California earthquakes

M2.9 earthquake 16km SW of Coronado, CA

A magnitude 2.9 earthquake struck 16km SW of Coronado, CA on Mon, Dec 25, 1978, 6:33 PM PST (02:33 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.6 26km SE of Campo, CA. This one was a foreshock.

Coronado 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
2.9 (Mh), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1978-12-26 02:33:33 UTC
Depth
6.1 km (3.8 mi), shallow
Epicenter
32.602° N, 117.318° 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 1.2 km horizontally, 1.5 km in depth
Magnitude uncertainty
±0.26
Depth from
From location
Station coverage gap
224°, poorly surrounded by stations
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.16km WSW of Aguanga, CA · 17448 days ago · 11 km deep · 98 km away
  2. 2.421km ESE of Primo Tapia, B.C., MX · 17447 days ago · 6 km deep · 76 km away
  3. 2.949km W of Rosarito, B.C., MX · 17446 days ago · 6 km deep · 42 km away
  4. 2.053km ESE of San Clemente Is. (SE tip), CA · 17443 days ago · 6 km deep · 50 km away
  5. 1.918km ESE of Julian, CA · 17434 days ago · 8 km deep · 95 km away
  6. 2.417km ESE of Julian, CA · 17433 days ago · 13 km deep · 94 km away
  7. 1.918km ESE of Julian, CA · 17433 days ago · 12 km deep · 95 km away
  8. 1.818km ESE of Julian, CA · 17433 days ago · 8 km deep · 96 km away
  9. 1.85km SSE of Lake Henshaw, CA · 17425 days ago · 5 km deep · 86 km away
  10. 2.347km WSW of Carlsbad, CA · 17421 days ago · 6 km deep · 59 km away
  11. 2.535km W of La Jolla, CA · 17420 days ago · 5 km deep · 39 km away
  12. 1.822km ENE of Pine Valley, CA · 17420 days ago · 6 km deep · 100 km away
  13. 1.938km WSW of Encinitas, CA · 17416 days ago · 6 km deep · 52 km away
  14. 2.23km SSE of Lake Henshaw, CA · 17414 days ago · 10 km deep · 86 km away
  15. 1.617km ESE of Julian, CA · 17411 days ago · 12 km deep · 95 km away
  16. 3.626km SE of Campo, CA · 17408 days ago · 10 km deep · 100 km away
  17. 2.522km ESE of Campo, CA · 17408 days ago · 1 km deep · 98 km away
  18. 2.122km ESE of Campo, CA · 17407 days ago · 1 km deep · 99 km away
  19. 1.514km E of Julian, CA · 17394 days ago · 15 km deep · 95 km away

Before

  1. 1.65km ESE of Palomar Observatory, CA · 17452 days ago · 17 km deep · 94 km away
  2. 1.922km NE of Pine Valley, CA · 17463 days ago · 6 km deep · 99 km away
  3. 2.240km WSW of Carlsbad, CA · 17475 days ago · 6 km deep · 60 km away
  4. 2.19km SW of Lake Henshaw, CA · 17476 days ago · 10 km deep · 79 km away
  5. 2.718km WSW of Primo Tapia, B.C., MX · 17479 days ago · 6 km deep · 56 km away
  6. 2.36km W of Lake Henshaw, CA · 17479 days ago · 13 km deep · 85 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3345017. Read Sun, Oct 4, 2026, 6:23 PM UTC.