QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

111 km SE of Tuluksak, Alaska

· 14 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bethel Census Area 65 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 2.8 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Bethel Census Area, 65 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1318 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 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 60.5048, -159.3234. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bethel Census Area, AK 65 km (41 mi) SE of here earthquakes near Bethel Census Area
Dillingham Census Area, AK 122 km (76 mi) NNW of here earthquakes near Dillingham Census Area

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

Aftershocks so far

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

  1. 3.2 105 km NNW of Aleknagik, Alaska
  2. 4.9 106 km NNW of Aleknagik, Alaska
  3. 2.5 106 km NNW of Aleknagik, Alaska
  4. 3.7 109 km NNW of Aleknagik, Alaska
  5. 1.7 104 km SE of Akiak, Alaska
  6. 1.8 99 km SE of Akiak, Alaska
  7. 2.2 87 km S of Chuathbaluk, Alaska
  8. 2.0 98 km NNW of Aleknagik, Alaska
  9. 3.2 98 km NNW of Aleknagik, Alaska
  10. 2.5 112 km S of Chuathbaluk, Alaska
  11. 1.7 125 km NW of Koliganek, Alaska
  12. 1.9 112 km NW of Koliganek, Alaska
  13. 2.2 119 km S of Chuathbaluk, Alaska
  14. 1.7 122 km S of Chuathbaluk, Alaska
  15. 1.7 106 km NNW of Aleknagik, 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.