City vs city
Deal Island vs Frederick, MD
Deal Island and Frederick are tied on overall score, with the biggest factor difference 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
Deal Island: 35/100 · Frederick: 35/100
No gap.
Flood
Deal Island: 44/100 · Frederick: 20/100
Deal Island is 24 points higher.
Deal Island: FEMA NFHL flood zones: 11 features intersect this tile.
Frederick: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Deal Island: 25/100 · Frederick: 20/100
Deal Island is 5 points higher.
Deal Island: Wind exposure derived from ingested design wind / climatology tiles.
Frederick: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Deal Island: 27/100 · Frederick: 26/100
Deal Island is 1 points higher.
Deal Island: Lightning exposure derived from ingested climatology tiles.
Frederick: Lightning exposure derived from ingested climatology tiles.
Tornado
Deal Island: 4/100 · Frederick: 15/100
Frederick is 11 points higher.
Deal Island: Tornado risk derived from NOAA SPC historical reports.
Frederick: Tornado risk derived from NOAA SPC historical reports.
Hail
Deal Island: 2/100 · Frederick: 74/100
Frederick is 72 points higher.
Deal Island: Hail risk derived from NOAA SPC historical reports.
Frederick: Hail risk derived from NOAA SPC historical reports.
Storm surge
Deal Island: 85/100 · Frederick: Unavailable
A score difference cannot be calculated without both sources.
Deal Island: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Frederick: Storm surge model is not available for this location yet.
Wildfire
Deal Island: 59/100 · Frederick: 47/100
Deal Island is 12 points higher.
Deal Island: Wildfire exposure derived from ingested fire potential tiles.
Frederick: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Deal Island: 30/100 · Frederick: 42/100
Frederick is 12 points higher.
Deal Island: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Frederick: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.