Earthquake near Fishhook, AK

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

At this magnitude and depth, people at rest would likely notice it out to about 125 km (78 mi) from the epicentre. In Fishhook, 37 km away, the estimate is intensity III (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.

Likely felt in: Susitna North 34 km, intensity III · Fishhook 37 km, intensity III · Sutton-Alpine 44 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 60 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.4 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 2,800× the energy of this one
2. Mineral, Virginia 2011 M 5.8 130× the energy of this one
3. Magna, Utah 2020 M 5.7 89× the energy of this one
4. This earthquake M 4.4 about 60 tons of TNT
5. Around the size people start to feel M 3.0 this one released 130× 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 4.5 on 2023-01-16 — about 1.4 times the energy of this one.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

1. 5.9 23 km NE of Willow, Alaska · 33 km SW of this epicentre Jan 1, 1975
2. 5.8 37 km ENE of Susitna North, Alaska · 24 km N of this epicentre Jul 3, 1929
3. 5.8 14 km NNE of Fishhook, Alaska · 25 km SSE of this epicentre Aug 14, 1984
4. 5.4 25 km NNW of Willow, Alaska · 50 km WSW of this epicentre May 10, 1962
5. 5.1 21 km SSE of Susitna North, Alaska · 27 km WSW of this epicentre Dec 30, 1974

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 62.0798, -149.2123. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 1.8 4 km NNW of Fishhook, Alaska 23:15 UTC
2. 1.9 27 km ESE of Susitna North, Alaska 19:33 UTC
3. 2.2 28 km E of Chase, Alaska 07:50 UTC
4. 1.5 36 km N of Fishhook, Alaska 18:42 UTC
5. 1.5 31 km NE of Susitna North, Alaska 06:19 UTC
6. 1.5 41 km ENE of Susitna North, Alaska 07:20 UTC
7. 1.5 57 km NNW of Chickaloon, Alaska 13:03 UTC
8. 1.8 8 km NNW of Sutton-Alpine, Alaska 08:22 UTC
9. 1.6 8 km NNW of Sutton-Alpine, Alaska 07:42 UTC
10. 2.2 34 km N of Sutton-Alpine, Alaska 01:59 UTC
11. 1.5 43 km ENE of Susitna North, Alaska 10:20 UTC
12. 1.6 14 km WNW of Fishhook, Alaska 01:36 UTC
13. 1.9 11 km ENE of Susitna North, Alaska 10:34 UTC
14. 2.1 14 km NNE of Meadow Lakes, Alaska 06:02 UTC
15. 1.5 46 km NE of Susitna North, Alaska 17:31 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 21:32 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

• The official USGS event page — the source of record for every value above
• Did you feel it? Report it to USGS — reports go to USGS, not to us
• ShakeMap for this event, when USGS has produced one

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