QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

Earthquake near Pleasanton, CA

No earthquake was likely felt in Pleasanton in the 24 hours to 6:48 am PST (14:48 UTC). The last one was M 1.9, 9 km (6 mi) W, at 10:32 am PST on 2 November 2026, estimated intensity II (weak) in town. Every earthquake near Pleasanton

This page: a magnitude 1.9 earthquake was recorded 3 km (2 mi) south of Pleasanton, CA, at 6:04 pm PST on 11 February 2026 (02:04 UTC), 7.9 km deep.

USGS: 3 km S of Pleasanton, CA

in Pleasanton, CA · 38 km (23 mi) N of San Jose, CA

6:04 pm PST, Feb 11, 2026 · · 7.9 km deep · released about 19 lb of TNT

Every earthquake near Pleasanton Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alameda County 4 kmContra Costa County 33 kmSanta Clara County 48 kmSan Mateo County 50 kmSan Joaquin County 63 kmSanta Cruz County 70 kmSolano County 71 kmStanislaus County 77 kmMarin County 90 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
6:04 pm PST on 11 February 2026 ()
Where
3 km (2 mi) south of Pleasanton, CA · earthquakes near Pleasanton
Magnitude
M 1.9 (md)
Depth
7.9 km below the surface
Felt
no reports yet
Nearest
Alameda County, 4 km WNW
Nearest mapped fault
Calaveras 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 262 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 12 km (7 mi) from the epicentre. In Pleasanton, 3 km away, the estimate is intensity II (weak). 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.

Likely felt in: Pleasanton 3 km, intensity II · Dublin 9 km, intensity II · Livermore 11 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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

The largest earthquake within 50 km since 2016 was M 5.1 on 2022-10-25 — about 61,000 times the energy of this one.

Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.2 Near San Jose, California · 38 km S of this epicentre
  2. 6.2 The 1984 Morgan Hill, California Earthquake · 40 km SSE of this epicentre
  3. 6.1 Near San Jose, California · 48 km S of this epicentre
  4. 5.8 The 1980 Livermore, California Earthquake · 25 km NNE of this epicentre
  5. 5.7 15 km NE of East Foothills, California · 24 km SE 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 37.6322, -121.8740. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Alameda County, CA 4 km (2 mi) WNW earthquakes near Alameda County
Contra Costa County, CA 33 km (20 mi) NNW earthquakes near Contra Costa County
Santa Clara County, CA 48 km (30 mi) SSE earthquakes near Santa Clara County
San Mateo County, CA 50 km (31 mi) WSW earthquakes near San Mateo County
San Joaquin County, CA 63 km (39 mi) ENE earthquakes near San Joaquin County
Santa Cruz County, CA 70 km (43 mi) S earthquakes near Santa Cruz 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 5 km SE of San Ramon, CA
  2. 2.0 8 km SSW of Brentwood, CA
  3. 2.5 4 km SE of San Ramon, CA
  4. 2.0 9 km SW of Brentwood, CA
  5. 1.5 3 km ESE of San Ramon, CA
  6. 2.5 15 km N of Morgan Hill, CA
  7. 1.6 4 km SE of San Ramon, CA
  8. 1.6 3 km ESE of San Ramon, CA
  9. 2.8 3 km ESE of San Ramon, CA
  10. 1.9 3 km ESE of San Ramon, CA
  11. 1.6 3 km ESE of San Ramon, CA
  12. 1.7 3 km ESE of San Ramon, CA
  13. 2.7 3 km ESE of San Ramon, CA
  14. 2.1 3 km SE of Pleasant Hill, CA
  15. 1.7 15 km NNE of Morgan Hill, 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.