45 km WSW of Anchor Point, 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 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.

1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
3. Around the size people start to feel M 3.0 4× the energy of this one
4. 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.

Where

Epicentre 59.6145, -152.5818. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 1.6 54 km W of Nanwalek, Alaska 13:47 UTC
2. 1.8 47 km WNW of Nanwalek, Alaska 15:00 UTC
3. 1.8 40 km W of Anchor Point, Alaska 20:03 UTC
4. 1.5 29 km W of Happy Valley, Alaska 13:21 UTC
5. 1.5 59 km WNW of Nanwalek, Alaska 10:23 UTC
6. 1.7 58 km W of Anchor Point, Alaska 08:50 UTC
7. 1.8 12 km WSW of Nanwalek, Alaska 11:44 UTC
8. 1.7 48 km W of Nanwalek, Alaska 23:42 UTC
9. 3.5 50 km WNW of Happy Valley, Alaska 02:20 UTC
10. 1.5 57 km WNW of Nanwalek, Alaska 17:45 UTC
11. 1.5 34 km WNW of Nanwalek, Alaska 10:45 UTC
12. 1.7 62 km E of Pedro Bay, Alaska 09:15 UTC
13. 1.8 55 km WNW of Anchor Point, Alaska 01:39 UTC
14. 1.9 17 km W of Anchor Point, Alaska 17:41 UTC
15. 1.8 50 km WSW of Anchor Point, Alaska 21:42 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 15:50 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 5.6 on 2017-03-02 — it released about 32,000 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.