QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

14km N of Cloverdale, CA

· 4.4 km deep · released about 860 lb of TNT

10 km30 km60 km120 km N Lake County 32 kmSonoma County 46 kmMendocino County 66 kmColusa County 74 kmNapa County 77 kmGlenn County 93 kmMarin County 101 kmYolo County 102 kmSutter County 116 km
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
4.4 km below the surface
Felt
43 reports · strongest reported intensity III
Nearest
Lake County, 32 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1622 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 43 people have reported feeling it to USGS.

How big was it?

This earthquake released about 860 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 6.7 390,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 860 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 38.9293, -123.0352. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lake County, CA 32 km (20 mi) SW of here earthquakes near Lake County
Sonoma County, CA 46 km (29 mi) NNW of here earthquakes near Sonoma County
Mendocino County, CA 66 km (41 mi) SSE of here earthquakes near Mendocino County
Colusa County, CA 74 km (46 mi) WSW of here earthquakes near Colusa County
Napa County, CA 77 km (48 mi) NW of here earthquakes near Napa County
Glenn County, CA 93 km (58 mi) SW of here earthquakes near Glenn County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

  1. 1.7 6km NW of The Geysers, CA
  2. 1.5 2km WSW of Anderson Springs, CA
  3. 1.5 1km NNW of The Geysers, CA
  4. 1.5 2km N of The Geysers, CA
  5. 1.9 8km NW of The Geysers, CA
  6. 1.9 10km SSE of Talmage, CA
  7. 2.1 10km SSE of Talmage, CA
  8. 1.6 12km WNW of Redwood Valley, CA
  9. 1.6 1km NNW of The Geysers, CA
  10. 1.9 7km NW of The Geysers, CA
  11. 1.6 7km NW of The Geysers, CA
  12. 1.7 18km SE of Lake Pillsbury, CA
  13. 2.0 3km SSW of Anderson Springs, CA
  14. 2.9 2km SW of Anderson Springs, CA
  15. 1.8 6km W of Cobb, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.1 on 2016-08-10 — it released about 1,500 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.