City vs city
Cheyney vs Herndon, PA
Herndon currently scores 7 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 · Herndon: 43/100
Herndon is 7 points higher.
Flood
Cheyney: 64/100 · Herndon: 100/100
Herndon is 36 points higher.
Cheyney: FEMA NFHL flood zones: 6 features intersect this tile.
Herndon: FEMA NFHL flood zones: 12 features intersect this tile.
Wind
Cheyney: 22/100 · Herndon: 20/100
Cheyney is 2 points higher.
Cheyney: Wind exposure derived from ingested design wind / climatology tiles.
Herndon: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Cheyney: 42/100 · Herndon: 28/100
Cheyney is 14 points higher.
Cheyney: Lightning exposure derived from ingested climatology tiles.
Herndon: Lightning exposure derived from ingested climatology tiles.
Tornado
Cheyney: 19/100 · Herndon: 12/100
Cheyney is 7 points higher.
Cheyney: Tornado risk derived from NOAA SPC historical reports.
Herndon: Tornado risk derived from NOAA SPC historical reports.
Hail
Cheyney: 23/100 · Herndon: 52/100
Herndon is 29 points higher.
Cheyney: Hail risk derived from NOAA SPC historical reports.
Herndon: Hail risk derived from NOAA SPC historical reports.
Storm surge
Cheyney: Unavailable · Herndon: Unavailable
A score difference cannot be calculated without both sources.
Cheyney: Storm surge model is not available for this location yet.
Herndon: Storm surge model is not available for this location yet.
Wildfire
Cheyney: 43/100 · Herndon: 49/100
Herndon is 6 points higher.
Cheyney: Wildfire exposure derived from ingested fire potential tiles.
Herndon: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Cheyney: 41/100 · Herndon: 40/100
Cheyney 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.
Herndon: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.