QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

48 km NE of Wrangell, Alaska

· 7.1 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Wrangell City and Borough 70 kmPetersburg Borough 76 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
7.1 km below the surface
Felt
no reports yet
Nearest
Wrangell City and Borough, 70 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1884 days ago

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

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.

Where

Epicentre 56.8099, -131.8864. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Wrangell City and Borough, AK 70 km (44 mi) N of here earthquakes near Wrangell City and Borough
Petersburg Borough, AK 76 km (47 mi) ESE of here earthquakes near Petersburg Borough

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

Aftershocks so far

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

  1. 2.1 42 km ENE of Petersburg, Alaska
  2. 2.0 75 km ENE of Petersburg, Alaska
  3. 2.5 73 km ENE of Petersburg, Alaska
  4. 2.0 44 km NNE of Wrangell, Alaska
  5. 1.7 70 km ENE of Petersburg, Alaska
  6. 2.8 34 km E of Petersburg, Alaska
  7. 1.9 70 km ENE of Wrangell, Alaska
  8. 1.7 65 km NE of Wrangell, Alaska
  9. 1.8 58 km ENE of Petersburg, Alaska
  10. 3.2 69 km ENE of Wrangell, Alaska
  11. 1.8 39 km N of Wrangell, Alaska
  12. 2.3 Southeastern 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.