City vs city
Brookings vs Gann Valley, SD
Brookings currently scores 24 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
Brookings: 49/100 · Gann Valley: 25/100
Brookings is 24 points higher.
Flood
Brookings: 85/100 · Gann Valley: Unavailable
A score difference cannot be calculated without both sources.
Brookings: FEMA NFHL flood zones: 15 features intersect this tile.
Gann Valley: Flood model is not available for this location yet.
Wind
Brookings: 20/100 · Gann Valley: 22/100
Gann Valley is 2 points higher.
Brookings: Wind exposure derived from ingested design wind / climatology tiles.
Gann Valley: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Brookings: 66/100 · Gann Valley: 36/100
Brookings is 30 points higher.
Brookings: Lightning exposure derived from ingested climatology tiles.
Gann Valley: Lightning exposure derived from ingested climatology tiles.
Tornado
Brookings: 19/100 · Gann Valley: 12/100
Brookings is 7 points higher.
Brookings: Tornado risk derived from NOAA SPC historical reports.
Gann Valley: Tornado risk derived from NOAA SPC historical reports.
Hail
Brookings: 91/100 · Gann Valley: 28/100
Brookings is 63 points higher.
Brookings: Hail risk derived from NOAA SPC historical reports.
Gann Valley: Hail risk derived from NOAA SPC historical reports.
Storm surge
Brookings: Unavailable · Gann Valley: Unavailable
A score difference cannot be calculated without both sources.
Brookings: Storm surge model is not available for this location yet.
Gann Valley: Storm surge model is not available for this location yet.
Wildfire
Brookings: 45/100 · Gann Valley: 49/100
Gann Valley is 4 points higher.
Brookings: Wildfire exposure derived from ingested fire potential tiles.
Gann Valley: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Brookings: 19/100 · Gann Valley: Unavailable
A score difference cannot be calculated without both sources.
Brookings: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Gann Valley: Air quality model is not available for this location yet.