125 km SE of Akutan, Alaska

Yes. A magnitude 1.8 earthquake was recorded 125 km SE of Akutan, Alaska, at 6:31 am AKDT on 26 April 2022 (14:31 UTC), 5.1 km deep.

2022-04-26 14:31 UTC · 5.1 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area

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: 2022-04-26 14:31 UTC
Magnitude: M 1.8 (ml)
Depth: 5.1 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 1610 days ago · we first saw it 1610 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 13 km (8 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
Magna, Utah 2020 M 5.7 710,000× the energy of this one
Around the size people start to feel M 3.0 63× the energy of this one
This earthquake M 1.8 about 15 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 2017-05-24 — about 89,000 times the energy of this one.

Before 2016, the USGS record lists 17 earthquakes of M5 or more within 50 km; the five largest:

6.6 92 km SE of Akutan, Alaska · 43 km N of this epicentre Feb 19, 2003
6.2 136 km SE of Akutan, Alaska · 39 km ENE of this epicentre Apr 1, 1946
6.2 156 km SE of Akutan, Alaska · 37 km ESE of this epicentre Nov 12, 1946
6.1 136 km ESE of Akutan, Alaska · 49 km NE of this epicentre Apr 2, 1946
6.1 111 km ESE of Akutan, Alaska · 46 km NNE of this epicentre May 2, 1947

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.

1.6 81 km SE of Akutan, Alaska 10:00 UTC
2.6 88 km SE of Akutan, Alaska 18:28 UTC
2.0 80 km SE of Akutan, Alaska 19:45 UTC
1.7 97 km SE of Akutan, Alaska 14:17 UTC
1.7 109 km SE of Akutan, Alaska 03:49 UTC
2.1 134 km SE of Akutan, Alaska 22:02 UTC
3.0 139 km SE of Akutan, Alaska 04:26 UTC
2.0 149 km SSE of Akutan, Alaska 22:48 UTC
2.7 130 km SE of Akutan, Alaska 19:40 UTC
2.0 137 km SE of Akutan, Alaska 23:28 UTC
1.7 83 km SSE of Akutan, Alaska 21:06 UTC
2.7 93 km SE of Akutan, Alaska 10:38 UTC
1.8 95 km SE of Akutan, Alaska 10:36 UTC
2.0 130 km SSE of Akutan, Alaska 15:31 UTC
1.8 107 km SE of Akutan, Alaska 07:08 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 02:42 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.