City vs city
Simi Valley vs Topanga, CA
Topanga currently scores 1 points higher overall than Simi Valley, 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 is a current EPA AirNow signal; 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
Simi Valley: 26/100 · Topanga: 27/100
Topanga is 1 points higher.
Flood
Simi Valley: 29/100 · Topanga: 52/100
Topanga is 23 points higher.
Simi Valley: FEMA NFHL flood zones: 12 features intersect this tile.
Topanga: FEMA NFHL flood zones: 14 features intersect this tile.
Wind
Simi Valley: 4/100 · Topanga: 4/100
No gap.
Simi Valley: Wind exposure derived from ingested design wind / climatology tiles.
Topanga: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Simi Valley: 0/100 · Topanga: 0/100
No gap.
Simi Valley: Lightning exposure derived from ingested climatology tiles.
Topanga: Lightning exposure derived from ingested climatology tiles.
Tornado
Simi Valley: 0/100 · Topanga: 8/100
Topanga is 8 points higher.
Simi Valley: Tornado risk derived from NOAA SPC historical reports.
Topanga: Tornado risk derived from NOAA SPC historical reports.
Hail
Simi Valley: 6/100 · Topanga: 2/100
Simi Valley is 4 points higher.
Simi Valley: Hail risk derived from NOAA SPC historical reports.
Topanga: Hail risk derived from NOAA SPC historical reports.
Storm surge
Simi Valley: Unavailable · Topanga: Unavailable
A score difference cannot be calculated without both sources.
Simi Valley: Storm surge model is not available for this location yet.
Topanga: Storm surge model is not available for this location yet.
Wildfire
Simi Valley: 72/100 · Topanga: 74/100
Topanga is 2 points higher.
Simi Valley: Wildfire exposure derived from ingested fire potential tiles.
Topanga: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Simi Valley: 17/100 · Topanga: 21/100
Topanga is 4 points higher.
Simi Valley: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Topanga: Air quality signal derived from the latest EPA AirNow combined AQI grid.