City vs city
Frederick vs Mercersville, MD
Frederick currently scores 4 points higher overall than Mercersville, 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
Frederick: 35/100 · Mercersville: 31/100
Frederick is 4 points higher.
Flood
Frederick: 20/100 · Mercersville: 12/100
Frederick is 8 points higher.
Frederick: FEMA NFHL flood zones: 3 features intersect this tile.
Mercersville: FEMA NFHL flood zones: 1 features intersect this tile.
Wind
Frederick: 20/100 · Mercersville: 20/100
No gap.
Frederick: Wind exposure derived from ingested design wind / climatology tiles.
Mercersville: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Frederick: 26/100 · Mercersville: 23/100
Frederick is 3 points higher.
Frederick: Lightning exposure derived from ingested climatology tiles.
Mercersville: Lightning exposure derived from ingested climatology tiles.
Tornado
Frederick: 15/100 · Mercersville: 0/100
Frederick is 15 points higher.
Frederick: Tornado risk derived from NOAA SPC historical reports.
Mercersville: Tornado risk derived from NOAA SPC historical reports.
Hail
Frederick: 74/100 · Mercersville: 30/100
Frederick is 44 points higher.
Frederick: Hail risk derived from NOAA SPC historical reports.
Mercersville: Hail risk derived from NOAA SPC historical reports.
Storm surge
Frederick: Unavailable · Mercersville: Unavailable
A score difference cannot be calculated without both sources.
Frederick: Storm surge model is not available for this location yet.
Mercersville: Storm surge model is not available for this location yet.
Wildfire
Frederick: 47/100 · Mercersville: 57/100
Mercersville is 10 points higher.
Frederick: Wildfire exposure derived from ingested fire potential tiles.
Mercersville: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Frederick: 42/100 · Mercersville: 42/100
No gap.
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.
Mercersville: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.