QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

21 km ENE of Minto, Alaska

Yes. A magnitude 1.8 earthquake was recorded 21 km ENE of Minto, Alaska, at 2:29 am AKST on 26 December 2025 (11:29 UTC), 9.6 km deep.

· 9.6 km deep · released about 15 lb 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 1.8 (ml)
Depth
9.6 km below the surface
Felt
no reports yet
Nearest
Fairbanks North Star Borough, 133 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 190 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 10 km (6 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 6.0 36 km E of Minto, Alaska · 20 km ESE of this epicentre
  2. 5.2 14 km E of Minto, Alaska · 12 km SSW of this epicentre
  3. 5.0 14 km E of Minto, Alaska · 11 km SSW 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 65.2560, -148.9530. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Fairbanks North Star Borough, AK 133 km (82 mi) ESE earthquakes near Fairbanks North Star Borough

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

Aftershocks so far

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

  1. 1.6 28 km SE of Minto, Alaska
  2. 1.8 27 km N of Four Mile Road, Alaska
  3. 1.5 25 km N of Four Mile Road, Alaska
  4. 2.0 33 km ESE of Minto, Alaska
  5. 1.6 20 km NE of Minto, Alaska
  6. 2.7 25 km N of Four Mile Road, Alaska
  7. 1.9 12 km N of Livengood, Alaska
  8. 1.6 28 km W of Ester, Alaska
  9. 2.4 26 km N of Four Mile Road, Alaska
  10. 2.1 25 km N of Four Mile Road, Alaska
  11. 2.2 10 km SSW of Livengood, Alaska
  12. 2.6 26 km N of Four Mile Road, Alaska
  13. 2.3 27 km N of Four Mile Road, Alaska
  14. 2.1 23 km N of Four Mile Road, Alaska
  15. 1.7 33 km NNE of Four Mile Road, 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.