City vs city
Herrin vs Marion, IL
Marion currently scores 4 points higher overall than Herrin, 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 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
Herrin: 41/100 · Marion: 45/100
Marion is 4 points higher.
Flood
Herrin: 47/100 · Marion: 43/100
Herrin is 4 points higher.
Herrin: FEMA NFHL flood zones: 3 features intersect this tile.
Marion: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Herrin: 15/100 · Marion: 15/100
No gap.
Herrin: Wind exposure derived from ingested design wind / climatology tiles.
Marion: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Herrin: 49/100 · Marion: 49/100
No gap.
Herrin: Lightning exposure derived from ingested climatology tiles.
Marion: Lightning exposure derived from ingested climatology tiles.
Tornado
Herrin: 15/100 · Marion: 50/100
Marion is 35 points higher.
Herrin: Tornado risk derived from NOAA SPC historical reports.
Marion: Tornado risk derived from NOAA SPC historical reports.
Hail
Herrin: 100/100 · Marion: 100/100
No gap.
Herrin: Hail risk derived from NOAA SPC historical reports.
Marion: Hail risk derived from NOAA SPC historical reports.
Storm surge
Herrin: Unavailable · Marion: Unavailable
A score difference cannot be calculated without both sources.
Herrin: Storm surge model is not available for this location yet.
Marion: Storm surge model is not available for this location yet.
Wildfire
Herrin: 35/100 · Marion: 27/100
Herrin is 8 points higher.
Herrin: Wildfire exposure derived from ingested fire potential tiles.
Marion: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Herrin: 29/100 · Marion: 30/100
Marion is 1 points higher.
Herrin: 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.