Earthquake · automatic estimate, may change
M 1.6md
Earthquake near San Jose, CA
No earthquake was likely felt in San Jose in the 24 hours to 4:03 am PST (12:03 UTC). The last one was M 2.6, 19 km (12 mi) E, at 12:38 pm PDT on 27 October 2026, estimated intensity II (weak) in town; 8 felt reports to USGS. Every earthquake near San Jose
This page: a magnitude 1.6 earthquake was recorded 25 km (16 mi) north of San Jose, CA, at 9:44 am PST on 3 February 2026 (17:44 UTC), 7.2 km deep. 2 people have reported feeling it to USGS. The magnitude and location are an automatic first estimate and may change.
USGS: 6 km SE of Sunol, CA
30 km (18 mi) N of San Jose, CA · 11 km (7 mi) NE of Fremont, CA
- When
- 9:44 am PST on 3 February 2026 ()
- Where
- 25 km (16 mi) north of San Jose, CA · earthquakes near San Jose
- Magnitude
- M 1.6 (md)
- Depth
- 7.2 km below the surface
- Felt
- 2 reports · strongest reported intensity II
- Nearest
- Alameda County, 11 km NNW
- Nearest mapped fault
- Calaveras fault, 1 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 282 days ago
Earthquake alerts for San Jose, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 9 km (6 mi) from the epicentre. In San Jose, 25 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.
Earthquakes near other towns within 30 km: Pleasanton, Fremont, Livermore, Union City, Milpitas, Dublin.
How big was it?
This earthquake released about 8.4 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.
- Mineral, Virginia 2011 M 5.8 1,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
- Around the size people start to feel M 3.0 110× the energy of this one
- This earthquake M 1.6 about 8.4 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 140,000 times the energy of this one.
Before 2016, the USGS record lists 15 earthquakes of M5 or more within 50 km; the five largest:
- 6.2 Near San Jose, California · 29 km S of this epicentre
- 6.2 The 1984 Morgan Hill, California Earthquake · 32 km SSE of this epicentre
- 6.1 Near San Jose, California · 40 km S of this epicentre
- 5.8 7 km NNW of Boulder Creek, California · 49 km SSW of this epicentre
- 5.8 The 1980 Livermore, California Earthquake · 32 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 37.5623, -121.8440. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Alameda County, CA | 11 km (7 mi) | NNW | earthquakes near Alameda County |
| Santa Clara County, CA | 40 km (25 mi) | SSE | earthquakes near Santa Clara County |
| Contra Costa County, CA | 41 km (25 mi) | NNW | earthquakes near Contra Costa County |
| San Mateo County, CA | 49 km (31 mi) | WSW | earthquakes near San Mateo County |
| Santa Cruz County, CA | 63 km (39 mi) | SSW | earthquakes near Santa Cruz County |
| San Joaquin County, CA | 65 km (40 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
59 earthquakes have been recorded within 50 km since this one.
- 1.7 4 km ESE of San Ramon, CA
- 2.6 5 km SE of San Ramon, CA
- 2.6 3 km ESE of San Ramon, CA
- 1.6 20 km NE of Morgan Hill, CA
- 1.6 4 km ESE of San Ramon, CA
- 1.7 16 km SE of Livermore, CA
- 1.7 8 km E of Alum Rock, CA
- 1.6 15 km E of Seven Trees, CA
- 2.7 4 km ESE of San Ramon, CA
- 1.6 5 km ESE of San Ramon, CA
- 1.9 4 km ESE of San Ramon, CA
- 2.4 5 km ESE of San Ramon, CA
- 1.8 4 km SE of San Ramon, CA
- 3.2 4 km SE of San Ramon, CA
- 1.6 20 km WSW of Patterson, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.