City vs city
Salem vs Spencer, SD
Spencer currently scores 1 points higher overall than Salem, with the largest gap in tornado.
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
Salem: 43/100 · Spencer: 44/100
Spencer is 1 points higher.
Flood
Salem: 41/100 · Spencer: 47/100
Spencer is 6 points higher.
Salem: FEMA NFHL flood zones: 3 features intersect this tile.
Spencer: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Salem: 21/100 · Spencer: 21/100
No gap.
Salem: Wind exposure derived from ingested design wind / climatology tiles.
Spencer: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Salem: 57/100 · Spencer: 57/100
No gap.
Salem: Lightning exposure derived from ingested climatology tiles.
Spencer: Lightning exposure derived from ingested climatology tiles.
Tornado
Salem: 15/100 · Spencer: 50/100
Spencer is 35 points higher.
Salem: Tornado risk derived from NOAA SPC historical reports.
Spencer: Tornado risk derived from NOAA SPC historical reports.
Hail
Salem: 100/100 · Spencer: 71/100
Salem is 29 points higher.
Salem: Hail risk derived from NOAA SPC historical reports.
Spencer: Hail risk derived from NOAA SPC historical reports.
Storm surge
Salem: Unavailable · Spencer: Unavailable
A score difference cannot be calculated without both sources.
Salem: Storm surge model is not available for this location yet.
Spencer: Storm surge model is not available for this location yet.
Wildfire
Salem: 44/100 · Spencer: 42/100
Salem is 2 points higher.
Salem: Wildfire exposure derived from ingested fire potential tiles.
Spencer: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Salem: 21/100 · Spencer: 21/100
No gap.
Salem: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Spencer: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.