Earthquake · Reviewed by USGS

M1.2 earthquake 7 km SSE of Portola Valley, CA

A magnitude 1.2 earthquake struck 7 km SSE of Portola Valley, CA at Oct 15, 2026, 17:29 UTC, at a depth of 8 km. The epicentre was 11 km (7 mi) SW of Los Altos.

Details

Magnitude	1.2 md
Time	Oct 15, 2026, 17:29 UTC
Depth	8.2 km
Coordinates	37.327, -122.210
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
2.0	7 km ENE of Vallejo, CA	89 km / 56 mi	depth 4 km	Oct 26, 19:05 UTC
2.5	4 km SE of Aromas, CA	74 km / 46 mi	depth 5 km	Oct 26, 13:10 UTC
1.3	11 km E of Gilroy, CA	77 km / 48 mi	depth 7 km	Oct 26, 07:22 UTC
1.0	6 km E of Oakland, CA	51 km / 32 mi	depth 3 km	Oct 26, 06:49 UTC
1.3	5 km SSW of Pittsburg, CA	78 km / 49 mi	depth 15 km	Oct 26, 04:46 UTC
1.3	5 km N of Hollister, CA	86 km / 54 mi	depth 11 km	Oct 25, 05:25 UTC
1.7	4 km SSW of Muir Beach, CA	66 km / 41 mi	depth 6 km	Oct 25, 03:09 UTC
1.5	2 km WSW of Campbell, CA	21 km / 13 mi	depth 4 km	Oct 24, 06:10 UTC
1.7	19 km WSW of Gustine, CA	92 km / 57 mi	depth 2 km	Oct 23, 05:34 UTC
1.5	5 km NNW of Pacifica, CA	45 km / 28 mi	depth 7 km	Oct 22, 21:09 UTC
1.0	15 km SE of Livermore, CA	55 km / 34 mi	depth 9 km	Oct 22, 19:45 UTC
2.4	2 km E of Aromas, CA	71 km / 44 mi	depth 0 km	Oct 22, 19:04 UTC
1.3	10 km SSW of Ridgemark, CA	97 km / 60 mi	depth 7 km	Oct 22, 17:38 UTC
3.1	23 km WSW of Gustine, CA	89 km / 55 mi	depth -1 km	Oct 22, 04:18 UTC
1.6	10 km ENE of Blackhawk, CA	68 km / 42 mi	depth 7 km	Oct 21, 18:18 UTC
1.3	8 km ENE of Alum Rock, CA	42 km / 26 mi	depth 1 km	Oct 21, 16:48 UTC
2.0	14 km NE of Hollister, CA	94 km / 58 mi	depth 7 km	Oct 20, 16:47 UTC
2.4	4 km SE of San Ramon, CA	53 km / 33 mi	depth 7 km	Oct 19, 23:29 UTC
1.7	1 km SW of San Ramon, CA	54 km / 33 mi	depth 9 km	Oct 19, 02:35 UTC
2.4	2 km SSW of San Ramon, CA	53 km / 33 mi	depth 7 km	Oct 19, 02:15 UTC
1.6	1 km WSW of San Ramon, CA	53 km / 33 mi	depth 8 km	Oct 19, 02:08 UTC
1.4	2 km W of San Ramon, CA	54 km / 33 mi	depth 6 km	Oct 19, 01:46 UTC
1.1	2 km SSW of San Ramon, CA	53 km / 33 mi	depth 6 km	Oct 19, 01:17 UTC
1.8	1 km SW of San Ramon, CA	53 km / 33 mi	depth 7 km	Oct 19, 00:24 UTC
2.4	4 km NNW of Hollister, CA	86 km / 54 mi	depth 9 km	Oct 18, 22:27 UTC

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