155 km ESE of Cordova, Alaska

Yes. A magnitude 1.6 earthquake was recorded 155 km ESE of Cordova, Alaska at 22:58 UTC on 2026-04-29, 5.9 km deep. The magnitude and location are an automatic first estimate and may change.

2026-04-29 22:58 UTC · 5.9 km deep · released about 7.6 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: 2026-04-29 22:58 UTC
Magnitude: M 1.6 (ml)
Depth: 5.9 km below the surface
Felt: no reports yet
Nearest mapped fault: Pamplona fault, 8 km from its surface trace — near is not the same as on
Status: Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS 192 days ago · we first saw it 192 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 9 km (6 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
Around the size people start to feel M 3.0 130× the energy of this one
This earthquake M 1.6 about 7.6 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

6.7 163 km W of Yakutat, Alaska · 40 km ESE of this epicentre Apr 16, 1970
6.2 165 km SE of Cordova, Alaska · 45 km SSW of this epicentre Feb 24, 1970
6.1 171 km SE of Cordova, Alaska · 37 km S of this epicentre Sep 30, 1965
5.8 162 km WNW of Yakutat, Alaska · 39 km E of this epicentre Sep 19, 1933
5.8 160 km W of Yakutat, Alaska · 48 km SE of this epicentre Apr 11, 1970

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

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

1.6 123 km S of McCarthy, Alaska 22:26 UTC
2.7 119 km ESE of Cordova, Alaska 10:17 UTC
1.7 129 km ESE of Cordova, Alaska 14:23 UTC
1.1 123 km S of McCarthy, Alaska 20:08 UTC
1.5 133 km S of McCarthy, Alaska 14:32 UTC
2.1 134 km S of McCarthy, Alaska 19:42 UTC
1.6 123 km E of Cordova, Alaska 04:52 UTC
1.5 137 km ESE of Cordova, Alaska 23:03 UTC
1.3 134 km S of McCarthy, Alaska 21:28 UTC
1.9 127 km SSW of McCarthy, Alaska 07:38 UTC
1.5 124 km E of Cordova, Alaska 06:14 UTC
1.6 121 km S of McCarthy, Alaska 08:15 UTC
1.6 122 km S of McCarthy, Alaska 00:32 UTC
1.9 120 km S of McCarthy, Alaska 13:11 UTC
1.5 128 km S of McCarthy, Alaska 17:10 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 16:52 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.