QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

18km SSW of Gustine, CA

· 7.2 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Merced County 33 kmStanislaus County 51 kmSan Benito County 55 kmSanta Clara County 56 kmSanta Cruz County 84 kmSan Joaquin County 94 kmAlameda County 96 kmMonterey County 98 kmMariposa County 115 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
7.2 km below the surface
Felt
no reports yet
Nearest
Merced County, 33 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1852 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 37.1038, -121.0728. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Merced County, CA 33 km (20 mi) WSW of here earthquakes near Merced County
Stanislaus County, CA 51 km (32 mi) S of here earthquakes near Stanislaus County
San Benito County, CA 55 km (34 mi) N of here earthquakes near San Benito County
Santa Clara County, CA 56 km (35 mi) ESE of here earthquakes near Santa Clara County
Santa Cruz County, CA 84 km (52 mi) E of here earthquakes near Santa Cruz County
San Joaquin County, CA 94 km (58 mi) S of here earthquakes near San Joaquin County

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

Aftershocks so far

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

  1. 2.3 15km SE of Tres Pinos, CA
  2. 1.6 8km ENE of Gilroy, CA
  3. 2.4 6km N of Hollister, CA
  4. 1.6 7km WSW of Ridgemark, CA
  5. 1.8 10km ENE of Morgan Hill, CA
  6. 2.1 7km NE of San Martin, CA
  7. 1.9 22km NE of Morgan Hill, CA
  8. 1.5 3km SW of Hollister, CA
  9. 1.9 6km ENE of Hollister, CA
  10. 2.3 6km SSW of Gilroy, CA
  11. 2.1 8km SSW of Tres Pinos, CA
  12. 1.9 6km S of Tres Pinos, CA
  13. 2.1 12km NNE of Hollister, CA
  14. 2.4 6km NNE of Los Banos, CA
  15. 2.1 5km NNE of Los Banos, 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.

On USGS

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