Jefferson County Natural Disasters and Weather Extremes
The chance of earthquake damage in Jefferson County is lower than Oregon average and is much lower than the national average. The risk of tornado damage in Jefferson County is about the same as Oregon average and is much lower than the national average.
Earthquake Index, #27
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, #3
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, #23
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 654 other weather extremes events within 50 miles of Jefferson County were recorded from 1950 to 2010. The following is a break down of these events:
|Dust Storm:||0||Flood:||66||Hail:||259||Heat:||0||Heavy Snow:||3|
|High Surf:||0||Hurricane:||0||Ice Storm:||0||Landslide:||0||Strong Wind:||7|
|Thunderstorm Winds:||101||Tropical Storm:||0||Wildfire:||25||Winter Storm:||0||Winter Weather:||0|
A total of 18 volcanoes are found in or near Jefferson County.
|Distance (miles)||Name||Region||Latitude||Longitude||Elevation (foot)||Type||Status||Last Eruption|
|30.5||Jefferson||US-Oregon, United States||44.692||-121.8||3199||Stratovolcano||Varve Count||Last known eruption A.D. 1-1499|
|32.8||Blue Lake Crater||US-Oregon, United States||44.42||-121.77||1230||Maar||Radiocarbon||Last known eruption B.C. (Holocene)|
|38.7||Washington||US-Oregon, United States||44.332||-121.837||2376||Shield volcano||Radiocarbon||Last known eruption A.D. 1-1499|
|40.8||Belknap||US-Oregon, United States||44.285||-121.841||2095||Shield volcano||Radiocarbon||Last known eruption A.D. 1-1499|
|41.0||Sand Mountain Field||US-Oregon, United States||44.38||-121.93||1664||Cinder cone||Radiocarbon||Last known eruption B.C. (Holocene)|
|43.7||North Sister Field||US-Oregon, United States||44.17||-121.77||3074||Complex volcano||Radiocarbon||Last known eruption A.D. 1-1499|
|47.4||South Sister||US-Oregon, United States||44.1||-121.77||3157||Complex volcano||Radiocarbon||Last known eruption B.C. (Holocene)|
|52.2||Bachelor||US-Oregon, United States||43.979||-121.688||2763||Stratovolcano||Tephrochronology||Last known eruption B.C. (Holocene)|
|56.2||Hood||US-Oregon, United States||45.374||-121.694||3426||Stratovolcano||Historical||Last known eruption 1800-1899|
|63.7||Newberry Volcano||US-Oregon, United States||43.722||-121.229||2434||Shield volcano||Radiocarbon||Last known eruption A.D. 1-1499|
|79.8||Devils Garden||US-Oregon, United States||43.512||-120.861||1698||Volcanic field||Holocene||Unknown|
|80.6||Davis Lake||US-Oregon, United States||43.57||-121.82||2163||Volcanic field||Radiocarbon||Last known eruption B.C. (Holocene)|
|83.7||Squaw Ridge Field||US-Oregon, United States||43.472||-120.754||1711||Volcanic field||Holocene||Unknown|
|92.2||Four Craters Lava Field||US-Oregon, United States||43.361||-120.669||1501||Volcanic field||Holocene||Unknown|
|94.0||Indian Heaven||US-Washington, United States||45.93||-121.82||1513||Shield volcano||Radiocarbon||Last known eruption B.C. (Holocene)|
|95.8||West Crater||US-Washington, United States||45.88||-122.08||1329||Volcanic field||Radiocarbon||Last known eruption B.C. (Holocene)|
|107.2||Cinnamon Butte||US-Oregon, United States||43.241||-122.108||1956||Cinder cone||Holocene||Unknown|
|108.9||Adams||US-Washington, United States||46.206||-121.49||3742||Stratovolcano||Tephrochronology||Last known eruption A.D. 1-1499|
Historical Earthquake Events
A total of 2 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Jefferson County.
|Distance (miles)||Date||Magnitude||Depth (km)||Latitude||Longitude|
Historical Tornado Events
No historical tornado events that had recorded magnitudes of 2 or above found in or near Jefferson County.
No historical earthquake events found in or near Jefferson County.
* 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.