Earthquake · Reviewed by USGS

M2.5 earthquake 15 km S of Hamilton City, CA

A magnitude 2.5 earthquake struck 15 km S of Hamilton City, CA at Aug 4, 2026, 20:54 UTC, at a depth of 29 km. The epicentre was 21 km (13 mi) SW of Chico.

Details

Magnitude	2.5 md
Time	Aug 4, 2026, 20:54 UTC
Depth	28.5 km
Coordinates	39.605, -122.020
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
1.8	17 km ESE of Lake Pillsbury, CA	73 km / 45 mi	depth 9 km	Oct 25, 05:03 UTC
2.3	17 km SE of Lake Pillsbury, CA	74 km / 46 mi	depth 7 km	Oct 25, 00:13 UTC
1.9	8 km N of Lake Pillsbury, CA	81 km / 50 mi	depth 10 km	Oct 17, 21:50 UTC
2.0	14 km ESE of Anderson, CA	89 km / 55 mi	depth 16 km	Oct 16, 13:53 UTC
1.6	10 km NNE of Upper Lake, CA	82 km / 51 mi	depth 8 km	Oct 15, 00:44 UTC
1.5	9 km SSE of Lake Pillsbury, CA	81 km / 50 mi	depth 7 km	Oct 13, 20:01 UTC
2.3	9 km N of Belden, CA	83 km / 52 mi	depth 10 km	Oct 13, 13:11 UTC
1.5	7 km SW of Upper Lake, CA	98 km / 61 mi	depth 4 km	Oct 12, 03:26 UTC
2.1	15 km ESE of Anderson, CA	88 km / 55 mi	depth 15 km	Oct 9, 04:50 UTC
1.7	9 km N of Lake Pillsbury, CA	81 km / 50 mi	depth 10 km	Oct 8, 14:16 UTC
1.7	2 km NNW of Lake Pillsbury, CA	84 km / 52 mi	depth 9 km	Oct 8, 14:06 UTC
1.5	2 km NNW of Lake Pillsbury, CA	83 km / 52 mi	depth 9 km	Oct 7, 07:44 UTC
1.9	11 km WSW of Manton, CA	86 km / 54 mi	depth 10 km	Oct 6, 07:28 UTC
1.8	7 km NW of North Lakeport, CA	98 km / 61 mi	depth 4 km	Oct 5, 01:26 UTC
1.7	12 km WSW of Almanor, CA	88 km / 55 mi	depth 6 km	Oct 4, 02:01 UTC
1.4	15 km W of Arbuckle, CA	70 km / 44 mi	depth 8 km	Oct 3, 23:03 UTC
2.2	15 km S of Hamilton City, CA	1 km / 1 mi	depth 24 km	Oct 2, 19:00 UTC
1.7	17 km NE of Nice, CA	73 km / 46 mi	depth -1 km	Oct 1, 22:11 UTC
2.2	15 km S of Hamilton City, CA	1 km / 0 mi	depth 22 km	Sep 30, 19:47 UTC
2.6	22 km ENE of Red Bluff, CA	71 km / 44 mi	depth 16 km	Sep 19, 19:52 UTC
2.7	5 km W of Hamilton City, CA	16 km / 10 mi	depth 26 km	Sep 2, 08:18 UTC
2.6	10 km N of Lake Pillsbury, CA	81 km / 50 mi	depth 12 km	Aug 23, 09:37 UTC
2.5	9 km E of Rancho Tehama Reserve, CA	50 km / 31 mi	depth 37 km	Aug 11, 04:57 UTC
2.7	4 km SSE of Anderson, CA	93 km / 58 mi	depth 17 km	Aug 6, 02:24 UTC

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