QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

36 km ESE of Skagway, Alaska

· 7.1 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skagway Municipality 43 kmHaines Borough 56 kmJuneau City and Borough 112 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 1.7 (ml)
Depth
7.1 km below the surface
Felt
no reports yet
Nearest
Skagway Municipality, 43 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1444 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 59.3435, -134.7131. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skagway Municipality, AK 43 km (27 mi) SE of here earthquakes near Skagway Municipality
Haines Borough, AK 56 km (35 mi) ENE of here earthquakes near Haines Borough
Juneau City and Borough, AK 112 km (70 mi) NNW of here earthquakes near Juneau City and Borough
Hoonah-Angoon Census Area, AK 124 km (77 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

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

  1. 3.5 26 km E of Mud Bay, Alaska
  2. 1.8 45 km SE of Mud Bay, Alaska
  3. 2.3 34 km E of Skagway, Alaska
  4. 2.0 70 km ESE of Mud Bay, Alaska
  5. 2.1 64 km ESE of Mud Bay, Alaska
  6. 3.3 48 km ESE of Mud Bay, Alaska
  7. 1.5 40 km ESE of Mud Bay, Alaska
  8. 1.8 52 km E of Mud Bay, Alaska
  9. 1.9 51 km E of Mud Bay, Alaska
  10. 1.8 37 km ESE of Mud Bay, Alaska
  11. 1.8 44 km ESE of Skagway, Alaska
  12. 2.0 50 km ESE of Mud Bay, Alaska
  13. 2.4 51 km ESE of Mud Bay, Alaska
  14. 4.2 51 km ESE of Mud Bay, Alaska
  15. 2.2 39 km ESE of Mud Bay, 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.