131 km SSW of Atka, Alaska

Yes. A magnitude 2.6 earthquake was recorded 131 km SSW of Atka, Alaska at 05:53 UTC on 2020-02-11, 14 km deep.

2020-02-11 05:53 UTC · 14 km deep · released about 240 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: 2020-02-11 05:53 UTC
Magnitude: M 2.6 (ml)
Depth: 14 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 2394 days ago · we first saw it 2394 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, people at rest would likely notice it out to about 19 km (12 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 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 6.3 on 2019-11-24 — about 350,000 times the energy of this one.

Before 2016, the USGS record lists 111 earthquakes of M5 or more within 50 km; the five largest:

8.0 1986 Atka, Alaska Earthquake · 46 km NNE of this epicentre May 7, 1986
7.0 153 km SE of Adak, Alaska · 33 km SSW of this epicentre Jan 17, 1903
7.0 101 km SW of Atka, Alaska · 48 km NNW of this epicentre Aug 30, 2013
6.9 100 km ESE of Adak, Alaska · 49 km NNW of this epicentre Oct 13, 1926
6.8 99 km SW of Atka, Alaska · 44 km NNW of this epicentre Mar 19, 1957

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.

1.7 97 km SE of Adak, Alaska 19:34 UTC
1.8 114 km SW of Atka, Alaska 02:44 UTC
2.6 107 km SE of Adak, Alaska 00:19 UTC
3.3 105 km SE of Adak, Alaska 15:37 UTC
1.6 95 km SE of Adak, Alaska 01:47 UTC
3.0 121 km SSW of Atka, Alaska 22:00 UTC
2.7 131 km SSW of Atka, Alaska 08:24 UTC
2.9 129 km SSW of Atka, Alaska 06:51 UTC
2.7 130 km SSW of Atka, Alaska 05:06 UTC
3.4 123 km SSW of Atka, Alaska 20:33 UTC
3.7 106 km SSW of Atka, Alaska 19:49 UTC
1.6 87 km SSW of Atka, Alaska 02:45 UTC
2.6 87 km SSW of Atka, Alaska 18:57 UTC
4.8 117 km SSW of Atka, Alaska 07:11 UTC
2.9 109 km SW of Atka, Alaska 05:58 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 10:49 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.