QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

27km NE of Hollister, CA

· 3.0 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Clara County 47 kmMerced County 47 kmSan Benito County 49 kmStanislaus County 61 kmSanta Cruz County 71 kmMonterey County 90 kmAlameda County 91 kmSan Joaquin County 99 kmSan Mateo County 111 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
3.0 km below the surface
Felt
no reports yet
Nearest
Santa Clara County, 47 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1679 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 37.0432, -121.2137. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Clara County, CA 47 km (29 mi) ESE of here earthquakes near Santa Clara County
Merced County, CA 47 km (29 mi) WSW of here earthquakes near Merced County
San Benito County, CA 49 km (31 mi) NNW of here earthquakes near San Benito County
Stanislaus County, CA 61 km (38 mi) SSW of here earthquakes near Stanislaus County
Santa Cruz County, CA 71 km (44 mi) E of here earthquakes near Santa Cruz County
Monterey County, CA 90 km (56 mi) N of here earthquakes near Monterey County

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

Aftershocks so far

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

  1. 1.7 7km WSW of Gilroy, CA
  2. 1.6 16km SSE of Tres Pinos, CA
  3. 1.7 11km NE of Pinnacles, CA
  4. 1.8 11km NE of Pinnacles, CA
  5. 1.6 23km WSW of Patterson, CA
  6. 1.6 4km W of San Juan Bautista, CA
  7. 1.9 3km WSW of Hollister, CA
  8. 1.8 9km SW of Tres Pinos, CA
  9. 1.8 9km SSW of Tres Pinos, CA
  10. 1.7 16km SSE of Tres Pinos, CA
  11. 2.0 9km SW of Tres Pinos, CA
  12. 2.0 1km W of San Juan Bautista, CA
  13. 3.4 9km SSW of Tres Pinos, CA
  14. 1.5 1km W of San Juan Bautista, CA
  15. 2.8 9km N 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 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.