324
FXUS65 KSLC 091048
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
348 AM MST SUN NOV 9 2025
SYNOPSIS
HIGH PRESSURE WILL BRING MOSTLY CLEAR, DRY, AND WARMER
THAN NORMAL CONDITIONS MUCH OF THE WEEK. DETAILS WITH A STORM
AROUND THURSDAY, FRIDAY, AND INTO THE WEEKEND ARE OF LOWER
CONFIDENCE, BUT MODELS ARE IN AGREEMENT THAT A STORM SYSTEM WILL
TRACK INTO THE WESTERN U.S. WEDNESDAY INTO THURSDAY.
SHORT TERM (THROUGH 12Z/5AM TUESDAY)
KEY POINTS:
- DRY, WARMER THAN NORMAL CONDITIONS WILL LAST THROUGH WEDNESDAY.
- CONFIDENCE IS INCREASING (80% LIKELIHOOD) THAT A POTENT UPPER
TROUGH WILL BRING COOLER TEMPERATURES AND POTENTIALLY WIDESPREAD
PRECIPITATION ACROSS THE FORECAST AREA INTO THE WEEKEND.
HIGH PRESSURE NEAR THE CALIFORNIA COAST WILL BRING STABLE NORTHWEST
FLOW TO SOUTHWEST WYOMING AND UTAH THROUGH SUNDAY. THERE IS UPPER
MOISTURE IN THE NORTHWEST FLOW, SO THERE WILL BE HIGH CLOUDS,
PARTICULARLY FURTHER NORTH. VALLEY HIGH TEMPERATURES WILL
GENERALLY BE IN THE MID AND UPPER 50S.
VALLEY LOW TEMPERATURES WILL BE IN THE 30S FOR MUCH OF UTAH INTO
MONDAY. THE RIDGE WILL TRACK INLAND, WHICH WILL ADD 1-5F TO HIGH
TEMPERATURES. DRY, WARMER THAN NORMAL CONDITIONS WILL CONTINUE
TUESDAY.
LONG TERM (AFTER 12Z/5AM TUESDAY)
A LONGWAVE RIDGE WILL REMAIN
ACROSS THE REGION THROUGH WEDNESDAY MAINTAINING A DRY AND STABLE
AIRMASS WITH ABOVE NORMAL TEMPERATURES. A MID NOVEMBER SUN ANGLE
WITH WEAK FLOW WILL LIMIT BOUNDARY LAYER MIXING, HOWEVER DAYTIME
TEMPERATURES WILL RUN AROUND 10F ABOVE CLIMO ACROSS THE FORECAST
AREA TUESDAY AND WEDNESDAY.
00Z ENSEMBLE GUIDANCE IS COALESCING AROUND A COMMON SOLUTION OF AN
UPPER TROUGH SPREADING INTO THE INTERMOUNTAIN REGION DURING THE
LATTER PORTION OF THE WEEK, BRINGING WIDESPREAD PRECIPITATION AND
MUCH COOLER TEMPERATURES ACROSS THE FORECAST AREA LATER THURSDAY
NIGHT THROUGH AT LEAST FRIDAY. ROUGHLY 90% OF EPS, GEFS AND GEM
MEMBERS SUPPORT THIS LONGWAVE TROUGH IMPACTING THE REGION DURING
THIS TIMEFRAME. DETAILS REGARDING THE EVOLUTION OF THIS TROUGH STILL
NEED TO BE IRONED OUT WHICH WILL IMPACT WHERE THE HEAVIEST
PRECIPITATION OCCURS, BUT THE MEAN 24 HOUR QPF THROUGH FRIDAY
AFTERNOON SUPPORTS NEARLY .25" OF WATER ACROSS MOST VALLEYS
STATEWIDE, AND A CONSERVATIVE .50" OR MORE WITH ACCUMULATING
SNOWFALL ACROSS THE HIGHER TERRAIN. PRECEDING THE TROUGH, ENHANCED
SOUTHWESTERLY FLOW LOOKS TO BRING WINDY TO LOCALLY VERY WINDY
CONDITIONS THURSDAY ACROSS THE WESTERN VALLEYS.
AVIATION...KSLC
LIGHT SOUTHEAST WINDS WILL TRANSITION TO
NORTHWEST AROUND 18Z WITH FEW TO SCATTERED HIGH CLOUDS THROUGH THE
TAF PERIOD.
REST OF UTAH AND SOUTHWEST WYOMING
WINDS WILL BE LIGHT AND
SOMETIMES VARIABLE THROUGHOUT SOUTHWEST WYOMING AND UTAH WITH FEW
TO SCATTERED HIGH CLOUDS THROUGH THE TAF PERIOD.
SLC WATCHES/WARNINGS/ADVISORIES
UT...NONE.
WY...NONE.
SHORT TERM...WILSON
LONG TERM...SEAMAN
AVIATION...WILSON
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
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