QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

22km NE of San Ardo, CA

· 6.0 km deep · released about 22 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Monterey County 52 kmSan Benito County 58 kmKings County 84 kmSan Luis Obispo County 91 kmMerced County 114 kmFresno County 118 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
6.0 km below the surface
Felt
no reports yet
Nearest
Monterey County, 52 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2320 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 22 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 5.8 680,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 480,000× the energy of this one
  3. Around the size people start to feel M 3.0 43× the energy of this one
  4. This earthquake M 1.9 about 22 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 36.1695, -120.7453. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Monterey County, CA 52 km (32 mi) E of here earthquakes near Monterey County
San Benito County, CA 58 km (36 mi) SSE of here earthquakes near San Benito County
Kings County, CA 84 km (52 mi) W of here earthquakes near Kings County
San Luis Obispo County, CA 91 km (56 mi) NNW of here earthquakes near San Luis Obispo County
Merced County, CA 114 km (71 mi) S of here earthquakes near Merced County
Fresno County, CA 118 km (73 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

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

  1. 1.9 23km ENE of San Ardo, CA
  2. 2.0 23km SE of Pinnacles, CA
  3. 1.8 5km NE of Coalinga, CA
  4. 2.4 16km WNW of Lake Nacimiento, CA
  5. 2.3 5km SSE of Parkfield, CA
  6. 1.7 8km NNE of New Idria, CA
  7. 2.4 9km SE of Pinnacles, CA
  8. 2.1 25km NW of Parkfield, CA
  9. 1.6 7km WNW of San Ardo, CA
  10. 1.9 9km WSW of San Ardo, CA
  11. 2.3 25km NW of Parkfield, CA
  12. 2.2 11km NNE of New Idria, CA
  13. 1.9 11km SE of Pinnacles, CA
  14. 2.7 17km NW of Parkfield, CA
  15. 2.1 23km NE of San Ardo, 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.