QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

10km ENE of Clearlake, CA

· 2.9 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lake County 24 kmColusa County 32 kmNapa County 56 kmSonoma County 63 kmYolo County 63 kmGlenn County 69 kmSutter County 70 kmMendocino County 94 kmSolano County 95 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 1.5 (md)
Depth
2.9 km below the surface
Felt
no reports yet
Nearest
Lake County, 24 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1976 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 38.9920, -122.5142. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lake County, CA 24 km (15 mi) ESE of here earthquakes near Lake County
Colusa County, CA 32 km (20 mi) SW of here earthquakes near Colusa County
Napa County, CA 56 km (35 mi) NNW of here earthquakes near Napa County
Sonoma County, CA 63 km (39 mi) NE of here earthquakes near Sonoma County
Yolo County, CA 63 km (39 mi) WNW of here earthquakes near Yolo County
Glenn County, CA 69 km (43 mi) S of here earthquakes near Glenn County

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

Aftershocks so far

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

  1. 1.9 8km WNW of Cobb, CA
  2. 1.8 4km NW of The Geysers, CA
  3. 1.9 11km WNW of The Geysers, CA
  4. 1.5 13km ESE of Hidden Valley Lake, CA
  5. 2.1 7km WNW of Cobb, CA
  6. 1.5 14km E of Lower Lake, CA
  7. 2.0 6km NW of The Geysers, CA
  8. 1.7 6km NW of The Geysers, CA
  9. 1.7 6km NW of The Geysers, CA
  10. 1.8 3km NE of The Geysers, CA
  11. 1.7 14km NNE of Angwin, CA
  12. 1.6 15km NNE of Angwin, CA
  13. 2.0 15km NNE of Angwin, CA
  14. 2.2 15km NNE of Angwin, CA
  15. 1.6 10km WNW of The Geysers, 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 220,000 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.