QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

16km SSE of Tres Pinos, CA

· 4.6 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 17 kmMonterey County 46 kmSanta Clara County 73 kmSanta Cruz County 76 kmMerced County 77 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 1.7 (md)
Depth
4.6 km below the surface
Felt
no reports yet
Nearest
San Benito County, 17 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1265 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 10 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 1,500,000× 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 95× the energy of this one
  4. This earthquake M 1.7 about 10 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 36.6558, -121.2732. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 17 km (11 mi) WNW of here earthquakes near San Benito County
Monterey County, CA 46 km (29 mi) N of here earthquakes near Monterey County
Santa Clara County, CA 73 km (45 mi) SSE of here earthquakes near Santa Clara County
Santa Cruz County, CA 76 km (48 mi) ESE of here earthquakes near Santa Cruz County
Merced County, CA 77 km (48 mi) SW of here earthquakes near Merced County
Stanislaus County, CA 104 km (64 mi) SSW of here earthquakes near Stanislaus County

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

Aftershocks so far

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

  1. 1.7 3km N of Pinnacles, CA
  2. 1.9 1km NNE of Pinnacles, CA
  3. 1.9 2km NNE of Pinnacles, CA
  4. 2.8 2km NNE of Pinnacles, CA
  5. 1.6 11km NNE of Hollister, CA
  6. 2.0 3km WSW of San Juan Bautista, CA
  7. 2.0 3km NNW of Pinnacles, CA
  8. 2.0 2km N of Hollister, CA
  9. 1.7 11km SSW of Ridgemark, CA
  10. 1.7 5km E of Pinnacles, CA
  11. 1.8 8km ENE of Pinnacles, CA
  12. 1.6 11km SSW of Tres Pinos, CA
  13. 1.6 2km E of Aromas, CA
  14. 1.5 2km WSW of San Juan Bautista, CA
  15. 1.9 7km NE 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 4.7 on 2019-10-15 — it released about 35,000 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.