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Sully County Natural Disasters and Weather Extremes

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

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

Earthquake Index, #37

Sully County
0.02
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

Sully 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, #43

Sully County
55.58
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 5,310 other weather extremes events within 50 miles of Sully 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:216Hail:3,060Heat:1Heavy Snow:11
High Surf:0Hurricane:0Ice Storm:0Landslide:0Strong Wind:26
Thunderstorm Winds:1,879Tropical Storm:0Wildfire:14Winter Storm:24Winter Weather:0
Other:62 

Volcanos Nearby

No volcano is found in or near Sully County.

Historical Earthquake Events

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

No historical earthquake events found in or near Sully County.

Historical Tornado Events

A total of 14 historical tornado events that had recorded magnitude of 2 or above found in or near Sully County.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
1.81971-10-01244°43'N / 100°10'W0.50 Mile300 Yards0025K0Sully
26.71992-06-30244°22'N / 99°55'W0.30 Mile30 Yards0025K0Hughes
27.31970-07-18245°06'N / 100°18'W000K0Potter
27.91973-07-23344°21'N / 100°21'W2.50 Miles500 Yards0102.5M0Hughes
27.91968-06-20244°22'N / 100°24'W000K0Stanley
28.11955-04-19245°01'N / 99°56'W45°10'N / 99°51'W10.80 Miles67 Yards000K0Potter
29.21955-04-19245°01'N / 100°07'W45°16'N / 99°59'W18.20 Miles27 Yards003K0Potter
38.31964-06-18245°12'N / 99°49'W45°15'N / 99°47'W2.70 Miles200 Yards0025K0Potter
38.61964-06-08245°05'N / 100°42'W45°09'N / 100°41'W3.80 Miles33 Yards010K0Dewey
40.21961-06-28245°15'N / 99°47'W1.00 Mile33 Yards00250K0Walworth
42.42001-07-18245°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.
43.21960-08-24244°22'N / 101°01'W44°26'N / 100°45'W13.60 Miles200 Yards0125K0Stanley
44.91983-09-02244°54'N / 99°15'W0.20 Mile10 Yards003K0Hand
47.71974-05-19244°21'N / 101°01'W44°25'N / 100°56'W5.60 Miles33 Yards000K0Stanley


* 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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