17 km W of Ivanof Bay, Alaska

2026-10-02 06:36 UTC · 14 km deep · released about 60 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: 2026-10-02 06:36 UTC
Magnitude: M 2.2 (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 2 hours ago · we first saw it 20 hours ago

A magnitude 2.2 earthquake was recorded 17 km W of Ivanof Bay, Alaska at 06:36 UTC on 2026-10-02. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
Magna, Utah 2020 M 5.7 180,000× the energy of this one
Around the size people start to feel M 3.0 16× the energy of this one
This earthquake M 2.2 about 60 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 4.7 on 2025-02-19 — about 5,600 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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

Epicentre 55.8960, -159.7610. Map © OpenStreetMap contributors.

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

1.7 21 km WSW of Ivanof Bay, Alaska 08:07 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 02:47 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

Revisions

USGS refines a solution as more stations report. Every change we have seen is listed here.

What changed	From	To	When
magnitude	1.7	2.2	06:39 UTC

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.