Harding County School District 31-1 Natural Disasters and Weather Extremes
The chance of earthquake damage in Harding County School District 31-1 is about the same as South Dakota average and is much lower than the national average. The risk of tornado damage in Harding County School District 31-1 is much lower than South Dakota average and is much lower than the national average.
Earthquake Index, #158
| Harding County School District 31-1 | 0.00 |
| 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
| Harding County School District 31-1 | 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, #159
| Harding County School District 31-1 | 17.23 |
| 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 955 other weather extremes events within 50 miles of Harding County School District 31-1 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: | 43 | Cold: | 16 | Dense Fog: | 0 | Drought: | 5 |
| Dust Storm: | 0 | Flood: | 20 | Hail: | 435 | Heat: | 2 | Heavy Snow: | 29 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 0 | Landslide: | 0 | Strong Wind: | 61 |
| Thunderstorm Winds: | 274 | Tropical Storm: | 0 | Wildfire: | 6 | Winter Storm: | 36 | Winter Weather: | 8 |
| Other: | 20 | ||||||||
Volcanos Nearby
No volcano is found in or near Harding County School District 31-1.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Harding County School District 31-1.
No historical earthquake events found in or near Harding County School District 31-1.
Historical Tornado Events
A total of 3 historical tornado events that had recorded magnitude of 2 or above found in or near Harding County School District 31-1.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 25.8 | 1969-07-07 | 4 | 45°17'N / 103°45'W | 1.80 Miles | 133 Yards | 0 | 0 | 25K | 0 | Harding | |
| 44.1 | 1977-06-14 | 2 | 46°15'N / 103°53'W | 46°12'N / 103°43'W | 8.20 Miles | 33 Yards | 0 | 1 | 250K | 0 | Bowman |
| 45.3 | 1963-07-18 | 3 | 44°59'N / 103°26'W | 44°57'N / 103°23'W | 2.30 Miles | 33 Yards | 0 | 0 | 250K | 0 | Butte |
* 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.