California earthquakes

M2.8 earthquake 6km SSW of Grapevine, CA

A magnitude 2.8 earthquake struck 6km SSW of Grapevine, CA on Sun, Sep 21, 1941, 12:00 PM GMT-8 (20:00 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.8 20km NNW of Santa Cruz Is. (E end), CA. This one was a foreshock.

Frazier Park forecastMore in California

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
2.8 (ml), micro
Local time
UTC
1941-09-21 20:00:37 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
34.896° N, 118.946° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
360°, poorly surrounded by stations
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 2.72km NE of Frazier Park, CA · 31046 days ago · 6 km deep · 7 km away
  2. 2.73km SW of Lebec, CA · 31046 days ago · 6 km deep · 10 km away
  3. 3.820km NNW of Santa Cruz Is. (E end), CA · 31043 days ago · 6 km deep · 99 km away
  4. 2.916km S of Maricopa, CA · 31039 days ago · 6 km deep · 40 km away
  5. 2.90km N of Carpinteria, CA · 31031 days ago · 6 km deep · 76 km away
  6. 3.318km SSE of Santa Barbara, CA · 31018 days ago · 6 km deep · 95 km away
  7. 3.44km NNW of Lake Hughes, CA · 31006 days ago · 6 km deep · 49 km away
  8. 3.020km SSW of Carpinteria, CA · 30990 days ago · 6 km deep · 95 km away

Before

  1. 5.12km NNE of Frazier Park, CA · 31047 days ago · 6 km deep · 7 km away
  2. 3.018km S of Carpinteria, CA · 31052 days ago · 6 km deep · 91 km away
  3. 3.921km S of Santa Barbara, CA · 31054 days ago · 6 km deep · 99 km away
  4. 2.821km SSW of Carpinteria, CA · 31059 days ago · 6 km deep · 97 km away
  5. 4.411km S of Santa Barbara, CA · 31060 days ago · 18 km deep · 93 km away
  6. 2.918km SSW of Carpinteria, CA · 31072 days ago · 0 km deep · 93 km away
  7. 3.318km SSW of Carpinteria, CA · 31074 days ago · 12 km deep · 93 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3365755. Read Tue, Sep 22, 2026, 8:48 AM UTC.