City vs city
South Williamsport vs Sunbury, PA
South Williamsport currently scores 19 points higher overall than Sunbury, with the largest gap in hail.
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
South Williamsport: 53/100 · Sunbury: 34/100
South Williamsport is 19 points higher.
Flood
South Williamsport: 91/100 · Sunbury: 70/100
South Williamsport is 21 points higher.
South Williamsport: FEMA NFHL flood zones: 10 features intersect this tile.
Sunbury: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
South Williamsport: 19/100 · Sunbury: 20/100
Sunbury is 1 points higher.
South Williamsport: Wind exposure derived from ingested design wind / climatology tiles.
Sunbury: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
South Williamsport: 23/100 · Sunbury: 29/100
Sunbury is 6 points higher.
South Williamsport: Lightning exposure derived from ingested climatology tiles.
Sunbury: Lightning exposure derived from ingested climatology tiles.
Tornado
South Williamsport: 35/100 · Sunbury: 4/100
South Williamsport is 31 points higher.
South Williamsport: Tornado risk derived from NOAA SPC historical reports.
Sunbury: Tornado risk derived from NOAA SPC historical reports.
Hail
South Williamsport: 88/100 · Sunbury: 11/100
South Williamsport is 77 points higher.
South Williamsport: Hail risk derived from NOAA SPC historical reports.
Sunbury: Hail risk derived from NOAA SPC historical reports.
Storm surge
South Williamsport: Unavailable · Sunbury: Unavailable
A score difference cannot be calculated without both sources.
South Williamsport: Storm surge model is not available for this location yet.
Sunbury: Storm surge model is not available for this location yet.
Wildfire
South Williamsport: 43/100 · Sunbury: 50/100
Sunbury is 7 points higher.
South Williamsport: Wildfire exposure derived from ingested fire potential tiles.
Sunbury: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
South Williamsport: 70/100 · Sunbury: 52/100
South Williamsport is 18 points higher.
South Williamsport: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Sunbury: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.