City vs city
Alcolu vs Rock Hill, SC
Alcolu currently scores 6 points higher overall than Rock Hill, 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
Alcolu: 48/100 · Rock Hill: 42/100
Alcolu is 6 points higher.
Flood
Alcolu: 42/100 · Rock Hill: 33/100
Alcolu is 9 points higher.
Alcolu: FEMA NFHL flood zones: 10 features intersect this tile.
Rock Hill: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Alcolu: 34/100 · Rock Hill: 19/100
Alcolu is 15 points higher.
Alcolu: Wind exposure derived from ingested design wind / climatology tiles.
Rock Hill: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alcolu: 75/100 · Rock Hill: 46/100
Alcolu is 29 points higher.
Alcolu: Lightning exposure derived from ingested climatology tiles.
Rock Hill: Lightning exposure derived from ingested climatology tiles.
Tornado
Alcolu: 31/100 · Rock Hill: 19/100
Alcolu is 12 points higher.
Alcolu: Tornado risk derived from NOAA SPC historical reports.
Rock Hill: Tornado risk derived from NOAA SPC historical reports.
Hail
Alcolu: 65/100 · Rock Hill: 100/100
Rock Hill is 35 points higher.
Alcolu: Hail risk derived from NOAA SPC historical reports.
Rock Hill: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alcolu: Unavailable · Rock Hill: Unavailable
A score difference cannot be calculated without both sources.
Alcolu: Storm surge model is not available for this location yet.
Rock Hill: Storm surge model is not available for this location yet.
Wildfire
Alcolu: 61/100 · Rock Hill: 52/100
Alcolu is 9 points higher.
Alcolu: Wildfire exposure derived from ingested fire potential tiles.
Rock Hill: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alcolu: 26/100 · Rock Hill: 24/100
Alcolu is 2 points higher.
Alcolu: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Rock Hill: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.