183 km WSW of Crescent City, California

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 43 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.3 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 4,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 180× the energy of this one
3. Magna, Utah 2020 M 5.7 130× the energy of this one
4. This earthquake M 4.3 about 43 tons of TNT
5. Around the size people start to feel M 3.0 this one released 89× more

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 41.4364, -126.3567. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 2.6 215 km WSW of Pistol River, Oregon 02:13 UTC
2. 2.6 198 km WSW of Pistol River, Oregon 14:50 UTC
3. 2.7 176 km W of Crescent City, California 05:53 UTC
4. 2.9 150 km W of Trinidad, CA 18:50 UTC
5. 2.5 221 km W of Crescent City, California 18:20 UTC
6. 2.6 190 km WSW of Pistol River, Oregon 20:19 UTC
7. 2.6 160 km W of Big Lagoon, California 20:32 UTC
8. 2.8 154 km WSW of Pistol River, Oregon 07:42 UTC
9. 3.6 164 km W of Crescent City, California 17:40 UTC
10. 2.7 170 km WSW of Crescent City, California 01:31 UTC
11. 2.8 166 km WSW of Pistol River, Oregon 17:26 UTC
12. 2.9 144km WNW of Trinidad, CA 14:59 UTC
13. 2.6 157 km WSW of Crescent City, California 10:52 UTC
14. 2.5 152 km WSW of Crescent City, California 02:04 UTC
15. 2.6 161 km WSW of Crescent City, California 15:44 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 17:11 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 4.9 on 2016-09-25 — it released about 7.9 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.