City vs city
Napoleon vs Williston, ND
Williston currently scores 5 points higher overall than Napoleon, 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 uses an ingested EPA AirNow snapshot and may not reflect current conditions; 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
Napoleon: 30/100 · Williston: 35/100
Williston is 5 points higher.
Flood
Napoleon: 8/100 · Williston: 41/100
Williston is 33 points higher.
Napoleon: FEMA NFHL flood zones: 1 features intersect this tile.
Williston: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Napoleon: 20/100 · Williston: 18/100
Napoleon is 2 points higher.
Napoleon: Wind exposure derived from ingested design wind / climatology tiles.
Williston: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Napoleon: 24/100 · Williston: 19/100
Napoleon is 5 points higher.
Napoleon: Lightning exposure derived from ingested climatology tiles.
Williston: Lightning exposure derived from ingested climatology tiles.
Tornado
Napoleon: 23/100 · Williston: 4/100
Napoleon is 19 points higher.
Napoleon: Tornado risk derived from NOAA SPC historical reports.
Williston: Tornado risk derived from NOAA SPC historical reports.
Hail
Napoleon: 100/100 · Williston: 100/100
No gap.
Napoleon: Hail risk derived from NOAA SPC historical reports.
Williston: Hail risk derived from NOAA SPC historical reports.
Storm surge
Napoleon: Unavailable · Williston: Unavailable
A score difference cannot be calculated without both sources.
Napoleon: Storm surge model is not available for this location yet.
Williston: Storm surge model is not available for this location yet.
Wildfire
Napoleon: 24/100 · Williston: 37/100
Williston is 13 points higher.
Napoleon: Wildfire exposure derived from ingested fire potential tiles.
Williston: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Napoleon: 14/100 · Williston: 23/100
Williston is 9 points higher.
Napoleon: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Williston: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.