California earthquakes

M2.8 earthquake 16km ESE of Anza, CA

A magnitude 2.8 earthquake struck 16km ESE of Anza, CA on Thu, Sep 22, 1949, 8:54 PM GMT-8 (04:54 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.8 10km SSW of Morongo Valley, CA. This one was a foreshock.

Anza 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
2.8 (ml), micro
Local time
UTC
1949-09-23 04:54:26 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
33.483° N, 116.523° 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 2.2 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
263°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 3.810km SSW of Morongo Valley, CA · 28123 days ago · 6 km deep · 55 km away
  2. 2.88km N of Cabazon, CA · 28112 days ago · 6 km deep · 61 km away
  3. 2.36km NNE of La Jolla, CA · 28111 days ago · 6 km deep · 94 km away
  4. 3.334km SE of Twentynine Palms, CA · 28110 days ago · 6 km deep · 80 km away
  5. 2.93km S of Desert Hot Springs, CA · 28106 days ago · 6 km deep · 51 km away
  6. 2.69km WSW of Anza, CA · 28104 days ago · 0 km deep · 23 km away
  7. 3.938km NW of Desert Center, CA · 28103 days ago · 6 km deep · 87 km away
  8. 4.011km SW of Borrego Springs, CA · 28103 days ago · 6 km deep · 33 km away
  9. 3.111km SSW of Borrego Springs, CA · 28103 days ago · 6 km deep · 37 km away
  10. 3.212km S of Borrego Springs, CA · 28102 days ago · 6 km deep · 39 km away
  11. 2.59km NE of Aguanga, CA · 28100 days ago · 6 km deep · 24 km away
  12. 3.46km NNW of Garnet, CA · 28099 days ago · 6 km deep · 52 km away
  13. 2.69km NNE of Aguanga, CA · 28097 days ago · 1 km deep · 30 km away
  14. 2.810km NNE of Aguanga, CA · 28095 days ago · 0 km deep · 27 km away
  15. 3.011km ESE of Anza, CA · 28090 days ago · 5 km deep · 5 km away
  16. 3.031km SE of Twentynine Palms, CA · 28088 days ago · 6 km deep · 84 km away
  17. 2.65km W of Desert Hot Springs, CA · 28088 days ago · 6 km deep · 54 km away
  18. 2.826km NE of Coachella, CA · 28087 days ago · 6 km deep · 65 km away
  19. 2.78km NNW of Morongo Valley, CA · 28085 days ago · 6 km deep · 70 km away
  20. 3.138km SE of Twentynine Palms, CA · 28084 days ago · 6 km deep · 85 km away
  21. 3.436km SE of Twentynine Palms, CA · 28084 days ago · 6 km deep · 86 km away
  22. 2.78km SSW of Ocotillo Wells, CA · 28077 days ago · 6 km deep · 55 km away
  23. 3.232km SE of Twentynine Palms, CA · 28072 days ago · 6 km deep · 85 km away

Before

  1. 3.15km ENE of Thermal, CA · 28133 days ago · 6 km deep · 45 km away
  2. 2.66km N of Cabazon, CA · 28141 days ago · 6 km deep · 59 km away
  3. 2.423km NNW of Borrego Springs, CA · 28150 days ago · 6 km deep · 7 km away
  4. 3.135km SE of Twentynine Palms, CA · 28152 days ago · 6 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3355526. Read Tue, Sep 22, 2026, 12:16 PM UTC.