City vs city
Roanoke vs Union Mill, VA
Roanoke currently scores 6 points higher overall than Union Mill, 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
Roanoke: 39/100 · Union Mill: 33/100
Roanoke is 6 points higher.
Flood
Roanoke: 24/100 · Union Mill: 33/100
Union Mill is 9 points higher.
Roanoke: FEMA NFHL flood zones: 9 features intersect this tile.
Union Mill: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Roanoke: 17/100 · Union Mill: 20/100
Union Mill is 3 points higher.
Roanoke: Wind exposure derived from ingested design wind / climatology tiles.
Union Mill: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Roanoke: 30/100 · Union Mill: 40/100
Union Mill is 10 points higher.
Roanoke: Lightning exposure derived from ingested climatology tiles.
Union Mill: Lightning exposure derived from ingested climatology tiles.
Tornado
Roanoke: 19/100 · Union Mill: 27/100
Union Mill is 8 points higher.
Roanoke: Tornado risk derived from NOAA SPC historical reports.
Union Mill: Tornado risk derived from NOAA SPC historical reports.
Hail
Roanoke: 100/100 · Union Mill: 44/100
Roanoke is 56 points higher.
Roanoke: Hail risk derived from NOAA SPC historical reports.
Union Mill: Hail risk derived from NOAA SPC historical reports.
Storm surge
Roanoke: Unavailable · Union Mill: Unavailable
A score difference cannot be calculated without both sources.
Roanoke: Storm surge model is not available for this location yet.
Union Mill: Storm surge model is not available for this location yet.
Wildfire
Roanoke: 51/100 · Union Mill: 29/100
Roanoke is 22 points higher.
Roanoke: Wildfire exposure derived from ingested fire potential tiles.
Union Mill: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Roanoke: 35/100 · Union Mill: 40/100
Union Mill is 5 points higher.
Roanoke: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Union Mill: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.