123 km ESE of Chignik, Alaska

Yes. A magnitude 3.2 earthquake was recorded 123 km ESE of Chignik, Alaska at 03:20 UTC on 2022-01-08, 22 km deep.

2022-01-08 03:20 UTC · 22 km deep · released about 1,900 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: 2022-01-08 03:20 UTC
Magnitude: M 3.2 (ml)
Depth: 22 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 1699 days ago · we first saw it 1699 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, people at rest would likely notice it out to about 41 km (25 mi) from the epicentre. 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 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

Northridge, California 1994 M 6.7 180,000× the energy of this one
Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
Magna, Utah 2020 M 5.7 5,600× the energy of this one
This earthquake M 3.2 about 1,900 lb of TNT
Around the size people start to feel M 3.0 this one released 2× more

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 6.9 on 2021-10-11 — about 350,000 times the energy of this one.

Before 2016, the USGS record lists 13 earthquakes of M5 or more within 50 km; the five largest:

7.0 113 km ESE of Chignik, Alaska · 12 km W of this epicentre May 4, 1923
6.9 143 km ESE of Chignik, Alaska · 20 km ESE of this epicentre Feb 13, 1951
6.9 171 km SW of Akhiok, Alaska · 48 km ESE of this epicentre Feb 6, 1964
6.6 128 km SE of Chignik, Alaska · 27 km SSW of this epicentre Jul 28, 1934
6.4 77 km ESE of Chignik, Alaska · 49 km NW of this epicentre Mar 24, 1972

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

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

4.4 114 km E of Chignik, Alaska 18:46 UTC
1.9 111 km E of Chignik, Alaska 14:17 UTC
2.6 115 km E of Chignik, Alaska 08:02 UTC
2.1 91 km ESE of Chignik, Alaska 16:55 UTC
2.4 111 km E of Chignik, Alaska 02:47 UTC
2.5 115 km E of Chignik, Alaska 01:40 UTC
2.4 116 km E of Chignik, Alaska 00:56 UTC
2.5 108 km E of Chignik, Alaska 08:29 UTC
2.2 119 km E of Chignik, Alaska 05:49 UTC
2.6 116 km E of Chignik, Alaska 23:56 UTC
2.0 124 km E of Chignik, Alaska 02:24 UTC
1.7 115 km E of Chignik, Alaska 09:58 UTC
2.2 121 km E of Chignik, Alaska 17:00 UTC
2.2 118 km E of Chignik, Alaska 12:48 UTC
1.9 117 km E of Chignik, Alaska 15:06 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 22:25 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.