Dense fog was blamed in part for at least 40 accidents in the Fort Collins and Loveland areas during the morning commute. Visibilities were reduced to less than 1/4 of a mile at times.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BOU wrote it up.
Dense fog was blamed in part for at least 40 accidents in the Fort Collins and Loveland areas during the morning commute. Visibilities were reduced to less than 1/4 of a mile at times.
The national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 1997Every state in 1997This day in weather historyWarnings in Colorado, December 1997
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 5620404.