City vs city
Carlisle vs Mercersburg, PA
Mercersburg currently scores 2 points higher overall than Carlisle, with the largest gap in lightning.
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
Carlisle: 30/100 · Mercersburg: 32/100
Mercersburg is 2 points higher.
Flood
Carlisle: 60/100 · Mercersburg: 62/100
Mercersburg is 2 points higher.
Carlisle: FEMA NFHL flood zones: 4 features intersect this tile.
Mercersburg: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Carlisle: 20/100 · Mercersburg: 19/100
Carlisle is 1 points higher.
Carlisle: Wind exposure derived from ingested design wind / climatology tiles.
Mercersburg: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Carlisle: 34/100 · Mercersburg: 23/100
Carlisle is 11 points higher.
Carlisle: Lightning exposure derived from ingested climatology tiles.
Mercersburg: Lightning exposure derived from ingested climatology tiles.
Tornado
Carlisle: 4/100 · Mercersburg: 0/100
Carlisle is 4 points higher.
Carlisle: Tornado risk derived from NOAA SPC historical reports.
Mercersburg: Tornado risk derived from NOAA SPC historical reports.
Hail
Carlisle: 10/100 · Mercersburg: 10/100
No gap.
Carlisle: Hail risk derived from NOAA SPC historical reports.
Mercersburg: Hail risk derived from NOAA SPC historical reports.
Storm surge
Carlisle: Unavailable · Mercersburg: Unavailable
A score difference cannot be calculated without both sources.
Carlisle: Storm surge model is not available for this location yet.
Mercersburg: Storm surge model is not available for this location yet.
Wildfire
Carlisle: 45/100 · Mercersburg: 34/100
Carlisle is 11 points higher.
Carlisle: Wildfire exposure derived from ingested fire potential tiles.
Mercersburg: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Carlisle: 38/100 · Mercersburg: 42/100
Mercersburg is 4 points higher.
Carlisle: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Mercersburg: Air quality signal derived from the latest EPA AirNow combined AQI grid.