City vs city
San Francisco vs Willows, CA
San Francisco currently scores 3 points higher overall than Willows, with the largest gap in tornado.
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
San Francisco: 25/100 · Willows: 22/100
San Francisco is 3 points higher.
Flood
San Francisco: 26/100 · Willows: 48/100
Willows is 22 points higher.
San Francisco: FEMA NFHL flood zones: 4 features intersect this tile.
Willows: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
San Francisco: 2/100 · Willows: 3/100
Willows is 1 points higher.
San Francisco: Wind exposure derived from ingested design wind / climatology tiles.
Willows: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
San Francisco: 0/100 · Willows: 1/100
Willows is 1 points higher.
San Francisco: Lightning exposure derived from ingested climatology tiles.
Willows: Lightning exposure derived from ingested climatology tiles.
Tornado
San Francisco: 0/100 · Willows: 23/100
Willows is 23 points higher.
San Francisco: Tornado risk derived from NOAA SPC historical reports.
Willows: Tornado risk derived from NOAA SPC historical reports.
Hail
San Francisco: 18/100 · Willows: 5/100
San Francisco is 13 points higher.
San Francisco: Hail risk derived from NOAA SPC historical reports.
Willows: Hail risk derived from NOAA SPC historical reports.
Storm surge
San Francisco: Unavailable · Willows: Unavailable
A score difference cannot be calculated without both sources.
San Francisco: Storm surge model is not available for this location yet.
Willows: Storm surge model is not available for this location yet.
Wildfire
San Francisco: 52/100 · Willows: 51/100
San Francisco is 1 points higher.
San Francisco: Wildfire exposure derived from ingested fire potential tiles.
Willows: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
San Francisco: 25/100 · Willows: 21/100
San Francisco is 4 points higher.
San Francisco: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Willows: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.