Earthquake · Reviewed by USGS

M3.3 earthquake 39 km SSE of Mammoth, Wyoming

A magnitude 3.3 earthquake struck 39 km SSE of Mammoth, Wyoming at Jul 16, 2026, 13:20 UTC, at a depth of 7 km. The epicentre was 121 km (75 mi) SSE of Bozeman. 28 people reported feeling it to USGS.

Details

Magnitude	3.3 ml
Time	Jul 16, 2026, 13:20 UTC
Depth	6.5 km
Coordinates	44.666, -110.468
Felt reports	28
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	14 km / 9 mi	depth 7 km	Oct 25, 04:49 UTC
1.5	35 km S of Silver Gate, Montana	36 km / 22 mi	depth 12 km	Oct 22, 17:16 UTC
1.4	68 km ESE of West Yellowstone, Montana	35 km / 22 mi	depth 12 km	Oct 21, 15:59 UTC
1.0	8 km SE of Big Sky, Montana	90 km / 56 mi	depth 13 km	Oct 21, 10:23 UTC
1.1	35 km ESE of West Yellowstone, Montana	19 km / 12 mi	depth 6 km	Oct 19, 14:36 UTC
1.0	30 km ESE of West Yellowstone, Montana	24 km / 15 mi	depth 8 km	Oct 19, 03:48 UTC
1.9	35 km S of Silver Gate, Montana	34 km / 21 mi	depth 14 km	Oct 18, 21:25 UTC
1.1	4 km ESE of Hebgen Lake Estates, Montana	54 km / 34 mi	depth 12 km	Oct 17, 15:48 UTC
1.6	34 km E of West Yellowstone, Montana	16 km / 10 mi	depth 10 km	Oct 16, 16:52 UTC
1.1	35 km E of West Yellowstone, Montana	16 km / 10 mi	depth 5 km	Oct 16, 16:52 UTC
1.2	29 km SSW of Silver Gate, Montana	26 km / 16 mi	depth 6 km	Oct 15, 15:53 UTC
1.1	29 km SSW of Silver Gate, Montana	26 km / 16 mi	depth 6 km	Oct 15, 15:52 UTC
1.5	53 km SE of West Yellowstone, Montana	34 km / 21 mi	depth 2 km	Oct 15, 10:02 UTC
1.2	51 km NE of Alta, Wyoming	65 km / 40 mi	depth 9 km	Oct 14, 04:05 UTC
1.8	46 km ESE of West Yellowstone, Montana	26 km / 16 mi	depth 3 km	Oct 14, 02:22 UTC
1.3	51 km NE of Alta, Wyoming	64 km / 40 mi	depth 9 km	Oct 13, 12:57 UTC
1.8	40 km SSW of Silver Gate, Montana	26 km / 16 mi	depth 5 km	Oct 12, 01:15 UTC
1.2	47 km SE of Mammoth, Wyoming	10 km / 6 mi	depth 4 km	Oct 10, 10:38 UTC
1.1	45 km ESE of West Yellowstone, Montana	20 km / 13 mi	depth 5 km	Oct 9, 08:55 UTC
1.0	4 km SSE of West Yellowstone, Montana	49 km / 31 mi	depth 13 km	Oct 7, 12:12 UTC
1.0	8 km NE of West Yellowstone, Montana	43 km / 27 mi	depth 11 km	Oct 4, 23:49 UTC
1.9	58 km E of Warm River, Idaho	52 km / 33 mi	depth 12 km	Oct 4, 23:32 UTC
1.4	8 km NE of West Yellowstone, Montana	44 km / 27 mi	depth 11 km	Oct 4, 22:02 UTC
1.1	7 km ENE of Hebgen Lake Estates, Montana	52 km / 32 mi	depth 8 km	Sep 30, 08:58 UTC
1.3	58 km E of Warm River, Idaho	53 km / 33 mi	depth 12 km	Sep 29, 07:42 UTC

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