Earthquake · Reviewed by USGS

M4.5 earthquake 15 km SW of Westley, CA

A magnitude 4.5 earthquake struck 15 km SW of Westley, CA at Sep 19, 2023, 04:13 UTC, at a depth of 4 km. The epicentre was 15 km (9 mi) WSW of Patterson. 3,004 people reported feeling it to USGS.

Details

Magnitude	4.5 mw
Time	Sep 19, 2023, 04:13 UTC
Depth	3.5 km
Coordinates	37.438, -121.296
Felt reports	3004
Tsunami flag	Tsunami information issued. Follow official guidance.
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
1.3	11 km E of Gilroy, CA	51 km / 32 mi	depth 7 km	Oct 26, 07:22 UTC
1.0	6 km E of Oakland, CA	85 km / 53 mi	depth 3 km	Oct 26, 06:49 UTC
1.3	5 km SSW of Pittsburg, CA	82 km / 51 mi	depth 15 km	Oct 26, 04:46 UTC
1.6	29 km SW of South Dos Palos, CA	82 km / 51 mi	depth 4 km	Oct 25, 08:43 UTC
1.1	29 km SW of South Dos Palos, CA	82 km / 51 mi	depth 2 km	Oct 25, 07:06 UTC
1.3	5 km N of Hollister, CA	61 km / 38 mi	depth 11 km	Oct 25, 05:25 UTC
1.5	16 km NW of Pinnacles, CA	90 km / 56 mi	depth 6 km	Oct 24, 11:42 UTC
1.5	2 km WSW of Campbell, CA	63 km / 39 mi	depth 4 km	Oct 24, 06:10 UTC
1.7	19 km WSW of Gustine, CA	31 km / 19 mi	depth 2 km	Oct 23, 05:34 UTC
1.4	9 km NE of Tres Pinos, CA	66 km / 41 mi	depth 1 km	Oct 22, 23:09 UTC
3.0	15 km S of Tres Pinos, CA	87 km / 54 mi	depth 6 km	Oct 22, 21:58 UTC
1.0	15 km SE of Livermore, CA	36 km / 22 mi	depth 9 km	Oct 22, 19:45 UTC
2.4	2 km E of Aromas, CA	67 km / 42 mi	depth 0 km	Oct 22, 19:04 UTC
1.3	10 km SSW of Ridgemark, CA	79 km / 49 mi	depth 7 km	Oct 22, 17:38 UTC
1.8	10 km SSW of Tres Pinos, CA	81 km / 50 mi	depth 2 km	Oct 22, 05:44 UTC
3.1	23 km WSW of Gustine, CA	30 km / 19 mi	depth -1 km	Oct 22, 04:18 UTC
1.6	10 km ENE of Blackhawk, CA	63 km / 39 mi	depth 7 km	Oct 21, 18:18 UTC
1.3	8 km ENE of Alum Rock, CA	40 km / 25 mi	depth 1 km	Oct 21, 16:48 UTC
1.2	5 km SE of Tres Pinos, CA	75 km / 47 mi	depth 9 km	Oct 20, 23:14 UTC
2.0	14 km NE of Hollister, CA	56 km / 35 mi	depth 7 km	Oct 20, 16:47 UTC
2.4	4 km SE of San Ramon, CA	67 km / 42 mi	depth 7 km	Oct 19, 23:29 UTC
1.7	1 km SW of San Ramon, CA	71 km / 44 mi	depth 9 km	Oct 19, 02:35 UTC
2.4	2 km SSW of San Ramon, CA	71 km / 44 mi	depth 7 km	Oct 19, 02:15 UTC
1.6	1 km WSW of San Ramon, CA	72 km / 45 mi	depth 8 km	Oct 19, 02:08 UTC
1.4	2 km W of San Ramon, CA	72 km / 45 mi	depth 6 km	Oct 19, 01:46 UTC

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