852
FXUS65 KSLC 311003
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
303 AM MST SAT JAN 31 2026
KEY MESSAGES
- A STRONG AREA OF HIGH PRESSURE WILL BRING DRY AND STABLE
CONDITIONS THROUGH THE NEXT 7 DAYS AND BEYOND.
- WEAK VALLEY INVERSIONS WILL BECOME BETTER ESTABLISHED ACROSS
NORTHERN UTAH LATER THIS WEEKEND.
- LOCATIONS OUTSIDE OF INVERTED VALLEYS WILL SEE MAX TEMPERATURES
MORE REMINISCENT OF EARLY-MID MARCH THIS WEEKEND THROUGH MUCH
OF NEXT WEEK.
DISCUSSION
FOG IS STRUGGLING TO DEVELOP LIKE IT HAS THE PAST
COUPLE OF NIGHTS. A FEW AREAS HAVE SOME REDUCED VIS, SUCH AS KSLC
(4SM) AND BRIGHAM CITY (5SM), BUT OTHERWISE MOST AREAS REMAINED
FOG FREE. EXPECT ONLY SOME PATCHY FOG POSSIBLE BEFORE SUNSET WHEN
WE SHOULD MIX OUT PRETTY WELL TODAY, ACCORDING TO MODEL SOUNDINGS.
THIS WILL HELP TEMPERATURES CLIMB INTO THE UPPER 40S AND LOW 50S
ACROSS UTAH VALLEYS WITH MID 60S IN LOWER WASHINGTON COUNTY. GIVEN
THE BETTER MIXING DURING THE DAY THE CHANCE OF PATCHY FOG FOR
SUNDAY MORNING WILL DECREASE WITH <30% CHANCE OF FOG DEVELOPMENT.
HIGH PRESSURE WILL BECOME CENTERED OVER THE AREA ON SUNDAY WITH
WARMING AND LIGHT FLOW ALOFT. THIS WILL ENCOURAGE VALLEY
INVERSIONS TO RE-ESTABLISH. HOWEVER, A GRAZING SHORTWAVE ACROSS
NORTHERN UTAH ON MONDAY WILL BRING SOME COOLER AIR ALOFT WITH
INCREASING WEST/NORTHWEST FLOW THAT WILL IMPEDE INVERSION
DEVELOPMENT. UNFORTUNATELY, THIS SHORTWAVE WILL LIKELY BE DRY.
ONLY 1 OF 100 ENSEMBLE MEMBERS HAVE ANY SORT OF PRECIPITATION WITH
IT.
HIGH PRESSURE BUILDS BACK INTO THE GREAT BASIN BY THE MIDDLE OF
OF THE WEEK. GREATER WARMING ALOFT WITH WEAK WINDS WILL ALLOW
INVERSIONS TO STRENGTHEN WITH HAZE LIKELY OVERSPREADING NORTHERN
VALLEYS.
GUIDANCE CONTINUES TO SIGNAL A PATTERN SHIFT AS EARLY AS FEBRUARY
9TH/10TH WITH DRY CONDITIONS PERSISTING UNTIL THEN.
AVIATION...KSLC
MVFR VIS WILL PERSIST THROUGH AT LEAST 16Z BEFORE
IMPROVING TO VFR BY 18Z. THERE IS A 30% CHANCE FOR PERIODS OF VLIFR
CONDITIONS IN DENSE FOG IMPACTING THE AIRFIELD BETWEEN 11-16Z. WINDS
AT THE TERMINAL WILL REMAIN LESS THAN 5 KTS AND VARIABLE IN
DIRECTION THROUGH 18Z, BEFORE BECOMING NORTHWESTERLY BY 19Z.
REST OF UTAH AND SOUTHWEST WYOMING
AREAS OF MVFR VIS
WILL PERSIST THROUGH THE MORNING WITHIN BASINS OF NORTHERN UTAH,
WITH LOCAL AREAS OF DENSE FOG RESULTING IN VLIFR CONDITIONS THROUGH
16Z. THESE VLIFR CONDITIONS WILL BE MOST LIKELY TO OCCUR AT KLGU
(40% CHANCE). ELSEWHERE VFR CONDITIONS WITH DIURNAL WINDS CAN BE
EXPECTED THROUGH THE TAF PERIOD.
SLC WATCHES/WARNINGS/ADVISORIES
UT...NONE.
WY...NONE.
PUBLIC...MAHAN
AVIATION...SEAMAN
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
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