City vs city
Angwin vs Napa, CA
Napa currently scores 6 points higher overall than Angwin, 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
Angwin: 23/100 · Napa: 29/100
Napa is 6 points higher.
Flood
Angwin: 31/100 · Napa: 43/100
Napa is 12 points higher.
Angwin: FEMA NFHL flood zones: 4 features intersect this tile.
Napa: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Angwin: 2/100 · Napa: 2/100
No gap.
Angwin: Wind exposure derived from ingested design wind / climatology tiles.
Napa: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Angwin: 0/100 · Napa: 0/100
No gap.
Angwin: Lightning exposure derived from ingested climatology tiles.
Napa: Lightning exposure derived from ingested climatology tiles.
Tornado
Angwin: 0/100 · Napa: 0/100
No gap.
Angwin: Tornado risk derived from NOAA SPC historical reports.
Napa: Tornado risk derived from NOAA SPC historical reports.
Hail
Angwin: 1/100 · Napa: 3/100
Napa is 2 points higher.
Angwin: Hail risk derived from NOAA SPC historical reports.
Napa: Hail risk derived from NOAA SPC historical reports.
Storm surge
Angwin: Unavailable · Napa: Unavailable
A score difference cannot be calculated without both sources.
Angwin: Storm surge model is not available for this location yet.
Napa: Storm surge model is not available for this location yet.
Wildfire
Angwin: 56/100 · Napa: 71/100
Napa is 15 points higher.
Angwin: Wildfire exposure derived from ingested fire potential tiles.
Napa: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Angwin: 26/100 · Napa: 26/100
No gap.
Angwin: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Napa: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.