City vs city
Hollidaysburg vs Philadelphia, PA
Philadelphia currently scores 2 points higher overall than Hollidaysburg, 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 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
Hollidaysburg: 35/100 · Philadelphia: 37/100
Philadelphia is 2 points higher.
Flood
Hollidaysburg: 68/100 · Philadelphia: 60/100
Hollidaysburg is 8 points higher.
Hollidaysburg: FEMA NFHL flood zones: 8 features intersect this tile.
Philadelphia: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Hollidaysburg: 18/100 · Philadelphia: 22/100
Philadelphia is 4 points higher.
Hollidaysburg: Wind exposure derived from ingested design wind / climatology tiles.
Philadelphia: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Hollidaysburg: 31/100 · Philadelphia: 37/100
Philadelphia is 6 points higher.
Hollidaysburg: Lightning exposure derived from ingested climatology tiles.
Philadelphia: Lightning exposure derived from ingested climatology tiles.
Tornado
Hollidaysburg: 0/100 · Philadelphia: 15/100
Philadelphia is 15 points higher.
Hollidaysburg: Tornado risk derived from NOAA SPC historical reports.
Philadelphia: Tornado risk derived from NOAA SPC historical reports.
Hail
Hollidaysburg: 11/100 · Philadelphia: 43/100
Philadelphia is 32 points higher.
Hollidaysburg: Hail risk derived from NOAA SPC historical reports.
Philadelphia: Hail risk derived from NOAA SPC historical reports.
Storm surge
Hollidaysburg: Unavailable · Philadelphia: Unavailable
A score difference cannot be calculated without both sources.
Hollidaysburg: Storm surge model is not available for this location yet.
Philadelphia: Storm surge model is not available for this location yet.
Wildfire
Hollidaysburg: 47/100 · Philadelphia: 36/100
Hollidaysburg is 11 points higher.
Hollidaysburg: Wildfire exposure derived from ingested fire potential tiles.
Philadelphia: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Hollidaysburg: 37/100 · Philadelphia: 46/100
Philadelphia is 9 points higher.
Hollidaysburg: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Philadelphia: Air quality signal derived from the latest EPA AirNow combined AQI grid.