64 km SSE of Ugashik, Alaska

Yes. A magnitude 2.0 earthquake was recorded 64 km SSE of Ugashik, Alaska at 12:57 UTC on 2025-09-30, 14 km deep. The magnitude and location are an automatic first estimate and may change.

2025-09-30 12:57 UTC · 14 km deep · released about 30 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: 2025-09-30 12:57 UTC
Magnitude: M 2.0 (ml)
Depth: 14 km below the surface
Felt: no reports yet
Status: Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS 409 days ago · we first saw it 409 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 8 km (5 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 30 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 500,000× the energy of this one
Magna, Utah 2020 M 5.7 350,000× the energy of this one
Around the size people start to feel M 3.0 32× the energy of this one
This earthquake M 2.0 about 30 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 4.6 on 2022-04-10 — about 7,900 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

6.4 104 km SSE of Ugashik, Alaska · 43 km S of this epicentre May 20, 1979
5.4 113 km SSE of Ugashik, Alaska · 49 km SSE of this epicentre Jan 27, 2004
5.1 68 km S of Ugashik, Alaska · 31 km WSW of this epicentre Jun 5, 1984
5.0 96 km SE of Ugashik, Alaska · 36 km ESE of this epicentre Apr 5, 2013

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

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

1.8 85 km S of Ugashik, Alaska 14:13 UTC
2.4 41 km SE of Ugashik, Alaska 13:46 UTC
1.8 63 km SE of Ugashik, Alaska 22:03 UTC
2.1 107 km SSE of Ugashik, Alaska 02:31 UTC
2.2 95 km SSE of Ugashik, Alaska 13:56 UTC
2.3 86 km ENE of Chignik, Alaska 09:05 UTC
2.0 52 km SE of Ugashik, Alaska 00:52 UTC
2.1 108 km ENE of Chignik, Alaska 19:49 UTC
2.4 57 km SE of Ugashik, Alaska 13:22 UTC
3.0 60 km SE of Ugashik, Alaska 05:04 UTC
3.9 71 km SE of Ugashik, Alaska 18:53 UTC
1.6 96 km SE of Ugashik, Alaska 08:27 UTC
1.9 91 km SE of Ugashik, Alaska 04:38 UTC
1.8 27 km SE of Ugashik, Alaska 21:35 UTC
1.9 71 km SE of Ugashik, Alaska 10:11 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 10:28 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.