QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

23km WSW of New Idria, CA

· 4.8 km deep · released about 9.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 34 kmMonterey County 38 kmMerced County 97 kmKings County 103 kmSan Luis Obispo County 113 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
4.8 km below the surface
Felt
no reports yet
Nearest
San Benito County, 34 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1563 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 9.6 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 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 36.3367, -120.9138. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 34 km (21 mi) SSE of here earthquakes near San Benito County
Monterey County, CA 38 km (23 mi) ENE of here earthquakes near Monterey County
Merced County, CA 97 km (60 mi) S of here earthquakes near Merced County
Kings County, CA 103 km (64 mi) WNW of here earthquakes near Kings County
San Luis Obispo County, CA 113 km (71 mi) NNW of here earthquakes near San Luis Obispo County
Santa Clara County, CA 120 km (75 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

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

  1. 1.8 3km NE of Pinnacles, CA
  2. 1.9 14km SE of Pinnacles, CA
  3. 1.9 19km NNE of Pinnacles, CA
  4. 3.3 14km NNE of Pinnacles, CA
  5. 1.8 7km ESE of Pinnacles, CA
  6. 2.1 8km NNW of Pinnacles, CA
  7. 1.8 21km ENE of San Lucas, CA
  8. 2.8 22km ENE of San Lucas, CA
  9. 1.5 16km SE of Pinnacles, CA
  10. 1.6 8km NNW of Pinnacles, CA
  11. 1.5 16km SE of Pinnacles, CA
  12. 1.7 16km SE of Pinnacles, CA
  13. 1.7 14km SSW of Cantua Creek, CA
  14. 1.6 16km NW of Parkfield, CA
  15. 1.8 15km E 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 4.7 on 2019-10-15 — it released about 36,000 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.