262
FXUS65 KSLC 110926
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
226 AM MST TUE NOV 11 2025
SYNOPSIS
HIGH PRESSURE WILL REMAIN IN PLACE THROUGH
MIDWEEK, RESULTING IN DRY AND MILD CONDITIONS. WINDS WILL INCREASE
THURSDAY AHEAD OF A STORM SYSTEM THAT WILL IMPACT THE AREA FRIDAY
INTO THE UPCOMING WEEKEND.
DISCUSSION
HIGH PRESSURE REMAINS CENTERED OVER THE GREAT BASIN
THIS MORNING, PUTTING UTAH AND SOUTHWEST WYOMING UNDER A DRY AND
GENERALLY STABLE NORTHWEST FLOW ALOFT. SEEING SCATTERED HIGH
CLOUDS OVER THE NORTHERN HALF OF THE FORECAST AREA IN ASSOCIATION
WITH A RATHER WEAK WAVE MOVING OVER THE TOP OF THE RIDGE. THIS
FEATURE WILL ACT TO FLATTEN THE RIDGE JUST A BIT, ALLOWING FOR
SLIGHT COOLING OF THE AIRMASS OVER THE AREA. AS A RESULT,
TEMPERATURES TODAY WILL BE SIMILAR TO YESTERDAY, WITH MAXES
RUNNING 5-10F ABOVE SEASONAL NORMALS. NORTHERN UTAH VALLEYS WILL
BE ON THE LOWER END OF THAT RANGE WITH INVERSIONS LIMITING WARMING
AND ALLOWING POLLUTANTS TO ACCUMULATE.
BY WEDNESDAY AFTERNOON, THE RIDGE AXIS IS EXPECTED TO MOVE EAST OF
THE AREA AS A BROAD STORM SYSTEM APPROACHES THE PACIFIC COAST.
INCREASING SOUTHWEST FLOW WILL BRING SOME IMPROVEMENT TO MIXING,
WITH A LOW CHANCE THIS WILL MIX OUT VALLEY INVERSIONS, BRINGING
SOME WARMER TEMPERATURES. MIXING OUT WILL BE MUCH MORE LIKELY ON
THURSDAY WITH THE FLOW INCREASING FURTHER AS THE SYSTEM MAKES ITS
WAY ONSHORE. THUS, THIS SHOULD BE THE MOST MILD DAY OF THE WEEK
WITH MAXES MOST LIKELY RUNNING 10-15F ABOVE SEASONAL NORMALS.
THOUGH WINDS WILL BE BREEZY, STRONG WINDS ARE LOOKING LESS LIKELY,
WITH A 20-30 PERCENT CHANCE OF WIND GUSTS OF 45 MPH OR MORE FOR
WESTERN UTAH THURSDAY AFTERNOON.
FOR FRIDAY THROUGH THE WEEKEND, CONFIDENCE IS STILL HIGH THAT A
STORM SYSTEM WILL IMPACT THE AREA. HOWEVER, GUIDANCE YESTERDAY WAS
MORE EVENLY SPLIT BETWEEN TWO SCENARIOS: A PROGRESSIVE OPEN WAVE
MOVING ACROSS THE AREA THAT WOULD BRING COLDER CONDITIONS AND A
HIGHER POTENTIAL FOR PRECIPITATION, AND A SPLITTING SYSTEM WITH
ONE PIECE STAYING PRIMARILY NORTH OF THE AREA AND THE OTHER MOVING
ACROSS THE DESERT SOUTHWEST BRINGING LESS COLD TEMPERATURES AND A
LOWER POTENTIAL FOR PRECIPITATION. GUIDANCE HAS BEEN INCREASINGLY
TRENDING TOWARD THE LATTER SOLUTION SO POPS AND SNOW AMOUNTS HAVE
GONE DOWN FOR FRIDAY INTO SATURDAY. HOWEVER, THE SPLITTING
SOLUTION HAS BEEN ACCOMPANIED BY A SLOWER MOVING LOW OVER THE
DESERT SOUTHWEST, SO THIS WOULD KEEP THE POTENTIAL FOR
PRECIPITATION OVER SOUTHERN UTAH THROUGH THE WEEKEND. THUS, POPS
FOR SOUTHERN UTAH HAVE INCREASED OVERALL FOR SATURDAY INTO SUNDAY.
DRIER CONDITIONS ARE THEN EXPECTED TO RETURN THROUGH DAY SEVEN.
AVIATION...KSLC
VFR CONDITIONS PREVAIL AT THE TERMINAL THROUGH
THE TAF PERIOD UNDER DRY CONDITIONS AND GRADUALLY DECREASING HIGH
CLOUD COVER THIS AFTERNOON. LIGHT SOUTHEASTERLY WINDS CONTINUE THIS
MORNING BEFORE TRANSITIONING TO THE NORTHWEST AROUND 19Z.
REST OF UTAH AND SOUTHWEST WYOMING
VFR CONDITIONS PERSIST FOR ALL
REGIONAL TERMINALS THROUGH THE TAF PERIOD. LIGHT, GENERALLY TERRAIN
DRIVEN WINDS FOR ALL TERMINALS TODAY. A PERSISTENT DECK OF HIGH
CLOUDS IS EXPECTED TO REMAIN ACROSS THE AIRSPACE THIS MORNING, WITH
SLIGHT CLEARING THIS AFTERNOON AND EVENING.
SLC WATCHES/WARNINGS/ADVISORIES
UT...NONE.
WY...NONE.
PUBLIC...TRAPHAGAN
AVIATION...WHITLAM
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
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