Interactive Seismic Hazard Map
Key Areas We Serve — and Their Primary Seismic Risks
- Seattle Metro: Lies directly above the Seattle Fault, risk of shallow crustal quakes and deep tremors
- Tacoma & South Sound: Exposed to Tacoma Fault and Mount Rainier lahars (volcanic mudflows)
- Bellevue & Eastside: Hillside sliding zones and lateral ground motion from Seattle Fault quakes
- Whidbey Island: Crossed by South Whidbey Island Fault; isolated access can slow post-quake support
- Puyallup Valley: Direct lahar path from Mount Rainier; low elevation and older homes at higher risk
- Kitsap Peninsula: Overlapping zone between Seattle and Tacoma faults; limited escape routes during events
