QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Earthquake near San Jose, CA

Yes. A magnitude 1.6 earthquake was recorded 30 km (18 mi) SSW of San Jose, CA, at 5:48 am PDT on 10 August 2016 (12:48 UTC), 11 km deep. 2 people have reported feeling it to USGS.

This was on 10 August 2016. The latest near San Jose: M 2.6 on 27 September 2026.

USGS: 3 km E of Zayante, California

29 km (18 mi) SW of San Jose, CA · 13 km (8 mi) N of Santa Cruz, CA

5:48 am PDT, Aug 10, 2016 · · 11 km deep · released about 6.6 lb of TNT

10 km30 km60 km120 km N Santa Cruz County 8 kmSanta Clara County 32 kmSan Mateo County 49 kmAlameda County 63 kmContra Costa County 93 kmSan Benito County 98 kmStanislaus County 103 kmMonterey County 113 kmSan Joaquin County 114 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
5:48 am PDT on 10 August 2016 ()
Where
30 km (18 mi) SSW of San Jose, CA · earthquakes near San Jose
Magnitude
M 1.6 (md)
Depth
11 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Santa Cruz County, 8 km S
Nearest mapped fault
Zayante-Vergeles fault, 2 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3532 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 2 km (1 mi) from the epicentre. In San Jose, 30 km away, the estimate is intensity I (not felt). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Scotts Valley, Lompico, Mount Hermon, Ben Lomond, Felton, Brookdale.

How big was it?

This earthquake released about 6.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 140× the energy of this one
  4. This earthquake M 1.6 about 6.6 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 27 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.9 The 1989 Loma Prieta, California Earthquake · 13 km ESE of this epicentre
  2. 6.5 Near Morgan Hill, California · 33 km E of this epicentre
  3. 6.3 22 km S of Davenport, California · 36 km SSW of this epicentre
  4. 6.3 16 km SW of Davenport, California · 35 km WSW of this epicentre
  5. 6.2 Near San Jose, California · 30 km NE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 37.0873, -122.0080. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Cruz County, CA 8 km (5 mi) S earthquakes near Santa Cruz County
Santa Clara County, CA 32 km (20 mi) ENE earthquakes near Santa Clara County
San Mateo County, CA 49 km (30 mi) NW earthquakes near San Mateo County
Alameda County, CA 63 km (39 mi) N earthquakes near Alameda County
Contra Costa County, CA 93 km (58 mi) N earthquakes near Contra Costa County
San Benito County, CA 98 km (61 mi) ESE earthquakes near San Benito County

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

Aftershocks so far

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

  1. 1.9 14 km E of Seven Trees, California
  2. 1.5 3 km S of Loyola, California
  3. 2.0 11 km S of Half Moon Bay, California
  4. 1.7 3 km SSE of Portola Valley, California
  5. 2.1 3 km SSE of Portola Valley, California
  6. 1.9 7 km WSW of Gilroy, California
  7. 2.2 14 km N of Morgan Hill, California
  8. 2.0 3 km S of Loyola, California
  9. 1.6 11 km W of Saratoga, California
  10. 1.7 7 km SSE of Pescadero, California
  11. 1.7 7 km SW of Gilroy, California
  12. 1.6 9 km NNE of East Foothills, California
  13. 1.6 3 km S of Loyola, California
  14. 1.5 1 km ENE of Aromas, California
  15. 2.6 5 km WNW of San Juan Bautista, 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.