City vs city
Medina vs Mercer Island, WA
Medina 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
Medina: 8/100 · Mercer Island: 8/100
No gap.
Flood
Medina: 20/100 · Mercer Island: 22/100
Mercer Island is 2 points higher.
Medina: FEMA NFHL flood zones: 1 features intersect this tile.
Mercer Island: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Medina: 7/100 · Mercer Island: 7/100
No gap.
Medina: Wind exposure derived from ingested design wind / climatology tiles.
Mercer Island: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Medina: 1/100 · Mercer Island: 1/100
No gap.
Medina: Lightning exposure derived from ingested climatology tiles.
Mercer Island: Lightning exposure derived from ingested climatology tiles.
Tornado
Medina: 0/100 · Mercer Island: 8/100
Mercer Island is 8 points higher.
Medina: Tornado risk derived from NOAA SPC historical reports.
Mercer Island: Tornado risk derived from NOAA SPC historical reports.
Hail
Medina: 1/100 · Mercer Island: 1/100
No gap.
Medina: Hail risk derived from NOAA SPC historical reports.
Mercer Island: Hail risk derived from NOAA SPC historical reports.
Storm surge
Medina: Unavailable · Mercer Island: Unavailable
A score difference cannot be calculated without both sources.
Medina: Storm surge model is not available for this location yet.
Mercer Island: Storm surge model is not available for this location yet.
Wildfire
Medina: 8/100 · Mercer Island: 8/100
No gap.
Medina: Wildfire exposure derived from ingested fire potential tiles.
Mercer Island: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Medina: 8/100 · Mercer Island: 9/100
Mercer Island is 1 points higher.
Medina: 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.