M2.9 earthquake 186 km W of Ferndale, California
A magnitude 2.9 earthquake struck 186 km W of Ferndale, California on Thu, Apr 22, 2021, 5:22 PM PDT (00:22 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.3 265 km W of Ferndale, California. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.9 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-04-23 00:22:40 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 40.776° N, 126.451° 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 7.6 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- Operator assigned
- Station coverage gap
- 252°, poorly surrounded by stations
- 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: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 3.0203 km W of Ferndale, California · 1991 days ago · 16 km deep · 18 km away
- 2.8189 km W of Ferndale, California · 1991 days ago · 10 km deep · 6 km away
- 2.6186 km W of Ferndale, California · 1991 days ago · 10 km deep · 12 km away
- 3.0170 km W of Ferndale, California · 1984 days ago · 11 km deep · 44 km away
- 4.3265 km W of Ferndale, California · 1982 days ago · 10 km deep · 82 km away · felt by 1
- 2.9104km W of Trinidad, CA · 1973 days ago · 24 km deep · 99 km away · felt by 1
- 3.2135km W of Petrolia, CA · 1948 days ago · 23 km deep · 60 km away · felt by 1
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000e3ts. Read Sun, Oct 4, 2026, 11:00 PM UTC.