City vs city
Shell Rock vs Sioux City, IA
Sioux City currently scores 2 points higher overall than Shell Rock, 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 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
Shell Rock: 37/100 · Sioux City: 39/100
Sioux City is 2 points higher.
Flood
Shell Rock: 71/100 · Sioux City: 4/100
Shell Rock is 67 points higher.
Shell Rock: FEMA NFHL flood zones: 9 features intersect this tile.
Sioux City: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Shell Rock: 17/100 · Sioux City: 20/100
Sioux City is 3 points higher.
Shell Rock: Wind exposure derived from ingested design wind / climatology tiles.
Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Shell Rock: 23/100 · Sioux City: 52/100
Sioux City is 29 points higher.
Shell Rock: Lightning exposure derived from ingested climatology tiles.
Sioux City: Lightning exposure derived from ingested climatology tiles.
Tornado
Shell Rock: 0/100 · Sioux City: 38/100
Sioux City is 38 points higher.
Shell Rock: Tornado risk derived from NOAA SPC historical reports.
Sioux City: Tornado risk derived from NOAA SPC historical reports.
Hail
Shell Rock: 56/100 · Sioux City: 86/100
Sioux City is 30 points higher.
Shell Rock: Hail risk derived from NOAA SPC historical reports.
Sioux City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Shell Rock: Unavailable · Sioux City: Unavailable
A score difference cannot be calculated without both sources.
Shell Rock: Storm surge model is not available for this location yet.
Sioux City: Storm surge model is not available for this location yet.
Wildfire
Shell Rock: 35/100 · Sioux City: 48/100
Sioux City is 13 points higher.
Shell Rock: Wildfire exposure derived from ingested fire potential tiles.
Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Shell Rock: 21/100 · Sioux City: 26/100
Sioux City is 5 points higher.
Shell Rock: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Sioux City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.