QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

19km ENE of Clearlake Oaks, CA

· 22 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Colusa County 22 kmLake County 25 kmGlenn County 58 kmNapa County 65 kmSutter County 65 kmYolo County 66 kmSonoma County 74 kmMendocino County 93 kmButte County 98 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 1.6 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Colusa County, 22 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1369 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 39.0797, -122.4595. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Colusa County, CA 22 km (14 mi) WSW of here earthquakes near Colusa County
Lake County, CA 25 km (15 mi) E of here earthquakes near Lake County
Glenn County, CA 58 km (36 mi) S of here earthquakes near Glenn County
Napa County, CA 65 km (40 mi) N of here earthquakes near Napa County
Sutter County, CA 65 km (41 mi) W of here earthquakes near Sutter County
Yolo County, CA 66 km (41 mi) NW of here earthquakes near Yolo County

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

Aftershocks so far

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

  1. 2.1 3km WSW of Anderson Springs, CA
  2. 2.1 6km WNW of Cobb, CA
  3. 2.0 10km WNW of The Geysers, CA
  4. 1.7 2km NW of The Geysers, CA
  5. 1.8 2km NW of The Geysers, CA
  6. 1.5 4km NW of The Geysers, CA
  7. 1.8 7km NW of The Geysers, CA
  8. 1.8 8km NW of The Geysers, CA
  9. 1.5 2km W of Anderson Springs, CA
  10. 2.6 3km W of Cobb, CA
  11. 1.7 6km NNW of The Geysers, CA
  12. 1.6 2km N of The Geysers, CA
  13. 1.6 2km SW of Cobb, CA
  14. 2.7 1km NNW of The Geysers, CA
  15. 1.7 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 170,000 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.