QuakeIndex

ice quake · reviewed by a seismologist

M 1.5ml

39 km NNW of Chenega, Alaska

· 0.0 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Anchorage Municipality 102 kmChugach Census Area 118 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 1.5 (ml)
Depth
0.0 km below the surface
Felt
no reports yet
Nearest
Anchorage Municipality, 102 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 730 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as ice quake, not an earthquake.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 60.3817, -148.3483. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Anchorage Municipality, AK 102 km (63 mi) SSE of here earthquakes near Anchorage Municipality
Chugach Census Area, AK 118 km (74 mi) W of here earthquakes near Chugach Census Area

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. 1.8 9 km NE of Chenega, Alaska
  2. 1.7 30 km WSW of Chenega, Alaska
  3. 2.5 24 km WNW of Chenega, Alaska
  4. 1.5 30 km SE of Whittier, Alaska
  5. 1.6 36 km SSE of Whittier, Alaska
  6. 1.9 25 km SSE of Whittier, Alaska
  7. 1.5 49 km ESE of Whittier, Alaska
  8. 1.5 27 km WNW of Chenega, Alaska
  9. 2.2 37 km E of Primrose, Alaska
  10. 1.6 6 km NW of Chenega, Alaska
  11. 3.0 8 km SSW of Whittier, Alaska
  12. 1.5 51 km NNE of Chenega, Alaska
  13. 1.8 10 km E of Chenega, Alaska
  14. 1.9 38 km SSE of Whittier, Alaska
  15. 1.8 26 km WSW of Chenega, 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.