QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Pleasanton, CA

No earthquake was likely felt in Pleasanton in the 24 hours to 3:25 am PST (11:25 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 2.1 earthquake was recorded 5 km (3 mi) north of Pleasanton, CA, at 11:05 am PDT on 7 September 2025 (18:05 UTC), 12 km deep. 3 people have reported feeling it to USGS.

USGS: 5 km N of Pleasanton, CA

in Dublin, CA · 46 km (28 mi) N of San Jose, CA

11:05 am PDT, Sep 7, 2025 · · 12 km deep · released about 38 lb of TNT

Every earthquake near Pleasanton Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alameda County 8 kmContra Costa County 25 kmSan Mateo County 55 kmSanta Clara County 56 kmSan Joaquin County 58 kmSolano County 63 kmStanislaus County 78 kmSanta Cruz County 78 kmMarin County 86 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
11:05 am PDT on 7 September 2025 ()
Where
5 km (3 mi) north of Pleasanton, CA · earthquakes near Pleasanton
Magnitude
M 2.1 (md)
Depth
12 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Alameda County, 8 km SSW
Nearest mapped fault
Pleasanton fault, 3 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 430 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, 5 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 5 km, intensity II · Dublin 6 km, intensity II · Livermore 9 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 31,000 times the energy of this one.

Before 2016, the USGS record lists 8 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.2 Near San Jose, California · 45 km S of this epicentre
  2. 6.2 The 1984 Morgan Hill, California Earthquake · 47 km SSE of this epicentre
  3. 5.8 The 1980 Livermore, California Earthquake · 17 km NNE of this epicentre
  4. 5.7 15 km NE of East Foothills, California · 30 km SSE of this epicentre
  5. 5.5 6 km NNE of East Foothills, California · 31 km SSE 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 37.7055, -121.8652. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Alameda County, CA 8 km (5 mi) SSW earthquakes near Alameda County
Contra Costa County, CA 25 km (16 mi) NNW earthquakes near Contra Costa County
San Mateo County, CA 55 km (34 mi) SW earthquakes near San Mateo County
Santa Clara County, CA 56 km (35 mi) SSE earthquakes near Santa Clara County
San Joaquin County, CA 58 km (36 mi) ENE earthquakes near San Joaquin County
Solano County, CA 63 km (39 mi) N earthquakes near Solano County

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

Aftershocks so far

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

  1. 2.2 1 km E of Woodside, CA
  2. 2.0 1 km ENE of Woodside, CA
  3. 2.5 1 km E of Woodside, CA
  4. 2.5 7 km NNW of Lafayette, CA
  5. 2.8 8 km NNW of Lafayette, CA
  6. 2.2 1 km E of Woodside, CA
  7. 2.0 1 km E of Woodside, CA
  8. 2.3 7 km NNW of Lafayette, CA
  9. 2.2 2 km E of Berkeley, CA
  10. 1.5 11 km ESE of Alum Rock, CA
  11. 2.3 11 km ESE of Alum Rock, CA
  12. 2.8 11 km ESE of Alum Rock, CA
  13. 1.9 2 km ENE of Berkeley, CA
  14. 1.9 2 km E of Berkeley, CA
  15. 2.0 2 km E of Berkeley, 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.