City vs city
San Diego vs Walnut Grove, CA
Walnut Grove currently scores 15 points higher overall than San Diego, with the largest gap in flood.
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 Diego: 22/100 · Walnut Grove: 37/100
Walnut Grove is 15 points higher.
Flood
San Diego: 39/100 · Walnut Grove: 99/100
Walnut Grove is 60 points higher.
San Diego: FEMA NFHL flood zones: 14 features intersect this tile.
Walnut Grove: FEMA NFHL flood zones: 11 features intersect this tile.
Wind
San Diego: 6/100 · Walnut Grove: 3/100
San Diego is 3 points higher.
San Diego: Wind exposure derived from ingested design wind / climatology tiles.
Walnut Grove: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
San Diego: 1/100 · Walnut Grove: 0/100
San Diego is 1 points higher.
San Diego: Lightning exposure derived from ingested climatology tiles.
Walnut Grove: Lightning exposure derived from ingested climatology tiles.
Tornado
San Diego: 12/100 · Walnut Grove: 4/100
San Diego is 8 points higher.
San Diego: Tornado risk derived from NOAA SPC historical reports.
Walnut Grove: Tornado risk derived from NOAA SPC historical reports.
Hail
San Diego: 5/100 · Walnut Grove: 0/100
San Diego is 5 points higher.
San Diego: Hail risk derived from NOAA SPC historical reports.
Walnut Grove: Hail risk derived from NOAA SPC historical reports.
Storm surge
San Diego: Unavailable · Walnut Grove: Unavailable
A score difference cannot be calculated without both sources.
San Diego: Storm surge model is not available for this location yet.
Walnut Grove: Storm surge model is not available for this location yet.
Wildfire
San Diego: 69/100 · Walnut Grove: 58/100
San Diego is 11 points higher.
San Diego: Wildfire exposure derived from ingested fire potential tiles.
Walnut Grove: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
San Diego: 24/100 · Walnut Grove: 20/100
San Diego is 4 points higher.
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.
Walnut Grove: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.