City vs city
Orrtanna vs Philadelphia, PA
Philadelphia currently scores 2 points higher overall than Orrtanna, 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 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
Orrtanna: 33/100 · Philadelphia: 35/100
Philadelphia is 2 points higher.
Flood
Orrtanna: 72/100 · Philadelphia: 60/100
Orrtanna is 12 points higher.
Orrtanna: FEMA NFHL flood zones: 6 features intersect this tile.
Philadelphia: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Orrtanna: 20/100 · Philadelphia: 22/100
Philadelphia is 2 points higher.
Orrtanna: Wind exposure derived from ingested design wind / climatology tiles.
Philadelphia: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Orrtanna: 29/100 · Philadelphia: 35/100
Philadelphia is 6 points higher.
Orrtanna: Lightning exposure derived from ingested climatology tiles.
Philadelphia: Lightning exposure derived from ingested climatology tiles.
Tornado
Orrtanna: 15/100 · Philadelphia: 8/100
Orrtanna is 7 points higher.
Orrtanna: Tornado risk derived from NOAA SPC historical reports.
Philadelphia: Tornado risk derived from NOAA SPC historical reports.
Hail
Orrtanna: 10/100 · Philadelphia: 18/100
Philadelphia is 8 points higher.
Orrtanna: Hail risk derived from NOAA SPC historical reports.
Philadelphia: Hail risk derived from NOAA SPC historical reports.
Storm surge
Orrtanna: Unavailable · Philadelphia: Unavailable
A score difference cannot be calculated without both sources.
Orrtanna: Storm surge model is not available for this location yet.
Philadelphia: Storm surge model is not available for this location yet.
Wildfire
Orrtanna: 46/100 · Philadelphia: 55/100
Philadelphia is 9 points higher.
Orrtanna: Wildfire exposure derived from ingested fire potential tiles.
Philadelphia: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Orrtanna: 39/100 · Philadelphia: 44/100
Philadelphia is 5 points higher.
Orrtanna: 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.