Brookings County Natural Disasters and Weather Extremes
The chance of earthquake damage in Brookings County is about the same as South Dakota average and is much lower than the national average. The risk of tornado damage in Brookings County is higher than South Dakota average and is higher than the national average.
Earthquake Index, #36
| Brookings 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
| Brookings 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, #14
| Brookings County | 149.27 |
| 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 9,524 other weather extremes events within 50 miles of Brookings County were recorded from 1950 to 2010. The following is a break down of these events:
| Type | Count | Type | Count | Type | Count | Type | Count | Type | Count |
| Avalanche: | 0 | Blizzard: | 98 | Cold: | 30 | Dense Fog: | 3 | Drought: | 14 |
| Dust Storm: | 0 | Flood: | 591 | Hail: | 4,827 | Heat: | 12 | Heavy Snow: | 81 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 13 | Landslide: | 0 | Strong Wind: | 112 |
| Thunderstorm Winds: | 3,336 | Tropical Storm: | 0 | Wildfire: | 3 | Winter Storm: | 131 | Winter Weather: | 82 |
| Other: | 191 | ||||||||
Volcanos Nearby
No volcano is found in or near Brookings County.
Historical Earthquake Events
A total of 1 historical earthquake event that had a recorded magnitude of 3.5 or above found in or near Brookings County.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 25.6 | 1982-07-11 | 3.6 | 5 | 44.01 | -96.72 |
Historical Tornado Events
A total of 41 historical tornado events that had recorded magnitude of 2 or above found in or near Brookings County.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 8.6 | 1971-06-19 | 2 | 44°38'N / 97°06'W | 44°22'N / 96°27'W | 36.80 Miles | 33 Yards | 0 | 0 | 0K | 0 | Hamlin |
| 8.9 | 1971-06-19 | 2 | 44°27'N / 96°39'W | 0 | 0 | 0K | 0 | Brookings | |||
| 9.6 | 1961-06-21 | 3 | 44°00'N / 97°05'W | 44°31'N / 96°43'W | 39.90 Miles | 33 Yards | 0 | 0 | 250K | 0 | Minnehaha |
| 13.5 | 1971-06-19 | 2 | 44°34'N / 96°52'W | 0 | 0 | 3K | 0 | Deuel | |||
| 14.8 | 1992-06-16 | 3 | 44°21'N / 97°07'W | 44°19'N / 97°04'W | 2.00 Miles | 100 Yards | 0 | 0 | 2.5M | 0 | Brookings |
| 16.3 | 1970-06-15 | 3 | 44°09'N / 96°57'W | 44°10'N / 96°54'W | 0 | 0 | 250K | 0 | Lake | ||
| 17.0 | 1986-07-18 | 2 | 44°34'N / 96°42'W | 44°35'N / 96°29'W | 17.00 Miles | 150 Yards | 0 | 0 | 25K | 0 | Deuel |
| 17.1 | 1992-06-16 | 3 | 44°21'N / 97°10'W | 44°21'N / 97°07'W | 2.00 Miles | 100 Yards | 0 | 0 | 2.5M | 0 | Kingsbury |
| 24.6 | 1968-06-21 | 2 | 44°24'N / 96°28'W | 44°22'N / 96°08'W | 16.40 Miles | 30 Yards | 0 | 1 | 0K | 0 | Lincoln |
| 25.1 | 1956-06-29 | 2 | 44°00'N / 96°53'W | 44°02'N / 96°34'W | 15.60 Miles | 33 Yards | 0 | 1 | 3K | 0 | Moody |
| 26.2 | 1961-06-21 | 3 | 44°33'N / 97°32'W | 44°00'N / 97°05'W | 43.90 Miles | 33 Yards | 0 | 0 | 250K | 0 | Kingsbury |
| 26.8 | 1956-06-29 | 2 | 44°00'N / 96°58'W | 44°00'N / 96°53'W | 3.00 Miles | 33 Yards | 0 | 0 | 3K | 0 | Lake |
| 27.2 | 1986-07-18 | 2 | 44°34'N / 97°27'W | 44°35'N / 97°06'W | 14.00 Miles | 100 Yards | 0 | 0 | 25K | 0 | Hamlin |
| 29.4 | 1965-05-24 | 2 | 44°00'N / 97°10'W | 44°07'N / 97°13'W | 7.90 Miles | 33 Yards | 0 | 0 | 0K | 0 | Lake |
| 30.4 | 1955-07-07 | 4 | 44°29'N / 96°12'W | 30.00 Miles | 33 Yards | 1 | 13 | 2.5M | 0 | Lyon | |
| 31.8 | 1981-07-22 | 2 | 44°47'N / 97°06'W | 0 | 0 | 250K | 0 | Hamlin | |||
| 32.0 | 1955-04-19 | 2 | 44°17'N / 96°09'W | 44°25'N / 96°09'W | 9.20 Miles | 80 Yards | 0 | 0 | 250K | 0 | Lincoln |
| 32.3 | 1965-05-24 | 2 | 44°00'N / 97°11'W | 0 | 0 | 0K | 0 | Lake | |||
| 33.5 | 2000-07-11 | 2 | 43°58'N / 97°10'W | 43°57'N / 97°07'W | 2.00 Miles | 100 Yards | 0 | 0 | 50K | 0 | Lake |
| Brief Description: A tornado destroyed storage sheds, lighting, fencing, and caused other damage at Lake County Speedway. The tornado also damaged crops over a small area. | |||||||||||
| 34.3 | 1969-06-25 | 2 | 43°51'N / 96°24'W | 44°06'N / 96°23'W | 17.00 Miles | 120 Yards | 0 | 0 | 250K | 0 | Pipestone |
| 35.8 | 1992-08-09 | 2 | 43°52'N / 96°56'W | 3.00 Miles | 250 Yards | 0 | 0 | 2.5M | 0 | Lake | |
| 37.7 | 1987-07-11 | 2 | 43°50'N / 96°44'W | 43°50'N / 96°42'W | 5.00 Miles | 100 Yards | 0 | 0 | 25K | 0 | Minnehaha |
| 37.8 | 1992-06-16 | 3 | 44°05'N / 97°32'W | 44°11'N / 97°26'W | 3.00 Miles | 73 Yards | 0 | 0 | 2.5M | 0 | Miner |
| 38.9 | 1992-06-16 | 2 | 43°47'N / 96°56'W | 43°51'N / 96°51'W | 5.00 Miles | 50 Yards | 0 | 0 | 2.5M | 0 | Minnehaha |
| 39.0 | 1957-06-10 | 2 | 43°51'N / 97°05'W | 0 | 0 | 0K | 0 | Lake | |||
| 39.1 | 1979-06-19 | 2 | 44°54'N / 97°06'W | 0 | 0 | 2.5M | 0 | Codington | |||
| 40.4 | 1983-07-18 | 3 | 44°54'N / 97°10'W | 0.50 Mile | 100 Yards | 0 | 0 | 2.5M | 0 | Codington | |
| 40.5 | 1965-05-08 | 2 | 43°46'N / 96°49'W | 43°49'N / 96°54'W | 4.50 Miles | 10 Yards | 0 | 0 | 25K | 0 | Clay |
| 41.4 | 2003-06-24 | 2 | 44°25'N / 97°39'W | 44°26'N / 97°37'W | 2.20 Miles | 200 Yards | 0 | 0 | 200K | 0 | Kingsbury |
| Brief Description: A tornado caused heavy damage to farm buildings including homes. | |||||||||||
| 41.6 | 1984-05-12 | 3 | 44°50'N / 97°30'W | 44°48'N / 97°15'W | 13.00 Miles | 1320 Yards | 0 | 0 | 2.5M | 0 | Codington |
| 42.3 | 1962-07-07 | 2 | 44°42'N / 97°33'W | 44°40'N / 97°32'W | 0 | 0 | 25K | 0 | Clark | ||
| 43.9 | 1953-05-29 | 2 | 44°39'N / 97°37'W | 44°41'N / 97°34'W | 1.90 Miles | 33 Yards | 0 | 0 | 25K | 0 | Clark |
| 44.1 | 1984-06-07 | 2 | 44°01'N / 97°32'W | 0.10 Mile | 60 Yards | 0 | 0 | 250K | 0 | Miner | |
| 44.5 | 2008-06-05 | 2 | 43°43'N / 96°46'W | 43°45'N / 96°44'W | 3.00 Miles | 100 Yards | 0 | 0 | 0K | 0K | Minnehaha |
| Brief Description: EVENT NARRATIVE: A tornado caused damage to silos, farm buildings, power lines, and numerous trees. EPISODE NARRATIVE: Thunderstorms produced numerous events of tornadoes, large hail and damaging winds over southeast South Dakota from late morning through the evening of June 5th. The thunderstorms also produced heavy rain which resulted in flash flooding at several locations. | |||||||||||
| 44.6 | 1962-05-16 | 2 | 44°10'N / 97°39'W | 0 | 0 | 0K | 0 | Miner | |||
| 45.5 | 2007-05-05 | 2 | 44°04'N / 97°36'W | 44°04'N / 97°37'W | 1.00 Mile | 100 Yards | 0 | 0 | 20K | 0K | Miner |
| Brief Description: EVENT NARRATIVE: A tornado damaged outbuildings and destroyed a hunting lodge. 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. | |||||||||||
| 45.8 | 1964-06-08 | 2 | 44°47'N / 97°32'W | 0 | 0 | 0K | 0 | Clark | |||
| 46.1 | 1965-05-08 | 2 | 43°57'N / 97°30'W | 43°59'N / 97°34'W | 3.30 Miles | 243 Yards | 0 | 0 | 25K | 0 | Miner |
| 46.9 | 1969-06-25 | 2 | 43°40'N / 96°25'W | 43°51'N / 96°24'W | 12.30 Miles | 120 Yards | 0 | 5 | 250K | 0 | Rock |
| 46.9 | 1985-04-20 | 3 | 43°55'N / 96°05'W | 44°01'N / 96°00'W | 7.20 Miles | 250 Yards | 0 | 2 | 2.5M | 0 | Murray |
| 47.6 | 1985-04-20 | 3 | 43°54'N / 96°06'W | 43°55'N / 96°05'W | 0.80 Mile | 250 Yards | 0 | 0 | 2.5M | 0 | Pipestone |
* 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.