QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

262 km W of Indianola, California

· 9.6 km deep · released about 950 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 3.0 (ml)
Depth
9.6 km below the surface
Felt
no reports yet
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1702 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 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 41.0893, -127.3060. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 2.9 256 km W of Ferndale, California
  2. 2.8 250 km WSW of Crescent City, California
  3. 2.7 245 km W of Ferndale, California
  4. 3.0 253 km W of Indianola, California
  5. 2.8 231 km W of Ferndale, California
  6. 4.3 244 km W of Ferndale, California
  7. 2.7 245 km W of Ferndale, California
  8. 2.6 243 km W of Crescent City, California
  9. 2.6 243 km WSW of Pistol River, Oregon
  10. 2.9 250 km W of Ferndale, California
  11. 2.9 253 km W of Ferndale, California
  12. 2.9 237 km W of Ferndale, California
  13. 2.8 251 km W of Ferndale, California
  14. 3.4 258 km W of Ferndale, California
  15. 2.9 253 km W of Ferndale, California

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 5.3 on 2020-05-18 — it released about 2,800 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.