City vs city
Grinnell vs Waterloo, IA
Grinnell currently scores 2 points higher overall than Waterloo, with the largest gap in lightning.
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
Grinnell: 43/100 · Waterloo: 41/100
Grinnell is 2 points higher.
Flood
Grinnell: 50/100 · Waterloo: 66/100
Waterloo is 16 points higher.
Grinnell: FEMA NFHL flood zones: 6 features intersect this tile.
Waterloo: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
Grinnell: 18/100 · Waterloo: 18/100
No gap.
Grinnell: Wind exposure derived from ingested design wind / climatology tiles.
Waterloo: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grinnell: 57/100 · Waterloo: 30/100
Grinnell is 27 points higher.
Grinnell: Lightning exposure derived from ingested climatology tiles.
Waterloo: Lightning exposure derived from ingested climatology tiles.
Tornado
Grinnell: 4/100 · Waterloo: 15/100
Waterloo is 11 points higher.
Grinnell: Tornado risk derived from NOAA SPC historical reports.
Waterloo: Tornado risk derived from NOAA SPC historical reports.
Hail
Grinnell: 100/100 · Waterloo: 100/100
No gap.
Grinnell: Hail risk derived from NOAA SPC historical reports.
Waterloo: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grinnell: Unavailable · Waterloo: Unavailable
A score difference cannot be calculated without both sources.
Grinnell: Storm surge model is not available for this location yet.
Waterloo: Storm surge model is not available for this location yet.
Wildfire
Grinnell: 46/100 · Waterloo: 34/100
Grinnell is 12 points higher.
Grinnell: Wildfire exposure derived from ingested fire potential tiles.
Waterloo: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Grinnell: 28/100 · Waterloo: 21/100
Grinnell is 7 points higher.
Grinnell: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Waterloo: Air quality signal derived from the latest EPA AirNow combined AQI grid.