City vs city
North River vs Williston, ND
North River currently scores 12 points higher overall than Williston, 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
North River: 47/100 · Williston: 35/100
North River is 12 points higher.
Flood
North River: 100/100 · Williston: 41/100
North River is 59 points higher.
North River: FEMA NFHL flood zones: 19 features intersect this tile.
Williston: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
North River: 19/100 · Williston: 18/100
North River is 1 points higher.
North River: Wind exposure derived from ingested design wind / climatology tiles.
Williston: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
North River: 34/100 · Williston: 19/100
North River is 15 points higher.
North River: Lightning exposure derived from ingested climatology tiles.
Williston: Lightning exposure derived from ingested climatology tiles.
Tornado
North River: 15/100 · Williston: 4/100
North River is 11 points higher.
North River: Tornado risk derived from NOAA SPC historical reports.
Williston: Tornado risk derived from NOAA SPC historical reports.
Hail
North River: 100/100 · Williston: 100/100
No gap.
North River: Hail risk derived from NOAA SPC historical reports.
Williston: Hail risk derived from NOAA SPC historical reports.
Storm surge
North River: Unavailable · Williston: Unavailable
A score difference cannot be calculated without both sources.
North River: Storm surge model is not available for this location yet.
Williston: Storm surge model is not available for this location yet.
Wildfire
North River: 23/100 · Williston: 37/100
Williston is 14 points higher.
North River: Wildfire exposure derived from ingested fire potential tiles.
Williston: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
North River: 37/100 · Williston: 23/100
North River is 14 points higher.
North River: 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.