QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

85 km W of Karluk, Alaska

· 88 km deep · released about 1.9 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lake and Peninsula Borough 60 kmKodiak Island Borough 116 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 3.4 (ml)
Depth
88 km below the surface
Felt
no reports yet
Nearest
Lake and Peninsula Borough, 60 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1145 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 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4× 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.

Where

Epicentre 57.6587, -155.8679. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lake and Peninsula Borough, AK 60 km (37 mi) SSE of here earthquakes near Lake and Peninsula Borough
Kodiak Island Borough, AK 116 km (72 mi) W of here earthquakes near Kodiak Island Borough
Bristol Bay Borough, AK 136 km (85 mi) SSE of here earthquakes near Bristol Bay Borough

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

Aftershocks so far

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

  1. 2.0 78 km E of Ugashik, Alaska
  2. 2.0 74 km E of Ugashik, Alaska
  3. 1.7 65 km W of Karluk, Alaska
  4. 1.5 74 km ENE of Ugashik, Alaska
  5. 1.7 83 km WNW of Karluk, Alaska
  6. 1.8 59 km W of Karluk, Alaska
  7. 1.7 74 km ENE of Ugashik, Alaska
  8. 1.9 71 km WSW of Karluk, Alaska
  9. 2.7 65 km W of Karluk, Alaska
  10. 1.7 Alaska Peninsula
  11. 1.5 72 km W of Karluk, Alaska
  12. 2.0 80 km ESE of Egegik, Alaska
  13. 2.1 76 km ESE of Egegik, Alaska
  14. 1.5 89 km ESE of Ugashik, Alaska
  15. 2.1 Alaska Peninsula

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.