QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

102 km S of Chuathbaluk, Alaska

· 2.3 km deep · released about 1.3 tons of TNT

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10 km30 km60 km120 km N Bethel Census Area 68 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 3.3 (ml)
Depth
2.3 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Bethel Census Area, 68 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 891 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 60.6591, -159.0243. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bethel Census Area, AK 68 km (42 mi) ESE of here earthquakes near Bethel Census Area

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. 2.9 55 km S of Chuathbaluk, Alaska
  2. 3.7 109 km NNW of Aleknagik, Alaska
  3. 1.9 58 km SSE of Chuathbaluk, Alaska
  4. 1.6 103 km SSE of Chuathbaluk, Alaska
  5. 2.2 87 km S of Chuathbaluk, Alaska
  6. 2.1 57 km SSE of Chuathbaluk, Alaska
  7. 2.5 112 km S of Chuathbaluk, Alaska
  8. 1.7 125 km NW of Koliganek, Alaska
  9. 1.9 112 km NW of Koliganek, Alaska
  10. 2.2 119 km S of Chuathbaluk, Alaska
  11. 1.7 122 km S of Chuathbaluk, Alaska
  12. 2.4 113 km NW of Koliganek, 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.