City vs city
Irene vs Viborg, SD
Viborg currently scores 3 points higher overall than Irene, 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 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
Irene: 36/100 · Viborg: 39/100
Viborg is 3 points higher.
Flood
Irene: 44/100 · Viborg: 60/100
Viborg is 16 points higher.
Irene: FEMA NFHL flood zones: 8 features intersect this tile.
Viborg: FEMA NFHL flood zones: 15 features intersect this tile.
Wind
Irene: 20/100 · Viborg: 20/100
No gap.
Irene: Wind exposure derived from ingested design wind / climatology tiles.
Viborg: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Irene: 35/100 · Viborg: 37/100
Viborg is 2 points higher.
Irene: Lightning exposure derived from ingested climatology tiles.
Viborg: Lightning exposure derived from ingested climatology tiles.
Tornado
Irene: 23/100 · Viborg: 27/100
Viborg is 4 points higher.
Irene: Tornado risk derived from NOAA SPC historical reports.
Viborg: Tornado risk derived from NOAA SPC historical reports.
Hail
Irene: 58/100 · Viborg: 61/100
Viborg is 3 points higher.
Irene: Hail risk derived from NOAA SPC historical reports.
Viborg: Hail risk derived from NOAA SPC historical reports.
Storm surge
Irene: Unavailable · Viborg: Unavailable
A score difference cannot be calculated without both sources.
Irene: Storm surge model is not available for this location yet.
Viborg: Storm surge model is not available for this location yet.
Wildfire
Irene: 47/100 · Viborg: 47/100
No gap.
Irene: Wildfire exposure derived from ingested fire potential tiles.
Viborg: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Irene: 22/100 · Viborg: 22/100
No gap.
Irene: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Viborg: Air quality signal derived from the latest EPA AirNow combined AQI grid.