City vs city
Upham vs Williston, ND
Williston currently scores 7 points higher overall than Upham, 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
Upham: 28/100 · Williston: 35/100
Williston is 7 points higher.
Flood
Upham: 75/100 · Williston: 41/100
Upham is 34 points higher.
Upham: FEMA NFHL flood zones: 3 features intersect this tile.
Williston: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Upham: 18/100 · Williston: 18/100
No gap.
Upham: Wind exposure derived from ingested design wind / climatology tiles.
Williston: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Upham: 13/100 · Williston: 19/100
Williston is 6 points higher.
Upham: Lightning exposure derived from ingested climatology tiles.
Williston: Lightning exposure derived from ingested climatology tiles.
Tornado
Upham: 4/100 · Williston: 4/100
No gap.
Upham: Tornado risk derived from NOAA SPC historical reports.
Williston: Tornado risk derived from NOAA SPC historical reports.
Hail
Upham: 15/100 · Williston: 100/100
Williston is 85 points higher.
Upham: Hail risk derived from NOAA SPC historical reports.
Williston: Hail risk derived from NOAA SPC historical reports.
Storm surge
Upham: Unavailable · Williston: Unavailable
A score difference cannot be calculated without both sources.
Upham: Storm surge model is not available for this location yet.
Williston: Storm surge model is not available for this location yet.
Wildfire
Upham: 34/100 · Williston: 37/100
Williston is 3 points higher.
Upham: Wildfire exposure derived from ingested fire potential tiles.
Williston: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Upham: 40/100 · Williston: 23/100
Upham is 17 points higher.
Upham: 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.