California earthquakes

M1.8 earthquake 3 km E of Windsor, California

A magnitude 1.8 earthquake struck 3 km E of Windsor, California on Tue, May 7, 1974, 4:28 PM PDT (23:28 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M4.3 2 km SE of Larkfield-Wikiup, California. This one was a foreshock.

Windsor 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1974-05-07 23:28:59 UTC
Depth
4.1 km (2.5 mi), shallow
Epicenter
38.547° N, 122.771° 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 0.5 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
137°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 2.6Northern California · 19136 days ago · 7 km deep · 2 km away
  2. 2.4Northern California · 19135 days ago · 7 km deep · 3 km away
  3. 1.96 km WSW of Kenwood, California · 19125 days ago · 9 km deep · 23 km away
  4. 1.85 km NE of Santa Rosa, California · 19124 days ago · 6 km deep · 11 km away
  5. 2.06 km ENE of Rohnert Park, California · 19123 days ago · 1 km deep · 23 km away
  6. 1.75 km SSW of Green Valley, California · 19121 days ago · 10 km deep · 64 km away
  7. 2.24 km SW of Yountville, California · 19120 days ago · 8 km deep · 39 km away
  8. 2.56 km ENE of Rohnert Park, California · 19117 days ago · 3 km deep · 23 km away
  9. 2.45 km ENE of Santa Rosa, California · 19117 days ago · 11 km deep · 15 km away
  10. 2.36 km ENE of Santa Rosa, California · 19117 days ago · 11 km deep · 15 km away
  11. 1.93 km SW of Rutherford, California · 19115 days ago · 6 km deep · 31 km away
  12. 2.04 km NW of Noe Valley, California · 19113 days ago · 18 km deep · 89 km away
  13. 2.64 km NW of Noe Valley, California · 19112 days ago · 16 km deep · 90 km away
  14. 3.17 km NE of Rohnert Park, California · 19111 days ago · 4 km deep · 21 km away
  15. 2.77 km NE of Rohnert Park, California · 19111 days ago · 3 km deep · 20 km away
  16. 2.57 km NE of Rohnert Park, California · 19111 days ago · 4 km deep · 20 km away
  17. 2.56 km NE of Rohnert Park, California · 19111 days ago · 5 km deep · 21 km away
  18. 2.17 km NE of Rohnert Park, California · 19110 days ago · 2 km deep · 21 km away
  19. 4.32 km SE of Larkfield-Wikiup, California · 19107 days ago · 6 km deep · 6 km away
  20. 2.63 km E of Berkeley, California · 19103 days ago · 11 km deep · 88 km away
  21. 1.96 km ENE of Rohnert Park, California · 19091 days ago · 5 km deep · 24 km away
  22. 2.16 km ENE of Rohnert Park, California · 19091 days ago · 5 km deep · 24 km away
  23. 1.95 km SSW of Calistoga, California · 19086 days ago · 4 km deep · 14 km away
  24. 2.47 km NE of Rohnert Park, California · 19084 days ago · 3 km deep · 21 km away

Before

  1. 2.12 km E of Larkfield-Wikiup, California · 19141 days ago · 7 km deep · 6 km away
  2. 3.07 km WSW of Cobb, California · 19146 days ago · 3 km deep · 29 km away
  3. 2.5Northern California · 19150 days ago · 7 km deep · 25 km away
  4. 3.06 km ESE of Angwin, California · 19151 days ago · 7 km deep · 34 km away
  5. 2.26 km SSW of Yountville, California · 19151 days ago · 9 km deep · 39 km away
  6. 2.73 km SE of Hartley, California · 19155 days ago · 6 km deep · 76 km away
  7. 2.112 km NW of Moskowite Corner, California · 19155 days ago · 16 km deep · 42 km away
  8. 2.51 km W of Bay Point, California · 19156 days ago · 15 km deep · 90 km away
  9. 2.310 km N of Pittsburg, California · 19157 days ago · 21 km deep · 90 km away
  10. 2.010 km N of Pittsburg, California · 19157 days ago · 21 km deep · 90 km away
  11. 1.63 km NNE of Elmira, California · 19160 days ago · 7 km deep · 79 km away
  12. 3.98 km SSW of Cobb, California · 19170 days ago · 5 km deep · 23 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1019549. Read Fri, Oct 2, 2026, 11:54 AM UTC.