QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

off the coast of Oregon

· 10 km deep · released about 480 lb of TNT

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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
Magnitude
M 2.8 (ml)
Depth
10 km below the surface
Felt
1 report · strongest reported intensity II
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1094 days ago

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 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 43.6501, -127.7780. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 3.3 293 km WNW of Bandon, Oregon
  2. 3.1 274 km W of Bandon, Oregon
  3. 4.3 off the coast of Oregon
  4. 3.5 255 km WNW of Barview, Oregon
  5. 3.5 off the coast of Oregon
  6. 2.9 258 km WNW of Bandon, Oregon
  7. 3.0 266 km WNW of Bandon, Oregon
  8. 2.8 283 km W of Bandon, Oregon
  9. 3.4 285 km W of Bandon, Oregon
  10. 3.1 282 km W of Bandon, Oregon
  11. 6.0 off the coast of Oregon
  12. 3.9 249 km W of Bandon, Oregon
  13. 4.7 273 km WNW of Bandon, Oregon
  14. 3.0 276 km WNW of Bandon, Oregon
  15. 3.1 262 km W of Bandon, Oregon

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . 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 6.3 on 2019-08-29 — it released about 180,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.