278 km W of Port Orford, Oregon

2022-09-13 23:56 UTC · 10 km deep · released about 340 lb of TNT

Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.

When: 2022-09-13 23:56 UTC
Magnitude: M 2.7 (ml)
Depth: 10 km below the surface
Felt: no reports yet
Status: Reviewed by a seismologist

USGS · last changed by USGS 1409 days ago · we first saw it 1409 days ago

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 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
Magna, Utah 2020 M 5.7 32,000× the energy of this one
Around the size people start to feel M 3.0 2.8× the energy of this one
This earthquake M 2.7 about 340 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

Map loads when it scrolls into view

Epicentre 43.0492, -127.8832. Map © OpenStreetMap contributors.

Aftershocks so far

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

2.9 239 km W of Langlois, Oregon 01:47 UTC
3.4 285 km W of Bandon, Oregon 06:29 UTC
3.1 262 km W of Bandon, Oregon 17:20 UTC
4.0 off the coast of Oregon 08:31 UTC
2.8 265 km W of Langlois, Oregon 06:43 UTC
2.7 238 km W of Langlois, Oregon 18:47 UTC
3.4 275 km W of Langlois, Oregon 23:19 UTC
2.5 282 km W of Langlois, Oregon 11:56 UTC
2.9 277 km W of Langlois, Oregon 10:02 UTC
2.5 236 km W of Port Orford, Oregon 03:08 UTC
2.6 253 km W of Langlois, Oregon 13:43 UTC
2.9 246 km W of Langlois, Oregon 01:17 UTC
2.9 257 km W of Bandon, Oregon 07:42 UTC
3.4 271 km W of Bandon, Oregon 08:47 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 16:42 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

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.