City vs city
Atlas vs Harrisburg, PA
Harrisburg currently scores 13 points higher overall than Atlas, 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
Atlas: 37/100 · Harrisburg: 50/100
Harrisburg is 13 points higher.
Flood
Atlas: 64/100 · Harrisburg: 98/100
Harrisburg is 34 points higher.
Atlas: FEMA NFHL flood zones: 6 features intersect this tile.
Harrisburg: FEMA NFHL flood zones: 11 features intersect this tile.
Wind
Atlas: 20/100 · Harrisburg: 20/100
No gap.
Atlas: Wind exposure derived from ingested design wind / climatology tiles.
Harrisburg: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Atlas: 32/100 · Harrisburg: 38/100
Harrisburg is 6 points higher.
Atlas: Lightning exposure derived from ingested climatology tiles.
Harrisburg: Lightning exposure derived from ingested climatology tiles.
Tornado
Atlas: 0/100 · Harrisburg: 38/100
Harrisburg is 38 points higher.
Atlas: Tornado risk derived from NOAA SPC historical reports.
Harrisburg: Tornado risk derived from NOAA SPC historical reports.
Hail
Atlas: 18/100 · Harrisburg: 72/100
Harrisburg is 54 points higher.
Atlas: Hail risk derived from NOAA SPC historical reports.
Harrisburg: Hail risk derived from NOAA SPC historical reports.
Storm surge
Atlas: Unavailable · Harrisburg: Unavailable
A score difference cannot be calculated without both sources.
Atlas: Storm surge model is not available for this location yet.
Harrisburg: Storm surge model is not available for this location yet.
Wildfire
Atlas: 47/100 · Harrisburg: 43/100
Atlas is 4 points higher.
Atlas: Wildfire exposure derived from ingested fire potential tiles.
Harrisburg: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Atlas: 41/100 · Harrisburg: 40/100
Atlas is 1 points higher.
Atlas: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Harrisburg: Air quality signal derived from the latest EPA AirNow combined AQI grid.