City vs city
Coleharbor vs Williston, ND
Coleharbor currently scores 4 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
Coleharbor: 39/100 · Williston: 35/100
Coleharbor is 4 points higher.
Flood
Coleharbor: 75/100 · Williston: 41/100
Coleharbor is 34 points higher.
Coleharbor: FEMA NFHL flood zones: 5 features intersect this tile.
Williston: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Coleharbor: 18/100 · Williston: 18/100
No gap.
Coleharbor: Wind exposure derived from ingested design wind / climatology tiles.
Williston: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Coleharbor: 25/100 · Williston: 19/100
Coleharbor is 6 points higher.
Coleharbor: Lightning exposure derived from ingested climatology tiles.
Williston: Lightning exposure derived from ingested climatology tiles.
Tornado
Coleharbor: 0/100 · Williston: 4/100
Williston is 4 points higher.
Coleharbor: Tornado risk derived from NOAA SPC historical reports.
Williston: Tornado risk derived from NOAA SPC historical reports.
Hail
Coleharbor: 44/100 · Williston: 100/100
Williston is 56 points higher.
Coleharbor: Hail risk derived from NOAA SPC historical reports.
Williston: Hail risk derived from NOAA SPC historical reports.
Storm surge
Coleharbor: Unavailable · Williston: Unavailable
A score difference cannot be calculated without both sources.
Coleharbor: Storm surge model is not available for this location yet.
Williston: Storm surge model is not available for this location yet.
Wildfire
Coleharbor: 31/100 · Williston: 37/100
Williston is 6 points higher.
Coleharbor: Wildfire exposure derived from ingested fire potential tiles.
Williston: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Coleharbor: 39/100 · Williston: 23/100
Coleharbor is 16 points higher.
Coleharbor: 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.