005
FXUS65 KSLC 100433
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1033 PM MDT WED SEP 9 2026
KEY MESSAGES, ISSUED 1015 PM MDT WED SEP 9 2026
- THERE IS A ~50% CHANCE THE WESTERN VALLEYS WILL SEE WIND GUSTS
IN EXCESS OF 45 MPH FOR 3 OR MORE HOURS SATURDAY EVENING INTO
LATE SATURDAY NIGHT AHEAD OF A STRONG COLD FRONT.
DISCUSSION, ISSUED 1015 PM MDT WED SEP 9 2026
WITH HIGH PRESSURE CENTERED OVER THE DESERT
SOUTHWEST, DRY CONDITIONS WILL CONTINUE ACROSS THE REGION THROUGH
THURSDAY. AN UPPER LEVEL TROUGH WILL APPROACH THE PACIFIC
NORTHWEST LATER THURSDAY INTO EARLY FRIDAY. A SHORTWAVE TROUGH
EJECTING AHEAD OF THIS FEATURE COLOCATED WITH A JET MAX WILL
SUPPORT ISOLATED CONVECTION ACROSS NORTHERN UTAH FRIDAY AFTERNOON
INTO FRIDAY EVENING.
MEANWHILE, MODEST MOISTURE ADVECTION WILL SHIFT MID-LEVEL MOISTURE
INTO SOUTHERN AND EASTERN UTAH FRIDAY AFTERNOON INTO SATURDAY
EVENING. A STRONG COLD FRONT ASSOCIATED WITH A STRONG PACIFIC
TROUGH WILL SHIFT INTO NORTHWESTERN UTAH BY EARLY SUNDAY MORNING
AND PROGRESS THROUGH THE STATE THROUGH THE SUNDAY. THIS REPRESENTS
A SLOWER PROGRESSION THAN THE ENSEMBLE MEMBERS FROM 24 HOURS
EARLIER.
THIS MEANS THE THREAT OF WIND GUSTS IN EXCESS OF 45 MPH+ MAY SHIFT
LATER, WITH THE GREATER THAN 50% PROBABILITY OF 45 MPH+ CLOSER TO
6 PM SATURDAY TO 6 AM SUNDAY ACROSS NORTHERN AND WESTERN UTAH.
GIVEN THIS IS STILL A CONSIDERABLE AMOUNT OF TIME AWAY AND THE
CHANCE OF WARNING LEVEL WINDS IS LESS THAN 15%, NO HEADLINES ARE
NEEDED AT THIS TIME.
A SUBSTANTIAL COOLDOWN WILL OCCUR BETWEEN SATURDAY AND SUNDAY,
WITH TEMPERATURES AROUND 10-20 DEGREES COOLER SUNDAY AFTERNOON.
AVIATION
KSLC...VFR CONDITIONS WILL PREVAIL OVER THE KSLC TERMINAL WITH
LITTLE TO NO OPERATIONAL CONCERNS. SOUTH WINDS PREVAIL THROUGH THE
NIGHT BEFORE RETURNING TO A NORTHERLY FLOW AROUND 19Z THURSDAY.
REST OF UTAH AND SOUTHWEST WYOMING...VFR CONDITIONS WILL PREVAIL
ACROSS ALL TERMINALS THROUGH THE VALID TAF PERIOD. DIURNALLY DRIVEN
FLOWS WILL PERSIST THROUGH THE NEXT 24 HOURS.
FIRE WEATHER, ISSUED 315 PM MDT WED SEP 9 2026
HIGH PRESSURE TO OUR SOUTH AND LOW PRESSURE TO OUR NORTH WILL
KEEP WINDS ALOFT OUT OF THE WEST AND KEEP THE DRY WARM AIR IN
PLACE ALONG WITH LIGHT DIURNALLY DRIVEN WINDS. THE EXCEPTION TO
THIS WILL BE ACROSS THE WESTERN UINTA BASIN WHERE WINDS WILL BE
GUSTY UP TO 25 MPH WITH LOW RELATIVE HUMIDITY CREATING LOCALLY
CRITICAL FIRE WEATHER CONDITIONS.
THE PATTERN STARTS TO CHANGE ON FRIDAY AS WINDS START TO
TRANSITION TO THE SOUTHWEST AHEAD OF AN APPROACHING COLD FRONT.
THIS WILL HELP TO BRING A LITTLE BIT OF MID AND UPPER LEVEL
MOISTURE BACK TO THE AREA, BUT PRECIPITATION WILL LIKELY REMAIN
ISOLATED AND ACROSS SOUTHEASTERN PORTIONS OF UTAH. THERE WON'T BE
MUCH LOW LEVEL MOISTURE THAT MOVES INTO THE AREA SO RELATIVE
HUMIDITY WILL REMAIN IN THE TEENS AND 20S FOR MOST LOW ELEVATION
AREAS. THIS PAIRED WITH GUSTY WINDS 30-45 MPH ON SATURDAY WILL
RESULT IN LOCALLY CRITICAL FIRE WEATHER CONDITIONS.
THIS MOSTLY DRY COLD FRONT WILL MOVE THROUGH OVERNIGHT SATURDAY
THROUGH SUNDAY MORNING WITH A TRANSITION TO WEAKER NORTHERLY WINDS
AND INCREASING RELATIVE HUMIDITY ALONG WITH TEMPERATURES DROPPING
10-20 DEGREES.
SLC WATCHES/WARNINGS/ADVISORIES
UT...NONE.
WY...RED FLAG WARNING UNTIL 9 PM MDT THURSDAY FOR WYZ277.
PUBLIC...
AVIATION...KRUSE
FIRE WEATHER...
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page