148 km SE of Akutan, Alaska

Yes. A magnitude 2.3 earthquake was recorded 148 km SE of Akutan, Alaska, at 3:07 pm AKDT on 26 April 2024 (23:07 UTC), 23 km deep.

2024-04-26 23:07 UTC · 23 km deep · released about 85 lb of TNT

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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: 2024-04-26 23:07 UTC
Magnitude: M 2.3 (ml)
Depth: 23 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 900 days ago · we first saw it 900 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 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
Magna, Utah 2020 M 5.7 130,000× the energy of this one
Around the size people start to feel M 3.0 11× the energy of this one
This earthquake M 2.3 about 85 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 16,000 times the energy of this one.

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

6.2 136 km SE of Akutan, Alaska · 47 km NNE of this epicentre Apr 1, 1946
6.2 156 km SE of Akutan, Alaska · 29 km ENE of this epicentre Nov 12, 1946
5.4 112 km SE of Akutan, Alaska · 42 km N of this epicentre Apr 4, 1993
5.4 149 km SE of Akutan, Alaska · 6 km ENE of this epicentre Dec 1, 1998
5.2 121 km SE of Akutan, Alaska · 34 km N of this epicentre Dec 28, 2005

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

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Aftershocks so far

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

2.6 141 km SSE of Akutan, Alaska 18:26 UTC
3.0 134 km SE of Akutan, Alaska 18:12 UTC
2.8 128 km SE of Akutan, Alaska 11:51 UTC
3.1 135 km SE of Akutan, Alaska 06:09 UTC
3.6 139 km SE of Akutan, Alaska 13:25 UTC
2.5 135 km SE of Akutan, Alaska 19:24 UTC
2.8 179 km SE of Akutan, Alaska 12:56 UTC
2.6 186 km SSE of Akutan, Alaska 03:48 UTC
2.1 155 km SE of Akutan, Alaska 14:41 UTC
3.9 136 km SE of Akutan, Alaska 19:37 UTC
2.7 135 km SE of Akutan, Alaska 13:06 UTC
2.0 105 km SE of Akutan, Alaska 21:37 UTC
2.6 171 km SE of Akutan, Alaska 03:31 UTC
1.9 131 km SE of Akutan, Alaska 06:16 UTC
1.9 124 km SE of Akutan, Alaska 04:03 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 10:13 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.