QuakeIndex

Earthquake · reviewed by a seismologist

M 4.3ml

4km N of Santa Rosa, CA

· 5.6 km deep · released about 41 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sonoma County 20 kmNapa County 33 kmMarin County 48 kmLake County 70 kmSolano County 71 kmYolo County 73 kmColusa County 87 kmSan Francisco County 89 kmContra Costa County 91 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 4.3 (ml)
Depth
5.6 km below the surface
Felt
277 reports · strongest reported intensity V
Measured shaking
intensity V (ShakeMap)
USGS impact alert
green
Nearest
Sonoma County, 20 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 888 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 277 people have reported feeling it to USGS.

How big was it?

This earthquake released about 41 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 4,100× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 180× the energy of this one
  3. Magna, Utah 2020 M 5.7 130× the energy of this one
  4. This earthquake M 4.3 about 41 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 86× 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 38.4813, -122.7037. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sonoma County, CA 20 km (12 mi) ESE of here earthquakes near Sonoma County
Napa County, CA 33 km (21 mi) W of here earthquakes near Napa County
Marin County, CA 48 km (30 mi) N of here earthquakes near Marin County
Lake County, CA 70 km (43 mi) S of here earthquakes near Lake County
Solano County, CA 71 km (44 mi) WNW of here earthquakes near Solano County
Yolo County, CA 73 km (45 mi) WSW 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. 1.6 10km NNE of Healdsburg, CA
  2. 1.7 6km NW of The Geysers, CA
  3. 2.1 2km SW of Anderson Springs, CA
  4. 1.7 2km WSW of Anderson Springs, CA
  5. 3.1 2km WSW of Anderson Springs, CA
  6. 1.8 4km SSE of The Geysers, CA
  7. 1.5 8km NW of The Geysers, CA
  8. 1.5 3km SE of The Geysers, CA
  9. 1.7 5km WNW of Cobb, CA
  10. 1.7 5km WNW of Cobb, CA
  11. 1.5 10km WNW of The Geysers, CA
  12. 1.6 2km NW of The Geysers, CA
  13. 1.6 2km NW of The Geysers, CA
  14. 1.7 13km NW of The Geysers, CA
  15. 1.7 3km 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 5.0 on 2016-12-14 — it released about 12 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.