City vs city
Rock Island vs Silvis, IL
Rock Island currently scores 2 points higher overall than Silvis, 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 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
Rock Island: 40/100 · Silvis: 38/100
Rock Island is 2 points higher.
Flood
Rock Island: 48/100 · Silvis: 54/100
Silvis is 6 points higher.
Rock Island: FEMA NFHL flood zones: 10 features intersect this tile.
Silvis: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Rock Island: 17/100 · Silvis: 17/100
No gap.
Rock Island: Wind exposure derived from ingested design wind / climatology tiles.
Silvis: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Rock Island: 42/100 · Silvis: 42/100
No gap.
Rock Island: Lightning exposure derived from ingested climatology tiles.
Silvis: Lightning exposure derived from ingested climatology tiles.
Tornado
Rock Island: 15/100 · Silvis: 12/100
Rock Island is 3 points higher.
Rock Island: Tornado risk derived from NOAA SPC historical reports.
Silvis: Tornado risk derived from NOAA SPC historical reports.
Hail
Rock Island: 100/100 · Silvis: 86/100
Rock Island is 14 points higher.
Rock Island: Hail risk derived from NOAA SPC historical reports.
Silvis: Hail risk derived from NOAA SPC historical reports.
Storm surge
Rock Island: Unavailable · Silvis: Unavailable
A score difference cannot be calculated without both sources.
Rock Island: Storm surge model is not available for this location yet.
Silvis: Storm surge model is not available for this location yet.
Wildfire
Rock Island: 33/100 · Silvis: 32/100
Rock Island is 1 points higher.
Rock Island: Wildfire exposure derived from ingested fire potential tiles.
Silvis: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Rock Island: 26/100 · Silvis: 26/100
No gap.
Rock Island: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Silvis: Air quality signal derived from the latest EPA AirNow combined AQI grid.