Earthquake · Reviewed by USGS

M1.2 earthquake 47 km SE of Mammoth, Wyoming

A magnitude 1.2 earthquake struck 47 km SE of Mammoth, Wyoming at Oct 10, 2026, 10:38 UTC, at a depth of 4 km. The epicentre was 128 km (80 mi) SSE of Bozeman.

Details

Magnitude	1.2 md
Time	Oct 10, 2026, 10:38 UTC
Depth	4.3 km
Coordinates	44.632, -110.352
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
1.2	24 km SSE of Mammoth, Wyoming	22 km / 14 mi	depth 7 km	Oct 25, 04:49 UTC
1.5	35 km S of Silver Gate, Montana	27 km / 17 mi	depth 12 km	Oct 22, 17:16 UTC
1.4	68 km ESE of West Yellowstone, Montana	30 km / 18 mi	depth 12 km	Oct 21, 15:59 UTC
1.0	8 km SE of Big Sky, Montana	99 km / 62 mi	depth 13 km	Oct 21, 10:23 UTC
1.1	35 km ESE of West Yellowstone, Montana	26 km / 16 mi	depth 6 km	Oct 19, 14:36 UTC
1.0	30 km ESE of West Yellowstone, Montana	32 km / 20 mi	depth 8 km	Oct 19, 03:48 UTC
1.9	35 km S of Silver Gate, Montana	26 km / 16 mi	depth 14 km	Oct 18, 21:25 UTC
1.1	4 km ESE of Hebgen Lake Estates, Montana	64 km / 40 mi	depth 12 km	Oct 17, 15:48 UTC
1.6	34 km E of West Yellowstone, Montana	25 km / 16 mi	depth 10 km	Oct 16, 16:52 UTC
1.1	35 km E of West Yellowstone, Montana	25 km / 15 mi	depth 5 km	Oct 16, 16:52 UTC
1.2	29 km SSW of Silver Gate, Montana	21 km / 13 mi	depth 6 km	Oct 15, 15:53 UTC
1.1	29 km SSW of Silver Gate, Montana	21 km / 13 mi	depth 6 km	Oct 15, 15:52 UTC
1.5	53 km SE of West Yellowstone, Montana	33 km / 21 mi	depth 2 km	Oct 15, 10:02 UTC
1.2	51 km NE of Alta, Wyoming	63 km / 39 mi	depth 9 km	Oct 14, 04:05 UTC
1.8	46 km ESE of West Yellowstone, Montana	28 km / 17 mi	depth 3 km	Oct 14, 02:22 UTC
1.3	51 km NE of Alta, Wyoming	62 km / 39 mi	depth 9 km	Oct 13, 12:57 UTC
1.8	40 km SSW of Silver Gate, Montana	17 km / 10 mi	depth 5 km	Oct 12, 01:15 UTC
2.0	24 km NE of Kelly, Wyoming	98 km / 61 mi	depth 13 km	Oct 9, 11:36 UTC

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