City vs city
Portage vs Prairie du Sac, WI
Portage and Prairie du Sac are tied on overall score, with the biggest factor difference 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
Portage: 43/100 · Prairie du Sac: 43/100
No gap.
Flood
Portage: 95/100 · Prairie du Sac: 74/100
Portage is 21 points higher.
Portage: FEMA NFHL flood zones: 19 features intersect this tile.
Prairie du Sac: FEMA NFHL flood zones: 15 features intersect this tile.
Wind
Portage: 15/100 · Prairie du Sac: 16/100
Prairie du Sac is 1 points higher.
Portage: Wind exposure derived from ingested design wind / climatology tiles.
Prairie du Sac: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Portage: 28/100 · Prairie du Sac: 31/100
Prairie du Sac is 3 points higher.
Portage: Lightning exposure derived from ingested climatology tiles.
Prairie du Sac: Lightning exposure derived from ingested climatology tiles.
Tornado
Portage: 8/100 · Prairie du Sac: 100/100
Prairie du Sac is 92 points higher.
Portage: Tornado risk derived from NOAA SPC historical reports.
Prairie du Sac: Tornado risk derived from NOAA SPC historical reports.
Hail
Portage: 73/100 · Prairie du Sac: 46/100
Portage is 27 points higher.
Portage: Hail risk derived from NOAA SPC historical reports.
Prairie du Sac: Hail risk derived from NOAA SPC historical reports.
Storm surge
Portage: Unavailable · Prairie du Sac: Unavailable
A score difference cannot be calculated without both sources.
Portage: Storm surge model is not available for this location yet.
Prairie du Sac: Storm surge model is not available for this location yet.
Wildfire
Portage: 67/100 · Prairie du Sac: 18/100
Portage is 49 points higher.
Portage: Wildfire exposure derived from ingested fire potential tiles.
Prairie du Sac: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Portage: 18/100 · Prairie du Sac: 18/100
No gap.
Portage: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Prairie du Sac: Air quality signal derived from the latest EPA AirNow combined AQI grid.