster area by President Bush. A second tornado briefly touched down in northern Polk County. The touchdown in Polk County was indeed a separate tornado. Even though the tornado was from the same parent cell, the system had occluded and was in the process of forming a new tornado as it passed over the western part of the Des Moines area. Reports from this tornado indicate that at least 9 homes were damaged or destroyed, one business destroyed, and a school building damaged. In addition to losses to homes, one farmstead was hit with considerable damage and some livestock damage. A series of tornadoes formed on the heels of the supercell tornado as the dry line pushed into the state. Most of these were brief touchdowns, however the storms were moving around 60 MPH. Three tornadoes touched down in Boone County. The most significant tornado touched down north of Ogden. It produced a 3 mile long track up to 1/8 mile wide. Farm site hit along highway P70. Barn and grain bins destroyed, knocking out windows in house. Otherwise only minor damage to house. Debris scattered 1 mile to next farm site where there was minor damage to many buildings. Track continued north-northeast across highway E26 into the campground at Don Williams Lake. A storage building was destroyed, several trees downed, plus outhouses, picnic tables and signs were damaged. The damage track dissipated on the northeast side of the Don Williams Recreation Area. There were several brief touchdowns with relatively minor damage in Guthrie, Greene, and Hamilton Counties. A stronger tornado touched down in southeast Black Hawk County, causing significant damage to two homes in the La Porte City area. The most serious tornado in terms of loss of life occurred in Wapello County. A tornado developed in rural southern Wapello County, a mile southwest of Agency, Iowa, around 1600 CDT, on Wednesday, April 11. The tornado path was 50 to 100 yards wide with sporadic touchdowns toward the north-northeast for the next 6 miles. Survey responses indicated that the duration of impact at any one location was only 15 to 30 seconds as the tornado quickly moved through Agency and over farms at a 60 mph horizontal movement. The Odd Fellows Lodge in Agency was destroyed, and over 50 residences were damaged. Two women inside were killed, three people injured and three people had no injuries. As the storm moved through Agency, a garage was lifted and carried about 100 meters off of its foundation. The car inside was twisted and covered with debris. In another incident, one house was hit by the tornado causing damage to the house. The family dog was in the dog pen at the time. The tornado lifted the pen and twirled it through the air. The dog pen was deposited some distance downstream and what was truly amazing was the fact that the dog was uninjured. Following the tornado, U.S. Highway 34 was closed for 2 hours in order to removed debris from the highway. Governor Tom Vilsack visited the area during a storm survey. The governor spoke with Brenda Brock of the National Weather Service, Ellen Gordon, Administrator, Iowa Emergency Management Division, emergency management personnel (fire department, law enforcement, mayor) and the public. A proclamation for emergency disaster assistance was signed.
41.91971-05-05240°49'N / 94°21'W1.00 Mile200 Yards0025K0Ringgold
42.11984-06-07340°50'N / 94°57'W40°53'N / 94°50'W7.00 Miles100 Yards002.5M0Taylor
42.21984-06-07240°41'N / 94°14'W40°44'N / 94°02'W14.00 Miles150 Yards132.5M0Ringgold
43.11981-05-23240°42'N / 94°19'W40°49'N / 94°03'W15.90 Miles130 Yards00250K0Ringgold
43.22008-06-05240°04'N / 95°31'W40°12'N / 95°28'W9.00 Miles880 Yards000K0KRichardson
 Brief Description: EVENT NARRATIVE: This tornado started approximately 4 miles east of Falls City and traveled north northeast. Soon after the initial touchdown there was damage to the roof of a home and a church. The tornado then produced tree damage before blowing the roof off of a home and destroying several sheds and barns at another farmstead. Other tree, house, outbuilding and power pole damage was observed along its path before it crossed the Missouri River into Holt county Missouri. The damage path reached a half mile wide where high tension power poles were snapped northeast of Falls City. EPISODE NARRATIVE: A warm front and low pressure system over northern Kansas lifted northeast into southeast Nebraska and southwest Iowa as an unseasonably strong upper level low pressure system lifted from the Rockies into the northern plains. The front and upper level disturbance caused fast moving thunderstorms, a few severe, to develop during the late morning hours in northeast Nebraska. After a brief lull in the activity through early afternoon, additional thunderstorms developed over eastern Nebraska. The storms developed along 2 lines, one extended north of Columbus while the other stretched from southeast Nebraska into southwest Iowa. Several of the storms turned severe, including one supercell that produced an EF2 tornado in extreme southeast Nebraska. Besides the severe weather, a few of the thunderstorms produced additional areas of heavy rain that fell on saturated soils and caused some already high rivers to flood.
43.31999-04-08240°51'N / 94°54'W40°54'N / 94°54'W3.00 Miles500 Yards00500K0Taylor
 Brief Description: As mentioned in the narrative above, an intense low pressure formed to the southwest of Iowa. The low tracked northeast and lifted into eastern Nebraska. Ahead of the low, a strong low level jet of around 60 knots continued through the day. A nearly stationary frontal boundary extended east from the low. It lifted into southeast Nebraska during the day, but made little progress into southern Iowa. Lines of thunderstorms formed along the boundary through the day and lifted north rapidly. These storms were elevated in nature and as a result produced most of their severe weather in the form of hail. As the day unfolded, a sharp dry line was clearly evident on the satellite as early as 1600 UTC across Kansas. This line raced east during the day. By afternoon, a speed max had rotated around the upper low to the southwest with wind speeds measured by the Lathrop wind profiler at 100 knots at 500 mb by mid afternoon. Jet stream winds were in excess of 120 knots at the same time. Combined with the dynamic situation mentioned above, considerable moisture convergence took place near the triple point between the warm front and the dry line. Surface dew points pooled into to the mid 60s to even a few 70 degree F. dew point readings over northwest Missouri, southeast Nebraska, and southwest Iowa. Meanwhile, dew points fell into the upper 20s over northeast Kansas and south central Nebraska behind the dry line, with teens over central and south central Kansas. Thunderstorms erupted along the dry line by mid day and advanced east through the afternoon. Low level helicity values topped out between 500 and 600 (m/s)**2 just before the first tornadoes formed. Most of the storms in the warm sector became tornadic quickly. The northern limit of the tornado tracks extended about 10 miles or so north of the warm front. Tracks became intermittent very quickly as soon as the storms crossed the surface warm front due to the layer of very cold air just north of the front. Surface temperatures on the cold side of the front were only in the upper 40s to mid 50s. The entire day was very active. Initially, warm air advection thunderstorms produced hail at many locations of central and northern Iowa. Most of is was just below severe levels however. The activity that developed during the afternoon was a combination of warm air advection and the approach of the dryline. At the beginning of the event, the main weather feature was in the form of hail. There were numerous reports of hail three quarters to one and three quarters inch in diameter. The largest hail fell in Guthrie and Dallas Counties with reports of golf ball size hail. One of the storms in the initial wave of afternoon activity became stronger as it moved into southern Story County. Initially, high winds of 60 MPH or more swept through Sheldahl area of Boone County. Greene County was also affected by high winds from the storms. A tornado dropped out of the storm as it moved into the Slater area and was on the ground for about 2 miles. Initial estimates showed 44 homes and businesses damaged in Story County, one was destroyed with major damage to another. Thirty six homes and four businesses were damaged in the town of Slater. Two people were injured during the passage of the tornado. One of the injuries involved a 70 year old man who was picked up by the tornadoes winds and thrown about 10 feet before he latched on to something. His shoulder was dislocated and he required 6 stitches due to his injuries in his hand. High winds northeast of Slater knocked several cars of a Burlington Northern freight train off the tracks after they were blown more than one quarter mile down the track. It was not possible to determine of the cars were knocked off by the tornado or high winds however. This band of storms continue to race and develop northeast through the afternoon. Damage became more sporadic, however high winds occurred as far northeast as Hardin County, with 70 MPH winds reported near New Providence. Hail reports came in from as far northeast as Grundy and Black Hawk Counties, though it was only three quarters of an inch in diameter. Attention then shifted to the tornadic storms that formed near the dry line. During the afternoon, six more tornadoes touched down in Iowa, several of which were long track tornadoes. The first touched down in Taylor County and tracked through Adams, Cass, and Adair Counties. This tornado had was an F4 intensity tornado in parts of Adair and Adams Counties. Damage was extensive with $1,000,000 damage reported in both Adams and Adair Counties. Entire farmsteads were swept clean by the tornado. At one time this tornado was a mile wide wedge with a damage path nearly two miles wide due to the circulation around the tornado. Eyewitness reports indicated that the tornado split into two distinct tornadoes at times, similar to what occurred with the intense F4 tornado in Adair County of 27 May 1995. One of the farmsteads hit near Nodaway was levelled. Reports indicated that a check was blown from the house nearly 100 miles and was found in the town of Jefferson in Greene County. Other checks and papers were found strewn along the path, stretching from Jefferson all the way back to northwest Taylor County. In Adair County, one account indicated pieces of sheet metal from one farm was lifted and deposited six miles away from the farm. Two people were injured by this tornado, one in Adams County with the other in Adair County. One of the injuries Adair County was serious as a man suffered a broken back when the tornado lifted his semi-tractortrailer truck from the Interstate and threw it into a nearby field. The other injuries from this tornado were minor enough that the people were taken to the hospital, treated, and released. There was one account of a horse being picked up by the tornado. It was lifted into the air and thrown through a stand of pine trees 40 feet high. The horse suffered serious injuries and required significant medical attention do to lacerations. The horse amazingly did survive against all odds, though was said would likely lose sight in one eye. The next tornado touched down in Union County and tracked across Madison and Dallas Counties. This tornado had an F4 strength in Union and decreased to a strong F2 in Madison Counties before intensifying again to near F3 strength as it headed into Dallas County. Damage in Union County was around $2,000,000, and around $350,000 in Madison County. There was one person injured by this tornado in Union County. In an amazing account, the Union County Sheriff reported watching as the tornado lifted the car in front of him 35 feet in the air and throwing it 250 feet. The driver was inside during this time and came out of the situation uninjured. Five coal cars were knocked off the tracks in Union County by the tornado as well. This tornado also had a double structure. From eye witness accounts, which also can be shown on Doppler radar imagery, suggest a small rope like tornado passed through the Twelve Mile Lake area shortly before the passage of the main tornado. The next tornado was a weak tornado which touched down about 4 miles west of downtown Des Moines. The tornado did little damage, but did affect one house and several trees. The tornado was seen by a local television sky camera. A short time later, an F2 tornado touched down in Warren County and tracked into southeast Polk County. The track was over rural areas and damage from it was relatively minor. A more significant F3 tornado tracked from northern Lucas County, and weakened to an F2 as it moved across Warren, part of marion, and into Jasper County. One house was destroyed in Lucas County with the four people inside sustaining minor injuries. Once again, this tornado tracked across mostly rural areas, though it did hit a business and two homes in Jasper County and did $1,000,000 in damage. One person was injured in Jasper County. The last tornado touched down in Davis County at Bloomfield and tracked northeast into Wapello County with a maximum strength of F3. Damage in Davis County was over $500,000 as 64 homes and businesses were damaged in the Bloomfield area. To the northeast, the area of the tornado track was mostly rural and damage was limited to outbuildings for the most part. One farmstead reported severe damage near Floris in Davis County. The house was nearly levelled and several outbuildings were completely destroyed. Parts of the house and outbuildings were found as far as 5 miles away from the farmstead. As the storms moved north, high winds were produced over Story County east of Story City. High winds toppled a tractor semi-trailer truck east of Story City on Interstate 35, injuring the driver. Two cars and a truck were also blown off Interstate 35 in Hamilton County. Four people were injured. Two were taken to the hospital, treated, and released. Two were listed in serious condition, one with a neck fracture, the other with a shoulder fracture. The later incident appeared to be from the rear flank downdraft behind the storm and not the initial gust front. From the preliminary data, 178 homes and business were damaged or destroyed by the tornadic storms as well as countless outbuildings. There were several reports of livestock loss as well. It is truly amazing that there was no loss of life during this event and even more amazing is the fact that the injuries that did occur were all minor. Twenty counties in Iowa experienced serious damage from the storms of the day. Iowa Governor Vilsack declared several counties in Iowa disaster areas. These included Taylor, Union, Adams, and Adair Counties. High winds accompanied the storms as the moved through Appanoose County. A local gas station recorded an 81 MPH wind gust as the storms cut a half mile wide swath of destruction west of Moravia. There were numerous reports of cattle killed by the storms. Some were killed by the tornadoes and flying debris, others by lightning. Reports in Adair County, northwest of Fontanelle indicated about 25 head of cattle were struck by lightning shortly before a tornado moved through that area. As the area of storms that produced the high winds north of Ames in central Iowa moved north, they lost their punch. A few of the storms did remain quite strong however. As the area of thunderstorms moved through Cerro Gordo County, high winds blew down a 60 foot corn crib and did some other damage on a farm near Rockwell.
43.41989-05-24440°53'N / 94°27'W40°41'N / 93°59'W26.00 Miles300 Yards0025.0M0Ringgold
44.71989-05-24440°54'N / 94°28'W40°53'N / 94°27'W2.00 Miles300 Yards0025.0M0Union
44.81967-01-24239°36'N / 94°56'W39°41'N / 94°53'W6.10 Miles100 Yards00250K0Buchanan
44.82010-06-01240°48'N / 94°13'W40°49'N / 94°13'W2.00 Miles250 Yards004.0M10KRinggold
 Brief Description: EVENT NARRATIVE: A cone shape tornado was reported. Path was intermittent and the NWS survey suggests that the tornado hit a farmstead then lifted briefly skipping over some farms before setting back down and damaging another farmstead. Eyewittnesses also recount the tornado briefly lifting. EPISODE NARRATIVE: A cold front moved into Iowa from the northwest, while a warm front pushed into the southwest part of Iowa from the south during the afternoon and evening hours. Initially the airmass was very dry, however a strong push of moisture increased surface dew points into the upper 60s to low 70s by mid afternoon. Precipitable water values increased to 1.25 to 1.5 inches. The atmosphere destabilized by mid to late afternoon. Most unstable CAPE increased to 5000 J/kg as the lifted index fell to -9 to -12 C. The freezing level was relative low, around 12,000 feet. Available CAPE in the -10 to -30 C layer of the atmosphere increased to between 500 and 1000 J/kg. Downdraft CAPE was between 800 and 1000 J/kg. The atmosphere was moderately sheared with 40 to 55 kts of effective shear in the near storm environment. With the relatively dry air initially on the leading edge of the developing storms, the LCL was a relatively high 1500 meters. Thunderstorms formed in two areas. The first was over northwest Iowa along the cold frontal boundary. The second area developed over eastern Nebraska and tracked east in the warm advection area along and north of the warm frontal boundary. The two areas of storms combined during the evening hours, becoming a full fledged MCC by mid evening. All modes of severe weather occurred with this system, though the predominate mode was large hail. Thunderstorms formed rapidly along the warm frontal boundary during the mid and late afternoon. Hail up to baseball size was reported in southwest Iowa with these storms. Rapid intensification led to golf ball and larger hail in Taylor, Ringgold, Adams, and Union Counties. One of the storms produced a tornado as it moved through Ringgold County in the Tingley area. A large farmstead was hit, causing $4,000,000 damage. Eight buildings were damaged or destroyed, as well as the farmstead itself. Based upon extensive destruction to a 400 foot long metal cattle barn on the farmstead, it was determined that the tornado was of EF-2 strength with winds of up to 130 MPH. Other buildings, including the home, received extensive damage but not as widespread. Three head of cattle were killed when the cattle barn was destroyed. During the early evening the storm system transitioned into more of a high wind event. Several reports of 50 to 70 MPH winds were received. A wind gust in excess of 60 MPH threw house debris onto the street in Ottumwa. The storms produced heavy rainfall of 2 inches or more per hour. Fortunately they were moving relatively quickly. Storms trained over parts of Guthrie County. Over 4 inches of rain fell north and west of Guthrie Center. The heavy rainfall caused minor flooding with ditches filled and minor road flooding. A small area of flash flooding was reported along Seely Creek in Guthrie County with water a few feet over the road. Lightning caused at least two house fires. A house was struck east of Des Moines by one thunderstorm. The house was set on fire by the lightning. A second house was struck and set ablaze north of Ankeny.
45.01971-05-18239°34'N / 94°45'W39°40'N / 94°36'W10.40 Miles50 Yards0025K0Buchanan
45.21984-04-26339°38'N / 95°13'W39°48'N / 95°05'W15.00 Miles1200 Yards0025.0M0Doniphan
46.21984-06-07340°53'N / 94°50'W40°59'N / 94°44'W11.00 Miles100 Yards002.5M0Adams
46.21964-06-19340°43'N / 95°21'W40°50'N / 95°11'W11.50 Miles350 Yards022.5M0Page
46.81989-05-24440°59'N / 94°43'W40°54'N / 94°28'W12.00 Miles1760 Yards0025.0M0Adams
46.91964-06-22440°42'N / 95°27'W40°46'N / 95°14'W11.90 Miles400 Yards00250K0Fremont
46.91965-04-10339°32'N / 94°57'W39°40'N / 94°45'W14.00 Miles200 Yards02250K0Buchanan
47.11973-04-19239°42'N / 94°12'W1.00 Mile50 Yards003K0Clinton
47.51964-04-12240°54'N / 95°03'W2.00 Miles150 Yards0025K0Montgomery
48.41989-05-24440°41'N / 93°59'W40°38'N / 93°52'W9.00 Miles300 Yards0025.0M0Decatur
48.81973-04-19239°53'N / 95°28'W0.20 Mile100 Yards000K0Brown
49.11955-03-14339°39'N / 94°15'W39°39'N / 94°13'W00250K0Clinton
49.41959-05-18240°59'N / 94°44'W1.00 Mile200 Yards00250K0Adams
49.61959-05-10240°56'N / 95°03'W1.00 Mile200 Yards003K0Montgomery
49.61958-07-14341°04'N / 94°36'W40°54'N / 94°35'W11.20 Miles100 Yards01250K0Adams
49.81971-05-18239°32'N / 94°48'W39°34'N / 94°45'W3.60 Miles50 Yards0225K0Buchanan
49.81990-07-25240°49'N / 94°08'W40°51'N / 94°04'W4.00 Miles73 Yards00250K0Ringgold

* 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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