City vs city
Riverside vs Twain, CA
Riverside currently scores 2 points higher overall than Twain, 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
Riverside: 27/100 · Twain: 25/100
Riverside is 2 points higher.
Flood
Riverside: 33/100 · Twain: 26/100
Riverside is 7 points higher.
Riverside: FEMA NFHL flood zones: 10 features intersect this tile.
Twain: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Riverside: 5/100 · Twain: 5/100
No gap.
Riverside: Wind exposure derived from ingested design wind / climatology tiles.
Twain: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Riverside: 2/100 · Twain: 2/100
No gap.
Riverside: Lightning exposure derived from ingested climatology tiles.
Twain: Lightning exposure derived from ingested climatology tiles.
Tornado
Riverside: 8/100 · Twain: 0/100
Riverside is 8 points higher.
Riverside: Tornado risk derived from NOAA SPC historical reports.
Twain: Tornado risk derived from NOAA SPC historical reports.
Hail
Riverside: 0/100 · Twain: 1/100
Twain is 1 points higher.
Riverside: Hail risk derived from NOAA SPC historical reports.
Twain: Hail risk derived from NOAA SPC historical reports.
Storm surge
Riverside: Unavailable · Twain: Unavailable
A score difference cannot be calculated without both sources.
Riverside: Storm surge model is not available for this location yet.
Twain: Storm surge model is not available for this location yet.
Wildfire
Riverside: 83/100 · Twain: 97/100
Twain is 14 points higher.
Riverside: Wildfire exposure derived from ingested fire potential tiles.
Twain: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Riverside: 32/100 · Twain: 17/100
Riverside is 15 points higher.
Riverside: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Twain: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.