City vs city
Lewiston vs Nampa, ID
Lewiston currently scores 3 points higher overall than Nampa, with the largest gap in wildfire.
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
Lewiston: 20/100 · Nampa: 17/100
Lewiston is 3 points higher.
Flood
Lewiston: Unavailable · Nampa: 23/100
A score difference cannot be calculated without both sources.
Lewiston: Flood model is not available for this location yet.
Nampa: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Lewiston: 11/100 · Nampa: 11/100
No gap.
Lewiston: Wind exposure derived from ingested design wind / climatology tiles.
Nampa: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Lewiston: 10/100 · Nampa: 7/100
Lewiston is 3 points higher.
Lewiston: Lightning exposure derived from ingested climatology tiles.
Nampa: Lightning exposure derived from ingested climatology tiles.
Tornado
Lewiston: 0/100 · Nampa: 8/100
Nampa is 8 points higher.
Lewiston: Tornado risk derived from NOAA SPC historical reports.
Nampa: Tornado risk derived from NOAA SPC historical reports.
Hail
Lewiston: 17/100 · Nampa: 20/100
Nampa is 3 points higher.
Lewiston: Hail risk derived from NOAA SPC historical reports.
Nampa: Hail risk derived from NOAA SPC historical reports.
Storm surge
Lewiston: Unavailable · Nampa: Unavailable
A score difference cannot be calculated without both sources.
Lewiston: Storm surge model is not available for this location yet.
Nampa: Storm surge model is not available for this location yet.
Wildfire
Lewiston: 57/100 · Nampa: 42/100
Lewiston is 15 points higher.
Lewiston: Wildfire exposure derived from ingested fire potential tiles.
Nampa: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Lewiston: 22/100 · Nampa: 11/100
Lewiston is 11 points higher.
Lewiston: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Nampa: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.