QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

22km NE of San Lucas, CA

· 7.2 km deep · released about 1.4 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Monterey County 44 kmSan Benito County 47 kmKings County 92 kmSan Luis Obispo County 101 kmMerced County 106 kmFresno County 119 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 3.3 (ml)
Depth
7.2 km below the surface
Felt
10 reports · strongest reported intensity III
Nearest
Monterey County, 44 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2381 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 120,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,800× the energy of this one
  4. This earthquake M 3.3 about 1.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.9× 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 36.2487, -120.8207. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Monterey County, CA 44 km (28 mi) E of here earthquakes near Monterey County
San Benito County, CA 47 km (29 mi) SSE of here earthquakes near San Benito County
Kings County, CA 92 km (57 mi) WNW of here earthquakes near Kings County
San Luis Obispo County, CA 101 km (63 mi) NNW of here earthquakes near San Luis Obispo County
Merced County, CA 106 km (66 mi) S of here earthquakes near Merced County
Fresno County, CA 119 km (74 mi) WSW of here earthquakes near Fresno County

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

Aftershocks so far

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

  1. 1.6 7km NW of Parkfield, CA
  2. 2.9 7km NW of Parkfield, CA
  3. 2.5 7km NW of Parkfield, CA
  4. 2.1 2km NNE of Pinnacles, CA
  5. 2.0 5km NNW of Pinnacles, CA
  6. 1.6 12km SE of Pinnacles, CA
  7. 1.6 22km ENE of San Lucas, CA
  8. 1.7 4km NNW of Pinnacles, CA
  9. 2.4 21km NW of Parkfield, CA
  10. 1.6 19km NW of Parkfield, CA
  11. 1.8 5km NE of Pinnacles, CA
  12. 1.7 15km NW of New Idria, CA
  13. 1.5 9km SSW of San Ardo, CA
  14. 1.8 6km N of Pinnacles, CA
  15. 1.8 24km WSW of New Idria, 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.