Earthquake · automatic estimate, may change
M 3.0ml
50 km WNW of Ninilchik, Alaska
- When
- Magnitude
- M 3.0 (ml)
- Depth
- 105 km below the surface
- Felt
- no reports yet
- Nearest
- Kenai Peninsula Borough, 17 km NNE
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 2 hours ago
A magnitude 3.0 earthquake was recorded 50 km WNW of Ninilchik, Alaska at 11:06 UTC on 2026-10-05. This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
How big was it?
This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 350,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
- Magna, Utah 2020 M 5.7 11,000× the energy of this one
- This earthquake M 3.0 about 950 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 5.1 on 2022-01-21 — about 1,400 times the energy of this one.
Before 2016, the USGS record lists 23 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 75 km WNW of Ninilchik, Alaska · 26 km W of this epicentre
- 6.2 16 km WNW of Happy Valley, Alaska · 38 km SE of this epicentre
- 6.2 70 km E of Port Alsworth, Alaska · 33 km WSW of this epicentre
- 6.1 73 km WNW of Ninilchik, Alaska · 24 km NW of this epicentre
- 5.9 66 km ENE of Pedro Bay, Alaska · 38 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 60.2410, -152.4920. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kenai Peninsula Borough, AK | 17 km (10 mi) | NNE | earthquakes near Kenai Peninsula Borough |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
2 earthquakes have been recorded within 50 km since this one.
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 |
|---|---|---|---|
| magnitude | 2.9 | 3 | |
| location | 51 km WNW of Ninilchik, Alaska | 50 km WNW of Ninilchik, Alaska | |
| longitude | -152.52 | -152.49 | |
| latitude | 60.24 | 60.24 | |
| depth | 104.3 | 104.7 | |
| magnitude | 2.7 | 2.9 | |
| location | 53 km WNW of Ninilchik, Alaska | 51 km WNW of Ninilchik, Alaska | |
| longitude | -152.54 | -152.52 | |
| latitude | 60.25 | 60.24 | |
| depth | 105.7 | 104.3 | |
| magnitude | 2.2 | 2.7 |
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.