City vs city
Chester vs Harrisburg, PA
Harrisburg currently scores 4 points higher overall than Chester, 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
Chester: 46/100 · Harrisburg: 50/100
Harrisburg is 4 points higher.
Flood
Chester: 63/100 · Harrisburg: 98/100
Harrisburg is 35 points higher.
Chester: FEMA NFHL flood zones: 18 features intersect this tile.
Harrisburg: FEMA NFHL flood zones: 11 features intersect this tile.
Wind
Chester: 22/100 · Harrisburg: 20/100
Chester is 2 points higher.
Chester: Wind exposure derived from ingested design wind / climatology tiles.
Harrisburg: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Chester: 39/100 · Harrisburg: 38/100
Chester is 1 points higher.
Chester: Lightning exposure derived from ingested climatology tiles.
Harrisburg: Lightning exposure derived from ingested climatology tiles.
Tornado
Chester: 4/100 · Harrisburg: 38/100
Harrisburg is 34 points higher.
Chester: Tornado risk derived from NOAA SPC historical reports.
Harrisburg: Tornado risk derived from NOAA SPC historical reports.
Hail
Chester: 44/100 · Harrisburg: 72/100
Harrisburg is 28 points higher.
Chester: Hail risk derived from NOAA SPC historical reports.
Harrisburg: Hail risk derived from NOAA SPC historical reports.
Storm surge
Chester: 98/100 · Harrisburg: Unavailable
A score difference cannot be calculated without both sources.
Chester: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Harrisburg: Storm surge model is not available for this location yet.
Wildfire
Chester: 56/100 · Harrisburg: 43/100
Chester is 13 points higher.
Chester: Wildfire exposure derived from ingested fire potential tiles.
Harrisburg: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Chester: 41/100 · Harrisburg: 40/100
Chester is 1 points higher.
Chester: 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.