City vs city
Chamberlain vs Gann Valley, SD
Chamberlain currently scores 15 points higher overall than Gann Valley, 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
Chamberlain: 40/100 · Gann Valley: 25/100
Chamberlain is 15 points higher.
Flood
Chamberlain: Unavailable · Gann Valley: Unavailable
A score difference cannot be calculated without both sources.
Chamberlain: Flood model is not available for this location yet.
Gann Valley: Flood model is not available for this location yet.
Wind
Chamberlain: 22/100 · Gann Valley: 22/100
No gap.
Chamberlain: Wind exposure derived from ingested design wind / climatology tiles.
Gann Valley: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Chamberlain: 32/100 · Gann Valley: 36/100
Gann Valley is 4 points higher.
Chamberlain: Lightning exposure derived from ingested climatology tiles.
Gann Valley: Lightning exposure derived from ingested climatology tiles.
Tornado
Chamberlain: 35/100 · Gann Valley: 12/100
Chamberlain is 23 points higher.
Chamberlain: Tornado risk derived from NOAA SPC historical reports.
Gann Valley: Tornado risk derived from NOAA SPC historical reports.
Hail
Chamberlain: 100/100 · Gann Valley: 28/100
Chamberlain is 72 points higher.
Chamberlain: Hail risk derived from NOAA SPC historical reports.
Gann Valley: Hail risk derived from NOAA SPC historical reports.
Storm surge
Chamberlain: Unavailable · Gann Valley: Unavailable
A score difference cannot be calculated without both sources.
Chamberlain: Storm surge model is not available for this location yet.
Gann Valley: Storm surge model is not available for this location yet.
Wildfire
Chamberlain: 50/100 · Gann Valley: 49/100
Chamberlain is 1 points higher.
Chamberlain: Wildfire exposure derived from ingested fire potential tiles.
Gann Valley: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Chamberlain: Unavailable · Gann Valley: Unavailable
A score difference cannot be calculated without both sources.
Chamberlain: Air quality model is not available for this location yet.
Gann Valley: Air quality model is not available for this location yet.