Earthquake · automatic estimate, may change
M 2.4ml
Earthquake near Anchorage, AK
USGS: 24 km ENE of Beluga, Alaska
40 km (25 mi) W of Anchorage, AK
- When
- 9:25 am AKDT on 30 September 2026 ()
- Where
- 40 km (25 mi) W of Anchorage, AK · earthquakes near Anchorage
- Magnitude
- M 2.4 (ml)
- Depth
- 49 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Anchorage Municipality, 73 km E
- Nearest mapped fault
- Castle Mountain fault, 23 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 2 days ago
A magnitude 2.4 earthquake was recorded 40 km (25 mi) W of Anchorage, AK, at 9:25 am AKDT on 30 September 2026 (17:25 UTC). 1 person has reported feeling it to USGS. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
How big was it?
This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
- Magna, Utah 2020 M 5.7 89,000× the energy of this one
- Around the size people start to feel M 3.0 7.9× the energy of this one
- This earthquake M 2.4 about 120 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 6.0 on 2025-11-27 — about 250,000 times the energy of this one.
Before 2016, the USGS record lists 24 earthquakes of M5 or more within 50 km; the five largest:
- 6.8 Southern Alaska · 28 km WSW of this epicentre
- 6.8 4 km NE of Beluga, Alaska · 20 km W of this epicentre
- 6.4 19 km SSE of Tyonek, Alaska · 40 km SW of this epicentre
- 5.8 17 km NW of Beluga, Alaska · 39 km W of this epicentre
- 5.8 27 km N of Beluga, Alaska · 30 km NW 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 61.1930, -150.6370. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Anchorage Municipality, AK | 73 km (45 mi) | E | earthquakes near Anchorage Municipality |
| Kenai Peninsula Borough, AK | 130 km (81 mi) | SW | earthquakes near Kenai Peninsula Borough |
| Matanuska-Susitna Borough, AK | 133 km (83 mi) | NNE | earthquakes near Matanuska-Susitna Borough |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
5 earthquakes have been recorded within 50 km since this one.
- 1.6 14 km WSW of Anchorage, Alaska
- 1.8 11 km SE of Tyonek, Alaska
- 2.1 9 km W of Point MacKenzie, Alaska
- 2.1 8 km NNE of Susitna, Alaska
- 2.0 24 km SSW of Anchorage, 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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| reported intensity | not reported | 2 | |
| felt reports | not reported | 1 |
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.