26 km WSW of Chenega, Alaska

2022-01-07 20:32 UTC · 10 km deep · released about 30 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: 2022-01-07 20:32 UTC
Magnitude: M 2.0 (ml)
Depth: 10 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 1699 days ago · we first saw it 1699 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

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.

Where

Map loads when it scrolls into view

Epicentre 60.0111, -148.4793. Map © OpenStreetMap contributors.

Aftershocks so far

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

1.8 44 km S of Whittier, Alaska 15:59 UTC
1.7 43 km NW of Chenega, Alaska 15:59 UTC
1.6 33 km E of Lowell Point, Alaska 03:20 UTC
1.9 22 km SSW of Chenega, Alaska 01:17 UTC
1.5 25 km ESE of Lowell Point, Alaska 08:53 UTC
2.0 28 km ESE of Lowell Point, Alaska 03:06 UTC
2.1 40 km S of Chenega, Alaska 02:22 UTC
1.9 53 km SSE of Lowell Point, Alaska 00:10 UTC
1.8 35 km NW of Chenega, Alaska 08:39 UTC
1.6 6 km WNW of Chenega, Alaska 13:32 UTC
1.5 42 km SSE of Whittier, Alaska 17:55 UTC
1.5 32 km N of Chenega, Alaska 15:18 UTC
1.7 40 km WSW of Chenega, Alaska 07:39 UTC
1.6 33 km W of Chenega, Alaska 08:41 UTC
1.6 27 km W of Chenega, Alaska 03:13 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 12:40 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.