City vs city
Big River vs San Francisco, CA
San Francisco currently scores 4 points higher overall than Big River, with the largest gap in hail.
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
Big River: 21/100 · San Francisco: 25/100
San Francisco is 4 points higher.
Flood
Big River: 23/100 · San Francisco: 26/100
San Francisco is 3 points higher.
Big River: FEMA NFHL flood zones: 3 features intersect this tile.
San Francisco: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Big River: 8/100 · San Francisco: 2/100
Big River is 6 points higher.
Big River: Wind exposure derived from ingested design wind / climatology tiles.
San Francisco: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Big River: 12/100 · San Francisco: 0/100
Big River is 12 points higher.
Big River: Lightning exposure derived from ingested climatology tiles.
San Francisco: Lightning exposure derived from ingested climatology tiles.
Tornado
Big River: 0/100 · San Francisco: 0/100
No gap.
Big River: Tornado risk derived from NOAA SPC historical reports.
San Francisco: Tornado risk derived from NOAA SPC historical reports.
Hail
Big River: 0/100 · San Francisco: 18/100
San Francisco is 18 points higher.
Big River: Hail risk derived from NOAA SPC historical reports.
San Francisco: Hail risk derived from NOAA SPC historical reports.
Storm surge
Big River: Unavailable · San Francisco: Unavailable
A score difference cannot be calculated without both sources.
Big River: Storm surge model is not available for this location yet.
San Francisco: Storm surge model is not available for this location yet.
Wildfire
Big River: 42/100 · San Francisco: 52/100
San Francisco is 10 points higher.
Big River: Wildfire exposure derived from ingested fire potential tiles.
San Francisco: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Big River: 19/100 · San Francisco: 25/100
San Francisco is 6 points higher.
Big River: 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.