City vs city
Manassas Park vs Union Mill, VA
Manassas Park currently scores 7 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
Manassas Park: 40/100 · Union Mill: 33/100
Manassas Park is 7 points higher.
Flood
Manassas Park: 26/100 · Union Mill: 33/100
Union Mill is 7 points higher.
Manassas Park: FEMA NFHL flood zones: 6 features intersect this tile.
Union Mill: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Manassas Park: 20/100 · Union Mill: 20/100
No gap.
Manassas Park: Wind exposure derived from ingested design wind / climatology tiles.
Union Mill: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Manassas Park: 40/100 · Union Mill: 40/100
No gap.
Manassas Park: Lightning exposure derived from ingested climatology tiles.
Union Mill: Lightning exposure derived from ingested climatology tiles.
Tornado
Manassas Park: 8/100 · Union Mill: 27/100
Union Mill is 19 points higher.
Manassas Park: Tornado risk derived from NOAA SPC historical reports.
Union Mill: Tornado risk derived from NOAA SPC historical reports.
Hail
Manassas Park: 100/100 · Union Mill: 44/100
Manassas Park is 56 points higher.
Manassas Park: Hail risk derived from NOAA SPC historical reports.
Union Mill: Hail risk derived from NOAA SPC historical reports.
Storm surge
Manassas Park: Unavailable · Union Mill: Unavailable
A score difference cannot be calculated without both sources.
Manassas Park: Storm surge model is not available for this location yet.
Union Mill: Storm surge model is not available for this location yet.
Wildfire
Manassas Park: 43/100 · Union Mill: 29/100
Manassas Park is 14 points higher.
Manassas Park: Wildfire exposure derived from ingested fire potential tiles.
Union Mill: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Manassas Park: 41/100 · Union Mill: 40/100
Manassas Park is 1 points higher.
Manassas Park: 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.