City vs city
Grass Valley vs Unionville, NV
Grass Valley currently scores 2 points higher overall than Unionville, with the largest gap in wildfire.
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
Grass Valley: 28/100 · Unionville: 26/100
Grass Valley is 2 points higher.
Flood
Grass Valley: 42/100 · Unionville: 42/100
No gap.
Grass Valley: FEMA NFHL flood zones: 1 features intersect this tile.
Unionville: FEMA NFHL flood zones: 1 features intersect this tile.
Wind
Grass Valley: 8/100 · Unionville: 8/100
No gap.
Grass Valley: Wind exposure derived from ingested design wind / climatology tiles.
Unionville: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grass Valley: 5/100 · Unionville: 4/100
Grass Valley is 1 points higher.
Grass Valley: Lightning exposure derived from ingested climatology tiles.
Unionville: Lightning exposure derived from ingested climatology tiles.
Tornado
Grass Valley: 0/100 · Unionville: 0/100
No gap.
Grass Valley: Tornado risk derived from NOAA SPC historical reports.
Unionville: Tornado risk derived from NOAA SPC historical reports.
Hail
Grass Valley: 0/100 · Unionville: 0/100
No gap.
Grass Valley: Hail risk derived from NOAA SPC historical reports.
Unionville: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grass Valley: Unavailable · Unionville: Unavailable
A score difference cannot be calculated without both sources.
Grass Valley: Storm surge model is not available for this location yet.
Unionville: Storm surge model is not available for this location yet.
Wildfire
Grass Valley: 55/100 · Unionville: 61/100
Unionville is 6 points higher.
Grass Valley: Wildfire exposure derived from ingested fire potential tiles.
Unionville: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Grass Valley: Unavailable · Unionville: 14/100
A score difference cannot be calculated without both sources.
Grass Valley: Air quality model is not available for this location yet.
Unionville: Air quality signal derived from the latest EPA AirNow combined AQI grid.