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Potter County Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Potter County is about the same as South Dakota average and is much lower than the national average. The risk of tornado damage in Potter County 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, #39

Potter County
0.01
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

Potter County
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, #36

Potter County
72.04
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 5,365 other weather extremes events within 50 miles of Potter County were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:15Cold:2Dense Fog:0Drought:0
Dust Storm:0Flood:271Hail:3,004Heat:1Heavy Snow:11
High Surf:0Hurricane:0Ice Storm:0Landslide:0Strong Wind:25
Thunderstorm Winds:1,909Tropical Storm:0Wildfire:20Winter Storm:24Winter Weather:0
Other:83 

Volcanos Nearby

No volcano is found in or near Potter County.

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Potter County.

No historical earthquake events found in or near Potter County.

Historical Tornado Events

A total of 22 historical tornado events that had recorded magnitude of 2 or above found in or near Potter County.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
3.41955-04-19245°01'N / 99°56'W45°10'N / 99°51'W10.80 Miles67 Yards000K0Potter
7.21955-04-19245°01'N / 100°07'W45°16'N / 99°59'W18.20 Miles27 Yards003K0Potter
13.31964-06-18245°12'N / 99°49'W45°15'N / 99°47'W2.70 Miles200 Yards0025K0Potter
15.21961-06-28245°15'N / 99°47'W1.00 Mile33 Yards00250K0Walworth
17.31970-07-18245°06'N / 100°18'W000K0Potter
18.42001-07-18245°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.
25.71964-06-18245°15'N / 99°47'W45°34'N / 99°43'W21.90 Miles200 Yards0225K0Walworth
26.21971-10-01244°43'N / 100°10'W0.50 Mile300 Yards0025K0Sully
28.82010-05-22245°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.
30.41959-07-03245°30'N / 99°52'W0025K0Walworth
30.41968-06-20345°30'N / 100°02'W000K0Walworth
30.52010-05-22445°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.
32.41968-06-20345°32'N / 100°13'W45°30'N / 100°02'W8.80 Miles200 Yards000K0Walworth
36.01983-09-02244°54'N / 99°15'W0.20 Mile10 Yards003K0Hand
36.41964-06-08245°05'N / 100°42'W45°09'N / 100°41'W3.80 Miles33 Yards010K0Dewey
39.91957-06-09345°02'N / 99°08'W1.00 Mile33 Yards0025K0Faulk
40.21955-04-19245°15'N / 99°10'W45°22'N / 99°14'W8.20 Miles100 Yards000K0Edmunds
41.71966-07-26245°00'N / 99°06'W003K0Faulk
41.81970-06-14245°40'N / 100°02'W2.50 Miles1760 Yards0025K0Campbell
43.12006-08-24345°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.
43.11983-09-02244°48'N / 99°09'W0.20 Mile10 Yards0025K0Hand
48.21992-06-30244°22'N / 99°55'W0.30 Mile30 Yards0025K0Hughes


* 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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