573
FXUS65 KSLC 082242
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
342 PM MST THU JAN 8 2026
KEY MESSAGES
- STRONG WASHINGTON COUNTY GAP WINDS WILL DEVELOP THROUGH THE
EVENING, WITH GUSTS IN EXCESS OF 60 MPH IMPACTING AREAS NEAR
CANYON EXISTS INCLUDING TOQUERVILLE, VIRGIN, LA VERKIN AND OTHER
ADJACENT AREAS. THERE IS A 30% CHANCE WIND GUSTS WILL EXCEED 65
MPH IN THESE AREA. WINDS WILL DECREASE AFTER 8-9 AM FRIDAY
MORNING.
- THERE IS A 60% CHANCE LAKE EFFECT SNOW WILL BRING AN ADDITIONAL
1 TO 2 INCHES OF SNOW TO THE TOOELE VALLEY THIS EVENING INTO
EARLY FRIDAY MORNING.
- FREEZING FOG WILL DEVELOP ACROSS THE CACHE VALLEY NEAR TO AFTER
MIDNIGHT TONIGHT AND CONTINUE INTO FRIDAY MORNING.
- BUILDING VALLEY INVERSIONS WILL BRING INCREASINGLY HAZY
CONDITIONS, NOCTURNAL FOG, AND INCREASING AIR QUALITY ISSUES TO
THE NORTHERN VALLEYS THIS WEEKEND INTO NEXT WEEK.
DISCUSSION
AS A MUCH COLDER AIRMASS BUILDS INTO THE REGION, A
COMBINATION OF LAKE EFFECT SNOW, FREEZING FOG, AND STRONG
WASHINGTON COUNTY GAP WINDS WILL IMPACT THE BEEHIVE STATE.
STARTING WITH LAKE EFFECT SNOW, NEARLY ALL CAMS DEVELOP A BAND OF
LAKE EFFECT SNOW ACROSS WESTERN SALT LAKE COUNTY INTO THE TOOELE
VALLEY THROUGH AT LEAST 4 AM. THE INITIAL BAND, VISIBLE ON RADAR,
IS IMPACTING THE SALT LAKE VALLEY, BUT WILL SHIFT WEST WITH TIME
AS FLOW BECOMES MORE NORTHERLY. EXPECT SNOW TOTALS TO LARGELY STAY
UNDER 1 TO 2 INCHES, THOUGH THERE IS A 30 PERCENT CHANCE TOTALS IN
TOOELE AND STOCKTON WILL EXCEED 3 INCHES. A WINTER WEATHER
ADVISORY REMAINS IN EFFECT.
WITH VERY COLD (-16C OR SO) 700MB TEMPERATURES, A STRONG PRESSURE
GRADIENT WILL DEVELOP ACROSS BLACK ROCK CANYON IN WASHINGTON
COUNTY. THE 12Z HREF MEAN INDICATED GUSTS IN EXCESS OF 60 MPH
WOULD BE WIDESPREAD IN AREAS NEAR CANYON EXITS. SOME MEMBERS OF
THE HREF TEND TO RUN A BIT HIGH IN THESE SCENARIOS, BUT LOOKING AT
THE REFS, WINDS STILL REMAIN AT OR ABOVE HIGH WIND WARNING LEVELS
THROUGH THE EVENT. WINDS WILL CONTINUE TO DEVELOP THIS AFTERNOON,
PEAKING BETWEEN 8 PM AND 8 AM. THERE IS A 30% CHANCE WINDS WILL
GUSTS IN EXCESS OF 65 MPH IN THE TOQUERVILLE, LA VERKIN, VIRGIN,
LEEDS AND OTHER TOWNS NEAR THE CANYON EXIT. THOSE WITH OUTDOOR
DECORATIONS, TRASH CANS, ETC SHOULD SECURE THOSE ITEMS TO PREVENT
PROPERTY DAMAGE. THERE ARE ALSO A NUMBER OF RV PARKS IN THIS AREA
AND A REMINDER TO USE CAUTION IN PARKING RVS IN THE PROPER
DIRECTION FOR THESE WINDS. A HIGH WIND WARNING REMAINS IN EFFECT.
WITH WIDESPREAD SNOW COVER IN THE CACHE VALLEY, MUCH COLDER
TEMPERATURES, LIGHT WINDS, AND DECREASING CLOUD COVER, EXPECT
DENSE FOG TO DEVELOP ACROSS THE CACHE VALLEY. THIS FOG WILL BE
LOCALLY DENSE (LESS THAN 0.25 MILES AT TIMES) AND THE FREEZING FOG
WILL HAVE THE POTENTIAL TO COAT ELEVATED SURFACE AND SIDE ROADS. A
FREEZING FOG ADVISORY IS IN EFFECT FOR THE CACHE VALLEY.
AFTER THE FOG, WIND AND SNOW END...HIGH PRESSURE WILL BUILD INTO
THE REGION. EXPECT WORSENING INVERSIONS ACROSS THE NORTHERN
VALLEYS WITH INCREASINGLY HAZY CONDITIONS, WORSENING AIR QUALITY
AND NOCTURNAL FOG. THIS WILL CONTINUE THROUGH AT LEAST MIDWEEK
NEXT WEEK, AND POTENTIALLY LONGER.
AVIATION...KSLC
GUSTY NORTHERLY FLOW CONTINUES THROUGH
TONIGHT, WITH GUSTS IN EXCESS OF 26 KTS POSSIBLE THROUGH AROUND
06Z FRIDAY. LAKE-ENHANCED SNOWFALL RESULTANT FROM THIS NORTHERLY
FLOW MAY IMPACT THE TERMINAL PERIODICALLY WITH MVFR CIGS/VIS
THROUGH AROUND 00Z, BUT MAIN IMPACTS WILL REMAIN WEST OF THE
TERMINAL AS THE BAND PIVOTS WESTWARD THROUGH THE AFTERNOON.
TERRAIN OBSCURATION ESPECIALLY ACROSS THE OQUIRRHS WILL BE THE
MAIN CONCERN FROM THIS LAKE BAND THROUGH THE EVENING. WINDS
DIMINISH OVERNIGHT, WITH CLOUD COVER GRADUALLY DISSIPATING INTO
FRIDAY MORNING.
REST OF UTAH AND SOUTHWEST WYOMING
A FRONTAL PASSAGE WILL
CONTINUE TO BRING MVFR AND PERIODIC IFR CIGS/VIS ACROSS SOUTHWEST
UTAH AS SHOWERS TRACK THROUGH THE AREA. SHOWERS TAPER OFF AFTER
AROUND 00Z. WIDESPREAD GUSTS TO 30KTS ARE EXPECTED TO DEVELOP THIS
AFTERNOON FOR MOST SOUTHWEST UTAH TERMINALS EXCEPT KSGU,
CONTINUING INTO FRIDAY MORNING. ACROSS THE NORTHERN PORTION OF THE
AIRSPACE, LAKE ENHANCED SNOW SHOWERS WILL BE A CONCERN FOR
LOCATIONS DOWNSTREAM OF THE GREAT SALT LAKE THROUGH AROUND 06Z
TONIGHT. FREEZING FOG IS EXPECTED TO DEVELOP ACROSS THE CACHE
VALLEY AROUND 06Z, WHICH WILL IMPACT KLGU WITH VISIBILITIES <1/4SM
THROUGH FRIDAY MORNING.
SLC WATCHES/WARNINGS/ADVISORIES
UT...WINTER WEATHER ADVISORY UNTIL 11 PM MST THIS EVENING FOR UTZ102-
105-108-111>113.
FREEZING FOG ADVISORY FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY
FOR UTZ107.
WINTER WEATHER ADVISORY UNTIL 5 PM MST THIS AFTERNOON FOR UTZ110-
116-117-125.
HIGH WIND WARNING UNTIL 8 AM MST FRIDAY FOR UTZ123.
WINTER WEATHER ADVISORY UNTIL 6 PM MST THIS EVENING FOR UTZ128.
WY...NONE.
KRUSE/WHITLAM
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
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