111 km SE of Perryville, Alaska

Yes. A magnitude 3.0 earthquake was recorded 111 km SE of Perryville, Alaska at 09:02 UTC on 2022-10-23, 43 km deep.

2022-10-23 09:02 UTC · 43 km deep · released about 950 lb of TNT

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: 2022-10-23 09:02 UTC
Magnitude: M 3.0 (ml)
Depth: 43 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 1410 days ago · we first saw it 1410 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

Northridge, California 1994 M 6.7 350,000× the energy of this one
Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
Magna, Utah 2020 M 5.7 11,000× the energy of this one
This earthquake M 3.0 about 950 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

The largest earthquake within 50 km since 2016 was M 8.2 on 2021-07-29 — about 63,000,000 times the energy of this one.

Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:

8.2 1938 Semidi Islands, Alaska Earthquake · 18 km W of this epicentre Nov 10, 1938
6.9 105 km ESE of Perryville, Alaska · 25 km NNE of this epicentre Nov 17, 1938
6.2 143 km SE of Perryville, Alaska · 35 km SSE of this epicentre Mar 25, 1927
6.2 74 km SE of Perryville, Alaska · 38 km WNW of this epicentre Aug 6, 1927
6.0 98 km ESE of Perryville, Alaska · 26 km N of this epicentre Jan 2, 1985

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

Aftershocks so far

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

2.5 151 km SE of Perryville, Alaska 09:37 UTC
2.1 112 km SSE of Perryville, Alaska 22:12 UTC
3.1 76 km ESE of Perryville, Alaska 21:36 UTC
2.6 118 km SE of Perryville, Alaska 07:03 UTC
2.8 Alaska Peninsula 13:51 UTC
2.9 67 km SE of Perryville, Alaska 10:30 UTC
2.5 112 km SE of Perryville, Alaska 17:59 UTC
1.9 62 km SE of Perryville, Alaska 18:20 UTC
2.0 147 km SSE of Perryville, Alaska 17:28 UTC
3.6 134 km SE of Perryville, Alaska 23:40 UTC
1.8 Alaska Peninsula 19:33 UTC
3.3 138 km SE of Perryville, Alaska 13:40 UTC
2.6 149 km SE of Perryville, Alaska 06:46 UTC
3.3 141 km SE of Perryville, Alaska 06:35 UTC
2.4 75 km SE of Perryville, Alaska 12:13 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 12:06 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.