QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

23 km NE of Excursion Inlet, Alaska

· 2.4 km deep · released about 30 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hoonah-Angoon Census Area 47 kmJuneau City and Borough 59 kmHaines Borough 65 kmSkagway Municipality 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 2.0 (ml)
Depth
2.4 km below the surface
Felt
no reports yet
Nearest
Hoonah-Angoon Census Area, 47 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1147 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 30 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 350,000× the energy of this one
  3. Around the size people start to feel M 3.0 32× the energy of this one
  4. This earthquake M 2.0 about 30 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 58.5569, -135.1298. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hoonah-Angoon Census Area, AK 47 km (29 mi) ENE of here earthquakes near Hoonah-Angoon Census Area
Juneau City and Borough, AK 59 km (37 mi) WNW of here earthquakes near Juneau City and Borough
Haines Borough, AK 65 km (41 mi) SSE of here earthquakes near Haines Borough
Skagway Municipality, AK 112 km (70 mi) S of here earthquakes near Skagway Municipality

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

Aftershocks so far

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

  1. 3.0 45 km SE of Mud Bay, Alaska
  2. 1.7 30 km NNE of Excursion Inlet, Alaska
  3. 1.8 45 km SE of Mud Bay, Alaska
  4. 1.9 25 km S of Mud Bay, Alaska
  5. 1.5 18 km SE of Excursion Inlet, Alaska
  6. 1.6 22 km S of Mud Bay, Alaska
  7. 2.0 25 km SSE of Mud Bay, Alaska
  8. 1.8 Southeastern Alaska
  9. 2.3 27 km SSE of Mud Bay, Alaska
  10. 1.8 49 km NNW of Juneau, Alaska
  11. 3.0 27 km S of Mud Bay, Alaska
  12. 1.5 26 km S of Mud Bay, Alaska
  13. 1.7 30 km WSW of Juneau, Alaska
  14. 1.5 31 km SSE of Mud Bay, Alaska
  15. 1.9 25 km S 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.