City vs city
Challis vs Sun Valley, ID
Sun Valley currently scores 7 points higher overall than Challis, 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
Challis: 13/100 · Sun Valley: 20/100
Sun Valley is 7 points higher.
Flood
Challis: Unavailable · Sun Valley: 24/100
A score difference cannot be calculated without both sources.
Challis: Flood model is not available for this location yet.
Sun Valley: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Challis: 13/100 · Sun Valley: 12/100
Challis is 1 points higher.
Challis: Wind exposure derived from ingested design wind / climatology tiles.
Sun Valley: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Challis: 6/100 · Sun Valley: 8/100
Sun Valley is 2 points higher.
Challis: Lightning exposure derived from ingested climatology tiles.
Sun Valley: Lightning exposure derived from ingested climatology tiles.
Tornado
Challis: 4/100 · Sun Valley: 0/100
Challis is 4 points higher.
Challis: Tornado risk derived from NOAA SPC historical reports.
Sun Valley: Tornado risk derived from NOAA SPC historical reports.
Hail
Challis: 3/100 · Sun Valley: 9/100
Sun Valley is 6 points higher.
Challis: Hail risk derived from NOAA SPC historical reports.
Sun Valley: Hail risk derived from NOAA SPC historical reports.
Storm surge
Challis: Unavailable · Sun Valley: Unavailable
A score difference cannot be calculated without both sources.
Challis: Storm surge model is not available for this location yet.
Sun Valley: Storm surge model is not available for this location yet.
Wildfire
Challis: 48/100 · Sun Valley: 48/100
No gap.
Challis: Wildfire exposure derived from ingested fire potential tiles.
Sun Valley: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Challis: 19/100 · Sun Valley: 21/100
Sun Valley is 2 points higher.
Challis: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Sun Valley: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.