City vs city
Ottawa Hills vs Sylvania, OH
Ottawa Hills currently scores 20 points higher overall than Sylvania, with the largest gap in flood.
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
Ottawa Hills: 43/100 · Sylvania: 23/100
Ottawa Hills is 20 points higher.
Flood
Ottawa Hills: 72/100 · Sylvania: 17/100
Ottawa Hills is 55 points higher.
Ottawa Hills: FEMA NFHL flood zones: 16 features intersect this tile.
Sylvania: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Ottawa Hills: 17/100 · Sylvania: 17/100
No gap.
Ottawa Hills: Wind exposure derived from ingested design wind / climatology tiles.
Sylvania: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Ottawa Hills: 35/100 · Sylvania: 31/100
Ottawa Hills is 4 points higher.
Ottawa Hills: Lightning exposure derived from ingested climatology tiles.
Sylvania: Lightning exposure derived from ingested climatology tiles.
Tornado
Ottawa Hills: 0/100 · Sylvania: 4/100
Sylvania is 4 points higher.
Ottawa Hills: Tornado risk derived from NOAA SPC historical reports.
Sylvania: Tornado risk derived from NOAA SPC historical reports.
Hail
Ottawa Hills: 69/100 · Sylvania: 14/100
Ottawa Hills is 55 points higher.
Ottawa Hills: Hail risk derived from NOAA SPC historical reports.
Sylvania: Hail risk derived from NOAA SPC historical reports.
Storm surge
Ottawa Hills: Unavailable · Sylvania: Unavailable
A score difference cannot be calculated without both sources.
Ottawa Hills: Storm surge model is not available for this location yet.
Sylvania: Storm surge model is not available for this location yet.
Wildfire
Ottawa Hills: 28/100 · Sylvania: 38/100
Sylvania is 10 points higher.
Ottawa Hills: Wildfire exposure derived from ingested fire potential tiles.
Sylvania: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Ottawa Hills: 39/100 · Sylvania: 38/100
Ottawa Hills is 1 points higher.
Ottawa Hills: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Sylvania: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.