City vs city
Collingdale vs Harrisburg, PA
Harrisburg currently scores 10 points higher overall than Collingdale, with the largest gap 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 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
Collingdale: 40/100 · Harrisburg: 50/100
Harrisburg is 10 points higher.
Flood
Collingdale: 83/100 · Harrisburg: 98/100
Harrisburg is 15 points higher.
Collingdale: FEMA NFHL flood zones: 12 features intersect this tile.
Harrisburg: FEMA NFHL flood zones: 11 features intersect this tile.
Wind
Collingdale: 22/100 · Harrisburg: 20/100
Collingdale is 2 points higher.
Collingdale: Wind exposure derived from ingested design wind / climatology tiles.
Harrisburg: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Collingdale: 37/100 · Harrisburg: 38/100
Harrisburg is 1 points higher.
Collingdale: Lightning exposure derived from ingested climatology tiles.
Harrisburg: Lightning exposure derived from ingested climatology tiles.
Tornado
Collingdale: 8/100 · Harrisburg: 38/100
Harrisburg is 30 points higher.
Collingdale: Tornado risk derived from NOAA SPC historical reports.
Harrisburg: Tornado risk derived from NOAA SPC historical reports.
Hail
Collingdale: 43/100 · Harrisburg: 72/100
Harrisburg is 29 points higher.
Collingdale: Hail risk derived from NOAA SPC historical reports.
Harrisburg: Hail risk derived from NOAA SPC historical reports.
Storm surge
Collingdale: 67/100 · Harrisburg: Unavailable
A score difference cannot be calculated without both sources.
Collingdale: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Harrisburg: Storm surge model is not available for this location yet.
Wildfire
Collingdale: 15/100 · Harrisburg: 43/100
Harrisburg is 28 points higher.
Collingdale: Wildfire exposure derived from ingested fire potential tiles.
Harrisburg: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Collingdale: 44/100 · Harrisburg: 40/100
Collingdale is 4 points higher.
Collingdale: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Harrisburg: Air quality signal derived from the latest EPA AirNow combined AQI grid.