QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

Earthquake near Willow, AK

No earthquake was likely felt in Willow in the 24 hours to 5:06 am AKST (14:06 UTC). The last one was M 2.8, 20 km (12 mi) S, at 6:17 am AKST on 6 November 2026, estimated intensity II (weak) in town; 3 felt reports to USGS. Every earthquake near Willow

This page: a magnitude 2.9 earthquake was recorded 41 km (26 mi) northwest of Willow, AK, at 5:13 pm AKST on 7 November 2022 (02:13 UTC), 60 km deep. 1 person has reported feeling it to USGS.

USGS: 34 km SSW of Trapper Creek, Alaska

97 km (60 mi) NNW of Anchorage, AK

5:13 pm AKST, Nov 7, 2022 · · 60 km deep · released about 680 lb of TNT

Every earthquake near Willow Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Matanuska-Susitna Borough 58 kmAnchorage Municipality 116 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
5:13 pm AKST on 7 November 2022 ()
Where
41 km (26 mi) northwest of Willow, AK · earthquakes near Willow
Magnitude
M 2.9 (ml)
Depth
60 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Matanuska-Susitna Borough, 58 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1392 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 it was probably too small to be felt, even directly above it. In Willow, 41 km away, the estimate is intensity II (weak). 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 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 5.2 on 2019-09-17 — about 2,800 times the energy of this one.

Before 2016, the USGS record lists 13 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.9 27 km SE of Skwentna, Alaska · 37 km SW of this epicentre
  2. 5.9 23 km NE of Willow, Alaska · 43 km ESE of this epicentre
  3. 5.7 19 km E of Skwentna, Alaska · 27 km WSW of this epicentre
  4. 5.6 5 km N of Susitna, Alaska · 49 km S of this epicentre
  5. 5.4 25 km NNW of Willow, Alaska · 21 km ESE 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 62.0416, -150.5170. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Matanuska-Susitna Borough, AK 58 km (36 mi) ENE earthquakes near Matanuska-Susitna Borough
Anchorage Municipality, AK 116 km (72 mi) SE earthquakes near Anchorage Municipality

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

Aftershocks so far

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

  1. 1.8 27 km WNW of Susitna, Alaska
  2. 2.6 9 km N of Susitna, Alaska
  3. 1.6 24 km NW of Willow, Alaska
  4. 1.5 19 km NW of Susitna, Alaska
  5. 1.6 33 km ENE of Skwentna, Alaska
  6. 1.5 Central Alaska
  7. 1.8 27 km SSW of Petersville, Alaska
  8. 1.6 19 km WNW of Willow, Alaska
  9. 1.6 Southern Alaska
  10. 1.8 Southern Alaska
  11. 1.8 12 km W of Susitna North, Alaska
  12. 1.5 13 km WNW of Susitna North, Alaska
  13. 1.6 11 km W of Susitna North, Alaska
  14. 1.8 12 km W of Susitna North, Alaska
  15. 2.5 12 km W of Susitna North, 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.