City vs city
Blackhawk vs Piedmont, SD
Blackhawk currently scores 4 points higher overall than Piedmont, 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
Blackhawk: 47/100 · Piedmont: 43/100
Blackhawk is 4 points higher.
Flood
Blackhawk: 44/100 · Piedmont: 59/100
Piedmont is 15 points higher.
Blackhawk: FEMA NFHL flood zones: 5 features intersect this tile.
Piedmont: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Blackhawk: 20/100 · Piedmont: 20/100
No gap.
Blackhawk: Wind exposure derived from ingested design wind / climatology tiles.
Piedmont: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Blackhawk: 21/100 · Piedmont: 25/100
Piedmont is 4 points higher.
Blackhawk: Lightning exposure derived from ingested climatology tiles.
Piedmont: Lightning exposure derived from ingested climatology tiles.
Tornado
Blackhawk: 0/100 · Piedmont: 8/100
Piedmont is 8 points higher.
Blackhawk: Tornado risk derived from NOAA SPC historical reports.
Piedmont: Tornado risk derived from NOAA SPC historical reports.
Hail
Blackhawk: 100/100 · Piedmont: 100/100
No gap.
Blackhawk: Hail risk derived from NOAA SPC historical reports.
Piedmont: Hail risk derived from NOAA SPC historical reports.
Storm surge
Blackhawk: Unavailable · Piedmont: Unavailable
A score difference cannot be calculated without both sources.
Blackhawk: Storm surge model is not available for this location yet.
Piedmont: Storm surge model is not available for this location yet.
Wildfire
Blackhawk: 67/100 · Piedmont: 60/100
Blackhawk is 7 points higher.
Blackhawk: Wildfire exposure derived from ingested fire potential tiles.
Piedmont: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Blackhawk: 27/100 · Piedmont: 27/100
No gap.
Blackhawk: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Piedmont: Air quality signal derived from the latest EPA AirNow combined AQI grid.