Dense fog formed in the Four Corners region as low level moisture remained trapped under a surface-based inversion.
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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.
Dense fog formed in the Four Corners region as low level moisture remained trapped under a surface-based inversion.
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, 4:46 PM MST, 1 hour 44 minutes earlier.
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</html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</html>The national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
Dense fog occurred across portions of the area with visibilities down to a quarter mile.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2016Every state in 2016This day in weather historyWarnings in Colorado, December 2016
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 2026-09-30. Each event’s entry at NCEI: 702143.