8 km ESE of Womens Bay, Alaska

2025-10-16 07:34 UTC · 35 km deep · released about 1,900 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: 2025-10-16 07:34 UTC
Magnitude: M 3.2 (ml)
Depth: 35 km below the surface
Felt: 13 reports · strongest reported intensity III
Nearest: Kodiak Island Borough, 83 km W
Status: Reviewed by a seismologist

USGS · last changed by USGS 261 days ago · we first saw it 261 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 13 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

Northridge, California 1994 M 6.7 180,000× the energy of this one
Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
Magna, Utah 2020 M 5.7 5,600× the energy of this one
This earthquake M 3.2 about 1,900 lb of TNT
Around the size people start to feel M 3.0 this one released 2× more

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.

Where

Map loads when it scrolls into view

Epicentre 57.6609, -152.5296. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Kodiak Island Borough, AK	83 km (51 mi)	E of here	earthquakes near Kodiak Island Borough

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

2.4 25 km S of Womens Bay, Alaska 21:30 UTC
2.4 12 km ESE of Kodiak, Alaska 12:11 UTC
2.2 5 km SE of Port Lions, Alaska 06:21 UTC
1.8 14 km SSE of Womens Bay, Alaska 04:38 UTC
2.1 17 km SSE of Chiniak, Alaska 12:21 UTC
2.8 4 km SE of Port Lions, Alaska 23:17 UTC
3.0 8 km NNE of Kodiak Station, Alaska 15:11 UTC
2.7 22 km S of Chiniak, Alaska 17:21 UTC
2.2 30 km SW of Womens Bay, Alaska 11:15 UTC
2.3 0 km ESE of Ouzinkie, Alaska 20:15 UTC
2.4 17 km SW of Chiniak, Alaska 20:14 UTC
4.2 24 km SSW of Chiniak, Alaska 02:36 UTC
2.1 3 km ESE of Kodiak, Alaska 08:02 UTC
2.1 9 km SW of Womens Bay, Alaska 09:00 UTC
3.1 22 km ENE of Kodiak, Alaska 07:34 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2017-03-05 — it released about 22 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

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.