City vs city
Grafton vs St. Thomas, ND
Grafton currently scores 2 points higher overall than St. Thomas, with the largest gap in flood.
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
Grafton: 30/100 · St. Thomas: 28/100
Grafton is 2 points higher.
Flood
Grafton: 81/100 · St. Thomas: 47/100
Grafton is 34 points higher.
Grafton: FEMA NFHL flood zones: 12 features intersect this tile.
St. Thomas: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Grafton: 18/100 · St. Thomas: 17/100
Grafton is 1 points higher.
Grafton: Wind exposure derived from ingested design wind / climatology tiles.
St. Thomas: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grafton: 26/100 · St. Thomas: 25/100
Grafton is 1 points higher.
Grafton: Lightning exposure derived from ingested climatology tiles.
St. Thomas: Lightning exposure derived from ingested climatology tiles.
Tornado
Grafton: 15/100 · St. Thomas: 4/100
Grafton is 11 points higher.
Grafton: Tornado risk derived from NOAA SPC historical reports.
St. Thomas: Tornado risk derived from NOAA SPC historical reports.
Hail
Grafton: 38/100 · St. Thomas: 62/100
St. Thomas is 24 points higher.
Grafton: Hail risk derived from NOAA SPC historical reports.
St. Thomas: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grafton: Unavailable · St. Thomas: Unavailable
A score difference cannot be calculated without both sources.
Grafton: Storm surge model is not available for this location yet.
St. Thomas: Storm surge model is not available for this location yet.
Wildfire
Grafton: 20/100 · St. Thomas: 33/100
St. Thomas is 13 points higher.
Grafton: Wildfire exposure derived from ingested fire potential tiles.
St. Thomas: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grafton: 11/100 · St. Thomas: 9/100
Grafton is 2 points higher.
Grafton: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
St. Thomas: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.