Earthquake · reviewed by a seismologist
M 1.5ml
Earthquake near Fishhook, AK
No earthquake was likely felt in Fishhook in the 24 hours to 8:50 am AKST (17:50 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 1.5 earthquake was recorded 21 km (13 mi) north of Fishhook, AK, at 2:16 am AKDT on 21 September 2024 (10:16 UTC), 8.5 km deep.
USGS: 20 km N of Fishhook, Alaska
86 km (54 mi) NNE of Anchorage, AK
- When
- 2:16 am AKDT on 21 September 2024 ()
- Where
- 21 km (13 mi) north of Fishhook, AK · earthquakes near Fishhook
- Magnitude
- M 1.5 (ml)
- Depth
- 8.5 km below the surface
- Felt
- no reports yet
- Nearest
- Matanuska-Susitna Borough, 40 km NNW
- Nearest mapped fault
- Castle Mountain fault, 22 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 748 days ago
Earthquake alerts for Fishhook, AK
Get a notification in this browser when USGS records an earthquake near Fishhook, AK. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 5 km (3 mi) from the epicentre. In Fishhook, 21 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 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 4.5 on 2023-01-16 — about 32,000 times the energy of this one.
Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:
- 5.9 23 km NE of Willow, Alaska · 26 km W of this epicentre
- 5.8 37 km ENE of Susitna North, Alaska · 41 km N of this epicentre
- 5.8 14 km NNE of Fishhook, Alaska · 11 km SE of this epicentre
- 5.4 25 km NNW of Willow, Alaska · 47 km W of this epicentre
- 5.3 3 km NNE of Houston, Alaska · 41 km SW 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 61.9292, -149.2447. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Matanuska-Susitna Borough, AK | 40 km (25 mi) | NNW | earthquakes near Matanuska-Susitna Borough |
| Anchorage Municipality, AK | 84 km (52 mi) | S | earthquakes near Anchorage Municipality |
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.
- 2.2 15 km WNW of Fishhook, Alaska
- 1.6 5 km NW of Tanaina, Alaska
- 1.6 44 km ENE of Susitna North, Alaska
- 1.7 36 km ENE of Susitna North, Alaska
- 1.7 20 km ENE of Willow, Alaska
- 1.5 25 km E of Susitna North, Alaska
- 2.0 6 km NW of Tanaina, Alaska
- 1.6 12 km SSE of Susitna North, Alaska
- 2.5 6 km NW of Tanaina, Alaska
- 1.7 32 km ESE of Susitna North, Alaska
- 1.5 6 km NW of Fishhook, Alaska
- 1.8 28 km NE of Susitna North, Alaska
- 2.9 16 km ENE of Willow, Alaska
- 1.6 21 km ESE of Susitna North, Alaska
- 1.5 5 km WNW of Meadow Lakes, 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
- 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.