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Green Grass, SD Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Green Grass is about the same as South Dakota average and is much lower than the national average. The risk of tornado damage in Green Grass is much 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, #370

Green Grass, SD
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

Green Grass, 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, #416

Green Grass, SD
33.56
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 856 other weather extremes events within 50 miles of Green Grass, 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:48Hail:505Heat:0Heavy Snow:0
High Surf:0Hurricane:0Ice Storm:0Landslide:0Strong Wind:0
Thunderstorm Winds:292Tropical Storm:0Wildfire:4Winter Storm:0Winter Weather:0
Other:7 

Volcanos Nearby

No volcano is found in or near Green Grass, SD.

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Green Grass, SD.

No historical earthquake events found in or near Green Grass, SD.

Historical Tornado Events

A total of 11 historical tornado events that had recorded magnitude of 2 or above found in or near Green Grass, SD.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
7.52010-06-16245°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.
9.41955-04-19245°03'N / 101°10'W003K0Dewey
11.81953-06-02245°00'N / 101°14'W45°01'N / 101°06'W5.90 Miles33 Yards0025K0Dewey
17.22010-06-16245°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.
24.91983-06-21345°24'N / 101°43'W45°26'N / 101°34'W6.00 Miles300 Yards00250K0Ziebach
29.11964-06-08245°05'N / 100°42'W45°09'N / 100°41'W3.80 Miles33 Yards010K0Dewey
45.32010-05-24245°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.
46.51969-07-07245°48'N / 101°00'W000K0Lawrence
47.21969-08-12245°30'N / 102°12'W45°29'N / 102°04'W6.10 Miles33 Yards0125K0Perkins
47.51986-07-18245°31'N / 102°14'W45°24'N / 102°06'W10.50 Miles140 Yards003K0Perkins
49.32010-05-24245°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.


* 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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