QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

6 km SSW of Nicolaus, California

· 7.0 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sutter County 23 kmYolo County 33 kmSacramento County 50 kmYuba County 51 kmColusa County 66 kmSolano County 71 kmNapa County 74 kmPlacer County 79 kmNevada County 87 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 1.7 (md)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Sutter County, 23 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3364 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 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 92× the energy of this one
  4. This earthquake M 1.7 about 10 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 38.8512, -121.5983. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sutter County, CA 23 km (14 mi) SSE of here earthquakes near Sutter County
Yolo County, CA 33 km (20 mi) NE of here earthquakes near Yolo County
Sacramento County, CA 50 km (31 mi) NNW of here earthquakes near Sacramento County
Yuba County, CA 51 km (32 mi) SSW of here earthquakes near Yuba County
Colusa County, CA 66 km (41 mi) ESE of here earthquakes near Colusa County
Solano County, CA 71 km (44 mi) NNE of here earthquakes near Solano County

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

Aftershocks so far

44 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. 1.9 7 km E of Arbuckle, CA
  7. 1.6 5 km WSW of Dunnigan, CA
  8. 2.3 6 km NW of Dunnigan, CA
  9. 2.9 10 km NW of Dunnigan, CA
  10. 2.4 9 km SSW of Arbuckle, CA
  11. 2.4 10 km SSW of Arbuckle, CA
  12. 1.8 9 km SSW of Arbuckle, CA
  13. 2.4 4 km SSW of Dunnigan, CA
  14. 2.3 7 km WSW of Dunnigan, CA
  15. 2.1 8 km WSW of Dunnigan, 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.