City vs city
Lancaster vs South Williamsport, PA
South Williamsport currently scores 11 points higher overall than Lancaster, 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
Lancaster: 42/100 · South Williamsport: 53/100
South Williamsport is 11 points higher.
Flood
Lancaster: 62/100 · South Williamsport: 91/100
South Williamsport is 29 points higher.
Lancaster: FEMA NFHL flood zones: 3 features intersect this tile.
South Williamsport: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Lancaster: 21/100 · South Williamsport: 19/100
Lancaster is 2 points higher.
Lancaster: Wind exposure derived from ingested design wind / climatology tiles.
South Williamsport: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Lancaster: 46/100 · South Williamsport: 23/100
Lancaster is 23 points higher.
Lancaster: Lightning exposure derived from ingested climatology tiles.
South Williamsport: Lightning exposure derived from ingested climatology tiles.
Tornado
Lancaster: 8/100 · South Williamsport: 35/100
South Williamsport is 27 points higher.
Lancaster: Tornado risk derived from NOAA SPC historical reports.
South Williamsport: Tornado risk derived from NOAA SPC historical reports.
Hail
Lancaster: 74/100 · South Williamsport: 88/100
South Williamsport is 14 points higher.
Lancaster: Hail risk derived from NOAA SPC historical reports.
South Williamsport: Hail risk derived from NOAA SPC historical reports.
Storm surge
Lancaster: Unavailable · South Williamsport: Unavailable
A score difference cannot be calculated without both sources.
Lancaster: Storm surge model is not available for this location yet.
South Williamsport: Storm surge model is not available for this location yet.
Wildfire
Lancaster: 40/100 · South Williamsport: 43/100
South Williamsport is 3 points higher.
Lancaster: Wildfire exposure derived from ingested fire potential tiles.
South Williamsport: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Lancaster: 44/100 · South Williamsport: 70/100
South Williamsport is 26 points higher.
Lancaster: Air quality signal derived from the latest EPA AirNow combined AQI grid.
South Williamsport: Air quality signal derived from the latest EPA AirNow combined AQI grid.