QuakeIndex

Earthquake · reviewed by a seismologist

M 4.3mw

41 km W of Clear, Alaska, Alaska

· 25 km deep · released about 43 tons of TNT

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10 km30 km60 km120 km N Denali Borough 57 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 4.3 (mw)
Depth
25 km below the surface
Felt
136 reports · strongest reported intensity V
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Nearest
Denali Borough, 57 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1150 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 136 people have reported feeling it to USGS.

How big was it?

This earthquake released about 43 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 4,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 180× the energy of this one
  3. Magna, Utah 2020 M 5.7 130× the energy of this one
  4. This earthquake M 4.3 about 43 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 89× 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 64.1937, -150.0376. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Denali Borough, AK 57 km (35 mi) N of here earthquakes near Denali Borough

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

Aftershocks so far

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

  1. 1.5 33 km W of Clear, Alaska, Alaska
  2. 3.4 32 km W of Clear, Alaska, Alaska
  3. 1.8 50 km WSW of Ferry, Alaska
  4. 1.7 39 km W of Four Mile Road, Alaska
  5. 1.9 34 km WSW of Ferry, Alaska
  6. 1.5 22 km W of Four Mile Road, Alaska
  7. 1.7 38 km W of Four Mile Road, Alaska
  8. 1.6 42 km W of Four Mile Road, Alaska
  9. 1.6 31 km W of Anderson, Alaska
  10. 1.7 40 km WSW of Clear, Alaska, Alaska
  11. 2.0 39 km W of Clear, Alaska, Alaska
  12. 1.5 29 km W of Anderson, Alaska
  13. 1.6 42 km WSW of Ferry, Alaska
  14. 1.8 32 km W of Ferry, Alaska
  15. 1.5 25 km W of Ferry, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.0 on 2016-11-06.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.