Mountain Valley Unified School District Natural Disasters and Weather Extremes
The chance of earthquake damage in Mountain Valley Unified School District is much lower than California average and is higher than the national average. The risk of tornado damage in Mountain Valley Unified School District is lower than California average and is much lower than the national average.
Earthquake Index, #895
| Mountain Valley Unified School District | 2.64 |
| California | 21.80 |
| 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, #281
| Mountain Valley Unified School District | 0.0063 |
| California | 0.0068 |
| 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, #1026
| Mountain Valley Unified School District | 0.00 |
| California | 18.56 |
| 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 157 other weather extremes events within 50 miles of Mountain Valley Unified School District 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: | 0 | Cold: | 0 | Dense Fog: | 1 | Drought: | 0 |
| Dust Storm: | 0 | Flood: | 14 | Hail: | 22 | Heat: | 0 | Heavy Snow: | 17 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 0 | Landslide: | 0 | Strong Wind: | 19 |
| Thunderstorm Winds: | 9 | Tropical Storm: | 0 | Wildfire: | 9 | Winter Storm: | 41 | Winter Weather: | 1 |
| Other: | 24 | ||||||||
Volcanos Nearby
A total of 5 volcanoes are found in or near Mountain Valley Unified School District.
| Distance (miles) | Name | Region | Latitude | Longitude | Elevation (foot) | Type | Status | Last Eruption |
| 82.5 | Shasta | US-California, United States | 41.42 | -122.2 | 4317 | Stratovolcano | Historical | Last known eruption 1700-1799 |
| 88.8 | Twin Buttes | US-California, United States | 40.78 | -121.6 | 1631 | Cinder cone | Holocene | Unknown |
| 90.4 | Tumble Buttes | US-California, United States | 40.68 | -121.55 | 2191 | Cinder cone | Holocene | Unknown |
| 92.2 | Lassen Volc Center | US-California, United States | 40.492 | -121.508 | 3187 | Stratovolcano | Historical | Last known eruption 1900-1963 |
| 96.4 | Potato Butte | US-California, United States | 40.63 | -121.43 | 1532 | Shield volcano | Holocene | Unknown |
Historical Earthquake Events
A total of 30 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Mountain Valley Unified School District.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 47.0 | 1954-12-21 | 6.6 | N/A | 40.82 | -124.08 |
| 38.7 | 1931-09-09 | 5.8 | N/A | 40.5 | -124 |
| 46.0 | 1975-06-07 | 5.7 | N/A | 40.57 | -124.14 |
| 47.0 | 1954-12-30 | 5.3 | N/A | 40.82 | -124.08 |
| 28.5 | 1977-07-12 | 5 | 20 | 40.28 | -123.69 |
| 41.9 | 1951-11-14 | 4.7 | N/A | 40.43 | -124.05 |
| 45.1 | 1977-06-07 | 4.6 | 28 | 41 | -123.87 |
| 29.7 | 1969-10-22 | 4.4 | N/A | 40.4 | -123.8 |
| 33.4 | 1977-04-02 | 4.4 | 14 | 40.57 | -123.9 |
| 28.0 | 1980-10-13 | 4.3 | 20 | 40.43 | -123.78 |
| 24.7 | 1969-12-14 | 4.2 | N/A | 40.4 | -123.7 |
| 41.9 | 1950-03-27 | 4.2 | N/A | 40.27 | -123.98 |
| 18.4 | 1967-02-25 | 4.1 | N/A | 40.3 | -123.1 |
| 35.6 | 1970-08-19 | 4.1 | 7 | 40.2 | -122.75 |
| 42.3 | 1970-08-14 | 4 | 4 | 40.16 | -123.9 |
| 46.8 | 1970-08-22 | 3.9 | 31 | 40.3 | -124.1 |
| 23.8 | 1971-04-19 | 3.8 | 2 | 40.82 | -123.52 |
| 36.9 | 1970-03-12 | 3.8 | 12 | 40.46 | -123.96 |
| 38.3 | 1961-11-09 | 3.8 | N/A | 40.43 | -123.98 |
| 20.3 | 1978-09-22 | 3.7 | 20 | 40.63 | -123.63 |
| 25.7 | 1985-09-02 | 3.7 | 24 | 40.58 | -123.75 |
| 28.6 | 1985-11-23 | 3.7 | 19 | 40.26 | -123.67 |
| 18.2 | 1966-07-03 | 3.6 | N/A | 40.6 | -123.6 |
| 38.3 | 1958-06-11 | 3.6 | N/A | 40.65 | -123.98 |
| 47.5 | 1982-03-17 | 3.6 | 25 | 40.4 | -124.15 |
| 27.3 | 1977-07-12 | 3.5 | 21 | 40.28 | -123.66 |
| 35.9 | 1954-12-22 | 3.5 | N/A | 40.78 | -123.87 |
| 43.9 | 1954-11-19 | 3.5 | N/A | 40.5 | -124.1 |
| 44.3 | 1954-12-24 | 3.5 | N/A | 40.73 | -124.07 |
| 45.3 | 1979-08-02 | 3.5 | 5 | 40.17 | -123.98 |
Historical Tornado Events
No historical tornado events that had recorded magnitudes of 2 or above found in or near Mountain Valley Unified School District.
No historical earthquake events found in or near Mountain Valley Unified School District.
* 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.