City vs city
Shell Valley vs St. John, ND
St. John currently scores 5 points higher overall than Shell Valley, 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
Shell Valley: 29/100 · St. John: 34/100
St. John is 5 points higher.
Flood
Shell Valley: 36/100 · St. John: 36/100
No gap.
Shell Valley: FEMA NFHL flood zones: 1 features intersect this tile.
St. John: FEMA NFHL flood zones: 1 features intersect this tile.
Wind
Shell Valley: 18/100 · St. John: 18/100
No gap.
Shell Valley: Wind exposure derived from ingested design wind / climatology tiles.
St. John: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Shell Valley: 6/100 · St. John: 6/100
No gap.
Shell Valley: Lightning exposure derived from ingested climatology tiles.
St. John: Lightning exposure derived from ingested climatology tiles.
Tornado
Shell Valley: 0/100 · St. John: 0/100
No gap.
Shell Valley: Tornado risk derived from NOAA SPC historical reports.
St. John: Tornado risk derived from NOAA SPC historical reports.
Hail
Shell Valley: 6/100 · St. John: 30/100
St. John is 24 points higher.
Shell Valley: Hail risk derived from NOAA SPC historical reports.
St. John: Hail risk derived from NOAA SPC historical reports.
Storm surge
Shell Valley: Unavailable · St. John: Unavailable
A score difference cannot be calculated without both sources.
Shell Valley: Storm surge model is not available for this location yet.
St. John: Storm surge model is not available for this location yet.
Wildfire
Shell Valley: 72/100 · St. John: 74/100
St. John is 2 points higher.
Shell Valley: Wildfire exposure derived from ingested fire potential tiles.
St. John: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Shell Valley: 38/100 · St. John: 37/100
Shell Valley is 1 points higher.
Shell Valley: 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. John: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.