QuakeIndex

Earthquake · reviewed by a seismologist

M 4.9mww

151 km WSW of Pistol River, Oregon

· 10 km deep · released about 340 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N
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 4.9 (mww)
Depth
10 km below the surface
Felt
40 reports · strongest reported intensity III
Tsunami
USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 279 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 40 people have reported feeling it to USGS.

How big was it?

This earthquake released about 340 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.9 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 500× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 22× the energy of this one
  3. Magna, Utah 2020 M 5.7 16× the energy of this one
  4. This earthquake M 4.9 about 340 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 710× 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 41.8428, -126.1354. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 2.7 off the coast of Oregon
  2. 2.9 143 km W of Gold Beach, Oregon
  3. 2.9 147 km W of Gold Beach, Oregon
  4. 2.8 150 km W of Gold Beach, Oregon
  5. 4.2 148 km W of Gold Beach, Oregon
  6. 5.9 149 km W of Gold Beach, Oregon
  7. 3.9 164 km W of Gold Beach, Oregon
  8. 2.8 128 km WSW of Pistol River, Oregon
  9. 2.9 140km WSW of Gold Beach, OR
  10. 3.0 178 km W of Gold Beach, Oregon
  11. 3.1 186 km WSW of Pistol River, Oregon
  12. 3.0 168 km WSW of Brookings, Oregon
  13. 3.7 139 km WSW of Pistol River, Oregon
  14. 2.1 131 km WSW of Pistol River, Oregon
  15. 3.1 129km W of Crescent City, CA

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.