City vs city
Porcupine vs Sioux Falls, SD
Sioux Falls currently scores 11 points higher overall than Porcupine, 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
Porcupine: 39/100 · Sioux Falls: 50/100
Sioux Falls is 11 points higher.
Flood
Porcupine: Unavailable · Sioux Falls: 52/100
A score difference cannot be calculated without both sources.
Porcupine: Flood model is not available for this location yet.
Sioux Falls: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
Porcupine: 20/100 · Sioux Falls: 20/100
No gap.
Porcupine: Wind exposure derived from ingested design wind / climatology tiles.
Sioux Falls: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Porcupine: 39/100 · Sioux Falls: 46/100
Sioux Falls is 7 points higher.
Porcupine: Lightning exposure derived from ingested climatology tiles.
Sioux Falls: Lightning exposure derived from ingested climatology tiles.
Tornado
Porcupine: 0/100 · Sioux Falls: 58/100
Sioux Falls is 58 points higher.
Porcupine: Tornado risk derived from NOAA SPC historical reports.
Sioux Falls: Tornado risk derived from NOAA SPC historical reports.
Hail
Porcupine: 68/100 · Sioux Falls: 100/100
Sioux Falls is 32 points higher.
Porcupine: Hail risk derived from NOAA SPC historical reports.
Sioux Falls: Hail risk derived from NOAA SPC historical reports.
Storm surge
Porcupine: Unavailable · Sioux Falls: Unavailable
A score difference cannot be calculated without both sources.
Porcupine: Storm surge model is not available for this location yet.
Sioux Falls: Storm surge model is not available for this location yet.
Wildfire
Porcupine: 75/100 · Sioux Falls: 51/100
Porcupine is 24 points higher.
Porcupine: Wildfire exposure derived from ingested fire potential tiles.
Sioux Falls: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Porcupine: 33/100 · Sioux Falls: 21/100
Porcupine is 12 points higher.
Porcupine: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Sioux Falls: Air quality signal derived from the latest EPA AirNow combined AQI grid.