City vs city
Denison vs Harlan, IA
Denison currently scores 4 points higher overall than Harlan, 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
Denison: 48/100 · Harlan: 44/100
Denison is 4 points higher.
Flood
Denison: 57/100 · Harlan: 63/100
Harlan is 6 points higher.
Denison: FEMA NFHL flood zones: 8 features intersect this tile.
Harlan: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Denison: 19/100 · Harlan: 19/100
No gap.
Denison: Wind exposure derived from ingested design wind / climatology tiles.
Harlan: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Denison: 62/100 · Harlan: 56/100
Denison is 6 points higher.
Denison: Lightning exposure derived from ingested climatology tiles.
Harlan: Lightning exposure derived from ingested climatology tiles.
Tornado
Denison: 50/100 · Harlan: 23/100
Denison is 27 points higher.
Denison: Tornado risk derived from NOAA SPC historical reports.
Harlan: Tornado risk derived from NOAA SPC historical reports.
Hail
Denison: 100/100 · Harlan: 93/100
Denison is 7 points higher.
Denison: Hail risk derived from NOAA SPC historical reports.
Harlan: Hail risk derived from NOAA SPC historical reports.
Storm surge
Denison: Unavailable · Harlan: Unavailable
A score difference cannot be calculated without both sources.
Denison: Storm surge model is not available for this location yet.
Harlan: Storm surge model is not available for this location yet.
Wildfire
Denison: 31/100 · Harlan: 32/100
Harlan is 1 points higher.
Denison: Wildfire exposure derived from ingested fire potential tiles.
Harlan: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Denison: 19/100 · Harlan: 19/100
No gap.
Denison: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Harlan: Air quality signal derived from the latest EPA AirNow combined AQI grid.