City vs city
Alta Sierra vs San Diego, CA
Alta Sierra currently scores 13 points higher overall than San Diego, with the largest gap in ingested air quality.
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
Alta Sierra: 35/100 · San Diego: 22/100
Alta Sierra is 13 points higher.
Flood
Alta Sierra: 26/100 · San Diego: 39/100
San Diego is 13 points higher.
Alta Sierra: FEMA NFHL flood zones: 1 features intersect this tile.
San Diego: FEMA NFHL flood zones: 14 features intersect this tile.
Wind
Alta Sierra: 4/100 · San Diego: 6/100
San Diego is 2 points higher.
Alta Sierra: Wind exposure derived from ingested design wind / climatology tiles.
San Diego: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alta Sierra: 2/100 · San Diego: 1/100
Alta Sierra is 1 points higher.
Alta Sierra: Lightning exposure derived from ingested climatology tiles.
San Diego: Lightning exposure derived from ingested climatology tiles.
Tornado
Alta Sierra: 0/100 · San Diego: 12/100
San Diego is 12 points higher.
Alta Sierra: Tornado risk derived from NOAA SPC historical reports.
San Diego: Tornado risk derived from NOAA SPC historical reports.
Hail
Alta Sierra: 1/100 · San Diego: 5/100
San Diego is 4 points higher.
Alta Sierra: Hail risk derived from NOAA SPC historical reports.
San Diego: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alta Sierra: Unavailable · San Diego: Unavailable
A score difference cannot be calculated without both sources.
Alta Sierra: Storm surge model is not available for this location yet.
San Diego: Storm surge model is not available for this location yet.
Wildfire
Alta Sierra: 77/100 · San Diego: 69/100
Alta Sierra is 8 points higher.
Alta Sierra: Wildfire exposure derived from ingested fire potential tiles.
San Diego: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alta Sierra: 100/100 · San Diego: 24/100
Alta Sierra is 76 points higher.
Alta Sierra: 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 Diego: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.