QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

17 km SW of Glacier View, Alaska

Yes. A magnitude 2.6 earthquake was recorded 17 km SW of Glacier View, Alaska, at 4:53 pm AKST on 15 December 2022 (01:53 UTC), 22 km deep.

· 22 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Anchorage Municipality 94 kmMatanuska-Susitna Borough 108 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 2.6 (ml)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Anchorage Municipality, 94 km SW
Nearest mapped fault
Castle Mountain fault, 16 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1363 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 9 km (6 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.8 on 2022-10-06 — about 2,000 times the energy of this one.

Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.8 31 km SSW of Glacier View, Alaska · 17 km SSE of this epicentre
  2. 6.4 23 km S of Glacier View, Alaska · 14 km SE of this epicentre
  3. 6.4 37 km SSE of Glacier View, Alaska · 32 km SE of this epicentre
  4. 5.9 15 km N of Glacier View, Alaska · 31 km NNE of this epicentre
  5. 5.9 42 km S of Glacier View, Alaska · 31 km SSE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 61.6792, -147.8564. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Anchorage Municipality, AK 94 km (59 mi) SW earthquakes near Anchorage Municipality
Matanuska-Susitna Borough, AK 108 km (67 mi) NW earthquakes near Matanuska-Susitna Borough

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. 1.7 40 km SSE of Glacier View, Alaska
  2. 1.6 16 km S of Glacier View, Alaska
  3. 1.6 24 km SSW of Glacier View, Alaska
  4. 1.6 26 km SW of Glacier View, Alaska
  5. 1.6 44 km ESE of Knik River, Alaska
  6. 1.6 14 km WNW of Eureka Roadhouse, Alaska
  7. 1.7 61 km S of Glacier View, Alaska
  8. 1.8 52 km S of Glacier View, Alaska
  9. 1.5 43 km SSW of Glacier View, Alaska
  10. 1.5 61 km S of Glacier View, Alaska
  11. 2.1 40 km SSE of Glacier View, Alaska
  12. 2.3 30 km SW of Glacier View, Alaska
  13. 1.7 55 km S of Glacier View, Alaska
  14. 1.5 26 km N of Glacier View, Alaska
  15. 1.5 61 km S of Glacier View, 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.