City vs city
Colwyn vs Philadelphia, PA
Colwyn currently scores 3 points higher overall than Philadelphia, 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 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
Colwyn: 40/100 · Philadelphia: 37/100
Colwyn is 3 points higher.
Flood
Colwyn: 83/100 · Philadelphia: 60/100
Colwyn is 23 points higher.
Colwyn: FEMA NFHL flood zones: 12 features intersect this tile.
Philadelphia: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Colwyn: 22/100 · Philadelphia: 22/100
No gap.
Colwyn: Wind exposure derived from ingested design wind / climatology tiles.
Philadelphia: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Colwyn: 37/100 · Philadelphia: 37/100
No gap.
Colwyn: Lightning exposure derived from ingested climatology tiles.
Philadelphia: Lightning exposure derived from ingested climatology tiles.
Tornado
Colwyn: 8/100 · Philadelphia: 15/100
Philadelphia is 7 points higher.
Colwyn: Tornado risk derived from NOAA SPC historical reports.
Philadelphia: Tornado risk derived from NOAA SPC historical reports.
Hail
Colwyn: 43/100 · Philadelphia: 43/100
No gap.
Colwyn: Hail risk derived from NOAA SPC historical reports.
Philadelphia: Hail risk derived from NOAA SPC historical reports.
Storm surge
Colwyn: 67/100 · Philadelphia: Unavailable
A score difference cannot be calculated without both sources.
Colwyn: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Philadelphia: Storm surge model is not available for this location yet.
Wildfire
Colwyn: 15/100 · Philadelphia: 36/100
Philadelphia is 21 points higher.
Colwyn: Wildfire exposure derived from ingested fire potential tiles.
Philadelphia: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Colwyn: 44/100 · Philadelphia: 46/100
Philadelphia is 2 points higher.
Colwyn: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Philadelphia: Air quality signal derived from the latest EPA AirNow combined AQI grid.