Earthquake near Brookings, OR

USGS: 17 km SW of Pistol River, Oregon

3:30 am PDT, Mar 28, 2021 · 2021-03-28 10:30 UTC · 17 km deep · released about 64 lb of TNT

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Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.

When: 3:30 am PDT on 28 March 2021 (2021-03-28 10:30 UTC)
Where: 24 km (15 mi) WNW of Brookings, OR · earthquakes near Brookings
Magnitude: M 2.2 (ml)
Depth: 17 km below the surface
Felt: no reports yet
Nearest: Curry County, 43 km NE
Nearest mapped fault: Cascadia fold and fault belt, 24 km from its surface trace — near is not the same as on
Status: Reviewed by a seismologist

USGS · last changed by USGS 2014 days ago · we first saw it 2014 days ago

A magnitude 2.2 earthquake was recorded 24 km (15 mi) WNW of Brookings, OR, at 3:30 am PDT on 28 March 2021 (10:30 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Harbor, Gold Beach.

How big was it?

This earthquake released about 64 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 230,000× the energy of this one
Magna, Utah 2020 M 5.7 170,000× the energy of this one
Around the size people start to feel M 3.0 15× the energy of this one
This earthquake M 2.2 about 64 lb of TNT

Energy from the Gutenberg–Richter relation (log₁₀E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Map loads when it scrolls into view

Epicentre 42.1593, -124.5358. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction from the epicentre
Curry County, OR	43 km (27 mi)	NE	earthquakes near Curry County
Del Norte County, CA	65 km (40 mi)	SE	earthquakes near Del Norte County
Josephine County, OR	83 km (52 mi)	ENE	earthquakes near Josephine County
Coos County, OR	120 km (74 mi)	NNE	earthquakes near Coos County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

60 earthquakes have been recorded within 50 km since this one.

1.8 58 km WSW of Pistol River, Oregon 14:56 UTC
1.5 6 km SE of Gold Beach, Oregon 23:32 UTC
1.6 14 km NW of Nesika Beach, Oregon 01:28 UTC
1.6 15 km SW of Pistol River, Oregon 20:57 UTC
1.9 6 km S of Gold Beach, Oregon 18:38 UTC
1.8 47 km W of Gold Beach, Oregon 21:37 UTC
1.9 20 km W of Pistol River, Oregon 09:13 UTC
1.8 12 km SSW of Brookings, Oregon 23:37 UTC
1.9 12 km WSW of Smith River, California 14:52 UTC
1.7 9 km E of Pistol River, Oregon 09:13 UTC
3.0 6 km E of Pistol River, Oregon 12:12 UTC
2.8 6 km E of Pistol River, Oregon 07:13 UTC
2.9 9 km E of Pistol River, Oregon 15:48 UTC
2.6 18 km SSW of Brookings, OR 11:34 UTC
1.5 52 km WSW of Pistol River, Oregon 04:12 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 02:09 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

The official USGS event page — the source of record for every value above
Did you feel it? Report it to USGS — reports go to USGS, not to us
ShakeMap for this event, when USGS has produced one

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.