San Jose sits in the heart of Silicon Valley directly adjacent to the Hayward Fault — one of the most dangerous urban faults in the United States. The USGS calls the Hayward Fault the most likely fault to produce the next major Bay Area earthquake. The 2017 Coyote Creek flooding inundated thousands of homes and businesses. San Jose hosts critical technology infrastructure serving global internet and computing needs making earthquake resilience a matter of national economic importance.
// Preparedness Recommendations
- Evacuation routes inland should be identified in advance.
- Store at least 72 hours of food and water.
- Elevate critical belongings above flood level.
- Have backup power ready in case of grid failure.
// Recommended Supplies
Essential gear for power outages, severe weather, and emergency situations in your area.
- Emergency Food Supplies
- Water Filtration & Storage
- Backup Generator
- Solar Backup Power
* We may earn a commission from qualifying purchases.
// Risk Intelligence
| Threat Score | 7 / 10 High |
| Primary Hazard | Earthquake / Flooding |
| FEMA Flood Zone | Zone X (Seismic High Risk) |
| County FEMA Declarations | 44 |
| Last Major Event | Loma Prieta Earthquake (1989) |
// Emergency Information
| Emergency Phone | (408) 277-8900 |
| Evacuation Routes | US-101 South, I-280 North, I-880 North, SR-85 |
| Elevation | 82 ft above sea level |
// County Risk Profile
// Other Cities in Santa Clara County CA
// Nearby Infrastructure Risks
Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.
Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.