City vs city
Iowa City vs Lewis, IA
Lewis currently scores 4 points higher overall than Iowa City, 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
Iowa City: 48/100 · Lewis: 52/100
Lewis is 4 points higher.
Flood
Iowa City: 64/100 · Lewis: 68/100
Lewis is 4 points higher.
Iowa City: FEMA NFHL flood zones: 13 features intersect this tile.
Lewis: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Iowa City: 17/100 · Lewis: 19/100
Lewis is 2 points higher.
Iowa City: Wind exposure derived from ingested design wind / climatology tiles.
Lewis: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Iowa City: 47/100 · Lewis: 60/100
Lewis is 13 points higher.
Iowa City: Lightning exposure derived from ingested climatology tiles.
Lewis: Lightning exposure derived from ingested climatology tiles.
Tornado
Iowa City: 38/100 · Lewis: 58/100
Lewis is 20 points higher.
Iowa City: Tornado risk derived from NOAA SPC historical reports.
Lewis: Tornado risk derived from NOAA SPC historical reports.
Hail
Iowa City: 100/100 · Lewis: 100/100
No gap.
Iowa City: Hail risk derived from NOAA SPC historical reports.
Lewis: Hail risk derived from NOAA SPC historical reports.
Storm surge
Iowa City: Unavailable · Lewis: Unavailable
A score difference cannot be calculated without both sources.
Iowa City: Storm surge model is not available for this location yet.
Lewis: Storm surge model is not available for this location yet.
Wildfire
Iowa City: 43/100 · Lewis: 34/100
Iowa City is 9 points higher.
Iowa City: Wildfire exposure derived from ingested fire potential tiles.
Lewis: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Iowa City: 24/100 · Lewis: 24/100
No gap.
Iowa City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Lewis: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.