City vs city
Alpha vs Rock Island, IL
Rock Island currently scores 13 points higher overall than Alpha, with the largest gap in hail.
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
Alpha: 27/100 · Rock Island: 40/100
Rock Island is 13 points higher.
Flood
Alpha: 33/100 · Rock Island: 48/100
Rock Island is 15 points higher.
Alpha: FEMA NFHL flood zones: 2 features intersect this tile.
Rock Island: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Alpha: 17/100 · Rock Island: 17/100
No gap.
Alpha: Wind exposure derived from ingested design wind / climatology tiles.
Rock Island: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alpha: 47/100 · Rock Island: 42/100
Alpha is 5 points higher.
Alpha: Lightning exposure derived from ingested climatology tiles.
Rock Island: Lightning exposure derived from ingested climatology tiles.
Tornado
Alpha: 19/100 · Rock Island: 15/100
Alpha is 4 points higher.
Alpha: Tornado risk derived from NOAA SPC historical reports.
Rock Island: Tornado risk derived from NOAA SPC historical reports.
Hail
Alpha: 32/100 · Rock Island: 100/100
Rock Island is 68 points higher.
Alpha: Hail risk derived from NOAA SPC historical reports.
Rock Island: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alpha: Unavailable · Rock Island: Unavailable
A score difference cannot be calculated without both sources.
Alpha: Storm surge model is not available for this location yet.
Rock Island: Storm surge model is not available for this location yet.
Wildfire
Alpha: 13/100 · Rock Island: 33/100
Rock Island is 20 points higher.
Alpha: Wildfire exposure derived from ingested fire potential tiles.
Rock Island: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alpha: 26/100 · Rock Island: 26/100
No gap.
Alpha: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Rock Island: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.