QuakeIndex

Earthquake · reviewed by a seismologist

M 4.6mwr

88 km W of Mosquito Lake, Alaska

· 1.5 km deep · released about 120 tons 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 4.6 (mwr)
Depth
1.5 km below the surface
Felt
11 reports · strongest reported intensity III
Measured shaking
intensity V (ShakeMap)
Tsunami
USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Nearest
Haines Borough, 131 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1151 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 11 people have reported feeling it to USGS.

How big was it?

This earthquake released about 120 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 1,400× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 63× the energy of this one
  3. Magna, Utah 2020 M 5.7 45× the energy of this one
  4. This earthquake M 4.6 about 120 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 250× 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 59.6131, -137.6481. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Haines Borough, AK 131 km (81 mi) WNW of here earthquakes near Haines Borough

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

Aftershocks so far

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

  1. 1.5 82.6 km ENE of Mosquito Lake, AK
  2. 1.6 79 km W of Mosquito Lake, Alaska
  3. 1.8 87 km W of Mosquito Lake, Alaska
  4. 1.6 99 km ENE of Yakutat, Alaska
  5. 1.5 79 km WSW of Covenant Life, Alaska
  6. 2.3 62 km WSW of Mosquito Lake, Alaska
  7. 1.8 74 km WNW of Mosquito Lake, Alaska
  8. 1.7 65 km WSW of Mosquito Lake, Alaska
  9. 1.5 87 km WNW of Mosquito Lake, Alaska
  10. 2.6 95 km W of Mosquito Lake, Alaska
  11. 1.5 88 km WNW of Mosquito Lake, Alaska
  12. 2.4 91 km E of Yakutat, Alaska
  13. 1.7 89 km WNW of Mosquito Lake, Alaska
  14. 2.3 89 km ESE of Yakutat, Alaska
  15. 1.6 74 km WSW of Mosquito Lake, 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.