QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

2km SE of San Ardo, CA

· 11 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Monterey County 46 kmSan Benito County 70 kmSan Luis Obispo County 79 kmKings County 97 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 2.5 (md)
Depth
11 km below the surface
Felt
2 reports · strongest reported intensity I
Nearest
Monterey County, 46 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1937 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 36.0023, -120.8900. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Monterey County, CA 46 km (29 mi) SE of here earthquakes near Monterey County
San Benito County, CA 70 km (43 mi) SSE of here earthquakes near San Benito County
San Luis Obispo County, CA 79 km (49 mi) NNW of here earthquakes near San Luis Obispo County
Kings County, CA 97 km (60 mi) W of here earthquakes near Kings County
Fresno County, CA 139 km (86 mi) SW of here earthquakes near Fresno County
Santa Cruz County, CA 150 km (93 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

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

  1. 2.3 9km SSW of San Lucas, CA
  2. 2.3 19km NW of Parkfield, CA
  3. 2.6 12km NW of Parkfield, CA
  4. 1.9 7km WNW of Paso Robles, CA
  5. 2.8 22km ENE of San Lucas, CA
  6. 2.4 11km SSW of Lake Nacimiento, CA
  7. 3.1 8km NW of Parkfield, CA
  8. 3.1 9km NW of Parkfield, CA
  9. 2.3 6km NW of Parkfield, CA
  10. 1.8 6km ESE of San Lucas, CA
  11. 1.9 12km W of Templeton, CA
  12. 1.7 25km SE of Lopez Point, CA
  13. 2.2 23km SW of New Idria, CA
  14. 2.0 7km NE of San Simeon, CA
  15. 1.6 10km NW of Parkfield, 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.