QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

11km N of Pinnacles, CA

· 9.9 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 7 kmMonterey County 46 kmMerced County 74 kmSanta Clara County 81 kmSanta Cruz County 86 kmStanislaus County 104 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
9.9 km below the surface
Felt
1 report
Nearest
San Benito County, 7 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1447 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 5.4 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 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 36.6332, -121.1617. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 7 km (4 mi) WNW of here earthquakes near San Benito County
Monterey County, CA 46 km (28 mi) NNE of here earthquakes near Monterey County
Merced County, CA 74 km (46 mi) SSW of here earthquakes near Merced County
Santa Clara County, CA 81 km (50 mi) SE of here earthquakes near Santa Clara County
Santa Cruz County, CA 86 km (54 mi) ESE of here earthquakes near Santa Cruz County
Stanislaus County, CA 104 km (65 mi) S of here earthquakes near Stanislaus County

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

Aftershocks so far

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

  1. 2.2 3km SSW of San Juan Bautista, CA
  2. 1.9 11km SE of Pinnacles, CA
  3. 1.7 7km NNW of Pinnacles, CA
  4. 1.6 4km NNE of Pinnacles, CA
  5. 2.8 14km NW of Pinnacles, CA
  6. 1.9 6km E of Tres Pinos, CA
  7. 1.9 14km NNE of Pinnacles, CA
  8. 1.9 6km NNW of Pinnacles, CA
  9. 2.3 6km NNW of Pinnacles, CA
  10. 2.5 11km S of Tres Pinos, CA
  11. 1.8 8km NNE of Pinnacles, CA
  12. 1.5 11km SE of Pinnacles, CA
  13. 1.8 2km ENE of Aromas, CA
  14. 1.8 4km NNW of Pinnacles, CA
  15. 1.8 4km W of San Juan Bautista, 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 65,000 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.