Earthquake · automatic estimate, may change
M 2.6ml
46 km W of Happy Valley, Alaska
- When
- Magnitude
- M 2.6 (ml)
- Depth
- 100 km below the surface
- Felt
- no reports yet
- Nearest
- Kenai Peninsula Borough, 45 km NNE
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 2 hours ago
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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
- Magna, Utah 2020 M 5.7 45,000× the energy of this one
- Around the size people start to feel M 3.0 4× the energy of this one
- This earthquake M 2.6 about 240 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 5.6 on 2017-03-02 — about 32,000 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 · 40 km NNW of this epicentre
- 6.4 52 km ENE of Pedro Bay, Alaska · 37 km WSW of this epicentre
- 6.2 16 km WNW of Happy Valley, Alaska · 31 km E of this epicentre
- 6.2 70 km E of Port Alsworth, Alaska · 33 km NW of this epicentre
- 6.1 73 km WNW of Ninilchik, Alaska · 47 km NNW 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 59.9770, -152.5590. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kenai Peninsula Borough, AK | 45 km (28 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
1 earthquake has 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 |
|---|---|---|---|
| longitude | -152.56 | -152.56 | |
| latitude | 59.98 | 59.98 | |
| depth | 100.5 | 100.3 | |
| magnitude | 2.5 | 2.6 | |
| location | 47 km WNW of Anchor Point, Alaska | 46 km W of Happy Valley, Alaska | |
| longitude | -152.59 | -152.56 | |
| latitude | 59.97 | 59.98 | |
| depth | 101.2 | 100.5 | |
| location | 48 km WNW of Anchor Point, Alaska | 47 km WNW of Anchor Point, Alaska | |
| longitude | -152.59 | -152.59 | |
| latitude | 59.97 | 59.97 | |
| magnitude | 2.3 | 2.5 |
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.