QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

19 km SW of Gustine, California

· 7.3 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Merced County 39 kmSanta Clara County 48 kmStanislaus County 48 kmSan Benito County 60 kmSanta Cruz County 77 kmAlameda County 87 kmSan Joaquin County 88 kmMonterey County 102 kmContra Costa 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
7.3 km below the surface
Felt
no reports yet
Nearest
Merced County, 39 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3491 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 37.1450, -121.1615. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Merced County, CA 39 km (24 mi) W of here earthquakes near Merced County
Santa Clara County, CA 48 km (30 mi) E of here earthquakes near Santa Clara County
Stanislaus County, CA 48 km (30 mi) SSW of here earthquakes near Stanislaus County
San Benito County, CA 60 km (37 mi) N of here earthquakes near San Benito County
Santa Cruz County, CA 77 km (48 mi) ENE of here earthquakes near Santa Cruz County
Alameda County, CA 87 km (54 mi) SE of here earthquakes near Alameda County

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

Aftershocks so far

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

  1. 1.6 6 km S of Gilroy, California
  2. 2.4 7 km ENE of Gilroy, California
  3. 2.4 16 km N of Morgan Hill, California
  4. 2.3 11 km ESE of Gilroy, California
  5. 2.0 10 km ESE of Gilroy, California
  6. 3.2 10 km ESE of Gilroy, California
  7. 2.9 10 km ESE of Gilroy, California
  8. 2.9 16 km E of Seven Trees, California
  9. 2.2 1 km NW of Hollister, California
  10. 2.1 5 km ESE of Aromas, California
  11. 2.0 3 km ESE of Aromas, California
  12. 1.6 5 km S of Gilroy, California
  13. 1.8 19 km ENE of Tres Pinos, California
  14. 2.4 4 km ENE of Tres Pinos, California
  15. 1.7 5 km ESE of Aromas, California

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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.