City vs city
Gresham vs Portland, OR
Portland currently scores 4 points higher overall than Gresham, with the largest gap in wildfire.
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
Gresham: 7/100 · Portland: 11/100
Portland is 4 points higher.
Flood
Gresham: 10/100 · Portland: 0/100
Gresham is 10 points higher.
Gresham: FEMA NFHL flood zones: 3 features intersect this tile.
Portland: FEMA NFHL flood zones: 0 features intersect this tile.
Wind
Gresham: 6/100 · Portland: 6/100
No gap.
Gresham: Wind exposure derived from ingested design wind / climatology tiles.
Portland: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Gresham: 1/100 · Portland: 1/100
No gap.
Gresham: Lightning exposure derived from ingested climatology tiles.
Portland: Lightning exposure derived from ingested climatology tiles.
Tornado
Gresham: 4/100 · Portland: 8/100
Portland is 4 points higher.
Gresham: Tornado risk derived from NOAA SPC historical reports.
Portland: Tornado risk derived from NOAA SPC historical reports.
Hail
Gresham: 3/100 · Portland: 3/100
No gap.
Gresham: Hail risk derived from NOAA SPC historical reports.
Portland: Hail risk derived from NOAA SPC historical reports.
Storm surge
Gresham: Unavailable · Portland: Unavailable
A score difference cannot be calculated without both sources.
Gresham: Storm surge model is not available for this location yet.
Portland: Storm surge model is not available for this location yet.
Wildfire
Gresham: 15/100 · Portland: 51/100
Portland is 36 points higher.
Gresham: Wildfire exposure derived from ingested fire potential tiles.
Portland: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Gresham: 11/100 · Portland: 8/100
Gresham is 3 points higher.
Gresham: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Portland: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.