Portland faces serious Cascadia Subduction Zone earthquake risk. A full Cascadia rupture could produce a magnitude 9.0 earthquake followed by a Pacific tsunami affecting the coast within 15-20 minutes. Portland's older building stock — including thousands of unreinforced masonry buildings — is particularly vulnerable to strong shaking. The Columbia and Willamette Rivers create major flood risk and the Columbia River Gorge creates wildfire corridors that sent smoke through the city in 2017.
// 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
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// Risk Intelligence
| Threat Score | 7 / 10 High |
| Primary Hazard | Earthquake / Flooding |
| FEMA Flood Zone | Zone X (Seismic High Risk) |
| County FEMA Declarations | 40 |
| Last Major Event | Cascadia Earthquake Risk (ongoing) |
// Emergency Information
| Emergency Phone | (503) 823-3333 |
| Evacuation Routes | I-5 South, I-84 East, US-26 West, OR-99E South |
| Elevation | 50 ft above sea level |
// County Risk Profile
// Other Cities in Multnomah County OR
// 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.