City vs city
Grass Valley vs Henderson, NV
Grass Valley currently scores 4 points higher overall than Henderson, 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 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
Grass Valley: 28/100 · Henderson: 24/100
Grass Valley is 4 points higher.
Flood
Grass Valley: 42/100 · Henderson: 48/100
Henderson is 6 points higher.
Grass Valley: FEMA NFHL flood zones: 1 features intersect this tile.
Henderson: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Grass Valley: 8/100 · Henderson: 8/100
No gap.
Grass Valley: Wind exposure derived from ingested design wind / climatology tiles.
Henderson: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grass Valley: 5/100 · Henderson: 13/100
Henderson is 8 points higher.
Grass Valley: Lightning exposure derived from ingested climatology tiles.
Henderson: Lightning exposure derived from ingested climatology tiles.
Tornado
Grass Valley: 0/100 · Henderson: 0/100
No gap.
Grass Valley: Tornado risk derived from NOAA SPC historical reports.
Henderson: Tornado risk derived from NOAA SPC historical reports.
Hail
Grass Valley: 0/100 · Henderson: 7/100
Henderson is 7 points higher.
Grass Valley: Hail risk derived from NOAA SPC historical reports.
Henderson: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grass Valley: Unavailable · Henderson: Unavailable
A score difference cannot be calculated without both sources.
Grass Valley: Storm surge model is not available for this location yet.
Henderson: Storm surge model is not available for this location yet.
Wildfire
Grass Valley: 55/100 · Henderson: 41/100
Grass Valley is 14 points higher.
Grass Valley: Wildfire exposure derived from ingested fire potential tiles.
Henderson: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grass Valley: Unavailable · Henderson: 25/100
A score difference cannot be calculated without both sources.
Grass Valley: Air quality model is not available for this location yet.
Henderson: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.