QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

14km SSE of New Idria, CA

· 15 km deep · released about 24 lb of TNT

10 km30 km60 km120 km N San Benito County 56 kmMonterey County 65 kmKings County 75 kmFresno County 99 kmMerced County 100 kmSan Luis Obispo County 102 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
15 km below the surface
Felt
no reports yet
Nearest
San Benito County, 56 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1256 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 24 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 5.8 640,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 450,000× the energy of this one
  3. Around the size people start to feel M 3.0 40× the energy of this one
  4. This earthquake M 1.9 about 24 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 36.3013, -120.5980. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 56 km (35 mi) SE of here earthquakes near San Benito County
Monterey County, CA 65 km (40 mi) E of here earthquakes near Monterey County
Kings County, CA 75 km (46 mi) WNW of here earthquakes near Kings County
Fresno County, CA 99 km (61 mi) WSW of here earthquakes near Fresno County
Merced County, CA 100 km (62 mi) S of here earthquakes near Merced County
San Luis Obispo County, CA 102 km (64 mi) N of here earthquakes near San Luis Obispo County

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

Aftershocks so far

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

  1. 2.1 23km NNE of San Lucas, CA
  2. 1.6 16km NW of Parkfield, CA
  3. 1.8 24km NNW of New Idria, CA
  4. 1.8 6km N of Avenal, CA
  5. 1.6 2km NNE of New Idria, CA
  6. 1.7 6km W of San Ardo, CA
  7. 1.8 25km E of San Ardo, CA
  8. 1.6 12km NW of Avenal, CA
  9. 2.0 23km NW of New Idria, CA
  10. 1.5 18km SE of New Idria, CA
  11. 1.6 6km WSW of New Idria, CA
  12. 1.8 23km NE of King City, CA
  13. 1.5 4km SW of New Idria, CA
  14. 1.6 12km SE of Pinnacles, CA
  15. 1.9 20km 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 2018-11-27 — it released about 1,300 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.