88 km S of Unalaska, Alaska

Yes. A magnitude 2.7 earthquake was recorded 88 km S of Unalaska, Alaska, at 5:59 pm AKST on 3 March 2026 (02:59 UTC), 35 km deep.

2026-03-04 02:59 UTC · 35 km deep · released about 340 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: 2026-03-04 02:59 UTC
Magnitude: M 2.7 (ml)
Depth: 35 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 182 days ago · we first saw it 182 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 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 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
Magna, Utah 2020 M 5.7 32,000× the energy of this one
Around the size people start to feel M 3.0 2.8× the energy of this one
This earthquake M 2.7 about 340 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 6.2 on 2022-01-22 — about 180,000 times the energy of this one.

Before 2016, the USGS record lists 38 earthquakes of M5 or more within 50 km; the five largest:

6.8 68 km SSW of Unalaska, Alaska · 29 km NNW of this epicentre Mar 29, 1957
6.5 127 km E of Nikolski, Alaska · 42 km SSW of this epicentre Oct 13, 2009
6.4 118 km E of Nikolski, Alaska · 46 km SW of this epicentre Mar 15, 1957
6.2 130 km S of Unalaska, Alaska · 42 km SSW of this epicentre Jan 21, 1952
6.2 74 km SSW of Unalaska, Alaska · 23 km NW of this epicentre Oct 31, 1985

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

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

1.9 92 km SSW of Unalaska, Alaska 09:24 UTC
2.1 57 km SW of Unalaska, Alaska 04:34 UTC
2.4 136 km ESE of Nikolski, Alaska 13:58 UTC
2.1 90 km S of Unalaska, Alaska 05:36 UTC
1.8 91 km SSW of Unalaska, Alaska 00:18 UTC
2.5 58 km SSW of Unalaska, Alaska 06:30 UTC
2.3 56 km SW of Unalaska, Alaska 08:53 UTC
3.7 62 km SSW of Unalaska, Alaska 03:07 UTC
3.0 62 km SSW of Unalaska, Alaska 03:07 UTC
3.3 59 km SSW of Unalaska, Alaska 03:03 UTC
2.0 93 km SSW of Unalaska, Alaska 13:33 UTC
2.8 88 km SSW of Unalaska, Alaska 05:56 UTC
2.4 66 km SSW of Unalaska, Alaska 09:20 UTC
2.4 104 km SSW of Unalaska, Alaska 05:17 UTC
2.3 63 km SSW of Unalaska, Alaska 02:27 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 07:41 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.