Earthquake · Reviewed by USGS

M1.1 earthquake 7 km ENE of Hebgen Lake Estates, Montana

A magnitude 1.1 earthquake struck 7 km ENE of Hebgen Lake Estates, Montana at Sep 30, 2026, 08:58 UTC, at a depth of 8 km. The epicentre was 99 km (62 mi) S of Bozeman.

Details

Magnitude	1.1 ml
Time	Sep 30, 2026, 08:58 UTC
Depth	8.3 km
Coordinates	44.789, -111.105
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	45 km / 28 mi	depth 7 km	Oct 25, 04:49 UTC
1.5	35 km S of Silver Gate, Montana	86 km / 54 mi	depth 12 km	Oct 22, 17:16 UTC
1.4	68 km ESE of West Yellowstone, Montana	77 km / 48 mi	depth 12 km	Oct 21, 15:59 UTC
1.0	8 km SE of Big Sky, Montana	51 km / 32 mi	depth 13 km	Oct 21, 10:23 UTC
1.1	46 km NW of Island Park, Idaho	56 km / 35 mi	depth 6 km	Oct 20, 10:12 UTC
1.1	35 km ESE of West Yellowstone, Montana	41 km / 26 mi	depth 6 km	Oct 19, 14:36 UTC
1.0	30 km ESE of West Yellowstone, Montana	37 km / 23 mi	depth 8 km	Oct 19, 03:48 UTC
1.9	35 km S of Silver Gate, Montana	85 km / 53 mi	depth 14 km	Oct 18, 21:25 UTC
1.1	4 km ESE of Hebgen Lake Estates, Montana	5 km / 3 mi	depth 12 km	Oct 17, 15:48 UTC
1.6	34 km E of West Yellowstone, Montana	38 km / 23 mi	depth 10 km	Oct 16, 16:52 UTC
1.1	35 km E of West Yellowstone, Montana	39 km / 24 mi	depth 5 km	Oct 16, 16:52 UTC
1.2	29 km SSW of Silver Gate, Montana	73 km / 45 mi	depth 6 km	Oct 15, 15:53 UTC
1.1	29 km SSW of Silver Gate, Montana	73 km / 45 mi	depth 6 km	Oct 15, 15:52 UTC
1.5	53 km SE of West Yellowstone, Montana	63 km / 39 mi	depth 2 km	Oct 15, 10:02 UTC
1.2	5 km SSE of Bozeman, Montana	94 km / 59 mi	depth 4 km	Oct 14, 10:03 UTC
1.2	51 km NE of Alta, Wyoming	88 km / 55 mi	depth 9 km	Oct 14, 04:05 UTC
1.8	46 km ESE of West Yellowstone, Montana	55 km / 34 mi	depth 3 km	Oct 14, 02:22 UTC
1.3	51 km NE of Alta, Wyoming	86 km / 54 mi	depth 9 km	Oct 13, 12:57 UTC
1.8	40 km SSW of Silver Gate, Montana	77 km / 48 mi	depth 5 km	Oct 12, 01:15 UTC
1.2	47 km SE of Mammoth, Wyoming	62 km / 39 mi	depth 4 km	Oct 10, 10:38 UTC
1.1	45 km ESE of West Yellowstone, Montana	52 km / 32 mi	depth 5 km	Oct 9, 08:55 UTC
1.4	28 km S of Ennis, Montana	58 km / 36 mi	depth -2 km	Oct 8, 19:18 UTC
1.0	4 km SSE of West Yellowstone, Montana	19 km / 12 mi	depth 13 km	Oct 7, 12:12 UTC
1.0	8 km NE of West Yellowstone, Montana	12 km / 7 mi	depth 11 km	Oct 4, 23:49 UTC
1.9	58 km E of Warm River, Idaho	76 km / 47 mi	depth 12 km	Oct 4, 23:32 UTC

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