City vs city
Grand Forks vs Napoleon, ND
Grand Forks currently scores 2 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
Grand Forks: 32/100 · Napoleon: 30/100
Grand Forks is 2 points higher.
Flood
Grand Forks: 41/100 · Napoleon: 8/100
Grand Forks is 33 points higher.
Grand Forks: FEMA NFHL flood zones: 7 features intersect this tile.
Napoleon: FEMA NFHL flood zones: 1 features intersect this tile.
Wind
Grand Forks: 18/100 · Napoleon: 20/100
Napoleon is 2 points higher.
Grand Forks: Wind exposure derived from ingested design wind / climatology tiles.
Napoleon: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grand Forks: 19/100 · Napoleon: 24/100
Napoleon is 5 points higher.
Grand Forks: Lightning exposure derived from ingested climatology tiles.
Napoleon: Lightning exposure derived from ingested climatology tiles.
Tornado
Grand Forks: 4/100 · Napoleon: 23/100
Napoleon is 19 points higher.
Grand Forks: Tornado risk derived from NOAA SPC historical reports.
Napoleon: Tornado risk derived from NOAA SPC historical reports.
Hail
Grand Forks: 100/100 · Napoleon: 100/100
No gap.
Grand Forks: Hail risk derived from NOAA SPC historical reports.
Napoleon: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grand Forks: Unavailable · Napoleon: Unavailable
A score difference cannot be calculated without both sources.
Grand Forks: Storm surge model is not available for this location yet.
Napoleon: Storm surge model is not available for this location yet.
Wildfire
Grand Forks: 27/100 · Napoleon: 24/100
Grand Forks is 3 points higher.
Grand Forks: Wildfire exposure derived from ingested fire potential tiles.
Napoleon: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grand Forks: 14/100 · Napoleon: 14/100
No gap.
Grand Forks: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
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.