825
FXUS65 KSLC 181036
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
336 AM MST TUE NOV 18 2025
SYNOPSIS
LIGHT, SCATTERED SHOWERS CONTINUE ACROSS SOUTHERN UT
THIS MORNING WITH COVERAGE INCREASING INTO AND THROUGHOUT THE
AFTERNOON TODAY. LIGHT, SCATTERED SHOWERS ARE EXPECTED ACROSS
NORTHERN UT THIS AFTERNOON AS A CLOSED LOW MEANDERS TO OUR SOUTH.
DISCUSSION
KEY POINTS:
- VALLEY RAINFALL AND MOUNTAIN SNOWFALL WILL CONTINUE RAMPING UP
THROUGH THIS MORNING AND CONTINUE THROUGH WEDNESDAY WITH
LIGHT, SHOWERY PRECIPITATION PERSISTING THROUGH FRIDAY.
- LIGHT VALLEY RAIN AND MOUNTAIN SNOW WILL DEVELOP ACROSS NORTHERN
UT THIS AFTERNOON AND PERSIST THROUGH FRIDAY.
- ANOTHER SYSTEM DIVES SOUTH ALONG THE PACIFIC COAST BY FRIDAY AND
WILL REMAIN FURTHER SOUTH THAN OUR RECENT SYSTEMS. THIS HAS TRENDED
TOWARD A DRIER FORECAST INTO THE WEEKEND.
A CLOSED MID-UPPER LOW CURRENTLY LOCATED OFF THE CENTRAL CA
COASTLINE WILL CONTINUE DIVING SOUTH BEFORE EVENTUALLY PUSHING
INLAND ACROSS SOUTHERN CA INTO AZ. AN UPPER RIDGE CURRENTLY IN PLACE
ACROSS THE FOUR CORNERS WILL GRADUALLY RETREAT TO THE SOUTHEAST
MAKING WAY FOR THE UPPER LOW TO CONTINUE PROGRESSING EAST WITH TIME,
REMAINING WELL TO OUR SOUTH. AS SUCH, MULTIPLE WAVES OF
PRECIPITATION IN THE FORM OF VALLEY RAINFALL AND MOUNTAIN SNOWFALL
WILL OCCUR THROUGH TODAY ACROSS SOUTHERN UT, INCREASING IN COVERAGE
THROUGHOUT THE MORNING INTO THE AFTERNOON.
MOISTURE RETURN ACROSS SOUTHERN UT PERSISTS THROUGHOUT THE ENTIRETY
OF TODAY WITH PRECIPITATION COVERAGE CONTINUALLY INCREASING AS A
RESULT, ESPECIALLY AS MORE FAVORABLE ASCENT DRAWS CLOSER WITH THE
LOW PROGRESSING EAST. SIMILAR TO THE LAST EVENT FOR SOUTHERN UT,
700MB TEMPERATURES RANGING FROM -2C TO -3C WILL GENERALLY YIELD
HIGHER SNOW LEVELS WHICH ARE EXPECTED TO HOVER AROUND 8000FT TODAY.
LATER THIS EVENING INTO WEDNESDAY MORNING, COLDER AIR ALOFT PUSHES
IN BRINGING 700MB TEMPERATURES DOWN TO AS LOW AS -4C TO -5C,
DROPPING SNOW LEVELS TO AROUND 7500FT, PERHAPS AS LOW AS 7000FT LATE
WEDNESDAY EVENING. BY THIS TIME, PRECIPITATION WILL TRANSITION TO
SCATTERED AND SHOWERY ACROSS SOUTHERN UT. CURRENTLY, QPF TOTALS
RANGE FROM AROUND 0.25-1" WITH I-15 FROM CEDAR CITY TO ST. GEORGE
APPEARING AS A FAVORED CORRIDOR REGARDING RAINFALL. HIGHER AMOUNTS
RANGING FROM 1-2.25" ARE EXPECTED ACROSS THE SOUTHERN UT MOUNTAINS
WITH THE HIGHER END FAVORED ACROSS THE PINE VALLEY MOUNTAINS, BRIAN
HEAD, AND BOULDER MOUNTAIN. ADDITIONALLY, THESE THREE LOCATIONS ARE
WHERE THE HIGHEST SNOWFALL ACCUMULATIONS ARE EXPECTED WITH A ROUGHLY
50-60% CHANCE OF EXCEEDING 12".
FOLLOWING THE DEPARTURE OF THIS CURRENT SYSTEM, ANOTHER LOOKS TO
DIVE SOUTH ALONG THE CA COAST INTO THE DESERT SOUTHWEST. HOWEVER,
THIS SYSTEM WILL REMAIN FURTHER SOUTH PROVIDING OUR FORECAST AREA
WITH LITTLE FORCING AND MOISTURE, THUS RESULTING IN LESS RAINFALL
AND ACCUMULATING HIGH-ELEVATION SNOW BY FRIDAY. INTO THE WEEKEND,
DRY CONDITIONS ARE EXPECTED TO DEVELOP AS AN UPPER RIDGE DEVELOPS
ACROSS MUCH OF THE WEST. LOOKING FURTHER INTO NEXT WEEK,
CONSIDERABLE UNCERTAINTY REMAINS REGARDING THE UPPER AIR PATTERN,
THOUGH THIS FORECASTER IS STILL HOLDING ONTO A SLIVER OF HOPE THAT
NORTHERN UT CAN GET IN ON SOME GOOD SNOW SOONER RATHER THAN LATER.
AVIATION...KSLC
THE SLC TERMINAL WILL SEE VFR CONDITIONS TODAY
WITH CEILINGS REMAINING ABOVE 6000 FEET AGL. SOUTHERLY WINDS ARE
EXPECTED TO SHIFT TO THE NORTHWEST BETWEEN 17Z AND 19Z.
REST OF UTAH AND SOUTHWEST WYOMING
WITH ANOTHER STORM SYSTEM
BRINGING PRECIPITATION TO SOUTHERN UTAH TODAY, AREAS ABOVE 8,000
FEET IN THAT AREA ARE LIKELY TO SEE PERIODS OF MVFR/IFR CONDITIONS
IN SNOW BEGINNING LATE MORNING. THIS WILL BE MOST WIDESPREAD DURING
THE AFTERNOON HOURS, BECOMING CONFINED TO SOUTHWEST UTAH THEREAFTER.
ELSEWHERE, VFR CONDITIONS WILL PREVAIL ACROSS THE AIRSPACE WITH
GENERALLY LIGHT AND TERRAIN DRIVEN WINDS.
SLC WATCHES/WARNINGS/ADVISORIES
UT...WINTER WEATHER ADVISORY UNTIL 5 AM MST WEDNESDAY FOR UTZ125.
WY...NONE.
PUBLIC...WORSTER
AVIATION...TRAPHAGAN
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
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