The December 12, 1917 earthquake
M5.3Southeastern Idaho
A magnitude 5.3 earthquake, centred in Caribou County. The 12th strongest in Idaho’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.
The earthquake
- Magnitude
- 5.3
- as reported (uk)
- Depth
- —
- Not recorded
- Local time
- Wednesday, December 12, 1917
- 02:50 PST; 10:50 UTC
- In Idaho’s record
- 12th
- strongest of 3,958 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event ushis625 (“Southeastern Idaho”). The USGS event page carries the ShakeMap, felt reports and the official summary.
Counties and cities within 50 miles
Distance from the epicentre to each county boundary (zero when inside) and to each city centre.
Counties
- Caribou CountyID · inside
- Bonneville CountyID · 13.0 mi
- Bingham CountyID · 14.7 mi
- Teton CountyWY · 25.3 mi
- Lincoln CountyWY · 25.3 mi
- Bear Lake CountyID · 27.5 mi
- Teton CountyID · 36.9 mi
- Sublette CountyWY · 37.5 mi
- Bannock CountyID · 38.1 mi
- Franklin CountyID · 43.2 mi
- Madison CountyID · 43.3 mi
- Jefferson CountyID · 46.3 mi
Earthquakes around the epicentre
645 earthquakes of magnitude 3 or more within 50 miles of this epicentre since 1973.
No earlier earthquake of magnitude 5 or more within 50 miles in the catalogue since 1900.
USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.