QuakeIndex

Earthquake · reviewed by a seismologist

M 4.0mwr

275 km WNW of Bandon, Oregon

Yes. A magnitude 4.0 earthquake was recorded 275 km WNW of Bandon, Oregon at 15:36 UTC on 2024-06-01, 5.5 km deep. 1 person has reported feeling it to USGS.

· 5.5 km deep · released about 15 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 4.0 (mwr)
Depth
5.5 km below the surface
Felt
1 report · strongest reported intensity I
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 829 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

At this magnitude and depth, people at rest would likely notice it out to about 97 km (60 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 15 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 11,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 500× the energy of this one
  3. Magna, Utah 2020 M 5.7 350× the energy of this one
  4. This earthquake M 4.0 about 15 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 32× 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.

For this area

The largest earthquake within 50 km since 2016 was M 6.3 on 2019-08-29 — about 2,800 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 43.6600, -127.7253. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 5.3 off the coast of Oregon
  2. 3.9 off the coast of Oregon
  3. 2.8 237 km W of Bandon, Oregon
  4. 3.8 265 km WNW of Barview, Oregon
  5. 4.0 241 km W of Bandon, Oregon
  6. 3.6 260 km WNW of Bandon, Oregon
  7. 3.6 261 km WNW of Bandon, Oregon
  8. 3.1 296 km W of Bandon, Oregon
  9. 3.0 265 km WNW of Bandon, Oregon
  10. 3.3 293 km WNW of Bandon, Oregon
  11. 3.1 274 km W of Bandon, Oregon
  12. 3.5 255 km WNW of Barview, Oregon
  13. 2.9 258 km WNW of Bandon, Oregon
  14. 3.0 266 km WNW of Bandon, Oregon
  15. 2.8 283 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.

On USGS

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