129 km E of Chignik, Alaska

Yes. A magnitude 2.2 earthquake was recorded 129 km E of Chignik, Alaska at 11:09 UTC on 2019-01-07, 58 km deep.

2019-01-07 11:09 UTC · 58 km deep · released about 60 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: 2019-01-07 11:09 UTC
Magnitude: M 2.2 (ml)
Depth: 58 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 2001 days ago · we first saw it 2001 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause 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 60 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 5.8 250,000× the energy of this one
Magna, Utah 2020 M 5.7 180,000× the energy of this one
Around the size people start to feel M 3.0 16× the energy of this one
This earthquake M 2.2 about 60 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 4.5 on 2017-03-28 — about 2,800 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 · 43 km SW of this epicentre May 4, 1923
6.9 143 km ESE of Chignik, Alaska · 39 km S of this epicentre Feb 13, 1951
6.8 117 km SSE of Ugashik, Alaska · 50 km N of this epicentre May 29, 2015
6.3 112 km E of Chignik, Alaska · 17 km WNW of this epicentre Feb 25, 1953
6.1 132 km E of Chignik, Alaska · 7 km NE of this epicentre Sep 13, 1911

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

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

3.8 121 km WSW of Akhiok, Alaska 05:01 UTC
2.0 128 km SSE of Ugashik, Alaska 23:21 UTC
2.4 119 km E of Chignik, Alaska 17:26 UTC
2.1 123 km E of Chignik, Alaska 21:41 UTC
2.0 107 km E of Chignik, Alaska 03:39 UTC
2.9 116 km ESE of Chignik, Alaska 16:17 UTC
2.2 114 km ESE of Chignik, Alaska 17:46 UTC
2.3 124 km E of Chignik, Alaska 16:05 UTC
2.1 118 km E of Chignik, Alaska 03:08 UTC
2.3 120 km SW of Akhiok, Alaska 05:12 UTC
3.3 114 km E of Chignik, Alaska 16:57 UTC
3.5 113 km E of Chignik, Alaska 01:40 UTC
3.2 138 km WSW of Akhiok, Alaska 18:30 UTC
2.6 133 km SW of Akhiok, Alaska 15:42 UTC
4.1 137 km ESE of Chignik, Alaska 03:29 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 23:37 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.