QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

12 km NW of Roseville, CA

· 22 km deep · released about 51 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sutter County 36 kmSacramento County 41 kmYolo County 46 kmYuba County 51 kmPlacer County 65 kmEl Dorado County 75 kmNevada County 77 kmSolano County 77 kmAmador County 77 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 2.1 (md)
Depth
22 km below the surface
Felt
5 reports · strongest reported intensity II
Nearest
Sutter County, 36 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 152 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 51 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 51 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 38.8147, -121.4033. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sutter County, CA 36 km (22 mi) SE of here earthquakes near Sutter County
Sacramento County, CA 41 km (25 mi) N of here earthquakes near Sacramento County
Yolo County, CA 46 km (28 mi) ENE of here earthquakes near Yolo County
Yuba County, CA 51 km (32 mi) S of here earthquakes near Yuba County
Placer County, CA 65 km (40 mi) WSW of here earthquakes near Placer County
El Dorado County, CA 75 km (47 mi) W of here earthquakes near El Dorado County

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

Aftershocks so far

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

  1. 1.8 1 km WSW of Granite Bay, CA
  2. 2.1 2 km WSW of Granite Bay, CA
  3. 2.6 2 km NW of Granite Bay, CA
  4. 2.2 9 km SSW of South Yuba City, CA
  5. 2.4 5 km NE of Dunnigan, CA
  6. 2.5 12 km WSW of Lincoln, CA
  7. 2.3 13 km NNE of Rio Linda, CA
  8. 2.8 11 km WSW of Lincoln, CA
  9. 2.2 13 km WSW of Lincoln, 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.