219 km WSW of Adak, Alaska

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
3. Around the size people start to feel M 3.0 16× the energy of this one
4. This earthquake M 2.2 about 60 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 51.1515, -179.5784. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 2.1 212 km W of Adak, Alaska 22:11 UTC
2. 2.4 212 km WSW of Adak, Alaska 16:08 UTC
3. 3.1 207 km WSW of Adak, Alaska 08:39 UTC
4. 2.2 183 km WSW of Adak, Alaska 04:58 UTC
5. 3.9 245 km WSW of Adak, Alaska 04:05 UTC
6. 2.2 193 km WSW of Adak, Alaska 14:29 UTC
7. 2.7 228 km WSW of Adak, Alaska 05:45 UTC
8. 2.0 238 km WSW of Adak, Alaska 05:28 UTC
9. 2.0 239 km WSW of Adak, Alaska 20:48 UTC
10. 2.2 227 km WSW of Adak, Alaska 18:21 UTC
11. 2.1 236 km WSW of Adak, Alaska 17:23 UTC
12. 4.5 188 km WSW of Adak, Alaska 15:22 UTC
13. 2.3 237 km WSW of Adak, Alaska 13:57 UTC
14. 2.2 200 km W of Adak, Alaska 13:19 UTC
15. 2.2 204 km WSW of Adak, Alaska 01:46 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 05:56 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 6.1 on 2020-01-26 — it released about 710,000 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.