City vs city
Gretna vs Wann, NE
Gretna currently scores 6 points higher overall than Wann, 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
Gretna: 44/100 · Wann: 38/100
Gretna is 6 points higher.
Flood
Gretna: 44/100 · Wann: 100/100
Wann is 56 points higher.
Gretna: FEMA NFHL flood zones: 6 features intersect this tile.
Wann: FEMA NFHL flood zones: 12 features intersect this tile.
Wind
Gretna: 19/100 · Wann: 19/100
No gap.
Gretna: Wind exposure derived from ingested design wind / climatology tiles.
Wann: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Gretna: 45/100 · Wann: 44/100
Gretna is 1 points higher.
Gretna: Lightning exposure derived from ingested climatology tiles.
Wann: Lightning exposure derived from ingested climatology tiles.
Tornado
Gretna: 31/100 · Wann: 8/100
Gretna is 23 points higher.
Gretna: Tornado risk derived from NOAA SPC historical reports.
Wann: Tornado risk derived from NOAA SPC historical reports.
Hail
Gretna: 100/100 · Wann: 26/100
Gretna is 74 points higher.
Gretna: Hail risk derived from NOAA SPC historical reports.
Wann: Hail risk derived from NOAA SPC historical reports.
Storm surge
Gretna: Unavailable · Wann: Unavailable
A score difference cannot be calculated without both sources.
Gretna: Storm surge model is not available for this location yet.
Wann: Storm surge model is not available for this location yet.
Wildfire
Gretna: 49/100 · Wann: 50/100
Wann is 1 points higher.
Gretna: Wildfire exposure derived from ingested fire potential tiles.
Wann: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Gretna: 19/100 · Wann: 18/100
Gretna is 1 points higher.
Gretna: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Wann: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.