QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

113 km ESE of Tuluksak, Alaska

· 7.5 km deep · released about 5.4 lb of TNT

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10 km30 km60 km120 km N Bethel Census Area 66 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 1.5 (ml)
Depth
7.5 km below the surface
Felt
no reports yet
Nearest
Bethel Census Area, 66 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 947 days ago

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

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 60.5504, -159.2088. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bethel Census Area, AK 66 km (41 mi) SE of here earthquakes near Bethel Census Area
Dillingham Census Area, AK 124 km (77 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

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

  1. 2.5 106 km NNW of Aleknagik, Alaska
  2. 3.7 109 km NNW of Aleknagik, Alaska
  3. 1.8 99 km SE of Akiak, Alaska
  4. 2.2 87 km S of Chuathbaluk, Alaska
  5. 2.5 112 km S of Chuathbaluk, Alaska
  6. 1.7 125 km NW of Koliganek, Alaska
  7. 1.9 112 km NW of Koliganek, Alaska
  8. 2.2 119 km S of Chuathbaluk, Alaska
  9. 1.7 122 km S of Chuathbaluk, Alaska
  10. 1.7 106 km NNW of Aleknagik, Alaska
  11. 1.8 101 km NNW of Aleknagik, Alaska
  12. 2.4 113 km NW of Koliganek, Alaska
  13. 2.1 92 km SE of Tuluksak, Alaska
  14. 2.1 84 km SE of Tuluksak, Alaska
  15. 3.3 102 km S of Chuathbaluk, 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.