QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

37 km E of Skagway, Alaska

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

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10 km30 km60 km120 km N Skagway Municipality 40 kmHaines Borough 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 3.2 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Skagway Municipality, 40 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1147 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 59.4658, -134.6563. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skagway Municipality, AK 40 km (25 mi) ESE of here earthquakes near Skagway Municipality
Haines Borough, AK 66 km (41 mi) NE of here earthquakes near Haines Borough
Hoonah-Angoon Census Area, AK 138 km (85 mi) NNE of here earthquakes near Hoonah-Angoon Census Area

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

Aftershocks so far

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

  1. 3.5 26 km E of Mud Bay, Alaska
  2. 2.3 34 km E of Skagway, Alaska
  3. 3.3 48 km ESE of Mud Bay, Alaska
  4. 1.8 52 km E of Mud Bay, Alaska
  5. 1.9 51 km E of Mud Bay, Alaska
  6. 1.8 37 km ESE of Mud Bay, Alaska
  7. 1.8 44 km ESE of Skagway, Alaska
  8. 2.0 50 km ESE of Mud Bay, Alaska
  9. 2.4 51 km ESE of Mud Bay, Alaska
  10. 4.2 51 km ESE of Mud Bay, Alaska
  11. 1.7 36 km ESE of Skagway, Alaska
  12. 1.6 47 km ESE of Skagway, Alaska
  13. 1.6 29 km ESE of Mud Bay, Alaska
  14. 1.7 48 km ESE of Skagway, Alaska
  15. 1.7 16 km SE of Skagway, 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.