Knappa School District 4 Natural Disasters and Weather Extremes
The chance of earthquake damage in Knappa School District 4 is lower than Oregon average and is much lower than the national average. The risk of tornado damage in Knappa School District 4 is about the same as Oregon average and is much lower than the national average.
Earthquake Index, #54
| Knappa School District 4 | 0.26 |
| Oregon | 0.62 |
| 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, #140
| Knappa School District 4 | 0.0060 |
| Oregon | 0.0291 |
| 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, #75
| Knappa School District 4 | 6.41 |
| Oregon | 8.38 |
| 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 133 other weather extremes events within 50 miles of Knappa School District 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: | 0 | Cold: | 0 | Dense Fog: | 0 | Drought: | 0 |
| Dust Storm: | 0 | Flood: | 43 | Hail: | 6 | Heat: | 0 | Heavy Snow: | 3 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 0 | Landslide: | 0 | Strong Wind: | 21 |
| Thunderstorm Winds: | 9 | Tropical Storm: | 0 | Wildfire: | 1 | Winter Storm: | 0 | Winter Weather: | 0 |
| Other: | 50 | ||||||||
Volcanos Nearby
A total of 4 volcanoes are found in or near Knappa School District 4.
| Distance (miles) | Name | Region | Latitude | Longitude | Elevation (foot) | Type | Status | Last Eruption |
| 67.4 | St. Helens | US-Washington, United States | 46.2 | -122.18 | 2549 | Stratovolcano | Historical | Last known eruption 1964 or later |
| 75.4 | West Crater | US-Washington, United States | 45.88 | -122.08 | 1329 | Volcanic field | Radiocarbon | Last known eruption B.C. (Holocene) |
| 86.7 | Indian Heaven | US-Washington, United States | 45.93 | -121.82 | 1513 | Shield volcano | Radiocarbon | Last known eruption B.C. (Holocene) |
| 99.0 | Rainier | US-Washington, United States | 46.87 | -121.758 | 4392 | Stratovolcano | Dendrochronology | Last known eruption 1800-1899 |
Historical Earthquake Events
A total of 2 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Knappa School District 4.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 34.8 | 1963-12-27 | 4.5 | N/A | 45.7 | -123.4 |
| 25.4 | 1984-06-04 | 3.7 | 53 | 46.21 | -123.06 |
Historical Tornado Events
A total of 1 historical tornado event that had recorded magnitude of 2 or above found in or near Knappa School District 4.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 48.4 | 1965-11-10 | 2 | 46°42'N / 122°54'W | 1.50 Miles | 23 Yards | 0 | 0 | 25K | 0 | Lewis |
* 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.