Lewis County WA in Washington faces earthquake / volcanic risk across its 2,436 square mile area. Chehalis in Mt. St. Helens lahar path faces Cascadia earthquake and flooding from Chehalis River. Lewis serves as the county seat and regional emergency coordination hub.
// 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 | 6 / 10 Moderate Risk |
| Primary Hazard | Earthquake / Volcanic |
| Secondary Hazard | Wildfire |
| FEMA Flood Zone | Moderate |
| Federally Declared Disasters | 7 |
| Last Major Event | Mt. St. Helens 1980 |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (360) 740-1394 |
| Emergency Shelters | 3 designated facilities |
| Evacuation Routes | State and US highways |
// County Profile
| County | Lewis County WA |
| State | Washington (WA) |
| Population | 78 |
| Area | 2,436 sq miles |
| FEMA Region | Moderate |
// Other Washington Counties
Pierce County WA
Earthquake / Volcanic Lahar
8/10
High
Snohomish County WA
Earthquake / Landslide
8/10
High
Clallam County WA
Earthquake / Tsunami
7/10
Moderate
King County WA
Earthquake / Volcanic
7/10
High
Whatcom County WA
Earthquake / Volcanic
7/10
High
Pacific County WA
Earthquake / Tsunami
7/10
Moderate