City vs city
Napa vs San Francisco, CA
Napa currently scores 4 points higher overall than San Francisco, 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
Napa: 29/100 · San Francisco: 25/100
Napa is 4 points higher.
Flood
Napa: 43/100 · San Francisco: 26/100
Napa is 17 points higher.
Napa: FEMA NFHL flood zones: 13 features intersect this tile.
San Francisco: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Napa: 2/100 · San Francisco: 2/100
No gap.
Napa: Wind exposure derived from ingested design wind / climatology tiles.
San Francisco: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Napa: 0/100 · San Francisco: 0/100
No gap.
Napa: Lightning exposure derived from ingested climatology tiles.
San Francisco: Lightning exposure derived from ingested climatology tiles.
Tornado
Napa: 0/100 · San Francisco: 0/100
No gap.
Napa: Tornado risk derived from NOAA SPC historical reports.
San Francisco: Tornado risk derived from NOAA SPC historical reports.
Hail
Napa: 3/100 · San Francisco: 18/100
San Francisco is 15 points higher.
Napa: Hail risk derived from NOAA SPC historical reports.
San Francisco: Hail risk derived from NOAA SPC historical reports.
Storm surge
Napa: Unavailable · San Francisco: Unavailable
A score difference cannot be calculated without both sources.
Napa: Storm surge model is not available for this location yet.
San Francisco: Storm surge model is not available for this location yet.
Wildfire
Napa: 71/100 · San Francisco: 52/100
Napa is 19 points higher.
Napa: Wildfire exposure derived from ingested fire potential tiles.
San Francisco: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Napa: 26/100 · San Francisco: 25/100
Napa is 1 points higher.
Napa: Air quality signal derived from the latest EPA AirNow combined AQI grid.
San Francisco: Air quality signal derived from the latest EPA AirNow combined AQI grid.
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