QuakeIndex

ice quake · reviewed by a seismologist

M 1.7ml

35 km NNE of Whittier, Alaska

· 0.0 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Anchorage Municipality 50 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
0.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Anchorage Municipality, 50 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1511 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

USGS catalogues this as ice quake, not an earthquake.

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 61.0590, -148.3908. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Anchorage Municipality, AK 50 km (31 mi) ESE of here earthquakes near Anchorage Municipality
Chugach Census Area, AK 135 km (84 mi) WNW 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

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

  1. 1.7 31 km ENE of Whittier, Alaska
  2. 1.5 38 km NNE of Whittier, Alaska
  3. 1.5 42 km NE of Whittier, Alaska
  4. 2.2 47 km SSW of Glacier View, Alaska
  5. 2.4 36 km NE of Whittier, Alaska
  6. 1.6 40 km NNE of Whittier, Alaska
  7. 1.6 41 km NNE of Whittier, Alaska
  8. 1.6 32 km NNE of Whittier, Alaska
  9. 1.6 41 km NNE of Whittier, Alaska
  10. 1.5 43 km NE of Whittier, Alaska
  11. 1.8 39 km NNE of Whittier, Alaska
  12. 1.7 40 km ENE of Girdwood, Alaska
  13. 1.5 34 km NNE of Whittier, Alaska
  14. 1.5 31 km NE of Whittier, Alaska
  15. 1.6 43 km NE of Whittier, 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.