City vs city
Grand Mound vs Rochester, WA
Grand Mound and Rochester are tied on overall score, with the biggest factor difference 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
Grand Mound: 21/100 · Rochester: 21/100
No gap.
Flood
Grand Mound: 28/100 · Rochester: 28/100
No gap.
Grand Mound: FEMA NFHL flood zones: 10 features intersect this tile.
Rochester: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Grand Mound: 6/100 · Rochester: 6/100
No gap.
Grand Mound: Wind exposure derived from ingested design wind / climatology tiles.
Rochester: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grand Mound: 1/100 · Rochester: 1/100
No gap.
Grand Mound: Lightning exposure derived from ingested climatology tiles.
Rochester: Lightning exposure derived from ingested climatology tiles.
Tornado
Grand Mound: 0/100 · Rochester: 0/100
No gap.
Grand Mound: Tornado risk derived from NOAA SPC historical reports.
Rochester: Tornado risk derived from NOAA SPC historical reports.
Hail
Grand Mound: 0/100 · Rochester: 0/100
No gap.
Grand Mound: Hail risk derived from NOAA SPC historical reports.
Rochester: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grand Mound: Unavailable · Rochester: Unavailable
A score difference cannot be calculated without both sources.
Grand Mound: Storm surge model is not available for this location yet.
Rochester: Storm surge model is not available for this location yet.
Wildfire
Grand Mound: 60/100 · Rochester: 60/100
No gap.
Grand Mound: Wildfire exposure derived from ingested fire potential tiles.
Rochester: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grand Mound: 9/100 · Rochester: 9/100
No gap.
Grand Mound: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Rochester: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.