QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

4km NNE of New Idria, CA

· 13 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 43 kmMonterey County 64 kmMerced County 83 kmKings County 86 kmFresno County 96 kmMadera County 117 kmSan Luis Obispo County 120 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
13 km below the surface
Felt
no reports yet
Nearest
San Benito County, 43 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1566 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 18 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 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 36.4505, -120.6532. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 43 km (26 mi) ESE of here earthquakes near San Benito County
Monterey County, CA 64 km (40 mi) ENE of here earthquakes near Monterey County
Merced County, CA 83 km (52 mi) S of here earthquakes near Merced County
Kings County, CA 86 km (53 mi) WNW of here earthquakes near Kings County
Fresno County, CA 96 km (59 mi) WSW of here earthquakes near Fresno County
Madera County, CA 117 km (72 mi) SW of here earthquakes near Madera County

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

Aftershocks so far

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

  1. 1.9 9km SE of Pinnacles, CA
  2. 1.9 5km N of Pinnacles, CA
  3. 2.5 13km SE of Pinnacles, CA
  4. 2.3 24km NE of Pinnacles, CA
  5. 2.3 16km SE of Pinnacles, CA
  6. 1.6 16km SE of Pinnacles, CA
  7. 2.3 19km WNW of New Idria, CA
  8. 1.5 5km N of Pinnacles, CA
  9. 1.7 23km SE of Pinnacles, CA
  10. 1.9 19km NW of Parkfield, CA
  11. 2.1 11km ENE of New Idria, CA
  12. 1.9 24km ENE of San Ardo, CA
  13. 2.6 22km NE of San Lucas, CA
  14. 1.9 16km SE of Pinnacles, CA
  15. 1.7 4km SW of New Idria, 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 4.0 on 2021-08-31 — it released about 2,000 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.