City vs city
Fort Thompson vs Spring Valley Colony, SD
Fort Thompson currently scores 2 points higher overall than Spring Valley Colony, 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 is a current EPA AirNow signal; 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
Fort Thompson: 31/100 · Spring Valley Colony: 29/100
Fort Thompson is 2 points higher.
Flood
Fort Thompson: Unavailable · Spring Valley Colony: Unavailable
A score difference cannot be calculated without both sources.
Fort Thompson: Flood model is not available for this location yet.
Spring Valley Colony: Flood model is not available for this location yet.
Wind
Fort Thompson: 22/100 · Spring Valley Colony: 22/100
No gap.
Fort Thompson: Wind exposure derived from ingested design wind / climatology tiles.
Spring Valley Colony: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Fort Thompson: 27/100 · Spring Valley Colony: 39/100
Spring Valley Colony is 12 points higher.
Fort Thompson: Lightning exposure derived from ingested climatology tiles.
Spring Valley Colony: Lightning exposure derived from ingested climatology tiles.
Tornado
Fort Thompson: 50/100 · Spring Valley Colony: 38/100
Fort Thompson is 12 points higher.
Fort Thompson: Tornado risk derived from NOAA SPC historical reports.
Spring Valley Colony: Tornado risk derived from NOAA SPC historical reports.
Hail
Fort Thompson: 41/100 · Spring Valley Colony: 42/100
Spring Valley Colony is 1 points higher.
Fort Thompson: Hail risk derived from NOAA SPC historical reports.
Spring Valley Colony: Hail risk derived from NOAA SPC historical reports.
Storm surge
Fort Thompson: Unavailable · Spring Valley Colony: Unavailable
A score difference cannot be calculated without both sources.
Fort Thompson: Storm surge model is not available for this location yet.
Spring Valley Colony: Storm surge model is not available for this location yet.
Wildfire
Fort Thompson: 54/100 · Spring Valley Colony: 35/100
Fort Thompson is 19 points higher.
Fort Thompson: Wildfire exposure derived from ingested fire potential tiles.
Spring Valley Colony: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Fort Thompson: 26/100 · Spring Valley Colony: Unavailable
A score difference cannot be calculated without both sources.
Fort Thompson: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Spring Valley Colony: Air quality model is not available for this location yet.