Harrison K-12 Schools Natural Disasters and Weather Extremes
The chance of earthquake damage in Harrison K-12 Schools is much higher than Montana average and is much higher than the national average. The risk of tornado damage in Harrison K-12 Schools is about the same as Montana average and is much lower than the national average.
Earthquake Index, #13
| Harrison K-12 Schools | 6.68 |
| Montana | 1.98 |
| 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, #39
| Harrison K-12 Schools | 0.0011 |
| Montana | 0.0002 |
| 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, #343
| Harrison K-12 Schools | 1.88 |
| Montana | 7.73 |
| 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 564 other weather extremes events within 50 miles of Harrison K-12 Schools 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: | 19 | Cold: | 23 | Dense Fog: | 1 | Drought: | 8 |
| Dust Storm: | 0 | Flood: | 30 | Hail: | 126 | Heat: | 2 | Heavy Snow: | 100 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 3 | Landslide: | 0 | Strong Wind: | 64 |
| Thunderstorm Winds: | 108 | Tropical Storm: | 0 | Wildfire: | 6 | Winter Storm: | 51 | Winter Weather: | 9 |
| Other: | 14 | ||||||||
Volcanos Nearby
A total of 1 volcano is found in or near Harrison K-12 Schools.
| Distance (miles) | Name | Region | Latitude | Longitude | Elevation (foot) | Type | Status | Last Eruption |
| 98.9 | Yellowstone | US-Wyoming, United States | 44.43 | -110.67 | 2805 | Caldera | Tephrochronology | Last known eruption B.C. (Holocene) |
Historical Earthquake Events
A total of 25 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Harrison K-12 Schools.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 36.9 | 1925-06-28 | 6.8 | N/A | 46 | -111.2 |
| 47.4 | 1959-08-19 | 5 | N/A | 45 | -111.4 |
| 3.1 | 1970-06-26 | 4.9 | 26 | 45.6 | -111.8 |
| 44.7 | 1970-01-07 | 4.9 | 33 | 45 | -111.6 |
| 36.6 | 1977-03-11 | 4.8 | 5 | 46.13 | -111.48 |
| 47.5 | 1966-03-07 | 4.8 | N/A | 46.3 | -111.5 |
| 30.9 | 1965-11-03 | 4.5 | N/A | 45.2 | -111.9 |
| 34.4 | 1972-11-02 | 4.5 | 5 | 46.1 | -111.5 |
| 45.8 | 1959-08-19 | 4.5 | N/A | 45 | -111.5 |
| 48.6 | 1963-02-16 | 4.5 | N/A | 46.1 | -111 |
| 23.6 | 1974-07-16 | 4.4 | 10 | 45.84 | -111.37 |
| 40.9 | 1970-10-18 | 4.3 | 15 | 46.2 | -111.5 |
| 41.7 | 1975-01-29 | 4.2 | N/A | 45.07 | -111.47 |
| 32.6 | 1966-09-19 | 4 | N/A | 45.9 | -111.2 |
| 40.6 | 1975-05-02 | 4 | N/A | 46.18 | -111.44 |
| 47.4 | 1963-04-27 | 4 | N/A | 45 | -111.4 |
| 23.5 | 1964-11-24 | 3.9 | N/A | 45.3 | -111.7 |
| 40.2 | 1984-02-28 | 3.8 | 5 | 46.18 | -111.46 |
| 45.8 | 1967-01-10 | 3.8 | N/A | 45 | -111.5 |
| 7.1 | 1965-04-06 | 3.7 | N/A | 45.6 | -111.9 |
| 23.9 | 1983-02-16 | 3.7 | 5 | 45.93 | -111.5 |
| 32.3 | 1971-01-11 | 3.6 | N/A | 45.2 | -112 |
| 34.3 | 1976-04-05 | 3.6 | 5 | 46.13 | -111.68 |
| 40.9 | 1972-11-02 | 3.5 | 5 | 46.2 | -111.5 |
| 42.6 | 1972-11-02 | 3.5 | 5 | 46.2 | -111.4 |
Historical Tornado Events
No historical tornado events that had recorded magnitudes of 2 or above found in or near Harrison K-12 Schools.
No historical earthquake events found in or near Harrison K-12 Schools.
* 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.