Low level moisture trapped under an inversion resulted in areas of dense fog.
Every event with a place to put it; 2 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 GJT wrote it up.
Low level moisture trapped under an inversion resulted in areas of dense fog.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Junction, CO wrote its last area forecast discussion before the first event at Dec 31, 7:41 AM MST, 19 minutes earlier.
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</html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</html>The national radar mosaic for the moment the first event began.
2 dense fog. Local standard time, as filed.
Dense fog occurred in some areas of Grand Junction. The visibility dropped to less than a quarter mile at the Grand Junction Regional Airport.
Dense fog occurred in the Craig area. The visibility dropped to a quarter mile at times at the Craig-Moffat County Airport.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2015Every state in 2015This day in weather historyWarnings in Colorado, December 2015
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: 611148, 611149.