City vs city
Gresham vs Helix, OR
Helix currently scores 10 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 is a current EPA AirNow signal; 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 · Helix: 17/100
Helix is 10 points higher.
Flood
Gresham: 10/100 · Helix: 23/100
Helix is 13 points higher.
Gresham: FEMA NFHL flood zones: 3 features intersect this tile.
Helix: FEMA NFHL flood zones: 1 features intersect this tile.
Wind
Gresham: 6/100 · Helix: 10/100
Helix is 4 points higher.
Gresham: Wind exposure derived from ingested design wind / climatology tiles.
Helix: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Gresham: 1/100 · Helix: 9/100
Helix is 8 points higher.
Gresham: Lightning exposure derived from ingested climatology tiles.
Helix: Lightning exposure derived from ingested climatology tiles.
Tornado
Gresham: 4/100 · Helix: 0/100
Gresham is 4 points higher.
Gresham: Tornado risk derived from NOAA SPC historical reports.
Helix: Tornado risk derived from NOAA SPC historical reports.
Hail
Gresham: 3/100 · Helix: 6/100
Helix is 3 points higher.
Gresham: Hail risk derived from NOAA SPC historical reports.
Helix: Hail risk derived from NOAA SPC historical reports.
Storm surge
Gresham: Unavailable · Helix: Unavailable
A score difference cannot be calculated without both sources.
Gresham: Storm surge model is not available for this location yet.
Helix: Storm surge model is not available for this location yet.
Wildfire
Gresham: 15/100 · Helix: 41/100
Helix is 26 points higher.
Gresham: Wildfire exposure derived from ingested fire potential tiles.
Helix: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Gresham: 11/100 · Helix: 12/100
Helix is 1 points higher.
Gresham: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Helix: Air quality signal derived from the latest EPA AirNow combined AQI grid.