City vs city
Mount Vernon vs Willow Hill, IL
Mount Vernon and Willow Hill are tied on overall score, with the biggest factor difference 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
Mount Vernon: 29/100 · Willow Hill: 29/100
No gap.
Flood
Mount Vernon: 47/100 · Willow Hill: Unavailable
A score difference cannot be calculated without both sources.
Mount Vernon: FEMA NFHL flood zones: 4 features intersect this tile.
Willow Hill: Flood model is not available for this location yet.
Wind
Mount Vernon: 15/100 · Willow Hill: 15/100
No gap.
Mount Vernon: Wind exposure derived from ingested design wind / climatology tiles.
Willow Hill: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Mount Vernon: 46/100 · Willow Hill: 68/100
Willow Hill is 22 points higher.
Mount Vernon: Lightning exposure derived from ingested climatology tiles.
Willow Hill: Lightning exposure derived from ingested climatology tiles.
Tornado
Mount Vernon: 15/100 · Willow Hill: 54/100
Willow Hill is 39 points higher.
Mount Vernon: Tornado risk derived from NOAA SPC historical reports.
Willow Hill: Tornado risk derived from NOAA SPC historical reports.
Hail
Mount Vernon: 29/100 · Willow Hill: 23/100
Mount Vernon is 6 points higher.
Mount Vernon: Hail risk derived from NOAA SPC historical reports.
Willow Hill: Hail risk derived from NOAA SPC historical reports.
Storm surge
Mount Vernon: Unavailable · Willow Hill: Unavailable
A score difference cannot be calculated without both sources.
Mount Vernon: Storm surge model is not available for this location yet.
Willow Hill: Storm surge model is not available for this location yet.
Wildfire
Mount Vernon: 19/100 · Willow Hill: 12/100
Mount Vernon is 7 points higher.
Mount Vernon: Wildfire exposure derived from ingested fire potential tiles.
Willow Hill: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Mount Vernon: 30/100 · Willow Hill: 30/100
No gap.
Mount Vernon: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Willow Hill: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.