City vs city
Alleghany vs San Francisco, CA
Alleghany currently scores 26 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 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
Alleghany: 45/100 · San Francisco: 19/100
Alleghany is 26 points higher.
Flood
Alleghany: 28/100 · San Francisco: 56/100
San Francisco is 28 points higher.
Alleghany: FEMA NFHL flood zones: 3 features intersect this tile.
San Francisco: FEMA NFHL flood zones: 16 features intersect this tile.
Wind
Alleghany: 5/100 · San Francisco: 2/100
Alleghany is 3 points higher.
Alleghany: Wind exposure derived from ingested design wind / climatology tiles.
San Francisco: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alleghany: 2/100 · San Francisco: 0/100
Alleghany is 2 points higher.
Alleghany: Lightning exposure derived from ingested climatology tiles.
San Francisco: Lightning exposure derived from ingested climatology tiles.
Tornado
Alleghany: 0/100 · San Francisco: 0/100
No gap.
Alleghany: Tornado risk derived from NOAA SPC historical reports.
San Francisco: Tornado risk derived from NOAA SPC historical reports.
Hail
Alleghany: 0/100 · San Francisco: 3/100
San Francisco is 3 points higher.
Alleghany: Hail risk derived from NOAA SPC historical reports.
San Francisco: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alleghany: Unavailable · San Francisco: Unavailable
A score difference cannot be calculated without both sources.
Alleghany: Storm surge model is not available for this location yet.
San Francisco: Storm surge model is not available for this location yet.
Wildfire
Alleghany: 97/100 · San Francisco: 8/100
Alleghany is 89 points higher.
Alleghany: Wildfire exposure derived from ingested fire potential tiles.
San Francisco: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alleghany: 92/100 · San Francisco: 25/100
Alleghany is 67 points higher.
Alleghany: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
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.