M1.9 earthquake 3km SW of Cobb, CA
A magnitude 1.9 earthquake struck 3km SW of Cobb, CA on Thu, Apr 15, 2021, 2:50 PM PDT (21:50 UTC), 1 km (1 mi) below the surface.
A larger quake followed: M4.0 7km WNW of The Geysers, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.9 (Md, duration), micro
- Magnitude from
- Northern California Seismic System
- Local time
- UTC
- 2021-04-15 21:50:58 UTC
- Depth
- 1.5 km (0.9 mi), shallow
- Epicenter
- 38.803° N, 122.742° W
- Region
- California
- 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 0.2 km horizontally, 0.3 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 49°
- Stations used
- 44
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 87 in the 30 days before it.
After
- 1.69km ENE of Clearlake, CA · 1997 days ago · -1 km deep · 27 km away
- 1.76km NNW of The Geysers, CA · 1997 days ago · 3 km deep · 5 km away
- 1.63km NW of The Geysers, CA · 1997 days ago · 1 km deep · 3 km away
- 1.62km N of The Geysers, CA · 1997 days ago · 1 km deep · 2 km away
- 1.62km NW of The Geysers, CA · 1997 days ago · 2 km deep · 3 km away
- 2.72km W of Anderson Springs, CA · 1996 days ago · 2 km deep · 4 km away · felt by 7
- 2.03km W of Anderson Springs, CA · 1996 days ago · 2 km deep · 3 km away
- 2.020km SW of Arbuckle, CA · 1996 days ago · 12 km deep · 44 km away
- 1.610km WNW of The Geysers, CA · 1996 days ago · 3 km deep · 10 km away
- 1.610km WNW of The Geysers, CA · 1996 days ago · 3 km deep · 10 km away
- 1.98km NW of The Geysers, CA · 1996 days ago · 2 km deep · 7 km away
- 2.37km W of Cobb, CA · 1996 days ago · 2 km deep · 6 km away
- 1.77km W of Cobb, CA · 1995 days ago · 2 km deep · 6 km away
- 1.66km SSW of Calistoga, CA · 1995 days ago · 9 km deep · 33 km away
- 1.64km W of Cobb, CA · 1994 days ago · 2 km deep · 3 km away
- 1.97km NW of The Geysers, CA · 1994 days ago · 2 km deep · 7 km away · felt by 1
- 1.56km E of Redwood Valley, CA · 1994 days ago · 6 km deep · 61 km away
- 1.63km NNW of Angwin, CA · 1994 days ago · 0 km deep · 33 km away
- 1.78km ESE of Willits, CA · 1994 days ago · -1 km deep · 78 km away
- 2.87km NW of The Geysers, CA · 1994 days ago · 2 km deep · 6 km away · felt by 5
- 1.79km WNW of Cobb, CA · 1994 days ago · 2 km deep · 8 km away
- 2.04km WNW of Cobb, CA · 1993 days ago · 2 km deep · 4 km away · felt by 1
- 4.03km SW of Anderson Springs, CA · 1993 days ago · 3 km deep · 5 km away · felt by 780
- 2.33km WSW of Anderson Springs, CA · 1993 days ago · 1 km deep · 4 km away
- 1.73km SE of The Geysers, CA · 1993 days ago · 1 km deep · 5 km away
- 1.63km S of Anderson Springs, CA · 1993 days ago · 1 km deep · 7 km away
- 1.621km ENE of Hidden Valley Lake, CA · 1993 days ago · 19 km deep · 37 km away
- 1.816km SE of Lake Pillsbury, CA · 1993 days ago · 5 km deep · 58 km away
- 2.012km NNE of Brooktrails, CA · 1992 days ago · 9 km deep · 97 km away
- 1.66km SSW of Calistoga, CA · 1992 days ago · 6 km deep · 32 km away
- 1.87km W of Cobb, CA · 1992 days ago · 2 km deep · 7 km away
- 1.69km W of North Lakeport, CA · 1992 days ago · 0 km deep · 39 km away
- 2.37km W of Cobb, CA · 1992 days ago · 2 km deep · 7 km away
- 1.87km NW of The Geysers, CA · 1992 days ago · 2 km deep · 7 km away
- 1.83km SSE of The Geysers, CA · 1992 days ago · 1 km deep · 5 km away
- 1.69km WSW of Cloverdale, CA · 1991 days ago · 7 km deep · 32 km away
- 1.910km SSE of Elmira, CA · 1991 days ago · 23 km deep · 97 km away
- 2.16km NW of The Geysers, CA · 1990 days ago · 1 km deep · 6 km away
- 2.56km NW of The Geysers, CA · 1990 days ago · 1 km deep · 6 km away · felt by 2
- 2.42km NE of Anderson Springs, CA · 1990 days ago · 1 km deep · 6 km away
- 1.66km WNW of Cobb, CA · 1990 days ago · 2 km deep · 5 km away
- 1.64km W of Kenwood, CA · 1990 days ago · 7 km deep · 46 km away
- 2.81km W of Anderson Springs, CA · 1990 days ago · 3 km deep · 4 km away · felt by 6
- 3.915km NNW of Lake Pillsbury, CA · 1989 days ago · 7 km deep · 84 km away · felt by 14
- 1.87km NW of The Geysers, CA · 1989 days ago · 1 km deep · 6 km away
- 1.56km WNW of The Geysers, CA · 1989 days ago · 3 km deep · 6 km away
- 1.86km NNW of The Geysers, CA · 1989 days ago · 3 km deep · 5 km away
- 1.716km NE of Willits, CA · 1989 days ago · 6 km deep · 86 km away
- 2.63km WSW of Anderson Springs, CA · 1989 days ago · 2 km deep · 4 km away
- 1.61km W of Lake Pillsbury, CA · 1988 days ago · 2 km deep · 70 km away
- 1.78km NW of The Geysers, CA · 1988 days ago · 2 km deep · 7 km away
- 1.812km W of Lakeport, CA · 1988 days ago · 4 km deep · 37 km away
- 2.31km NNW of The Geysers, CA · 1987 days ago · 3 km deep · 2 km away · felt by 1
- 1.75km NNW of Lake Pillsbury, CA · 1987 days ago · 6 km deep · 74 km away
- 1.76km NW of The Geysers, CA · 1987 days ago · 3 km deep · 5 km away
- 3.12km SSW of Anderson Springs, CA · 1987 days ago · 0 km deep · 7 km away · felt by 18
- 1.66km NW of The Geysers, CA · 1986 days ago · 3 km deep · 6 km away
- 2.05km NNW of The Geysers, CA · 1985 days ago · 2 km deep · 4 km away
- 1.54km SW of Glen Ellen, CA · 1985 days ago · 5 km deep · 54 km away
- 1.87km WNW of The Geysers, CA · 1984 days ago · 3 km deep · 8 km away
The first 60 of 200.
Before
- 2.58km NW of The Geysers, CA · 1997 days ago · 2 km deep · 7 km away · felt by 3
- 2.06km NNW of The Geysers, CA · 1998 days ago · 3 km deep · 5 km away
- 1.86km WNW of The Geysers, CA · 1998 days ago · 3 km deep · 6 km away
- 1.97km NW of The Geysers, CA · 1999 days ago · 3 km deep · 7 km away
- 2.411km WNW of The Geysers, CA · 1999 days ago · 3 km deep · 11 km away
- 1.714km W of Lakeport, CA · 2000 days ago · 2 km deep · 38 km away
- 1.58km NNW of Redwood Valley, CA · 2000 days ago · 7 km deep · 73 km away
- 1.96km WNW of The Geysers, CA · 2000 days ago · 2 km deep · 7 km away · felt by 1
- 1.97km NW of The Geysers, CA · 2001 days ago · 2 km deep · 6 km away
- 1.88km NW of The Geysers, CA · 2001 days ago · 2 km deep · 7 km away
- 2.47km NW of The Geysers, CA · 2001 days ago · 2 km deep · 6 km away · felt by 5
- 1.97km NW of The Geysers, CA · 2001 days ago · 2 km deep · 7 km away
- 2.67km NW of The Geysers, CA · 2001 days ago · 2 km deep · 7 km away
- 2.07km W of Cobb, CA · 2001 days ago · 2 km deep · 7 km away · felt by 1
- 3.36km S of Calistoga, CA · 2002 days ago · 9 km deep · 34 km away · felt by 262
- 1.96km NW of The Geysers, CA · 2002 days ago · 3 km deep · 5 km away
- 1.95km WNW of The Geysers, CA · 2003 days ago · 3 km deep · 6 km away
- 1.512km N of Brooktrails, CA · 2004 days ago · 8 km deep · 100 km away
- 1.62km SW of Cobb, CA · 2004 days ago · 2 km deep · 1 km away
- 2.35km NW of The Geysers, CA · 2004 days ago · 3 km deep · 5 km away · felt by 2
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event nc73549915. Read Sat, Oct 3, 2026, 6:17 PM UTC.