City vs city
Herrin vs Olmsted, IL
Herrin currently scores 2 points higher overall than Olmsted, with the largest gap in hail.
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 · Olmsted: 39/100
Herrin is 2 points higher.
Flood
Herrin: 47/100 · Olmsted: 100/100
Olmsted is 53 points higher.
Herrin: FEMA NFHL flood zones: 3 features intersect this tile.
Olmsted: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Herrin: 15/100 · Olmsted: 15/100
No gap.
Herrin: Wind exposure derived from ingested design wind / climatology tiles.
Olmsted: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Herrin: 49/100 · Olmsted: 46/100
Herrin is 3 points higher.
Herrin: Lightning exposure derived from ingested climatology tiles.
Olmsted: Lightning exposure derived from ingested climatology tiles.
Tornado
Herrin: 15/100 · Olmsted: 27/100
Olmsted is 12 points higher.
Herrin: Tornado risk derived from NOAA SPC historical reports.
Olmsted: Tornado risk derived from NOAA SPC historical reports.
Hail
Herrin: 100/100 · Olmsted: 34/100
Herrin is 66 points higher.
Herrin: Hail risk derived from NOAA SPC historical reports.
Olmsted: Hail risk derived from NOAA SPC historical reports.
Storm surge
Herrin: Unavailable · Olmsted: Unavailable
A score difference cannot be calculated without both sources.
Herrin: Storm surge model is not available for this location yet.
Olmsted: Storm surge model is not available for this location yet.
Wildfire
Herrin: 35/100 · Olmsted: 25/100
Herrin is 10 points higher.
Herrin: Wildfire exposure derived from ingested fire potential tiles.
Olmsted: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Herrin: 29/100 · Olmsted: 23/100
Herrin is 6 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.
Olmsted: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.