QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

92 km SE of Chenega, Alaska

· 13 km deep · released about 1,900 lb of TNT

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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 3.2 (ml)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Chugach Census Area, 126 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1464 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 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,600× the energy of this one
  4. This earthquake M 3.2 about 1,900 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2× 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 59.4211, -146.9638. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Chugach Census Area, AK 126 km (78 mi) SSW of here earthquakes near Chugach Census Area

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

Aftershocks so far

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

  1. 1.6 98 km SE of Chenega, Alaska
  2. 1.8 106 km SE of Chenega, Alaska
  3. 2.4 64 km SSE of Chenega, Alaska
  4. 2.4 112 km SSE of Chenega, Alaska
  5. 2.6 80 km ESE of Chenega, Alaska
  6. 1.8 58 km SE of Chenega, Alaska
  7. 2.8 84 km SSE of Chenega, Alaska
  8. 1.7 119 km SE of Chenega, Alaska
  9. 2.1 117 km SE of Chenega, Alaska
  10. 2.0 114 km SSE of Chenega, Alaska
  11. 2.3 109 km SE of Chenega, Alaska
  12. 1.6 109 km SE of Chenega, Alaska
  13. 1.8 120 km SE of Chenega, Alaska
  14. 1.9 116 km SE of Chenega, Alaska
  15. 2.7 112 km SE of Chenega, 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

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