City vs city
Berwyn vs Upper Merion Township, PA
Berwyn currently scores 2 points higher overall than Upper Merion Township, 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
Berwyn: 38/100 · Upper Merion Township: 36/100
Berwyn is 2 points higher.
Flood
Berwyn: 60/100 · Upper Merion Township: 68/100
Upper Merion Township is 8 points higher.
Berwyn: FEMA NFHL flood zones: 6 features intersect this tile.
Upper Merion Township: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Berwyn: 22/100 · Upper Merion Township: 22/100
No gap.
Berwyn: Wind exposure derived from ingested design wind / climatology tiles.
Upper Merion Township: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Berwyn: 40/100 · Upper Merion Township: 39/100
Berwyn is 1 points higher.
Berwyn: Lightning exposure derived from ingested climatology tiles.
Upper Merion Township: Lightning exposure derived from ingested climatology tiles.
Tornado
Berwyn: 0/100 · Upper Merion Township: 15/100
Upper Merion Township is 15 points higher.
Berwyn: Tornado risk derived from NOAA SPC historical reports.
Upper Merion Township: Tornado risk derived from NOAA SPC historical reports.
Hail
Berwyn: 22/100 · Upper Merion Township: 27/100
Upper Merion Township is 5 points higher.
Berwyn: Hail risk derived from NOAA SPC historical reports.
Upper Merion Township: Hail risk derived from NOAA SPC historical reports.
Storm surge
Berwyn: Unavailable · Upper Merion Township: Unavailable
A score difference cannot be calculated without both sources.
Berwyn: Storm surge model is not available for this location yet.
Upper Merion Township: Storm surge model is not available for this location yet.
Wildfire
Berwyn: 40/100 · Upper Merion Township: 44/100
Upper Merion Township is 4 points higher.
Berwyn: Wildfire exposure derived from ingested fire potential tiles.
Upper Merion Township: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Berwyn: 41/100 · Upper Merion Township: 40/100
Berwyn is 1 points higher.
Berwyn: 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 Merion Township: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.