City vs city
Columbia vs Piedmont, SC
Columbia currently scores 4 points higher overall than Piedmont, with the largest gap in lightning.
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
Columbia: 50/100 · Piedmont: 46/100
Columbia is 4 points higher.
Flood
Columbia: 27/100 · Piedmont: 30/100
Piedmont is 3 points higher.
Columbia: FEMA NFHL flood zones: 4 features intersect this tile.
Piedmont: FEMA NFHL flood zones: 9 features intersect this tile.
Wind
Columbia: 24/100 · Piedmont: 17/100
Columbia is 7 points higher.
Columbia: Wind exposure derived from ingested design wind / climatology tiles.
Piedmont: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Columbia: 72/100 · Piedmont: 46/100
Columbia is 26 points higher.
Columbia: Lightning exposure derived from ingested climatology tiles.
Piedmont: Lightning exposure derived from ingested climatology tiles.
Tornado
Columbia: 42/100 · Piedmont: 38/100
Columbia is 4 points higher.
Columbia: Tornado risk derived from NOAA SPC historical reports.
Piedmont: Tornado risk derived from NOAA SPC historical reports.
Hail
Columbia: 84/100 · Piedmont: 100/100
Piedmont is 16 points higher.
Columbia: Hail risk derived from NOAA SPC historical reports.
Piedmont: Hail risk derived from NOAA SPC historical reports.
Storm surge
Columbia: Unavailable · Piedmont: Unavailable
A score difference cannot be calculated without both sources.
Columbia: Storm surge model is not available for this location yet.
Piedmont: Storm surge model is not available for this location yet.
Wildfire
Columbia: 73/100 · Piedmont: 64/100
Columbia is 9 points higher.
Columbia: Wildfire exposure derived from ingested fire potential tiles.
Piedmont: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Columbia: 26/100 · Piedmont: 28/100
Piedmont is 2 points higher.
Columbia: 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.