City vs city
Roanoke vs Vienna, VA
Vienna currently scores 3 points higher overall than Roanoke, 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
Roanoke: 39/100 · Vienna: 42/100
Vienna is 3 points higher.
Flood
Roanoke: 24/100 · Vienna: 32/100
Vienna is 8 points higher.
Roanoke: FEMA NFHL flood zones: 9 features intersect this tile.
Vienna: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Roanoke: 17/100 · Vienna: 20/100
Vienna is 3 points higher.
Roanoke: Wind exposure derived from ingested design wind / climatology tiles.
Vienna: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Roanoke: 30/100 · Vienna: 39/100
Vienna is 9 points higher.
Roanoke: Lightning exposure derived from ingested climatology tiles.
Vienna: Lightning exposure derived from ingested climatology tiles.
Tornado
Roanoke: 19/100 · Vienna: 19/100
No gap.
Roanoke: Tornado risk derived from NOAA SPC historical reports.
Vienna: Tornado risk derived from NOAA SPC historical reports.
Hail
Roanoke: 100/100 · Vienna: 100/100
No gap.
Roanoke: Hail risk derived from NOAA SPC historical reports.
Vienna: Hail risk derived from NOAA SPC historical reports.
Storm surge
Roanoke: Unavailable · Vienna: Unavailable
A score difference cannot be calculated without both sources.
Roanoke: Storm surge model is not available for this location yet.
Vienna: Storm surge model is not available for this location yet.
Wildfire
Roanoke: 51/100 · Vienna: 43/100
Roanoke is 8 points higher.
Roanoke: Wildfire exposure derived from ingested fire potential tiles.
Vienna: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Roanoke: 35/100 · Vienna: 40/100
Vienna is 5 points higher.
Roanoke: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Vienna: Air quality signal derived from the latest EPA AirNow combined AQI grid.