QuakeIndex

Earthquake · reviewed by a seismologist

M 4.4mwr

82 km SE of Akutan, Alaska

Yes. A magnitude 4.4 earthquake was recorded 82 km SE of Akutan, Alaska, at 8:26 pm AKDT on 25 April 2026 (04:26 UTC), 42 km deep. 1 person has reported feeling it to USGS.

· 42 km deep · released about 60 tons of TNT

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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 4.4 (mwr)
Depth
42 km below the surface
Felt
1 report · strongest reported intensity II
Measured shaking
intensity III (ShakeMap)
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 125 days 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 123 km (76 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 60 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 2,800× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 130× the energy of this one
  3. Magna, Utah 2020 M 5.7 89× the energy of this one
  4. This earthquake M 4.4 about 60 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 130× 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 5.5 on 2026-04-25 — about 45 times the energy of this one.

Before 2016, the USGS record lists 34 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.6 92 km SE of Akutan, Alaska · 12 km E of this epicentre
  2. 6.5 59 km ESE of Akutan, Alaska · 31 km NNW of this epicentre
  3. 6.5 83 km SE of Akutan, Alaska · 11 km NE of this epicentre
  4. 6.5 81 km ESE of Akutan, Alaska · 20 km NNE of this epicentre
  5. 6.4 50 km SE of Akutan, Alaska · 33 km NW 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 53.6421, -164.8292. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 2.2 81 km SE of Akutan, Alaska
  2. 2.2 86 km SSE of Akutan, Alaska
  3. 2.7 103 km SE of Akutan, Alaska
  4. 2.5 81 km SSE of Akutan, Alaska
  5. 2.4 60 km ESE of Akutan, Alaska
  6. 2.5 101 km ESE of Akutan, Alaska
  7. 2.5 100 km SE of Akutan, Alaska
  8. 2.3 102 km SE of Akutan, Alaska
  9. 2.5 107 km ESE of Akutan, Alaska
  10. 2.4 99 km SE of Akutan, Alaska
  11. 2.4 102 km SE of Akutan, Alaska
  12. 2.5 82 km ESE of Akutan, Alaska
  13. 2.4 112 km SE of Akutan, Alaska
  14. 2.3 114 km SE of Akutan, Alaska
  15. 2.5 102 km SE of Akutan, 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.

On USGS

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