Rapid City School District 51-4 Natural Disasters and Weather Extremes
The chance of earthquake damage in Rapid City School District 51-4 is about the same as South Dakota average and is much lower than the national average. The risk of tornado damage in Rapid City School District 51-4 is lower than South Dakota average and is lower than the national average.
Earthquake Index, #37
| Rapid City School District 51-4 | 0.04 |
| 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
| Rapid City School District 51-4 | 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, #119
| Rapid City School District 51-4 | 69.09 |
| 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 2,442 other weather extremes events within 50 miles of Rapid City School District 51-4 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: | 17 | Cold: | 2 | Dense Fog: | 0 | Drought: | 0 |
| Dust Storm: | 0 | Flood: | 73 | Hail: | 1,610 | Heat: | 1 | Heavy Snow: | 14 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 1 | Landslide: | 0 | Strong Wind: | 97 |
| Thunderstorm Winds: | 522 | Tropical Storm: | 0 | Wildfire: | 9 | Winter Storm: | 32 | Winter Weather: | 2 |
| Other: | 62 | ||||||||
Volcanos Nearby
No volcano is found in or near Rapid City School District 51-4.
Historical Earthquake Events
A total of 1 historical earthquake event that had a recorded magnitude of 3.5 or above found in or near Rapid City School District 51-4.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 17.8 | 1966-06-26 | 4.1 | N/A | 44.3 | -103.4 |
Historical Tornado Events
A total of 16 historical tornado events that had recorded magnitude of 2 or above found in or near Rapid City School District 51-4.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 1.9 | 1967-06-18 | 2 | 44°04'N / 103°12'W | 1.00 Mile | 150 Yards | 0 | 3 | 2.5M | 0 | Pennington | |
| 7.9 | 1991-05-11 | 2 | 44°11'N / 103°13'W | 1.00 Mile | 300 Yards | 0 | 5 | 250K | 0 | Meade | |
| 9.0 | 1991-05-11 | 3 | 44°12'N / 103°13'W | 2.00 Miles | 500 Yards | 0 | 20 | 2.5M | 0 | Meade | |
| 12.5 | 1966-07-23 | 2 | 43°58'N / 103°28'W | 43°56'N / 103°23'W | 3.80 Miles | 440 Yards | 0 | 5 | 25K | 0 | Pennington |
| 22.9 | 1965-06-11 | 2 | 43°49'N / 103°32'W | 0 | 0 | 3K | 0 | Custer | |||
| 26.1 | 1966-06-22 | 2 | 43°41'N / 103°14'W | 43°42'N / 103°12'W | 0 | 0 | 25K | 0 | Custer | ||
| 27.2 | 1969-07-23 | 2 | 44°18'N / 103°41'W | 0.20 Mile | 33 Yards | 0 | 0 | 0K | 0 | Lawrence | |
| 29.4 | 1968-06-20 | 2 | 44°11'N / 103°56'W | 44°04'N / 103°43'W | 13.10 Miles | 100 Yards | 0 | 0 | 0K | 0 | Lawrence |
| 36.3 | 1965-07-12 | 3 | 44°15'N / 104°03'W | 44°13'N / 103°49'W | 11.40 Miles | 1600 Yards | 0 | 0 | 250K | 0 | Lawrence |
| 39.7 | 1965-07-18 | 3 | 44°36'N / 103°33'W | 0 | 0 | 25K | 0 | Meade | |||
| 40.7 | 1972-06-28 | 2 | 44°33'N / 103°43'W | 0.10 Mile | 33 Yards | 0 | 1 | 3K | 0 | Lincoln | |
| 42.6 | 1961-06-22 | 2 | 43°31'N / 103°37'W | 0 | 0 | 3K | 0 | Custer | |||
| 45.5 | 1955-09-20 | 2 | 44°43'N / 103°25'W | 1.30 Miles | 177 Yards | 0 | 0 | 3K | 0 | Butte | |
| 46.9 | 1965-07-12 | 3 | 44°15'N / 104°15'W | 44°15'N / 104°03'W | 9.40 Miles | 1400 Yards | 0 | 0 | 250K | 0 | Crook |
| 49.1 | 1969-07-14 | 2 | 43°22'N / 103°23'W | 0.10 Mile | 33 Yards | 0 | 0 | 25K | 0 | Fall River | |
| 49.5 | 1972-05-26 | 2 | 44°45'N / 102°55'W | 1.50 Miles | 440 Yards | 0 | 0 | 25K | 0 | Meade |
* 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.