City vs city
Casselton vs Williston, ND
Casselton currently scores 3 points higher overall than Williston, with the largest gap in hail.
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
Casselton: 38/100 · Williston: 35/100
Casselton is 3 points higher.
Flood
Casselton: 41/100 · Williston: 41/100
No gap.
Casselton: FEMA NFHL flood zones: 5 features intersect this tile.
Williston: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Casselton: 19/100 · Williston: 18/100
Casselton is 1 points higher.
Casselton: Wind exposure derived from ingested design wind / climatology tiles.
Williston: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Casselton: 36/100 · Williston: 19/100
Casselton is 17 points higher.
Casselton: Lightning exposure derived from ingested climatology tiles.
Williston: Lightning exposure derived from ingested climatology tiles.
Tornado
Casselton: 35/100 · Williston: 4/100
Casselton is 31 points higher.
Casselton: Tornado risk derived from NOAA SPC historical reports.
Williston: Tornado risk derived from NOAA SPC historical reports.
Hail
Casselton: 66/100 · Williston: 100/100
Williston is 34 points higher.
Casselton: Hail risk derived from NOAA SPC historical reports.
Williston: Hail risk derived from NOAA SPC historical reports.
Storm surge
Casselton: Unavailable · Williston: Unavailable
A score difference cannot be calculated without both sources.
Casselton: Storm surge model is not available for this location yet.
Williston: Storm surge model is not available for this location yet.
Wildfire
Casselton: 33/100 · Williston: 37/100
Williston is 4 points higher.
Casselton: Wildfire exposure derived from ingested fire potential tiles.
Williston: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Casselton: 37/100 · Williston: 23/100
Casselton is 14 points higher.
Casselton: 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.