City vs city
Mercer Island vs Seattle, WA
Seattle currently scores 6 points higher overall than Mercer Island, with the largest gap in wildfire.
Use this comparison for relocation decisions, insurance shopping, and hazard-prioritized mitigation planning.
Hazard breakdown
Scores describe each city’s reference grid tile, not every property. A missing model is unavailable, not zero risk. Air quality is a current EPA AirNow signal; other factors describe baseline exposure. The overall score blends different hazards and is not a probability of damage. Read the scoring methodology and sources.
Overall
Mercer Island: 8/100 · Seattle: 14/100
Seattle is 6 points higher.
Flood
Mercer Island: 22/100 · Seattle: 30/100
Seattle is 8 points higher.
Mercer Island: FEMA NFHL flood zones: 2 features intersect this tile.
Seattle: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Mercer Island: 7/100 · Seattle: 7/100
No gap.
Mercer Island: Wind exposure derived from ingested design wind / climatology tiles.
Seattle: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Mercer Island: 1/100 · Seattle: 1/100
No gap.
Mercer Island: Lightning exposure derived from ingested climatology tiles.
Seattle: Lightning exposure derived from ingested climatology tiles.
Tornado
Mercer Island: 8/100 · Seattle: 0/100
Mercer Island is 8 points higher.
Mercer Island: Tornado risk derived from NOAA SPC historical reports.
Seattle: Tornado risk derived from NOAA SPC historical reports.
Hail
Mercer Island: 1/100 · Seattle: 0/100
Mercer Island is 1 points higher.
Mercer Island: Hail risk derived from NOAA SPC historical reports.
Seattle: Hail risk derived from NOAA SPC historical reports.
Storm surge
Mercer Island: Unavailable · Seattle: Unavailable
A score difference cannot be calculated without both sources.
Mercer Island: Storm surge model is not available for this location yet.
Seattle: Storm surge model is not available for this location yet.
Wildfire
Mercer Island: 8/100 · Seattle: 26/100
Seattle is 18 points higher.
Mercer Island: Wildfire exposure derived from ingested fire potential tiles.
Seattle: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Mercer Island: 9/100 · Seattle: 8/100
Mercer Island is 1 points higher.
Mercer Island: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Seattle: Air quality signal derived from the latest EPA AirNow combined AQI grid.