City vs city
Blackhawk vs Walnut Creek, CA
Blackhawk currently scores 6 points higher overall than Walnut Creek, 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
Blackhawk: 30/100 · Walnut Creek: 24/100
Blackhawk is 6 points higher.
Flood
Blackhawk: 28/100 · Walnut Creek: 33/100
Walnut Creek is 5 points higher.
Blackhawk: FEMA NFHL flood zones: 10 features intersect this tile.
Walnut Creek: FEMA NFHL flood zones: 28 features intersect this tile.
Wind
Blackhawk: 2/100 · Walnut Creek: 2/100
No gap.
Blackhawk: Wind exposure derived from ingested design wind / climatology tiles.
Walnut Creek: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Blackhawk: 0/100 · Walnut Creek: 0/100
No gap.
Blackhawk: Lightning exposure derived from ingested climatology tiles.
Walnut Creek: Lightning exposure derived from ingested climatology tiles.
Tornado
Blackhawk: 0/100 · Walnut Creek: 8/100
Walnut Creek is 8 points higher.
Blackhawk: Tornado risk derived from NOAA SPC historical reports.
Walnut Creek: Tornado risk derived from NOAA SPC historical reports.
Hail
Blackhawk: 4/100 · Walnut Creek: 10/100
Walnut Creek is 6 points higher.
Blackhawk: Hail risk derived from NOAA SPC historical reports.
Walnut Creek: Hail risk derived from NOAA SPC historical reports.
Storm surge
Blackhawk: Unavailable · Walnut Creek: Unavailable
A score difference cannot be calculated without both sources.
Blackhawk: Storm surge model is not available for this location yet.
Walnut Creek: Storm surge model is not available for this location yet.
Wildfire
Blackhawk: 90/100 · Walnut Creek: 69/100
Blackhawk is 21 points higher.
Blackhawk: Wildfire exposure derived from ingested fire potential tiles.
Walnut Creek: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Blackhawk: 24/100 · Walnut Creek: 24/100
No gap.
Blackhawk: 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 Creek: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.