139 km SE of Akutan, Alaska

Yes. A magnitude 2.6 earthquake was recorded 139 km SE of Akutan, Alaska, at 10:28 pm AKST on 8 March 2019 (07:28 UTC), 35 km deep.

2019-03-09 07:28 UTC · 35 km deep · released about 240 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: 2019-03-09 07:28 UTC
Magnitude: M 2.6 (ml)
Depth: 35 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 2730 days ago · we first saw it 2730 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
Magna, Utah 2020 M 5.7 45,000× the energy of this one
Around the size people start to feel M 3.0 4× the energy of this one
This earthquake M 2.6 about 240 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 5,600 times the energy of this one.

Before 2016, the USGS record lists 14 earthquakes of M5 or more within 50 km; the five largest:

6.2 136 km SE of Akutan, Alaska · 34 km NE of this epicentre Apr 1, 1946
6.2 156 km SE of Akutan, Alaska · 23 km E of this epicentre Nov 12, 1946
6.1 136 km ESE of Akutan, Alaska · 45 km NE of this epicentre Apr 2, 1946
5.5 110 km ESE of Akutan, Alaska · 49 km N of this epicentre May 9, 2001
5.4 112 km SE of Akutan, Alaska · 29 km NNW of this epicentre Apr 4, 1993

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

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

2.0 102 km SE of Akutan, Alaska 18:26 UTC
2.0 107 km SE of Akutan, Alaska 00:51 UTC
2.0 148 km SE of Akutan, Alaska 00:45 UTC
2.8 95 km SE of Akutan, Alaska 16:25 UTC
2.7 129 km SE of Akutan, Alaska 05:43 UTC
2.6 122 km SE of Akutan, Alaska 21:48 UTC
3.2 177 km SE of Akutan, Alaska 07:04 UTC
2.7 98 km SE of Akutan, Alaska 10:46 UTC
2.7 94 km SE of Akutan, Alaska 10:35 UTC
2.8 111 km SE of Akutan, Alaska 01:25 UTC
2.7 111 km SE of Akutan, Alaska 21:43 UTC
3.7 106 km SE of Akutan, Alaska 16:21 UTC
3.3 135 km SSE of Akutan, Alaska 23:19 UTC
2.8 146 km SE of Akutan, Alaska 07:42 UTC
2.8 93 km SE of Akutan, Alaska 22:28 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 23:11 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.