Idaho, United States

Earthquakes Near Boise

USGS recorded 3 earthquakes within 120 km of Boise in the last 30 days and 47 in the last year, counting everything of magnitude 1.0 and above. The strongest in that year measured M 3.3.

M 1.7 · 4 km N of Emmett, Idaho · 2026-09-22 16:00 UTC M 3.2 · 23 km NW of Stanley, Idaho · 2026-09-12 01:52 UTC M 3.3 · 23 km NW of Stanley, Idaho · 2026-09-06 15:35 UTC

Recent earthquakes within 120 km of Boise

Last 30 days, newest first as of 2026-09-23 05:14 UTC

Magnitude Location Depth When (UTC)
M 1.7 4 km N of Emmett, Idaho at the surface 2026-09-22 16:00 UTC
M 3.2 23 km NW of Stanley, Idaho 10.0 km deep 2026-09-12 01:52 UTC
M 3.3 23 km NW of Stanley, Idaho 10.0 km deep 2026-09-06 15:35 UTC

The largest on record within 120 km of Boise

Since 1900, when the instrumental record becomes usable. The largest is M 5.3 at Western Idaho on 1916-05-13: moderate: can damage poorly built structures.

Largest since 1900 USGS

Magnitude Location Date Depth
M 5.3 Western Idaho 1916-05-13 Not recorded
M 4.9 10 km N of Smiths Ferry, Idaho 2024-02-26 12.2 km deep
M 4.8 21 km WNW of Stanley, Idaho 2020-04-01 10.0 km deep
M 4.7 29 km NE of Lowman, Idaho 1947-09-25 Not recorded
M 4.6 27 km NW of Stanley, Idaho 2020-06-25 7.5 km deep
M 4.4 31 km NW of Stanley, Idaho 2020-05-14 12.8 km deep
M 4.4 23 km NW of Stanley, Idaho 2020-04-01 6.5 km deep
M 4.2 13 km WSW of Stanley, Idaho 2020-08-08 10.0 km deep
M 4.2 10 km NW of Stanley, Idaho 2020-06-14 7.6 km deep
M 4.2 19 km WNW of Cascade, Idaho 1977-11-27 5.0 km deep

How these numbers were counted

Counts include every earthquake of magnitude 1.0 and above that USGS located within 120 km of Boise. The search is a circle of 120 km around the centre of Boise, so everything listed is genuinely within that distance. Full method, including why counts from different places are not comparable.

Source: USGS Earthquake Hazards Program (FDSN event service). Retrieved 2026-09-23. Public domain.