QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

3 km W of San Ardo, California

· 11 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Monterey County 42 kmSan Benito County 67 kmSan Luis Obispo County 83 kmKings County 101 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
11 km below the surface
Felt
no reports yet
Nearest
Monterey County, 42 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3264 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 9.3 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 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 36.0190, -120.9403. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Monterey County, CA 42 km (26 mi) SE of here earthquakes near Monterey County
San Benito County, CA 67 km (42 mi) S of here earthquakes near San Benito County
San Luis Obispo County, CA 83 km (52 mi) NNW of here earthquakes near San Luis Obispo County
Kings County, CA 101 km (63 mi) W of here earthquakes near Kings County
Fresno County, CA 142 km (88 mi) SW of here earthquakes near Fresno County
Santa Cruz County, CA 146 km (91 mi) SE of here earthquakes near Santa Cruz County

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

Aftershocks so far

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

  1. 1.9 20km SE of Pinnacles, CA
  2. 1.7 20km NW of Parkfield, CA
  3. 1.5 14km W of Lake Nacimiento, CA
  4. 1.8 22km ENE of San Ardo, CA
  5. 1.8 4km SSE of San Ardo, CA
  6. 1.8 14km NE of San Simeon, CA
  7. 1.6 16km SE of Pinnacles, CA
  8. 1.9 13km SE of Pinnacles, CA
  9. 2.2 15km W of Lake Nacimiento, CA
  10. 1.6 15km SE of Pinnacles, CA
  11. 1.6 8km ENE of San Simeon, CA
  12. 1.6 24km SE of Pinnacles, CA
  13. 2.4 2 km NW of Parkfield, California
  14. 2.7 2 km WNW of Parkfield, California
  15. 2.0 12km NE of San Simeon, 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.