City vs city
Collinsville vs Northwest Harwinton, CT
Collinsville currently scores 8 points higher overall than Northwest Harwinton, with the largest gap in wildfire.
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
Collinsville: 27/100 · Northwest Harwinton: 19/100
Collinsville is 8 points higher.
Flood
Collinsville: 33/100 · Northwest Harwinton: 3/100
Collinsville is 30 points higher.
Collinsville: FEMA NFHL flood zones: 5 features intersect this tile.
Northwest Harwinton: FEMA NFHL flood zones: 1 features intersect this tile.
Wind
Collinsville: 23/100 · Northwest Harwinton: 23/100
No gap.
Collinsville: Wind exposure derived from ingested design wind / climatology tiles.
Northwest Harwinton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Collinsville: 12/100 · Northwest Harwinton: 13/100
Northwest Harwinton is 1 points higher.
Collinsville: Lightning exposure derived from ingested climatology tiles.
Northwest Harwinton: Lightning exposure derived from ingested climatology tiles.
Tornado
Collinsville: 8/100 · Northwest Harwinton: 19/100
Northwest Harwinton is 11 points higher.
Collinsville: Tornado risk derived from NOAA SPC historical reports.
Northwest Harwinton: Tornado risk derived from NOAA SPC historical reports.
Hail
Collinsville: 20/100 · Northwest Harwinton: 28/100
Northwest Harwinton is 8 points higher.
Collinsville: Hail risk derived from NOAA SPC historical reports.
Northwest Harwinton: Hail risk derived from NOAA SPC historical reports.
Storm surge
Collinsville: Unavailable · Northwest Harwinton: Unavailable
A score difference cannot be calculated without both sources.
Collinsville: Storm surge model is not available for this location yet.
Northwest Harwinton: Storm surge model is not available for this location yet.
Wildfire
Collinsville: 62/100 · Northwest Harwinton: 18/100
Collinsville is 44 points higher.
Collinsville: Wildfire exposure derived from ingested fire potential tiles.
Northwest Harwinton: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Collinsville: 28/100 · Northwest Harwinton: 28/100
No gap.
Collinsville: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Northwest Harwinton: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.