101 km ESE of Chignik, Alaska

Yes. A magnitude 2.6 earthquake was recorded 101 km ESE of Chignik, Alaska at 02:45 UTC on 2021-01-09, 23 km deep.

2021-01-09 02:45 UTC · 23 km deep · released about 240 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: 2021-01-09 02:45 UTC
Magnitude: M 2.6 (ml)
Depth: 23 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 2063 days ago · we first saw it 2063 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 6 km (4 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
Magna, Utah 2020 M 5.7 45,000× the energy of this one
Around the size people start to feel M 3.0 4× the energy of this one
This earthquake M 2.6 about 240 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 4.1 on 2018-06-16 — about 180 times the energy of this one.

Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:

7.0 113 km ESE of Chignik, Alaska · 24 km S of this epicentre May 4, 1923
6.9 143 km ESE of Chignik, Alaska · 44 km SE of this epicentre Feb 13, 1951
6.6 128 km SE of Chignik, Alaska · 48 km S of this epicentre Jul 28, 1934
6.4 77 km ESE of Chignik, Alaska · 24 km WNW of this epicentre Mar 24, 1972
6.3 112 km E of Chignik, Alaska · 20 km NE of this epicentre Feb 25, 1953

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

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

3.3 77 km ESE of Chignik, Alaska 23:50 UTC
1.9 144 km ESE of Chignik, Alaska 02:51 UTC
2.4 119 km ESE of Chignik, Alaska 21:55 UTC
2.1 south of Alaska 06:09 UTC
2.3 117 km E of Chignik, Alaska 18:59 UTC
2.7 135 km ESE of Chignik, Alaska 21:31 UTC
1.9 107 km E of Chignik, Alaska 05:38 UTC
2.0 129 km SE of Chignik, Alaska 03:10 UTC
2.5 134 km ESE of Chignik, Alaska 18:57 UTC
2.2 145 km ESE of Chignik, Alaska 08:12 UTC
2.4 113 km SE of Chignik, Alaska 05:40 UTC
2.8 78 km SE of Chignik, Alaska 06:56 UTC
2.6 125 km ESE of Chignik, Alaska 19:33 UTC
2.5 126 km SE of Chignik, Alaska 05:52 UTC
2.7 122 km E of Chignik, Alaska 08:05 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 00:59 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.