QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

9km WNW of New Idria, CA

· 11 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 34 kmMonterey County 54 kmMerced County 84 kmKings County 95 kmFresno County 106 kmSanta Clara 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 1.5 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
San Benito County, 34 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2341 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 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 36.4440, -120.7700. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 34 km (21 mi) ESE of here earthquakes near San Benito County
Monterey County, CA 54 km (33 mi) ENE of here earthquakes near Monterey County
Merced County, CA 84 km (52 mi) S of here earthquakes near Merced County
Kings County, CA 95 km (59 mi) WNW of here earthquakes near Kings County
Fresno County, CA 106 km (66 mi) WSW of here earthquakes near Fresno County
Santa Clara County, CA 119 km (74 mi) SE of here earthquakes near Santa Clara County

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

Aftershocks so far

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

  1. 2.2 3km NNW of Pinnacles, CA
  2. 1.9 22km NNE of San Ardo, CA
  3. 1.8 19km NW of Parkfield, CA
  4. 1.7 5km NNE of Pinnacles, CA
  5. 1.6 16km NW of Pinnacles, CA
  6. 3.5 16km NW of Pinnacles, CA
  7. 1.6 8km NNE of Pinnacles, CA
  8. 2.2 22km NE of San Ardo, CA
  9. 1.6 21km NE of San Ardo, CA
  10. 2.1 7km NNW of Pinnacles, CA
  11. 2.3 6km NNW of Pinnacles, CA
  12. 1.8 6km NNW of Pinnacles, CA
  13. 2.3 10km N of Pinnacles, CA
  14. 2.1 10km N of Pinnacles, CA
  15. 2.0 10km N of Pinnacles, 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 4.6 on 2017-11-13 — it released about 38,000 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.