City vs city
Chisholm vs South Portland, ME
South Portland currently scores 11 points higher overall than Chisholm, 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
Chisholm: 22/100 · South Portland: 33/100
South Portland is 11 points higher.
Flood
Chisholm: 23/100 · South Portland: 39/100
South Portland is 16 points higher.
Chisholm: FEMA NFHL flood zones: 9 features intersect this tile.
South Portland: FEMA NFHL flood zones: 16 features intersect this tile.
Wind
Chisholm: 17/100 · South Portland: 20/100
South Portland is 3 points higher.
Chisholm: Wind exposure derived from ingested design wind / climatology tiles.
South Portland: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Chisholm: 9/100 · South Portland: 4/100
Chisholm is 5 points higher.
Chisholm: Lightning exposure derived from ingested climatology tiles.
South Portland: Lightning exposure derived from ingested climatology tiles.
Tornado
Chisholm: 0/100 · South Portland: 0/100
No gap.
Chisholm: Tornado risk derived from NOAA SPC historical reports.
South Portland: Tornado risk derived from NOAA SPC historical reports.
Hail
Chisholm: 19/100 · South Portland: 31/100
South Portland is 12 points higher.
Chisholm: Hail risk derived from NOAA SPC historical reports.
South Portland: Hail risk derived from NOAA SPC historical reports.
Storm surge
Chisholm: Unavailable · South Portland: 99/100
A score difference cannot be calculated without both sources.
Chisholm: Storm surge model is not available for this location yet.
South Portland: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Chisholm: 38/100 · South Portland: 9/100
Chisholm is 29 points higher.
Chisholm: Wildfire exposure derived from ingested fire potential tiles.
South Portland: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Chisholm: 24/100 · South Portland: 26/100
South Portland is 2 points higher.
Chisholm: Air quality signal derived from the latest EPA AirNow combined AQI grid.
South Portland: Air quality signal derived from the latest EPA AirNow combined AQI grid.