City vs city
Cheyney vs Palmyra, PA
Palmyra currently scores 1 points higher overall than Cheyney, with the largest gap in flood.
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
Cheyney: 36/100 · Palmyra: 37/100
Palmyra is 1 points higher.
Flood
Cheyney: 64/100 · Palmyra: 74/100
Palmyra is 10 points higher.
Cheyney: FEMA NFHL flood zones: 6 features intersect this tile.
Palmyra: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Cheyney: 22/100 · Palmyra: 20/100
Cheyney is 2 points higher.
Cheyney: Wind exposure derived from ingested design wind / climatology tiles.
Palmyra: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Cheyney: 42/100 · Palmyra: 40/100
Cheyney is 2 points higher.
Cheyney: Lightning exposure derived from ingested climatology tiles.
Palmyra: Lightning exposure derived from ingested climatology tiles.
Tornado
Cheyney: 19/100 · Palmyra: 23/100
Palmyra is 4 points higher.
Cheyney: Tornado risk derived from NOAA SPC historical reports.
Palmyra: Tornado risk derived from NOAA SPC historical reports.
Hail
Cheyney: 23/100 · Palmyra: 20/100
Cheyney is 3 points higher.
Cheyney: Hail risk derived from NOAA SPC historical reports.
Palmyra: Hail risk derived from NOAA SPC historical reports.
Storm surge
Cheyney: Unavailable · Palmyra: Unavailable
A score difference cannot be calculated without both sources.
Cheyney: Storm surge model is not available for this location yet.
Palmyra: Storm surge model is not available for this location yet.
Wildfire
Cheyney: 43/100 · Palmyra: 37/100
Cheyney is 6 points higher.
Cheyney: Wildfire exposure derived from ingested fire potential tiles.
Palmyra: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Cheyney: 41/100 · Palmyra: 42/100
Palmyra is 1 points higher.
Cheyney: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Palmyra: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.