City vs city
Manassas vs Roanoke, VA
Manassas currently scores 1 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 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
Manassas: 40/100 · Roanoke: 39/100
Manassas is 1 points higher.
Flood
Manassas: 26/100 · Roanoke: 24/100
Manassas is 2 points higher.
Manassas: FEMA NFHL flood zones: 6 features intersect this tile.
Roanoke: FEMA NFHL flood zones: 9 features intersect this tile.
Wind
Manassas: 20/100 · Roanoke: 17/100
Manassas is 3 points higher.
Manassas: Wind exposure derived from ingested design wind / climatology tiles.
Roanoke: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Manassas: 40/100 · Roanoke: 30/100
Manassas is 10 points higher.
Manassas: Lightning exposure derived from ingested climatology tiles.
Roanoke: Lightning exposure derived from ingested climatology tiles.
Tornado
Manassas: 8/100 · Roanoke: 19/100
Roanoke is 11 points higher.
Manassas: Tornado risk derived from NOAA SPC historical reports.
Roanoke: Tornado risk derived from NOAA SPC historical reports.
Hail
Manassas: 100/100 · Roanoke: 100/100
No gap.
Manassas: Hail risk derived from NOAA SPC historical reports.
Roanoke: Hail risk derived from NOAA SPC historical reports.
Storm surge
Manassas: Unavailable · Roanoke: Unavailable
A score difference cannot be calculated without both sources.
Manassas: Storm surge model is not available for this location yet.
Roanoke: Storm surge model is not available for this location yet.
Wildfire
Manassas: 43/100 · Roanoke: 51/100
Roanoke is 8 points higher.
Manassas: Wildfire exposure derived from ingested fire potential tiles.
Roanoke: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Manassas: 41/100 · Roanoke: 35/100
Manassas is 6 points higher.
Manassas: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
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.