City vs city
Harrison vs Mount Vernon, IL
Harrison currently scores 13 points higher overall than Mount Vernon, 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
Harrison: 42/100 · Mount Vernon: 29/100
Harrison is 13 points higher.
Flood
Harrison: 43/100 · Mount Vernon: 47/100
Mount Vernon is 4 points higher.
Harrison: FEMA NFHL flood zones: 6 features intersect this tile.
Mount Vernon: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Harrison: 15/100 · Mount Vernon: 15/100
No gap.
Harrison: Wind exposure derived from ingested design wind / climatology tiles.
Mount Vernon: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Harrison: 50/100 · Mount Vernon: 46/100
Harrison is 4 points higher.
Harrison: Lightning exposure derived from ingested climatology tiles.
Mount Vernon: Lightning exposure derived from ingested climatology tiles.
Tornado
Harrison: 23/100 · Mount Vernon: 15/100
Harrison is 8 points higher.
Harrison: Tornado risk derived from NOAA SPC historical reports.
Mount Vernon: Tornado risk derived from NOAA SPC historical reports.
Hail
Harrison: 91/100 · Mount Vernon: 29/100
Harrison is 62 points higher.
Harrison: Hail risk derived from NOAA SPC historical reports.
Mount Vernon: Hail risk derived from NOAA SPC historical reports.
Storm surge
Harrison: Unavailable · Mount Vernon: Unavailable
A score difference cannot be calculated without both sources.
Harrison: Storm surge model is not available for this location yet.
Mount Vernon: Storm surge model is not available for this location yet.
Wildfire
Harrison: 43/100 · Mount Vernon: 19/100
Harrison is 24 points higher.
Harrison: Wildfire exposure derived from ingested fire potential tiles.
Mount Vernon: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Harrison: 26/100 · Mount Vernon: 30/100
Mount Vernon is 4 points higher.
Harrison: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
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.