Oregon earthquakes

M2.8 earthquake 93km WSW of Brookings, OR

A magnitude 2.8 earthquake struck 93km WSW of Brookings, OR on Sat, Oct 30, 2021, 6:49 PM PDT (01:49 UTC), 24 km (15 mi) below the surface.

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

Brookings forecast More in Oregon

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 2.8 (ML, local (Richter)), micro
Magnitude from: Northern California Seismic System
Local time: Sat, Oct 30, 2021, 6:49 PM PDT
UTC: 2021-10-31 01:49:51 UTC
Depth: 24.5 km (15.2 mi), shallow
Epicenter: 41.882° N, 125.388° W
Region: Oregon
Felt reports: 1
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
2.82	ML, local (Richter)	Northern California Seismic System	Preferred · Final · ±0.123 · 15 stations
2.6	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.046 · 63 stations

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 1.4 km horizontally, 31.6 km in depth
Magnitude uncertainty: ±0.12
Depth from: Operator assigned
Station coverage gap: 246°, poorly surrounded by stations
Stations used: 29

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 3 in the 30 days before it.

After

Before

Earthquakes today Oregon earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73646805 (also filed as us7000fq79, uw61785257). Read Sun, Oct 4, 2026, 6:40 PM UTC.