182 km WSW of Port Orford, Oregon

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 170 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.7 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 1,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 45× the energy of this one
3. Magna, Utah 2020 M 5.7 32× the energy of this one
4. This earthquake M 4.7 about 170 tons of TNT
5. Around the size people start to feel M 3.0 this one released 350× 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 42.3740, -126.6594. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 3.5 156 km W of Port Orford, Oregon 01:19 UTC
2. 3.5 155 km W of Pistol River, Oregon 05:27 UTC
3. 2.7 175 km WSW of Port Orford, Oregon 06:56 UTC
4. 2.6 160 km W of Port Orford, Oregon 16:36 UTC
5. 2.7 138 km WSW of Port Orford, Oregon 12:05 UTC
6. 3.0 146 km WSW of Port Orford, Oregon 19:02 UTC
7. 2.8 177 km WSW of Port Orford, Oregon 11:55 UTC
8. 3.0 186 km WSW of Port Orford, Oregon 13:25 UTC
9. 2.6 159 km WSW of Port Orford, Oregon 23:13 UTC
10. 2.9 178 km W of Port Orford, Oregon 12:40 UTC
11. 2.5 185 km W of Gold Beach, Oregon 04:44 UTC
12. 2.5 184 km WSW of Port Orford, Oregon 12:00 UTC
13. 2.6 221 km WSW of Port Orford, Oregon 00:57 UTC
14. 2.7 164 km WSW of Port Orford, Oregon 22:34 UTC
15. 5.1 173 km WSW of Port Orford, Oregon 19:31 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 20:17 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 5.9 on 2021-06-04 — it released about 63 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.