City vs city
Riverdale vs Underwood, ND
Underwood currently scores 2 points higher overall than Riverdale, with the largest gap in hail.
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
Riverdale: 25/100 · Underwood: 27/100
Underwood is 2 points higher.
Flood
Riverdale: 39/100 · Underwood: 36/100
Riverdale is 3 points higher.
Riverdale: FEMA NFHL flood zones: 2 features intersect this tile.
Underwood: FEMA NFHL flood zones: 1 features intersect this tile.
Wind
Riverdale: 18/100 · Underwood: 18/100
No gap.
Riverdale: Wind exposure derived from ingested design wind / climatology tiles.
Underwood: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Riverdale: 26/100 · Underwood: 27/100
Underwood is 1 points higher.
Riverdale: Lightning exposure derived from ingested climatology tiles.
Underwood: Lightning exposure derived from ingested climatology tiles.
Tornado
Riverdale: 4/100 · Underwood: 4/100
No gap.
Riverdale: Tornado risk derived from NOAA SPC historical reports.
Underwood: Tornado risk derived from NOAA SPC historical reports.
Hail
Riverdale: 19/100 · Underwood: 51/100
Underwood is 32 points higher.
Riverdale: Hail risk derived from NOAA SPC historical reports.
Underwood: Hail risk derived from NOAA SPC historical reports.
Storm surge
Riverdale: Unavailable · Underwood: Unavailable
A score difference cannot be calculated without both sources.
Riverdale: Storm surge model is not available for this location yet.
Underwood: Storm surge model is not available for this location yet.
Wildfire
Riverdale: 30/100 · Underwood: 18/100
Riverdale is 12 points higher.
Riverdale: Wildfire exposure derived from ingested fire potential tiles.
Underwood: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Riverdale: 38/100 · Underwood: 38/100
No gap.
Riverdale: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Underwood: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.