QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near Fremont, CA

No earthquake was likely felt in Fremont in the 24 hours to 8:29 pm PST (04:29 UTC). The last one was M 3.5, 49 km (31 mi) ESE, at 7:21 am PDT on 27 September 2026, estimated intensity II (weak) in town; 8 felt reports to USGS. Every earthquake near Fremont

This page: a magnitude 2.6 earthquake was recorded 7 km (5 mi) east-southeast of Fremont, CA, at 7:17 am PDT on 4 June 2026 (14:17 UTC), 8.6 km deep. 8 people have reported feeling it to USGS.

USGS: 7 km E of Fremont, CA

5 km (3 mi) NE of Fremont, CA

7:17 am PDT, Jun 4, 2026 · · 8.6 km deep · released about 280 lb of TNT

Every earthquake near Fremont Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alameda County 13 kmSanta Clara County 40 kmSan Mateo County 43 kmContra Costa County 43 kmSanta Cruz County 58 kmSan Joaquin County 72 kmStanislaus County 80 kmSolano County 82 kmMarin County 94 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
7:17 am PDT on 4 June 2026 ()
Where
7 km (5 mi) east-southeast of Fremont, CA · earthquakes near Fremont
Magnitude
M 2.6 (md)
Depth
8.6 km below the surface
Felt
8 reports · strongest reported intensity III
Nearest
Alameda County, 13 km N
Nearest mapped fault
Hayward fault, under 1 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 88 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 23 km (14 mi) from the epicentre. In Fremont, 7 km away, the estimate is intensity III (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: Fremont 7 km, intensity III · Milpitas 12 km, intensity II · Newark 12 km, intensity II · Union City 12 km, intensity II · Pleasanton 15 km, intensity II · Dublin 19 km, intensity II · Santa Clara 20 km, intensity II · Livermore 21 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 53,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 38,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.3× the energy of this one
  4. This earthquake M 2.6 about 280 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 4,100 times the energy of this one.

Before 2016, the USGS record lists 15 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.2 Near San Jose, California · 28 km SSE of this epicentre
  2. 6.2 The 1984 Morgan Hill, California Earthquake · 32 km SE of this epicentre
  3. 6.1 Near San Jose, California · 38 km SSE of this epicentre
  4. 5.8 7 km NNW of Boulder Creek, California · 44 km SSW of this epicentre
  5. 5.8 The 1980 Livermore, California Earthquake · 36 km NNE 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 37.5322, -121.9075. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Alameda County, CA 13 km (8 mi) N earthquakes near Alameda County
Santa Clara County, CA 40 km (25 mi) SSE earthquakes near Santa Clara County
San Mateo County, CA 43 km (27 mi) WSW earthquakes near San Mateo County
Contra Costa County, CA 43 km (27 mi) N earthquakes near Contra Costa County
Santa Cruz County, CA 58 km (36 mi) S earthquakes near Santa Cruz County
San Joaquin County, CA 72 km (44 mi) NE earthquakes near San Joaquin County

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

Aftershocks so far

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

  1. 1.9 1 km WNW of Lafayette, CA
  2. 2.3 5 km SSW of Alameda, CA
  3. 1.7 2 km SSW of Clayton, CA
  4. 1.5 3 km ESE of Woodside, CA
  5. 1.8 3 km NNE of Portola Valley, CA
  6. 1.7 6 km SSE of Portola Valley, CA
  7. 1.9 3 km NNE of Portola Valley, CA
  8. 2.5 2 km SE of Concord, CA
  9. 1.8 15 km E of Seven Trees, CA
  10. 1.6 1 km ENE of Hayward, CA
  11. 2.2 3 km NNE of San Leandro, CA
  12. 1.6 4 km NNE of San Leandro, CA
  13. 2.8 4 km N of San Leandro, CA
  14. 3.8 3 km N of San Leandro, CA
  15. 1.7 8 km WSW of Byron, 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.