QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5mb

252 km W of Bandon, Oregon

· 10 km deep · released about 2.7 tons 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 3.5 (mb)
Depth
10 km below the surface
Felt
1 report · strongest reported intensity III
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 806 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 2.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 63,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,000× the energy of this one
  4. This earthquake M 3.5 about 2.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.6× 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 43.5299, -127.4720. Map © OpenStreetMap contributors.

Aftershocks so far

58 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. 3.5 255 km WNW of Barview, Oregon
  4. 2.9 258 km WNW of Bandon, Oregon
  5. 3.0 266 km WNW of Bandon, Oregon
  6. 2.8 283 km W of Bandon, Oregon
  7. 3.4 285 km W of Bandon, Oregon
  8. 3.1 282 km W of Bandon, Oregon
  9. 3.9 249 km W of Bandon, Oregon
  10. 4.7 273 km WNW of Bandon, Oregon
  11. 3.2 232 km W of Bandon, Oregon
  12. 3.0 276 km WNW of Bandon, Oregon
  13. 3.2 231 km WNW of Bandon, Oregon
  14. 3.1 262 km W of Bandon, Oregon
  15. 3.2 211 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 16,000 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.