City vs city
Porcupine vs Watertown, SD
Watertown currently scores 11 points higher overall than Porcupine, with the largest gap in wildfire.
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 · Watertown: 50/100
Watertown is 11 points higher.
Flood
Porcupine: Unavailable · Watertown: 79/100
A score difference cannot be calculated without both sources.
Porcupine: Flood model is not available for this location yet.
Watertown: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Porcupine: 20/100 · Watertown: 20/100
No gap.
Porcupine: Wind exposure derived from ingested design wind / climatology tiles.
Watertown: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Porcupine: 39/100 · Watertown: 42/100
Watertown is 3 points higher.
Porcupine: Lightning exposure derived from ingested climatology tiles.
Watertown: Lightning exposure derived from ingested climatology tiles.
Tornado
Porcupine: 0/100 · Watertown: 0/100
No gap.
Porcupine: Tornado risk derived from NOAA SPC historical reports.
Watertown: Tornado risk derived from NOAA SPC historical reports.
Hail
Porcupine: 68/100 · Watertown: 100/100
Watertown is 32 points higher.
Porcupine: Hail risk derived from NOAA SPC historical reports.
Watertown: Hail risk derived from NOAA SPC historical reports.
Storm surge
Porcupine: Unavailable · Watertown: Unavailable
A score difference cannot be calculated without both sources.
Porcupine: Storm surge model is not available for this location yet.
Watertown: Storm surge model is not available for this location yet.
Wildfire
Porcupine: 75/100 · Watertown: 38/100
Porcupine is 37 points higher.
Porcupine: Wildfire exposure derived from ingested fire potential tiles.
Watertown: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Porcupine: 33/100 · Watertown: 21/100
Porcupine is 12 points higher.
Porcupine: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Watertown: Air quality signal derived from the latest EPA AirNow combined AQI grid.