Cottonwood Union Elementary School District Natural Disasters and Weather Extremes
The chance of earthquake damage in Cottonwood Union Elementary School District is much lower than California average and is about the same as the national average. The risk of tornado damage in Cottonwood Union Elementary School District is lower than California average and is much lower than the national average.
Earthquake Index, #969
| Cottonwood Union Elementary School District | 1.82 |
| 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, #61
| Cottonwood Union Elementary School District | 0.0249 |
| 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, #782
| Cottonwood Union Elementary School District | 4.74 |
| 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 200 other weather extremes events within 50 miles of Cottonwood Union Elementary 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: | 2 | Drought: | 0 |
| Dust Storm: | 0 | Flood: | 12 | Hail: | 30 | Heat: | 0 | Heavy Snow: | 17 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 0 | Landslide: | 0 | Strong Wind: | 20 |
| Thunderstorm Winds: | 15 | Tropical Storm: | 0 | Wildfire: | 24 | Winter Storm: | 42 | Winter Weather: | 1 |
| Other: | 37 | ||||||||
Volcanos Nearby
A total of 9 volcanoes are found in or near Cottonwood Union Elementary School District.
| Distance (miles) | Name | Region | Latitude | Longitude | Elevation (foot) | Type | Status | Last Eruption |
| 41.3 | Lassen Volc Center | US-California, United States | 40.492 | -121.508 | 3187 | Stratovolcano | Historical | Last known eruption 1900-1963 |
| 42.9 | Tumble Buttes | US-California, United States | 40.68 | -121.55 | 2191 | Cinder cone | Holocene | Unknown |
| 44.1 | Twin Buttes | US-California, United States | 40.78 | -121.6 | 1631 | Cinder cone | Holocene | Unknown |
| 47.4 | Potato Butte | US-California, United States | 40.63 | -121.43 | 1532 | Shield volcano | Holocene | Unknown |
| 61.1 | Big Cave | US-California, United States | 40.955 | -121.365 | 1259 | Shield volcano | Holocene | Unknown |
| 68.8 | Brushy Butte | US-California, United States | 41.178 | -121.443 | 1174 | Shield volcano | Holocene | Unknown |
| 69.7 | Shasta | US-California, United States | 41.42 | -122.2 | 4317 | Stratovolcano | Historical | Last known eruption 1700-1799 |
| 78.0 | Eagle Lake Field | US-California, United States | 40.63 | -120.83 | 1652 | Fissure vent | Holocene | Unknown |
| 88.8 | Medicine Lake | US-California, United States | 41.58 | -121.57 | 2412 | Shield volcano | Radiocarbon | Last known eruption A.D. 1-1499 |
Historical Earthquake Events
A total of 17 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Cottonwood Union Elementary School District.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 30.9 | 1940-02-08 | 6 | N/A | 40.4 | -121.7 |
| 43.0 | 1950-03-20 | 5.5 | N/A | 40.45 | -121.47 |
| 42.1 | 1963-09-13 | 5.4 | N/A | 40 | -121.7 |
| 28.4 | 1970-08-19 | 4.1 | 7 | 40.2 | -122.75 |
| 41.8 | 1950-11-14 | 4.1 | N/A | 40.5 | -121.5 |
| 43.5 | 1967-02-25 | 4.1 | N/A | 40.3 | -123.1 |
| 41.6 | 1950-11-14 | 4 | N/A | 40.48 | -121.5 |
| 49.1 | 1970-06-13 | 4 | 3 | 40.92 | -121.63 |
| 47.6 | 1947-11-10 | 3.9 | N/A | 39.8 | -122.7 |
| 49.1 | 1950-01-16 | 3.8 | N/A | 40.25 | -121.38 |
| 32.3 | 1977-05-31 | 3.7 | 15 | 40.88 | -122.33 |
| 33.2 | 1982-07-18 | 3.7 | 13 | 40 | -122.61 |
| 42.5 | 1977-01-13 | 3.7 | 2 | 41.02 | -122.15 |
| 49.4 | 1970-04-23 | 3.7 | 10 | 40.23 | -121.38 |
| 40.0 | 1971-12-13 | 3.6 | 2 | 40.36 | -121.53 |
| 16.2 | 1976-09-01 | 3.5 | 5 | 40.64 | -122.21 |
| 29.5 | 1950-02-09 | 3.5 | N/A | 40.8 | -122.05 |
Historical Tornado Events
A total of 3 historical tornado events that had recorded magnitude of 2 or above found in or near Cottonwood Union Elementary School District.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 19.7 | 1980-05-09 | 2 | 40°08'N / 122°13'W | 0.10 Mile | 3 Yards | 0 | 0 | 25K | 0 | Tehama | |
| 35.4 | 1986-09-24 | 2 | 39°56'N / 122°03'W | 2.00 Miles | 100 Yards | 0 | 1 | 2.5M | 0 | Tehama | |
| 46.1 | 1953-05-19 | 2 | 39°45'N / 122°11'W | 2.00 Miles | 33 Yards | 0 | 0 | 3K | 0 | Glenn |
* 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.