140 km WNW of Haines Junction, Canada

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 61.2934, -139.8590. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 1.5 151 km E of McCarthy, Alaska 23:37 UTC
2. 1.6 140 km WNW of Haines Junction, Canada 02:22 UTC
3. 1.8 139 km WNW of Haines Junction, Canada 02:19 UTC
4. 3.1 151 km W of Haines Junction, Canada 02:00 UTC
5. 1.8 148 km WNW of Haines Junction, Canada 12:05 UTC
6. 1.8 139 km ESE of McCarthy, Alaska 18:16 UTC
7. 1.6 141 km ESE of McCarthy, Alaska 22:57 UTC
8. 2.1 145 km SSE of Alcan Border, Alaska 16:21 UTC
9. 1.5 153 km WNW of Haines Junction, Canada 04:40 UTC
10. 1.7 140 km WNW of Haines Junction, Canada 08:30 UTC
11. 1.9 120 km WNW of Haines Junction, Canada 07:45 UTC
12. 1.5 134 km W of Haines Junction, Canada 21:11 UTC
13. 1.7 135 km W of Haines Junction, Canada 19:49 UTC
14. 2.8 139 km ESE of McCarthy, Alaska 21:42 UTC
15. 2.2 121 km WNW of Haines Junction, Canada 19:51 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 09:32 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 4.0 on 2017-11-05 — it released about 180 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.