California earthquakes

M2.7 earthquake 154 km WNW of Indianola, California

A magnitude 2.7 earthquake struck 154 km WNW of Indianola, California on Thu, Oct 28, 2021, 8:39 AM PDT (15:39 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.1 94km W of Trinidad, CA. This one was a foreshock.

Ferndale 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
2.7 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2021-10-28 15:39:54 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
41.053° N, 125.997° 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 4.2 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.05
Depth from
Operator assigned
Station coverage gap
267°, poorly surrounded by stations
Stations used
24

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 3.0111km W of Petrolia, CA · 1791 days ago · 19 km deep · 89 km away
  2. 2.8101km W of Petrolia, CA · 1778 days ago · 5 km deep · 85 km away
  3. 4.194km W of Trinidad, CA · 1772 days ago · 24 km deep · 62 km away · felt by 4
  4. 3.297km W of Trinidad, CA · 1772 days ago · 25 km deep · 59 km away
  5. 3.1182 km W of Ferndale, California · 1771 days ago · 10 km deep · 79 km away
  6. 3.1142km WSW of Gold Beach, OR · 1770 days ago · 10 km deep · 93 km away
  7. 2.9136km W of Brookings, OR · 1769 days ago · 10 km deep · 91 km away
  8. 3.0160 km W of Ferndale, California · 1765 days ago · 10 km deep · 37 km away · felt by 3
  9. 2.7100km W of Petrolia, CA · 1762 days ago · 10 km deep · 84 km away
  10. 4.0112km W of Petrolia, CA · 1762 days ago · 27 km deep · 81 km away · felt by 4
  11. 2.656km WNW of Ferndale, CA · 1748 days ago · 18 km deep · 99 km away
  12. 3.0102km WNW of Bayview, CA · 1747 days ago · 10 km deep · 53 km away

Before

  1. 3.2175 km W of Ferndale, California · 1812 days ago · 10 km deep · 37 km away
  2. 2.7156 km WSW of Crescent City, California · 1823 days ago · 10 km deep · 40 km away · felt by 2

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000fphn. Read Sun, Oct 4, 2026, 4:24 PM UTC.