Earthquake · automatic estimate, may change
M 2.7ml
20 km SSW of Skwentna, Alaska
- When
- Magnitude
- M 2.7 (ml)
- Depth
- 80 km below the surface
- Felt
- 1 report · strongest reported intensity III
- Nearest
- Matanuska-Susitna Borough, 115 km ENE
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 1877 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.
How big was it?
This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
- Magna, Utah 2020 M 5.7 32,000× the energy of this one
- Around the size people start to feel M 3.0 2.8× the energy of this one
- This earthquake M 2.7 about 340 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.
Where
Epicentre 61.8134, -151.4901. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Matanuska-Susitna Borough, AK | 115 km (72 mi) | WSW of here | earthquakes near Matanuska-Susitna Borough |
| Anchorage Municipality, AK | 137 km (85 mi) | WNW of here | earthquakes near Anchorage Municipality |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 1.5 46 km SSW of Skwentna, Alaska
- 1.6 13 km SE of Skwentna, Alaska
- 2.6 26 km W of Susitna, Alaska
- 1.8 31 km WSW of Skwentna, Alaska
- 1.6 8 km W of Skwentna, Alaska
- 2.0 17 km WNW of Skwentna, Alaska
- 2.3 4 km NE of Skwentna, Alaska
- 2.7 37 km SSW of Skwentna, Alaska
- 1.6 24 km WNW of Susitna, Alaska
- 1.8 24 km ESE of Skwentna, Alaska
- 1.8 12 km NE of Skwentna, Alaska
- 3.2 21 km ESE of Skwentna, Alaska
- 1.6 41 km SSW of Skwentna, Alaska
- 1.5 30 km SSW of Skwentna, Alaska
- 1.6 23 km W of Skwentna, 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.
For this area
The largest earthquake within 50 km in our catalogue was M 4.5 on 2021-03-03 — it released about 500 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
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.