City vs city
Herndon vs Sunbury, PA
Herndon currently scores 9 points higher overall than Sunbury, 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
Herndon: 43/100 · Sunbury: 34/100
Herndon is 9 points higher.
Flood
Herndon: 100/100 · Sunbury: 70/100
Herndon is 30 points higher.
Herndon: FEMA NFHL flood zones: 12 features intersect this tile.
Sunbury: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Herndon: 20/100 · Sunbury: 20/100
No gap.
Herndon: Wind exposure derived from ingested design wind / climatology tiles.
Sunbury: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Herndon: 28/100 · Sunbury: 29/100
Sunbury is 1 points higher.
Herndon: Lightning exposure derived from ingested climatology tiles.
Sunbury: Lightning exposure derived from ingested climatology tiles.
Tornado
Herndon: 12/100 · Sunbury: 4/100
Herndon is 8 points higher.
Herndon: Tornado risk derived from NOAA SPC historical reports.
Sunbury: Tornado risk derived from NOAA SPC historical reports.
Hail
Herndon: 52/100 · Sunbury: 11/100
Herndon is 41 points higher.
Herndon: Hail risk derived from NOAA SPC historical reports.
Sunbury: Hail risk derived from NOAA SPC historical reports.
Storm surge
Herndon: Unavailable · Sunbury: Unavailable
A score difference cannot be calculated without both sources.
Herndon: Storm surge model is not available for this location yet.
Sunbury: Storm surge model is not available for this location yet.
Wildfire
Herndon: 49/100 · Sunbury: 50/100
Sunbury is 1 points higher.
Herndon: Wildfire exposure derived from ingested fire potential tiles.
Sunbury: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Herndon: 40/100 · Sunbury: 52/100
Sunbury is 12 points higher.
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.
Sunbury: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.