City vs city
Dorchester vs Grand Island, NE
Grand Island currently scores 21 points higher overall than Dorchester, 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
Dorchester: 40/100 · Grand Island: 61/100
Grand Island is 21 points higher.
Flood
Dorchester: 49/100 · Grand Island: 54/100
Grand Island is 5 points higher.
Dorchester: FEMA NFHL flood zones: 6 features intersect this tile.
Grand Island: FEMA NFHL flood zones: 12 features intersect this tile.
Wind
Dorchester: 19/100 · Grand Island: 19/100
No gap.
Dorchester: Wind exposure derived from ingested design wind / climatology tiles.
Grand Island: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Dorchester: 37/100 · Grand Island: 50/100
Grand Island is 13 points higher.
Dorchester: Lightning exposure derived from ingested climatology tiles.
Grand Island: Lightning exposure derived from ingested climatology tiles.
Tornado
Dorchester: 12/100 · Grand Island: 100/100
Grand Island is 88 points higher.
Dorchester: Tornado risk derived from NOAA SPC historical reports.
Grand Island: Tornado risk derived from NOAA SPC historical reports.
Hail
Dorchester: 100/100 · Grand Island: 100/100
No gap.
Dorchester: Hail risk derived from NOAA SPC historical reports.
Grand Island: Hail risk derived from NOAA SPC historical reports.
Storm surge
Dorchester: Unavailable · Grand Island: Unavailable
A score difference cannot be calculated without both sources.
Dorchester: Storm surge model is not available for this location yet.
Grand Island: Storm surge model is not available for this location yet.
Wildfire
Dorchester: 44/100 · Grand Island: 41/100
Dorchester is 3 points higher.
Dorchester: Wildfire exposure derived from ingested fire potential tiles.
Grand Island: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Dorchester: 17/100 · Grand Island: Unavailable
A score difference cannot be calculated without both sources.
Dorchester: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Grand Island: Air quality model is not available for this location yet.