Earthquakes in San Jose, California
Last earthquake: 15 minutes ago · 86 in past 30 days · Largest: M3.3 · Population 1.0M
Last updated: October 4, 2026 at 01:04 PM UTC · Data: USGS Earthquake Hazards Program
No significant earthquakes recorded near San Jose recently. Last M2.5+: 6 days ago.
Quick Facts — Earthquakes in San Jose
- Population
- 1.0M
- Seismic activity level
- very high
- Nearest major fault
- Calaveras Fault (5 km)
- Largest recorded nearby
- M6.9 (1989 Loma Prieta earthquake)
- 30-year probability M6.7+
- 72% (UCERF3)
- Earthquakes past 30 days
- 86
- Last significant (M2.5+)
- 6 days ago
- 2026 total (M1.0+)
- 666
San Jose experienced a magnitude 3.3 earthquake 6 days ago 27 km WSW of Westley, CA, at a depth of 3.4 km. Over the past 7 days, 21 earthquakes (M1.0+) have been recorded within 50 km.
San Jose sits in the very high category for U.S. seismic activity. The largest earthquake in or near San Jose since records began was the magnitude 6.9 Loma Prieta earthquake in 1989, which struck approximately 25 km south of the city.
According to the U.S. Geological Survey's UCERF3 model, there is approximately a 72% probability of a magnitude 6.7 or greater earthquake within 100 km of San Jose in the next 30 years, and a 51% probability of a magnitude 7.0 or greater event. The largest credible earthquake predicted for the San Jose area is a magnitude 7.0 event on the Calaveras Fault, which lies 5 km from downtown San Jose. Source: UCERF3 (Field et al. 2015), Table 7 — SF Bay region; Calaveras Fault adjacent
San Jose sits in a region characterized by the San Andreas transform fault system, where the Pacific and North American plates slide past each other at roughly 46 mm per year. Beyond the Calaveras Fault, secondary fault systems include the Hayward Fault and San Andreas Fault (Santa Cruz Mountains). View all earthquakes in California.
2026 Activity vs Historical Average
Recent Significant Earthquakes Near San Jose
Earthquake Map — San Jose Area
Fault Lines Near San Jose
| Fault Name | Type | Distance | Max Credible Mag | Last Major Rupture |
|---|---|---|---|---|
| Calaveras Fault | right-lateral strike-slip | 5 km | M7.0 | 1984 (M6.2 Morgan Hill) |
| Hayward Fault | right-lateral strike-slip | 25 km | M7.0 | 1868 (M6.8) |
| San Andreas Fault (Santa Cruz Mountains) | right-lateral strike-slip | 25 km | M7.9 | 1989 (M6.9 Loma Prieta) |
| San Gregorio Fault | right-lateral strike-slip | 50 km | M7.4 | paleoseismic data limited |
Recent Earthquakes (Last 30 Days)
Dataset at a glance — San Jose
Over the past 30 days, San Jose has recorded 86 earthquakes of magnitude 2.5 or greater in our tracker. The remaining 4 fell in the M2.5–M3.9 band. By depth: 86 shallow (<70 km). 53 of the epicenters were offshore. 9 events produced at least one felt report, totalling 220 citizen submissions to the USGS Did You Feel It? system. Focal depths ranged from -0.3 km to 12.6 km. 59 of the 86 solutions have been reviewed by a USGS seismologist; the remaining 27 are automatic and may be refined.
Each row in the table below includes a narrative summary of the event, ordered by time. Use the column headers to sort or filter by magnitude.
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
16 hours ago 2026-10-03 20:45:59 UTC | 2.4md | 9 km E of Alum Rock, CA 37.359°, -121.720° | 5.6 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.4 earthquake 9 km E of Alum Rock, CA at 20:45 UTC on October 3, 2026. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
4 days ago 2026-09-30 04:04:06 UTC | 2.1md | 26 km WSW of Westley, CA 37.426°, -121.455° | 3.7 km | - | - | - | Auto | USGS → |
A magnitude 2.1 earthquake was recorded 26 km WSW of Westley, CA on September 30, 2026 at 04:04 UTC. Coming 62 hours after a magnitude 3.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
6 days ago 2026-09-28 04:49:04 UTC | 2.1md | 12 km NNE of Alum Rock, CA 37.462°, -121.775° | 5.6 km | 1 | - | - | Auto | USGS → |
On September 28, 2026 at 04:49 UTC, a magnitude 2.1 earthquake struck 12 km NNE of Alum Rock, CA. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
6 days ago 2026-09-27 14:40:46 UTC | 2.6md | 26 km WSW of Westley, CA 37.421°, -121.455° | 2.7 km | - | - | - | Auto | USGS → |
A magnitude 2.6 earthquake was recorded 26 km WSW of Westley, CA on September 27, 2026 at 14:40 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.3 earthquake that occurred about 1 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
6 days ago 2026-09-27 14:21:50 UTC | 3.3mw | 27 km WSW of Westley, CA 37.416°, -121.453° | 3.4 km | 15 | III | - | ✓ Reviewed | USGS → |
On September 27, 2026 at 14:21 UTC, a magnitude 3.3 earthquake struck 27 km WSW of Westley, CA. In the 72 hours after this event, the USGS recorded 8 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-19 2026-09-19 10:52:05 UTC | 2.5md | 10 km ENE of Milpitas, CA 37.467°, -121.802° | 3.2 km | 9 | - | - | ✓ Reviewed | USGS → |
On September 19, 2026, San Jose registered a magnitude 2.5 earthquake 10 km ENE of Milpitas, CA at 10:52 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-17 2026-09-17 03:07:43 UTC | 2.6md | 21 km E of Alum Rock, CA 37.335°, -121.594° | 6.5 km | 6 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 21 km E of Alum Rock, CA with origin time 03:07 UTC on September 17, 2026. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-16 2026-09-16 14:54:16 UTC | 2.1md | 3 km W of Dublin, CA 37.704°, -121.972° | 9.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 3 km W of Dublin, CA with origin time 14:54 UTC on September 16, 2026. It arrived roughly 19 hours after a larger magnitude 2.3 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-15 2026-09-15 20:00:31 UTC | 2.3md | 3 km W of Dublin, CA 37.706°, -121.970° | 10.0 km | 3 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 3 km W of Dublin, CA on September 15, 2026, with origin time 20:00 UTC. In the 72 hours after this event, the USGS recorded 5 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-14 2026-09-14 00:44:10 UTC | 2.5md | 1 km ESE of Woodside, CA 37.428°, -122.245° | 5.2 km | 179 | - | - | ✓ Reviewed | USGS → |
At 00:44 UTC on September 14, 2026, a magnitude 2.5 tremor occurred 1 km ESE of Woodside, CA. In the 72 hours after this event, the USGS recorded 5 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-10 2026-09-10 22:02:52 UTC | 2.1md | 3 km WNW of Dublin, CA 37.708°, -121.971° | 9.6 km | - | - | - | ✓ Reviewed | USGS → |
September 10, 2026 brought a magnitude 2.1 earthquake 3 km WNW of Dublin, CA, logged at 22:02 UTC. In the 72 hours after this event, the USGS recorded 8 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-10 2026-09-10 22:00:38 UTC | 2.1md | 3 km W of Dublin, CA 37.706°, -121.971° | 10.1 km | 1 | - | - | ✓ Reviewed | USGS → |
On September 10, 2026, San Jose registered a magnitude 2.1 earthquake 3 km W of Dublin, CA at 22:00 UTC. In the 72 hours after this event, the USGS recorded 8 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-10 2026-09-10 21:27:18 UTC | 2.1md | 3 km W of Dublin, CA 37.706°, -121.970° | 10.4 km | - | - | - | ✓ Reviewed | USGS → |
At 21:27 UTC on September 10, 2026, a magnitude 2.1 tremor occurred 3 km W of Dublin, CA. In the 72 hours after this event, the USGS recorded 9 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-07 2026-09-07 16:19:14 UTC | 2.2md | 8 km ENE of Gilroy, CA 37.032°, -121.485° | 5.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 8 km ENE of Gilroy, CA came in on September 7, 2026 at 16:19 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-05 2026-09-05 14:59:59 UTC | 2.2md | 7 km SW of Gilroy, CA 36.959°, -121.623° | 4.5 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 7 km SW of Gilroy, CA on September 5, 2026 at 14:59 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
Common Questions About Earthquakes in San Jose
How often do earthquakes happen in San Jose?
San Jose experiences frequent earthquake activity. The area averages 60 earthquakes of magnitude 3.0 or greater per year, with 0.8 reaching magnitude 5.0 or higher. In the past 30 days, 86 earthquakes (M1.0+) have been recorded within 50 km of the city.
What was the biggest earthquake to hit San Jose?
The largest earthquake in or near San Jose since records began was the magnitude 6.9 Loma Prieta earthquake in 1989, which struck approximately 25 km south of the city.
What is the earthquake risk in San Jose?
Earthquakes cannot be predicted with precision. However, the U.S. Geological Survey estimates there is approximately a 72% probability of a magnitude 6.7 or greater earthquake within 100 km of San Jose in the next 30 years. The most likely source is the Calaveras Fault, which has a maximum credible magnitude of 7.0.
What fault lines are near San Jose?
The Calaveras Fault runs approximately 5 km from San Jose and is the most significant local seismic threat, with a maximum credible magnitude of 7.0. Other nearby faults include the Hayward Fault (25 km), the San Andreas Fault (Santa Cruz Mountains) (25 km), the San Gregorio Fault (50 km).
Was there an earthquake in San Jose today?
No earthquakes of magnitude 2.5 or greater have been recorded near San Jose in the past 24 hours. The most recent M2.5+ event was 6 days ago.
About This Page
This page is maintained by Earthquake Tracker, an independent seismic activity reporting service. Earthquake data is sourced from the U.S. Geological Survey (USGS) Earthquake Hazards Program and updated every hour. Probability estimates use the USGS Uniform California Earthquake Rupture Forecast (UCERF3) for California cities. Historical earthquake data is sourced from the USGS Historical Earthquake Catalog. Fault information comes from the USGS Quaternary Fault and Fold Database and SCEC Community Fault Model.
Last data refresh: October 4, 2026 at 01:04 PM UTC