QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

5km N of Lake Wildwood, CA

· 0.8 km deep · released about 24 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yuba County 12 kmNevada County 37 kmPlacer County 48 kmSutter County 51 kmButte County 55 kmSierra County 67 kmEl Dorado County 79 kmPlumas County 86 kmYolo County 90 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 1.9 (md)
Depth
0.8 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Yuba County, 12 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1846 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 24 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 450,000× the energy of this one
  3. Around the size people start to feel M 3.0 40× the energy of this one
  4. This earthquake M 1.9 about 24 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 39.2750, -121.2025. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yuba County, CA 12 km (8 mi) E of here earthquakes near Yuba County
Nevada County, CA 37 km (23 mi) W of here earthquakes near Nevada County
Placer County, CA 48 km (30 mi) WNW of here earthquakes near Placer County
Sutter County, CA 51 km (32 mi) ENE of here earthquakes near Sutter County
Butte County, CA 55 km (34 mi) SE of here earthquakes near Butte County
Sierra County, CA 67 km (42 mi) WSW of here earthquakes near Sierra County

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

Aftershocks so far

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

  1. 2.0 6 km E of Challenge-Brownsville, CA
  2. 2.1 8 km WNW of La Porte, CA
  3. 2.1 7 km ESE of Challenge-Brownsville, CA
  4. 2.2 9 km SSW of South Yuba City, CA
  5. 1.8 8 km NNE of Oroville East, CA
  6. 1.7 8 km NNE of Oroville East, CA
  7. 2.1 12 km W of La Porte, CA
  8. 2.1 10km N of Oroville, CA
  9. 2.0 5km SSE of Oroville East, CA
  10. 4.2 5km S of Oroville East, CA
  11. 1.8 10km N of Oroville, CA
  12. 2.0 10km N of Oroville, CA
  13. 2.0 9km N of Oroville, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.