City vs city
Chantilly vs Roanoke, VA
Chantilly currently scores 7 points higher overall than Roanoke, 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
Chantilly: 46/100 · Roanoke: 39/100
Chantilly is 7 points higher.
Flood
Chantilly: 36/100 · Roanoke: 24/100
Chantilly is 12 points higher.
Chantilly: FEMA NFHL flood zones: 9 features intersect this tile.
Roanoke: FEMA NFHL flood zones: 9 features intersect this tile.
Wind
Chantilly: 20/100 · Roanoke: 17/100
Chantilly is 3 points higher.
Chantilly: Wind exposure derived from ingested design wind / climatology tiles.
Roanoke: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Chantilly: 38/100 · Roanoke: 30/100
Chantilly is 8 points higher.
Chantilly: Lightning exposure derived from ingested climatology tiles.
Roanoke: Lightning exposure derived from ingested climatology tiles.
Tornado
Chantilly: 42/100 · Roanoke: 19/100
Chantilly is 23 points higher.
Chantilly: Tornado risk derived from NOAA SPC historical reports.
Roanoke: Tornado risk derived from NOAA SPC historical reports.
Hail
Chantilly: 100/100 · Roanoke: 100/100
No gap.
Chantilly: Hail risk derived from NOAA SPC historical reports.
Roanoke: Hail risk derived from NOAA SPC historical reports.
Storm surge
Chantilly: Unavailable · Roanoke: Unavailable
A score difference cannot be calculated without both sources.
Chantilly: Storm surge model is not available for this location yet.
Roanoke: Storm surge model is not available for this location yet.
Wildfire
Chantilly: 43/100 · Roanoke: 51/100
Roanoke is 8 points higher.
Chantilly: Wildfire exposure derived from ingested fire potential tiles.
Roanoke: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Chantilly: 40/100 · Roanoke: 35/100
Chantilly is 5 points higher.
Chantilly: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Roanoke: Air quality signal derived from the latest EPA AirNow combined AQI grid.