Colorado, 2015

Dense Fog in Colorado, January 9 to 10, 2015

January 9 to 10, 2015 · NWS GJT · 3 events in 3 counties and zones

Melting snow moistened the air near the surface. As temperatures dropped overnight, dense fog developed across portions of western Colorado.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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  • Marine and coastal
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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

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.

What happened

The episode as NWS GJT wrote it up.

Melting snow moistened the air near the surface. As temperatures dropped overnight, dense fog developed across portions of western Colorado.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

3 dense fog. Local standard time, as filed.

Dense Fog, Central Yampa River Basin

When
January 9, 8:30 PM MST to January 10, 11:00 AM MST
Where
Central Yampa River Basin forecast zone
Reported by
ASOS
Coordinates
40.361, -107.805 (the zone’s center; the record gives no point)

Dense fog occurred in areas of northwest Colorado's lower elevations. Visibilities at the Craig-Moffat Airport and the Meeker Coulter Field Airport were down to a quarter mile at times.

Dense Fog, Upper Yampa River Basin

When
January 9, 11:00 PM MST to January 10, 9:00 AM MST
Where
Upper Yampa River Basin forecast zone
Reported by
AWOS
Coordinates
40.485, -106.991 (the zone’s center; the record gives no point)

Dense fog occurred in the Steamboat Springs area. Visibilities at the Steamboat Springs Airport were down to a quarter mile at times.

Dense Fog, Upper Gunnison River Valley

When
January 10, 3:00 AM MST to 11:00 AM MST
Where
Upper Gunnison River Valley forecast zone
Reported by
AWOS
Coordinates
38.535, -107.650 (the zone’s center; the record gives no point)

Dense fog occurred in the Gunnison area. Visibilities at the Gunnison-Crested Butte Airport were down to a quarter mile at times.

What these are

Dense Fog
Fog reducing visibility to a quarter mile or less, filed where it caused accidents or disruption.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Colorado in 2015Every state in 2015This day in weather historyWarnings in Colorado, January 2015

Sources

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: 603333, 603334, 603335.