City vs city
Piedmont vs Rock Hill, SC
Piedmont currently scores 4 points higher overall than Rock Hill, 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
Piedmont: 46/100 · Rock Hill: 42/100
Piedmont is 4 points higher.
Flood
Piedmont: 30/100 · Rock Hill: 33/100
Rock Hill is 3 points higher.
Piedmont: FEMA NFHL flood zones: 9 features intersect this tile.
Rock Hill: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Piedmont: 17/100 · Rock Hill: 19/100
Rock Hill is 2 points higher.
Piedmont: Wind exposure derived from ingested design wind / climatology tiles.
Rock Hill: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Piedmont: 46/100 · Rock Hill: 46/100
No gap.
Piedmont: Lightning exposure derived from ingested climatology tiles.
Rock Hill: Lightning exposure derived from ingested climatology tiles.
Tornado
Piedmont: 38/100 · Rock Hill: 19/100
Piedmont is 19 points higher.
Piedmont: Tornado risk derived from NOAA SPC historical reports.
Rock Hill: Tornado risk derived from NOAA SPC historical reports.
Hail
Piedmont: 100/100 · Rock Hill: 100/100
No gap.
Piedmont: Hail risk derived from NOAA SPC historical reports.
Rock Hill: Hail risk derived from NOAA SPC historical reports.
Storm surge
Piedmont: Unavailable · Rock Hill: Unavailable
A score difference cannot be calculated without both sources.
Piedmont: Storm surge model is not available for this location yet.
Rock Hill: Storm surge model is not available for this location yet.
Wildfire
Piedmont: 64/100 · Rock Hill: 52/100
Piedmont is 12 points higher.
Piedmont: Wildfire exposure derived from ingested fire potential tiles.
Rock Hill: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Piedmont: 28/100 · Rock Hill: 24/100
Piedmont is 4 points higher.
Piedmont: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Rock Hill: Air quality signal derived from the latest EPA AirNow combined AQI grid.