California earthquakes

M2.3 earthquake 2 km SE of Pacifica, CA

A magnitude 2.3 earthquake struck 2 km SE of Pacifica, CA on Mon, Sep 21, 2026, 8:24 PM PDT (03:24 UTC), 9 km (5 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M3.3 27 km WSW of Westley, CA. This one was a foreshock.

Pacifica forecast More in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 2.3 (Md, duration), micro
Magnitude from: Northern California Seismic System
Local time: Mon, Sep 21, 2026, 8:24 PM PDT
UTC: 2026-09-22 03:24:38 UTC
Depth: 8.6 km (5.4 mi), shallow
Epicenter: 37.600° N, 122.467° W
Region: California
Felt reports: 54
Tsunami flag: No
Status: Automatic solution, may be revised

Did you feel it?

54 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking. If you felt it, tell the USGS: every report sharpens the shaking map.

How well it is located

An automatic solution; a seismologist may revise it.

Location uncertainty: About 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 79°
Stations used: 62

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 19 since this one and 41 in the 30 days before it.

After

Before

Earthquakes today California earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc75439827. Read Fri, Oct 2, 2026, 10:56 PM UTC.