City vs city
Brock Hall vs Upper Marlboro, MD
Brock Hall and Upper Marlboro are tied on overall score, with the biggest factor difference in flood.
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
Brock Hall: 38/100 · Upper Marlboro: 38/100
No gap.
Flood
Brock Hall: 27/100 · Upper Marlboro: 27/100
No gap.
Brock Hall: FEMA NFHL flood zones: 6 features intersect this tile.
Upper Marlboro: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Brock Hall: 21/100 · Upper Marlboro: 21/100
No gap.
Brock Hall: Wind exposure derived from ingested design wind / climatology tiles.
Upper Marlboro: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Brock Hall: 40/100 · Upper Marlboro: 40/100
No gap.
Brock Hall: Lightning exposure derived from ingested climatology tiles.
Upper Marlboro: Lightning exposure derived from ingested climatology tiles.
Tornado
Brock Hall: 15/100 · Upper Marlboro: 15/100
No gap.
Brock Hall: Tornado risk derived from NOAA SPC historical reports.
Upper Marlboro: Tornado risk derived from NOAA SPC historical reports.
Hail
Brock Hall: 29/100 · Upper Marlboro: 29/100
No gap.
Brock Hall: Hail risk derived from NOAA SPC historical reports.
Upper Marlboro: Hail risk derived from NOAA SPC historical reports.
Storm surge
Brock Hall: 80/100 · Upper Marlboro: 80/100
No gap.
Brock Hall: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Upper Marlboro: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Brock Hall: 47/100 · Upper Marlboro: 47/100
No gap.
Brock Hall: Wildfire exposure derived from ingested fire potential tiles.
Upper Marlboro: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Brock Hall: 44/100 · Upper Marlboro: 44/100
No gap.
Brock Hall: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Upper Marlboro: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.