QuakeIndex

Earthquake · automatic estimate, may change

M 2.5ml

30 km W of Anderson, Alaska

Yes. A magnitude 2.5 earthquake was recorded 30 km W of Anderson, Alaska, at 2:20 am AKDT on 24 October 2026 (10:20 UTC), 13 km deep. The magnitude and location are an automatic first estimate and may change.

· 13 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Denali Borough 80 km
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
Magnitude
M 2.5 (ml)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Denali Borough, 80 km S
Nearest mapped fault
Northern Foothills thrust fault (Northern Foothills fold and thrust belt), 23 km from its surface trace — near is not the same as on
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 20 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 18 km (11 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 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 4.4 on 2021-06-19 — about 710 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.0 30 km W of Ferry, Alaska · 40 km S of this epicentre

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

Epicentre 64.3930, -149.7990. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Denali Borough, AK 80 km (50 mi) S earthquakes near Denali Borough
Yukon-Koyukuk Census Area, AK 138 km (86 mi) NW earthquakes near Yukon-Koyukuk Census Area

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

Aftershocks so far

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

  1. 1.5 53 km W of Clear, Alaska
  2. 2.2 29 km W of Anderson, Alaska
  3. 1.6 39 km WNW of Four Mile Road, Alaska
  4. 1.7 25 km WNW of Four Mile Road, Alaska
  5. 1.8 39 km WNW of Four Mile Road, Alaska
  6. 1.8 15 km NW of Anderson, Alaska
  7. 1.5 25 km WNW of Four Mile Road, Alaska
  8. 1.4 18 km NNW of Four Mile Road, Alaska
  9. 1.3 9 km W of Nenana, Alaska

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . 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 changedFromToWhen
location27 km W of Anderson, Alaska30 km W of Anderson, Alaska
longitude-149.76-149.8
latitude64.3764.39
depth13.612.8
magnitude2.42.5

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.