California earthquakes

M1.9 earthquake Central California

A magnitude 1.9 earthquake struck in Central California on Fri, Feb 25, 1983, 11:33 PM PST (07:33 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M2.7 11 km SE of Catheys Valley, California. This one was a foreshock.

Greeley Hill 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
1.9 (md), micro
Local time
UTC
1983-02-26 07:33:12 UTC
Depth
12.1 km (7.5 mi), shallow
Epicenter
37.648° N, 120.356° 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 2.6 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
211°, 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: 7 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.214 km WNW of Big Creek, California · 15912 days ago · 3 km deep · 96 km away
  2. 2.514 km N of Auberry, California · 15904 days ago · -1 km deep · 91 km away
  3. 2.517 km SE of Yosemite Valley, California · 15903 days ago · 3 km deep · 79 km away
  4. 2.35 km S of Buck Meadows, California · 15900 days ago · 19 km deep · 29 km away
  5. 2.711 km SE of Catheys Valley, California · 15885 days ago · 0 km deep · 44 km away
  6. 1.617 km SE of Yosemite Valley, California · 15883 days ago · 3 km deep · 80 km away
  7. 1.615 km W of Diablo Grande, California · 15880 days ago · 3 km deep · 100 km away

Before

  1. 1.810 km SSE of Tracy, California · 15928 days ago · 10 km deep · 89 km away
  2. 1.912 km SSE of Tracy, California · 15928 days ago · 8 km deep · 90 km away
  3. 2.88 km SSW of Bootjack, California · 15929 days ago · 8 km deep · 49 km away
  4. 2.72 km NE of El Portal, California · 15931 days ago · 46 km deep · 52 km away
  5. 2.720 km ESE of Yosemite Valley, California · 15931 days ago · 16 km deep · 86 km away
  6. 2.010 km W of Volta, California · 15934 days ago · 7 km deep · 87 km away
  7. 1.95 km WSW of Westley, California · 15936 days ago · 0 km deep · 81 km away
  8. 1.821 km E of Wawona, California · 15937 days ago · 3 km deep · 83 km away
  9. 3.013 km SSW of South Dos Palos, California · 15942 days ago · 4 km deep · 94 km away
  10. 1.818 km SE of Yosemite Valley, California · 15948 days ago · 3 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1088464. Read Thu, Oct 1, 2026, 12:31 AM UTC.