QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

Earthquake near Fishhook, AK

No earthquake was likely felt in Fishhook in the 24 hours to 5:32 am AKST (14:32 UTC). The last one was M 4.4, 118 km (73 mi) E, at 11:11 am AKDT on 30 October 2026, estimated intensity II (weak) in town; 54 felt reports to USGS. Every earthquake near Fishhook

This page: a magnitude 3.1 earthquake was recorded 28 km (17 mi) northwest of Fishhook, AK, at 8:42 pm AKST on 21 January 2024 (05:42 UTC), 56 km deep. 10 people have reported feeling it to USGS.

USGS: 28 km NW of Fishhook, Alaska

83 km (52 mi) NNE of Anchorage, AK

8:42 pm AKST, Jan 21, 2024 · · 56 km deep · released about 1,300 lb of TNT

Every earthquake near Fishhook Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Matanuska-Susitna Borough 35 kmAnchorage Municipality 87 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
8:42 pm AKST on 21 January 2024 ()
Where
28 km (17 mi) northwest of Fishhook, AK · earthquakes near Fishhook
Magnitude
M 3.1 (ml)
Depth
56 km below the surface
Felt
10 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
Nearest
Matanuska-Susitna Borough, 35 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 958 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 Fishhook, 28 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.

Earthquakes near other towns within 30 km: Susitna North.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 250,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,900× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× more

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 4.6 on 2020-11-26 — about 180 times the energy of this one.

Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:

  1. 5.9 23 km NE of Willow, Alaska · 11 km WSW of this epicentre
  2. 5.8 37 km ENE of Susitna North, Alaska · 43 km NNE of this epicentre
  3. 5.8 14 km NNE of Fishhook, Alaska · 26 km ESE of this epicentre
  4. 5.4 25 km NNW of Willow, Alaska · 31 km W of this epicentre
  5. 5.3 3 km NNE of Houston, Alaska · 34 km SSW 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 61.9481, -149.5529. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Matanuska-Susitna Borough, AK 35 km (22 mi) N earthquakes near Matanuska-Susitna Borough
Anchorage Municipality, AK 87 km (54 mi) S earthquakes near Anchorage Municipality

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

Aftershocks so far

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

  1. 1.6 5 km NE of Big Lake, Alaska
  2. 1.5 6 km SE of Susitna North, Alaska
  3. 1.5 11 km NNW of Big Lake, Alaska
  4. 2.3 23 km NNE of Willow, Alaska
  5. 1.6 20 km S of Susitna North, Alaska
  6. 1.5 16 km WNW of Fishhook, Alaska
  7. 1.5 18 km ENE of Willow, Alaska
  8. 1.6 17 km SSE of Susitna North, Alaska
  9. 1.6 17 km S of Susitna North, Alaska
  10. 1.9 27 km NE of Susitna North, Alaska
  11. 2.0 8 km SSE of Houston, Alaska
  12. 1.7 6 km ENE of Big Lake, Alaska
  13. 1.6 24 km SE of Susitna North, Alaska
  14. 1.5 14 km NE of Susitna North, Alaska
  15. 1.6 20 km WNW of Fishhook, 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.