QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

11km NNW of Hollister, CA

· 6.9 km deep · released about 320 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Clara County 39 kmSan Benito County 48 kmSanta Cruz County 52 kmMerced County 69 kmMonterey County 79 kmStanislaus County 79 kmAlameda County 89 kmSan Mateo County 98 kmSan Joaquin County 112 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 2.7 (md)
Depth
6.9 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Santa Clara County, 39 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3073 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 320 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 48,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 34,000× the energy of this one
  3. Around the size people start to feel M 3.0 3× the energy of this one
  4. This earthquake M 2.7 about 320 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 36.9402, -121.4340. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Clara County, CA 39 km (24 mi) SE of here earthquakes near Santa Clara County
San Benito County, CA 48 km (30 mi) NW of here earthquakes near San Benito County
Santa Cruz County, CA 52 km (32 mi) E of here earthquakes near Santa Cruz County
Merced County, CA 69 km (43 mi) WSW of here earthquakes near Merced County
Monterey County, CA 79 km (49 mi) N of here earthquakes near Monterey County
Stanislaus County, CA 79 km (49 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

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

  1. 1.7 10km NE of San Martin, CA
  2. 2.2 3km S of San Juan Bautista, CA
  3. 2.3 3km S of San Juan Bautista, CA
  4. 1.8 8km E of Chualar, CA
  5. 1.8 14km NW of Pinnacles, CA
  6. 1.5 16km SSE of Tres Pinos, CA
  7. 2.1 3km SSW of San Juan Bautista, CA
  8. 2.0 3km N of Pinnacles, CA
  9. 2.3 15km E of Seven Trees, CA
  10. 2.3 8km NNW of Pinnacles, CA
  11. 1.6 9km E of San Martin, CA
  12. 3.0 16km E of Seven Trees, CA
  13. 3.1 15km SSE of Tres Pinos, CA
  14. 1.9 6km NNW of Pinnacles, CA
  15. 2.3 4km NNW 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 4.6 on 2017-11-13 — it released about 710 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.