California earthquakes

M3.0 earthquake 4km W of Lytle Creek, CA

A magnitude 3.0 earthquake struck 4km W of Lytle Creek, CA on Sat, Oct 21, 1944, 11:28 PM GMT-7 (06:28 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.5 13km SW of Seal Beach, CA. This one was a foreshock.

Lytle Creek forecastMore in California

Map

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

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The earthquake

Magnitude
3.0 (ml), minor
Local time
UTC
1944-10-22 06:28:13 UTC
Depth
8.0 km (5.0 mi), shallow
Epicenter
34.266° N, 117.546° 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.

Location uncertainty
About 3.1 km horizontally, 2.2 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
242°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 3.513km SW of Seal Beach, CA · 29919 days ago · 6 km deep · 91 km away
  2. 4.211km NNE of Cabazon, CA · 29914 days ago · 6 km deep · 78 km away
  3. 2.52km NNW of Highland, CA · 29913 days ago · 1 km deep · 33 km away
  4. 3.010km NE of Cabazon, CA · 29910 days ago · 6 km deep · 82 km away
  5. 2.72km SE of Lake Arrowhead, CA · 29904 days ago · 5 km deep · 34 km away
  6. 2.42km NNE of Bell Gardens, CA · 29897 days ago · 1 km deep · 63 km away
  7. 2.53km W of Riverside, CA · 29890 days ago · 0 km deep · 36 km away
  8. 2.88km SSW of Beaumont, CA · 29884 days ago · 15 km deep · 67 km away
  9. 2.61km SW of Bellflower, CA · 29871 days ago · 4 km deep · 69 km away
  10. 2.55km ESE of Carson, CA · 29870 days ago · 6 km deep · 80 km away
  11. 3.32km ESE of Placentia, CA · 29868 days ago · 6 km deep · 53 km away
  12. 2.68km SW of Marina del Rey, CA · 29861 days ago · 6 km deep · 97 km away

Before

  1. 2.910km S of Banning, CA · 29925 days ago · 6 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3362821. Read Tue, Sep 22, 2026, 10:26 PM UTC.