QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

23km ENE of San Ardo, CA

· 6.6 km deep · released about 7.1 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Monterey County 61 kmSan Benito County 69 kmKings County 76 kmSan Luis Obispo County 81 kmFresno County 117 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 1.6 (md)
Depth
6.6 km below the surface
Felt
no reports yet
Nearest
Monterey County, 61 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2447 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 7.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.1 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 36.0953, -120.6648. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Monterey County, CA 61 km (38 mi) ESE of here earthquakes near Monterey County
San Benito County, CA 69 km (43 mi) SSE of here earthquakes near San Benito County
Kings County, CA 76 km (47 mi) W of here earthquakes near Kings County
San Luis Obispo County, CA 81 km (50 mi) NNW of here earthquakes near San Luis Obispo County
Fresno County, CA 117 km (73 mi) SW of here earthquakes near Fresno County

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

Aftershocks so far

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

  1. 1.8 7km NW of Parkfield, CA
  2. 2.2 12km NE of New Idria, CA
  3. 2.4 10km NNE of New Idria, CA
  4. 1.7 11km WSW of Huron, CA
  5. 1.8 12km SW of Huron, CA
  6. 4.0 10km NNE of New Idria, CA
  7. 2.4 22km ENE of San Lucas, CA
  8. 1.7 6km W of San Ardo, CA
  9. 2.5 20km NNW of Coalinga, CA
  10. 1.7 15km NW of New Idria, CA
  11. 2.5 4km ENE of New Idria, CA
  12. 1.6 16km NW of New Idria, CA
  13. 1.7 20km SE of Pinnacles, CA
  14. 2.3 20km SSW of Cantua Creek, CA
  15. 1.6 12km S of San Lucas, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2019-12-17 — it released about 12,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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