City vs city
Clyde Hill vs Mercer Island, WA
Clyde Hill and Mercer Island are tied on overall score, with the biggest factor difference in tornado.
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 uses an ingested EPA AirNow snapshot and may not reflect current conditions; 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
Clyde Hill: 8/100 · Mercer Island: 8/100
No gap.
Flood
Clyde Hill: 20/100 · Mercer Island: 22/100
Mercer Island is 2 points higher.
Clyde Hill: FEMA NFHL flood zones: 1 features intersect this tile.
Mercer Island: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Clyde Hill: 7/100 · Mercer Island: 7/100
No gap.
Clyde Hill: Wind exposure derived from ingested design wind / climatology tiles.
Mercer Island: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Clyde Hill: 1/100 · Mercer Island: 1/100
No gap.
Clyde Hill: Lightning exposure derived from ingested climatology tiles.
Mercer Island: Lightning exposure derived from ingested climatology tiles.
Tornado
Clyde Hill: 0/100 · Mercer Island: 8/100
Mercer Island is 8 points higher.
Clyde Hill: Tornado risk derived from NOAA SPC historical reports.
Mercer Island: Tornado risk derived from NOAA SPC historical reports.
Hail
Clyde Hill: 1/100 · Mercer Island: 1/100
No gap.
Clyde Hill: Hail risk derived from NOAA SPC historical reports.
Mercer Island: Hail risk derived from NOAA SPC historical reports.
Storm surge
Clyde Hill: Unavailable · Mercer Island: Unavailable
A score difference cannot be calculated without both sources.
Clyde Hill: Storm surge model is not available for this location yet.
Mercer Island: Storm surge model is not available for this location yet.
Wildfire
Clyde Hill: 8/100 · Mercer Island: 8/100
No gap.
Clyde Hill: Wildfire exposure derived from ingested fire potential tiles.
Mercer Island: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Clyde Hill: 8/100 · Mercer Island: 9/100
Mercer Island is 1 points higher.
Clyde Hill: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Mercer Island: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.