114 km SSW of Nikolski, Alaska

Yes. A magnitude 4.7 earthquake was recorded 114 km SSW of Nikolski, Alaska at 13:16 UTC on 2026-10-15, 10 km deep. No felt reports to USGS yet.

2026-10-15 13:16 UTC · 10 km deep · released about 170 tons of TNT

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Distance rings around the epicentre, with the nearest towns at their true direction. Not a shaking map — see the USGS ShakeMap for that.

When: 2026-10-15 13:16 UTC
Magnitude: M 4.7 (mb)
Depth: 10 km below the surface
Felt: no reports yet
Measured shaking: intensity III (ShakeMap)
Status: Reviewed by a seismologist

USGS · last changed by USGS 2 hours ago · we first saw it 2 hours ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

At this magnitude and depth, people at rest would likely notice it out to about 159 km (99 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 170 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.7 would have released about 32 times as much.

Northridge, California 1994 M 6.7 1,000× the energy of this one
Mineral, Virginia 2011 M 5.8 45× the energy of this one
Magna, Utah 2020 M 5.7 32× the energy of this one
This earthquake M 4.7 about 170 tons of TNT
Around the size people start to feel M 3.0 this one released 350× 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.

For this area

The largest earthquake within 50 km since 2016 was M 6.3 on 2026-09-03 — about 250 times the energy of this one.

Before 2016, the USGS record lists 107 earthquakes of M5 or more within 50 km; the five largest:

6.9 77 km SSW of Nikolski, Alaska · 39 km NNE of this epicentre Jan 23, 1935
6.9 80 km SW of Nikolski, Alaska · 39 km N of this epicentre Mar 9, 1957
6.9 Fox Islands, Aleutian Islands, Alaska · 42 km NNE of this epicentre Jul 27, 2015
6.8 79 km SW of Nikolski, Alaska · 40 km N of this epicentre Jan 28, 1967
6.6 135 km SW of Nikolski, Alaska · 35 km W of this epicentre Dec 23, 1906

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

No further earthquakes have been recorded within 50 km since this one.

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 16:02 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.