City vs city
Duncannon vs Mechanicsburg, PA
Duncannon currently scores 5 points higher overall than Mechanicsburg, with the largest gap in tornado.
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
Duncannon: 42/100 · Mechanicsburg: 37/100
Duncannon is 5 points higher.
Flood
Duncannon: 76/100 · Mechanicsburg: 72/100
Duncannon is 4 points higher.
Duncannon: FEMA NFHL flood zones: 6 features intersect this tile.
Mechanicsburg: FEMA NFHL flood zones: 9 features intersect this tile.
Wind
Duncannon: 20/100 · Mechanicsburg: 20/100
No gap.
Duncannon: Wind exposure derived from ingested design wind / climatology tiles.
Mechanicsburg: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Duncannon: 35/100 · Mechanicsburg: 36/100
Mechanicsburg is 1 points higher.
Duncannon: Lightning exposure derived from ingested climatology tiles.
Mechanicsburg: Lightning exposure derived from ingested climatology tiles.
Tornado
Duncannon: 0/100 · Mechanicsburg: 15/100
Mechanicsburg is 15 points higher.
Duncannon: Tornado risk derived from NOAA SPC historical reports.
Mechanicsburg: Tornado risk derived from NOAA SPC historical reports.
Hail
Duncannon: 37/100 · Mechanicsburg: 29/100
Duncannon is 8 points higher.
Duncannon: Hail risk derived from NOAA SPC historical reports.
Mechanicsburg: Hail risk derived from NOAA SPC historical reports.
Storm surge
Duncannon: Unavailable · Mechanicsburg: Unavailable
A score difference cannot be calculated without both sources.
Duncannon: Storm surge model is not available for this location yet.
Mechanicsburg: Storm surge model is not available for this location yet.
Wildfire
Duncannon: 46/100 · Mechanicsburg: 45/100
Duncannon is 1 points higher.
Duncannon: Wildfire exposure derived from ingested fire potential tiles.
Mechanicsburg: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Duncannon: 39/100 · Mechanicsburg: 39/100
No gap.
Duncannon: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Mechanicsburg: Air quality signal derived from the latest EPA AirNow combined AQI grid.