QuakeIndex

ice quake · automatic estimate, may change

M 1.6ml

40 km S of Glacier View, Alaska

· 13 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Anchorage Municipality 91 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 1.6 (ml)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Anchorage Municipality, 91 km WSW
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 2515 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 61.4469, -147.6678. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Anchorage Municipality, AK 91 km (57 mi) ENE of here earthquakes near Anchorage Municipality
Matanuska-Susitna Borough, AK 133 km (82 mi) SE of here earthquakes near Matanuska-Susitna Borough
Chugach Census Area, AK 133 km (82 mi) NW 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

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

  1. 1.6 68 km WNW of Tatitlek, Alaska
  2. 1.5 41 km ESE of Knik River, Alaska
  3. 1.6 20 km S of Glacier View, Alaska
  4. 2.1 52 km ESE of Knik River, Alaska
  5. 1.6 57 km S of Glacier View, Alaska
  6. 2.0 18 km SW of Glacier View, Alaska
  7. 1.6 54 km WNW of Valdez, Alaska
  8. 1.8 54 km S of Glacier View, Alaska
  9. 1.6 51 km S of Glacier View, Alaska
  10. 1.8 20 km SSE of Glacier View, Alaska
  11. 1.5 33 km S of Eureka Roadhouse, Alaska
  12. 1.5 61 km S of Glacier View, Alaska
  13. 2.0 8 km NNW of Glacier View, Alaska
  14. 1.6 50 km SSE of Glacier View, Alaska
  15. 1.5 52 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2018-01-27 — it released about 32,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.