2 km NNE of Petersville, Alaska

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 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
3. Around the size people start to feel M 3.0 5.6× the energy of this one
4. This earthquake M 2.5 about 170 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 62.5144, -150.7492. Map © OpenStreetMap contributors.

Nearby places

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

47 earthquakes have been recorded within 50 km since this one.

1. 1.6 10 km NW of Petersville, Alaska 22:41 UTC
2. 1.7 16 km SW of Petersville, Alaska 08:45 UTC
3. 2.1 46 km N of Petersville, Alaska 22:07 UTC
4. 1.8 37 km NNW of Petersville, Alaska 11:03 UTC
5. 1.5 48 km NNE of Petersville, Alaska 03:54 UTC
6. 1.6 34 km NNW of Chase, Alaska 23:39 UTC
7. 1.8 8 km ESE of Petersville, Alaska 05:22 UTC
8. 1.7 45 km N of Petersville, Alaska 14:04 UTC
9. 2.4 28 km WSW of Trapper Creek, Alaska 06:57 UTC
10. 2.2 33 km ENE of Skwentna, Alaska 22:34 UTC
11. 1.6 29 km SSW of Petersville, Alaska 04:04 UTC
12. 1.5 28 km WNW of Petersville, Alaska 06:58 UTC
13. 1.9 34 km NNE of Petersville, Alaska 15:07 UTC
14. 1.9 43 km NNW of Petersville, Alaska 14:34 UTC
15. 1.5 17 km WNW of Petersville, Alaska 20:46 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 14:08 UTC. 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 2016-01-18 — it released about 1,000 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.