City vs city
Le Mars vs Sergeant Bluff, IA
Le Mars currently scores 12 points higher overall than Sergeant Bluff, with the largest gap in tornado.
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
Le Mars: 53/100 · Sergeant Bluff: 41/100
Le Mars is 12 points higher.
Flood
Le Mars: 55/100 · Sergeant Bluff: 8/100
Le Mars is 47 points higher.
Le Mars: FEMA NFHL flood zones: 5 features intersect this tile.
Sergeant Bluff: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Le Mars: 20/100 · Sergeant Bluff: 20/100
No gap.
Le Mars: Wind exposure derived from ingested design wind / climatology tiles.
Sergeant Bluff: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Le Mars: 49/100 · Sergeant Bluff: 54/100
Sergeant Bluff is 5 points higher.
Le Mars: Lightning exposure derived from ingested climatology tiles.
Sergeant Bluff: Lightning exposure derived from ingested climatology tiles.
Tornado
Le Mars: 85/100 · Sergeant Bluff: 27/100
Le Mars is 58 points higher.
Le Mars: Tornado risk derived from NOAA SPC historical reports.
Sergeant Bluff: Tornado risk derived from NOAA SPC historical reports.
Hail
Le Mars: 100/100 · Sergeant Bluff: 100/100
No gap.
Le Mars: Hail risk derived from NOAA SPC historical reports.
Sergeant Bluff: Hail risk derived from NOAA SPC historical reports.
Storm surge
Le Mars: Unavailable · Sergeant Bluff: Unavailable
A score difference cannot be calculated without both sources.
Le Mars: Storm surge model is not available for this location yet.
Sergeant Bluff: Storm surge model is not available for this location yet.
Wildfire
Le Mars: 36/100 · Sergeant Bluff: 54/100
Sergeant Bluff is 18 points higher.
Le Mars: Wildfire exposure derived from ingested fire potential tiles.
Sergeant Bluff: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Le Mars: 26/100 · Sergeant Bluff: 26/100
No gap.
Le Mars: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Sergeant Bluff: Air quality signal derived from the latest EPA AirNow combined AQI grid.