City vs city
Harrisburg vs Marion, IL
Harrisburg currently scores 5 points higher overall than Marion, 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 uses an ingested EPA AirNow snapshot and may not reflect current conditions; 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
Harrisburg: 50/100 · Marion: 45/100
Harrisburg is 5 points higher.
Flood
Harrisburg: 88/100 · Marion: 43/100
Harrisburg is 45 points higher.
Harrisburg: FEMA NFHL flood zones: 14 features intersect this tile.
Marion: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Harrisburg: 15/100 · Marion: 15/100
No gap.
Harrisburg: Wind exposure derived from ingested design wind / climatology tiles.
Marion: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Harrisburg: 47/100 · Marion: 49/100
Marion is 2 points higher.
Harrisburg: Lightning exposure derived from ingested climatology tiles.
Marion: Lightning exposure derived from ingested climatology tiles.
Tornado
Harrisburg: 31/100 · Marion: 50/100
Marion is 19 points higher.
Harrisburg: Tornado risk derived from NOAA SPC historical reports.
Marion: Tornado risk derived from NOAA SPC historical reports.
Hail
Harrisburg: 96/100 · Marion: 100/100
Marion is 4 points higher.
Harrisburg: Hail risk derived from NOAA SPC historical reports.
Marion: Hail risk derived from NOAA SPC historical reports.
Storm surge
Harrisburg: Unavailable · Marion: Unavailable
A score difference cannot be calculated without both sources.
Harrisburg: Storm surge model is not available for this location yet.
Marion: Storm surge model is not available for this location yet.
Wildfire
Harrisburg: 41/100 · Marion: 27/100
Harrisburg is 14 points higher.
Harrisburg: Wildfire exposure derived from ingested fire potential tiles.
Marion: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Harrisburg: 30/100 · Marion: 30/100
No gap.
Harrisburg: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Marion: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.