Earthquake · Reviewed by USGS

M2.1 earthquake 15 km ENE of Twin Bridges, Montana

A magnitude 2.1 earthquake struck 15 km ENE of Twin Bridges, Montana at Oct 16, 2026, 15:31 UTC, at a depth of 4 km. The epicentre was 53 km (33 mi) SE of Butte.

Details

Magnitude	2.1 ml
Time	Oct 16, 2026, 15:31 UTC
Depth	4.2 km
Coordinates	45.608, -112.152
Felt reports	0
Tsunami flag	None
Source	USGS event page

Fig. 1The epicentre and other earthquakes within 100 km, since the day before

01 — Nearby

Nearest cities

02 — Around it

Other earthquakes within 100 km

Other earthquakes within 100 km since the day before this event
Magnitude	Location	Distance	Depth	Time
2.4	20 km SW of Whitehall, Montana	19 km / 12 mi	depth 2 km	Oct 25, 09:27 UTC
1.1	6 km SSW of Toston, Montana	77 km / 48 mi	depth 2 km	Oct 22, 09:13 UTC
2.3	6 km SSW of Toston, Montana	78 km / 48 mi	depth 1 km	Oct 22, 09:11 UTC
1.7	7 km S of Toston, Montana	77 km / 48 mi	depth 5 km	Oct 22, 08:59 UTC
1.0	8 km SE of Big Sky, Montana	80 km / 49 mi	depth 13 km	Oct 21, 10:23 UTC
1.5	6 km E of Butte, Montana	50 km / 31 mi	depth -2 km	Oct 16, 19:01 UTC
1.6	15 km S of Whitehall, Montana	14 km / 9 mi	depth 4 km	Oct 16, 12:52 UTC
1.7	8 km W of Townsend, Montana	88 km / 55 mi	depth -2 km	Oct 15, 20:32 UTC
1.8	5 km E of Butte, Montana	51 km / 31 mi	depth -2 km	Oct 15, 19:15 UTC

USGS can revise magnitude and location after the first report. See magnitude vs intensity and aftershocks.