City vs city
Chelsea vs Napoleon, MI
Chelsea currently scores 6 points higher overall than Napoleon, 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
Chelsea: 38/100 · Napoleon: 32/100
Chelsea is 6 points higher.
Flood
Chelsea: 54/100 · Napoleon: 63/100
Napoleon is 9 points higher.
Chelsea: FEMA NFHL flood zones: 4 features intersect this tile.
Napoleon: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Chelsea: 16/100 · Napoleon: 16/100
No gap.
Chelsea: Wind exposure derived from ingested design wind / climatology tiles.
Napoleon: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Chelsea: 47/100 · Napoleon: 48/100
Napoleon is 1 points higher.
Chelsea: Lightning exposure derived from ingested climatology tiles.
Napoleon: Lightning exposure derived from ingested climatology tiles.
Tornado
Chelsea: 31/100 · Napoleon: 15/100
Chelsea is 16 points higher.
Chelsea: Tornado risk derived from NOAA SPC historical reports.
Napoleon: Tornado risk derived from NOAA SPC historical reports.
Hail
Chelsea: 65/100 · Napoleon: 14/100
Chelsea is 51 points higher.
Chelsea: Hail risk derived from NOAA SPC historical reports.
Napoleon: Hail risk derived from NOAA SPC historical reports.
Storm surge
Chelsea: Unavailable · Napoleon: Unavailable
A score difference cannot be calculated without both sources.
Chelsea: Storm surge model is not available for this location yet.
Napoleon: Storm surge model is not available for this location yet.
Wildfire
Chelsea: 26/100 · Napoleon: 40/100
Napoleon is 14 points higher.
Chelsea: Wildfire exposure derived from ingested fire potential tiles.
Napoleon: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Chelsea: 30/100 · Napoleon: 30/100
No gap.
Chelsea: 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.