107 km SSW of False Pass, Alaska

Yes. A magnitude 2.1 earthquake was recorded 107 km SSW of False Pass, Alaska at 08:59 UTC on 2022-01-09, 19 km deep.

2022-01-09 08:59 UTC · 19 km deep · released about 43 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: 2022-01-09 08:59 UTC
Magnitude: M 2.1 (ml)
Depth: 19 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 1743 days ago · we first saw it 1743 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 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
Magna, Utah 2020 M 5.7 250,000× the energy of this one
Around the size people start to feel M 3.0 22× the energy of this one
This earthquake M 2.1 about 43 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 5.1 on 2021-01-11 — about 32,000 times the energy of this one.

Before 2016, the USGS record lists 56 earthquakes of M5 or more within 50 km; the five largest:

6.6 146 km ESE of Akutan, Alaska · 43 km S of this epicentre Apr 1, 1946
6.5 79 km SW of False Pass, Alaska · 44 km NNW of this epicentre Nov 19, 1993
6.2 Unimak Island region, Alaska · 17 km SSW of this epicentre Oct 14, 1933
6.2 102 km SSW of False Pass, Alaska · 12 km NW of this epicentre Aug 20, 1939
6.2 136 km S of False Pass, Alaska · 32 km SSE of this epicentre Apr 2, 1946

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

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

1.9 116 km SSW of False Pass, Alaska 08:02 UTC
1.8 114 km ESE of Akutan, Alaska 04:02 UTC
2.0 134 km ESE of Akutan, Alaska 00:01 UTC
2.0 118 km ESE of Akutan, Alaska 20:26 UTC
2.1 68 km S of False Pass, Alaska 17:28 UTC
2.0 64 km SSW of False Pass, Alaska 13:10 UTC
1.5 96 km SSW of False Pass, Alaska 12:39 UTC
2.9 97 km ESE of Akutan, Alaska 19:07 UTC
1.9 93 km S of False Pass, Alaska 15:46 UTC
2.1 112 km ESE of Akutan, Alaska 09:39 UTC
1.9 131 km ESE of Akutan, Alaska 09:17 UTC
2.2 117 km S of False Pass, Alaska 06:01 UTC
2.3 132 km ESE of Akutan, Alaska 02:19 UTC
1.9 128 km ESE of Akutan, Alaska 23:20 UTC
2.3 127 km ESE of Akutan, Alaska 18:53 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 21:56 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.