M2.6 earthquake 165 km W of Ferndale, California
A magnitude 2.6 earthquake struck 165 km W of Ferndale, California on Mon, Aug 2, 2021, 12:56 AM PDT (07:56 UTC), 12 km (7 mi) below the surface.
A larger quake followed: M3.9 76km W of Petrolia, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.6 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-08-02 07:56:35 UTC
- Depth
- 11.9 km (7.4 mi), shallow
- Epicenter
- 40.418° N, 126.200° W
- Region
- California
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 2.6 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.045 · 66 stations |
| 2.77 | ML, local (Richter) | Northern California Seismic System | Final · ±0.146 · 6 stations |
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 8.5 km horizontally, 13.4 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 252°, poorly surrounded by stations
- Stations used
- 61
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 3.976km W of Petrolia, CA · 1886 days ago · 8 km deep · 87 km away · felt by 2
- 2.988km W of Petrolia, CA · 1880 days ago · 22 km deep · 75 km away
- 3.3108km W of Petrolia, CA · 1853 days ago · 10 km deep · 54 km away · felt by 4
- 2.873km W of Ferndale, CA · 1835 days ago · 7 km deep · 94 km away · felt by 3
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000f1f6 (also filed as nc73604246). Read Sun, Oct 4, 2026, 9:16 AM UTC.