192 km W of Langlois, Oregon

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 130,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
4. This earthquake M 3.3 about 1.3 tons of TNT
5. Around the size people start to feel M 3.0 this one released 2.8× 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 43.1923, -126.7828. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 3.1 194 km WNW of Bandon, Oregon 08:08 UTC
2. 2.8 148 km WNW of Port Orford, Oregon 05:34 UTC
3. 2.6 199 km WNW of Bandon, Oregon 13:04 UTC
4. 2.7 204 km WNW of Bandon, Oregon 12:56 UTC
5. 2.6 189 km WNW of Bandon, Oregon 12:48 UTC
6. 3.7 161 km W of Langlois, Oregon 02:39 UTC
7. 3.9 206 km W of Langlois, Oregon 22:53 UTC
8. 2.5 223 km W of Langlois, Oregon 22:10 UTC
9. 2.6 170 km WNW of Port Orford, Oregon 20:10 UTC
10. 3.4 195 km W of Langlois, Oregon 14:20 UTC
11. 4.2 194 km W of Langlois, Oregon 07:42 UTC
12. 3.0 183 km W of Langlois, Oregon 02:13 UTC
13. 2.8 161 km W of Langlois, Oregon 02:13 UTC
14. 2.7 191 km W of Bandon, Oregon 14:05 UTC
15. 3.7 210 km W of Bandon, Oregon 01:58 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 15:03 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 5.7 on 2020-12-29 — it released about 4,000 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.