City vs city
Bryn Mawr-Skyway vs Mercer Island, WA
Bryn Mawr-Skyway 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
Bryn Mawr-Skyway: 14/100 · Mercer Island: 8/100
Bryn Mawr-Skyway is 6 points higher.
Flood
Bryn Mawr-Skyway: 25/100 · Mercer Island: 22/100
Bryn Mawr-Skyway is 3 points higher.
Bryn Mawr-Skyway: FEMA NFHL flood zones: 11 features intersect this tile.
Mercer Island: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Bryn Mawr-Skyway: 7/100 · Mercer Island: 7/100
No gap.
Bryn Mawr-Skyway: Wind exposure derived from ingested design wind / climatology tiles.
Mercer Island: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Bryn Mawr-Skyway: 1/100 · Mercer Island: 1/100
No gap.
Bryn Mawr-Skyway: Lightning exposure derived from ingested climatology tiles.
Mercer Island: Lightning exposure derived from ingested climatology tiles.
Tornado
Bryn Mawr-Skyway: 0/100 · Mercer Island: 8/100
Mercer Island is 8 points higher.
Bryn Mawr-Skyway: Tornado risk derived from NOAA SPC historical reports.
Mercer Island: Tornado risk derived from NOAA SPC historical reports.
Hail
Bryn Mawr-Skyway: 0/100 · Mercer Island: 1/100
Mercer Island is 1 points higher.
Bryn Mawr-Skyway: Hail risk derived from NOAA SPC historical reports.
Mercer Island: Hail risk derived from NOAA SPC historical reports.
Storm surge
Bryn Mawr-Skyway: Unavailable · Mercer Island: Unavailable
A score difference cannot be calculated without both sources.
Bryn Mawr-Skyway: Storm surge model is not available for this location yet.
Mercer Island: Storm surge model is not available for this location yet.
Wildfire
Bryn Mawr-Skyway: 30/100 · Mercer Island: 8/100
Bryn Mawr-Skyway is 22 points higher.
Bryn Mawr-Skyway: Wildfire exposure derived from ingested fire potential tiles.
Mercer Island: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Bryn Mawr-Skyway: 8/100 · Mercer Island: 9/100
Mercer Island is 1 points higher.
Bryn Mawr-Skyway: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Mercer Island: Air quality signal derived from the latest EPA AirNow combined AQI grid.