Utah, 2016

Dense Fog in Utah, January 27, 2016

January 27, 2016 · NWS GJT · 1 event in 1 county or zone

An inversion set up over the Uintah Basin and caused dense fog to form.

Where it happened

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.

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  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

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.

An inversion set up over the Uintah Basin and caused dense fog to form.

What forecasters said that day

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 Jan 26, 9:30 PM MST, 5 hours 30 minutes earlier.

Area forecast discussion, Jan 26, 9:30 PM MST, 5 hours 30 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
930 PM MST TUE JAN 26 2016

.SHORT TERM...(TONIGHT THROUGH WEDNESDAY NIGHT)
ISSUED AT 401 PM MST TUE JAN 26 2016

HIGH PRESSURE CONTINUES TO AMPLIFY OVER THE WESTERN US AND WILL
FILTER IN WARMER AIR ALOFT OVER THE NEXT 24 HOURS. THIS WILL JUST
STABILIZE THE ATMOSPHERE FURTHER AND CREATE STEEP INVERSIONS IN
PROTECTED VALLEYS. EXPECTING FOG TO REDEVELOP IN THE EASTERN
UINTAH BASIN TONIGHT...AS WELL AS NEAR THE CRAIG AREA AND GUNNISON
BASIN. IR SATELLITE INDICATES THE STRATUS IN THE EASTERN UINTAH
BASIN HAS BARELY DISINTEGRATED DURING THE DAY TODAY...AND THERE IS
NO REASON THAT THE STRATUS WILL NOT LOWER AGAIN TONIGHT.

MORNING LOW CLOUDS AND STRATUS WILL PERSIST ACROSS THE EASTERN
UINTAH BASIN THROUGH MIDDAY WITH PATCHY FOG ACROSS NORTHWEST
COLORADO AND NEAR EAGLE. OTHERWISE DRY CONDITIONS WILL PREVAIL
THROUGH WEDNESDAY NIGHT. SHOULD SEE ANOTHER ROUND OF LOW
CLOUDS AND FOG ACROSS THE EASTERN UINTA BASIN WITH INVERSIONS
REMAINING STRONG IN THIS AREA. TEMPS WILL CONTINUE TO SLOWLY
MODIFY...BUT STILL ON THE COOL SIDE OF SEASONAL NORMS.

.LONG TERM...(THURSDAY THROUGH TUESDAY)
ISSUED AT 401 PM MST TUE JAN 26 2016

LITTLE CHANGE THURSDAY AND FRIDAY WITH DRY WEATHER AND A GRADUAL
BUMP IN TEMPS EXPECTED AS HIGH PRESSURE HOLDS IN PLACE OVER THE
WESTERN U.S. OVERNIGHT MINS WILL REMAIN COLD...ESPECIALLY IN THE
SNOW COVERED VALLEYS WHERE INVERSIONS WILL BE THE STRONGEST. HAVE
CONTINUED TO UNDERCUT MOS GUIDANCE IN OUR FAVORED COLDER AREAS.
THE PATTERN STARTS TO BREAKDOWN AS THE WEEKEND APPROACHES AS A
SERIES OF STRONG PACIFIC WAVES APPROACHES THE WESTERN U.S. STILL
WAITING FOR BETTER MODEL CONSENSUS BEFORE RAISING CONFIDENCE
LEVELS BUT SIGNAL IS THAT PRECIPITATION...POTENTIALLY HEAVY...
WILL BE MOVING BACK INTO OUR FORECAST AREA THIS WEEKEND AND INTO
EARLY NEXT WEEK. THE QUESTION IS TO WHAT EXTENT AND EXACTLY WHEN.
MODELS INITIALLY DRIVE THE FIRST IN A LONG SERIES OF SYSTEMS
ACROSS THE GREAT BASIN LATE FRIDAY NIGHT AND SATURDAY. SUBTLE
SHIFTS IN STRENGTHENING WESTERN FLOW WILL SHIFT FOCUS OF THE
HEAVIEST MOUNTAIN SNOWS AND VALLEY SHOWERS FROM NORTH TO SOUTH AS
THE WAVES MOVE ACROSS. THE ECMWF IS HINTING AT A LITTLE STRONGER
ENERGY DIGGING THE WESTERLY FLOW A BIT RESULTING IN A MORE
SOUTHERLY TRACK AND FEWER BREAKS IN THE MOISTURE FLOW. THE EC
SCENARIO WOULD RESULT IN MORE ROBUST SNOWFALL AMOUNTS...ESPECIALLY
OVER OUR SOUTHERN MOUNTAINS AND VALLEYS...ALTHOUGH IT IS A BIT
WARMER AND WE COULD HAVE SOME PROBLEMS WITH SNOW LEVELS. THE GFS
SOLUTION...WHILE STILL WET...HAS THAT DRIER AIR FLOWING IN ON
SATURDAY...WHICH BRINGS A BREAK IN PRECIPITATION. THINGS GET
REALLY INTERESTING BY THE BEGINNING OF THE NEW WEEK AS ENERGY
DIVES INTO THE GREAT BASIN...EVENTUALLY CLOSING OFF A LOW THAT
TRACK JUST SOUTH OF THE FOUR CORNERS MONDAY AND TUESDAY. ABUNDANT
MOISTURE AVAILABLE WITH STRONG DYNAMIC FORCING EXPECTED. TRACKING
AND TIMING ISSUES PERSIST...SO CONFIDENCE IS STILL BELOW FIFTY
PERCENT. STAY TUNED AS WE LOCK ON TO THE FINER DETAILS OF THIS
COMPLEX WINTER STORM.

&&

.AVIATION...(FOR THE 06Z TAFS THROUGH 06Z WEDNESDAY NIGHT)
ISSUED AT 930 PM MST TUE JAN 26 2016

STILL WAITING FOR THE DENSE FOG TO DEVELOP AT THE UINTA BASIN AS
IT APPEARS DOWNSLOPE WINDS MAY BE HOLDING THIS BACK ATTM. STILL
GOING TO BE PESSIMISTIC AND GO FOR LIFR CONDITIONS AT KVEL IN THE
FIRST SIX HOURS OF THE NEW FORECAST WHICH WILL PERSIST INTO LATE
MORNING. OTHERWISE VFR CONDITIONS SHOULD PREVAIL AT AREA FORECAST
TERMINALS.

&&

.GJT WATCHES/WARNINGS/ADVISORIES...
CO...NONE.
UT...DENSE FOG ADVISORY UNTIL 11 AM MST WEDNESDAY FOR UTZ024.

&&

SHORT TERM...JAM/JDC
LONG TERM...JDC
AVIATION...TGJT
Hazardous weather outlook, Jan 26, 11:21 AM MST, 15 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1121 AM MST TUE JAN 26 2016

COZ001>014-017>023-UTZ022>025-027>029-271830-
LOWER YAMPA RIVER BASIN-CENTRAL YAMPA RIVER BASIN-
ROAN AND TAVAPUTS PLATEAUS-ELKHEAD AND PARK MOUNTAINS-
UPPER YAMPA RIVER BASIN-GRAND VALLEY-DEBEQUE TO SILT CORRIDOR-
CENTRAL COLORADO RIVER BASIN-GRAND AND BATTLEMENT MESAS-
GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS-
CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN-
WEST ELK AND SAWATCH MOUNTAINS-FLAT TOPS-
UPPER GUNNISON RIVER VALLEY-UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-
NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS-
PARADOX VALLEY/LOWER DOLORES RIVER-
FOUR CORNERS/UPPER DOLORES RIVER-ANIMAS RIVER BASIN-
SAN JUAN RIVER BASIN-SOUTHEAST UTAH-EASTERN UINTA MOUNTAINS-
EASTERN UINTA BASIN-TAVAPUTS PLATEAU-ARCHES/GRAND FLAT-
LA SAL AND ABAJO MOUNTAINS-CANYONLANDS/NATURAL BRIDGES-
1121 AM MST TUE JAN 26 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN
COLORADO.

.DAY ONE...THIS AFTERNOON AND TONIGHT

PATCHY DENSE FOG WILL DECREASE VISIBILITY TO LESS THAN ONE HALF
MILE AT TIMES ACROSS THE EASTERN UINTA BASIN AND NEAR CRAIG AGAIN
TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A CHANCE OF SNOW SATURDAY AND SUNDAY...MAINLY OVER THE
NORTHERN HALF OF THE AREA...SPREADING ACROSS ALL OF EASTERN UTAH
AND WESTERN COLORADO SUNDAY NIGHT AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

The radar

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

Open the radar archive at this moment

Event by event

1 dense fog. Local standard time, as filed.

Dense Fog, Eastern Uinta Basin

When
January 27, 3:00 AM MST to 8:00 AM MST
Where
Eastern Uinta Basin forecast zone
Reported by
ASOS
Coordinates
40.125, -109.518 (the zone’s center; the record gives no point)

The Vernal ASOS reported visibilities less than 1/4 mile for the morning hours.

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 Utah in 2016Every state in 2016This day in weather historyWarnings in Utah, January 2016

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 2026-09-24. Each event’s entry at NCEI: 659984.