City vs city
Pierre vs Watertown, SD
Watertown currently scores 1 points higher overall than Pierre, 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
Pierre: 49/100 · Watertown: 50/100
Watertown is 1 points higher.
Flood
Pierre: 70/100 · Watertown: 79/100
Watertown is 9 points higher.
Pierre: FEMA NFHL flood zones: 9 features intersect this tile.
Watertown: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Pierre: 21/100 · Watertown: 20/100
Pierre is 1 points higher.
Pierre: Wind exposure derived from ingested design wind / climatology tiles.
Watertown: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Pierre: 22/100 · Watertown: 42/100
Watertown is 20 points higher.
Pierre: Lightning exposure derived from ingested climatology tiles.
Watertown: Lightning exposure derived from ingested climatology tiles.
Tornado
Pierre: 58/100 · Watertown: 0/100
Pierre is 58 points higher.
Pierre: Tornado risk derived from NOAA SPC historical reports.
Watertown: Tornado risk derived from NOAA SPC historical reports.
Hail
Pierre: 100/100 · Watertown: 100/100
No gap.
Pierre: Hail risk derived from NOAA SPC historical reports.
Watertown: Hail risk derived from NOAA SPC historical reports.
Storm surge
Pierre: Unavailable · Watertown: Unavailable
A score difference cannot be calculated without both sources.
Pierre: Storm surge model is not available for this location yet.
Watertown: Storm surge model is not available for this location yet.
Wildfire
Pierre: 47/100 · Watertown: 38/100
Pierre is 9 points higher.
Pierre: Wildfire exposure derived from ingested fire potential tiles.
Watertown: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Pierre: 26/100 · Watertown: 21/100
Pierre is 5 points higher.
Pierre: 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.