535
FXUS65 KSLC 090340
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
940 PM MDT TUE SEP 8 2026
KEY MESSAGES
- THERE IS A ~50% CHANCE THE WESTERN VALLEYS WILL SEE WIND GUSTS
IN EXCESS OF 45 MPH FOR 3 OR MORE HOURS SATURDAY AFTERNOON INTO
SATURDAY NIGHT AHEAD OF A STRONG COLD FRONT.
- AN INCREASED THREAT OF SHOWERS AND THUNDERSTORMS WITH LOCALLY
HEAVY RAIN IS EXPECTED FRIDAY INTO SATURDAY.
DISCUSSION
WITH UPPER LEVEL RIDGING ACROSS THE SOUTHEASTERN
AND SOUTH CENTRAL UNITED STATES, AN ACTIVE NORTHERN STREAM WITH A
SERIES OF TROUGHS AND AN UPPER LEVEL LOW OFF THE PACIFIC COAST,
UTAH IS SET IN THE MIDDLE OF THESE THREE FEATURES TUESDAY EVENING.
A DEEP SOUTHWEST FLOW, WITH STRONG MOISTURE ADVECTION WILL REMAIN
WEST OF THE AREA THROUGH AT LEAST THURSDAY. THIS WILL KEEP THE
BEEHIVE STATE WARM AND DRY.
BY FRIDAY, THE UPPER LEVEL LOW SHIFTS WELL OFFSHORE AND A STRONG
UPPER LEVEL TROUGH SHIFTS SOUTHWEST FLOW AND MOISTURE ADVECTION
INTO THE GREAT BASIN. THIS IS CONSISTENT ACROSS THE MAJORITY OF
ENSEMBLE MEMBERS, BRINGING AN INCREASED THREAT OF PRECIPITATION TO
THE REGION FRIDAY AFTERNOON INTO SATURDAY. GIVEN RELATIVELY DRY
ANTECEDENT CONDITIONS, ANY FLOOD THREAT WILL BE DEPENDENT ON HOW
QUICKLY THE LOWER LEVELS ARE ABLE TO REALIZE THIS INCREASED
MOISTURE AND HOW STRONG ANY POTENTIAL CONVECTION IS.
BY SATURDAY EVENING, A STRONG COLD FRONT ASSOCIATED WITH THE
PREVIOUSLY MENTIONED UPPER LEVEL TROUGH WILL SHIFT INTO
NORTHWESTERN UTAH. AHEAD OF THIS FRONT, EXPECT GUSTY SOUTHERLY
WINDS, WITH A ~50% CHANCE WESTERN VALLEYS WILL SEE WIND ADVISORY
CRITERIA SATURDAY AFTERNOON INTO SATURDAY NIGHT.
A COOLER AIRMASS WILL BUILD IN BEHIND THIS COLD FRONT, WITH HIGHS
FALLING AROUND 10-20 DEGREES FROM SATURDAY'S HIGHS SUNDAY.
AVIATION, ISSUED 615 PM MDT TUE SEP 8 2026
KSLC...VFR CONDITIONS WILL PREVAIL OVER THE KSLC TERMINAL THROUGH
THE VALID TAF PERIOD, WITH MINIMAL OPERATIONAL CONCERNS FORECAST.
NORTHERLY WINDS REMAIN IN PLACE THROUGH AROUND 04-05Z BEFORE
SWAPPING BACK TO A LIGHT SOUTHERLY FLOW. PERIODS OF LIGHT AND
VARIABLE FLOW WILL BE POSSIBLE THROUGH THE OVERNIGHT HOURS BEFORE
NORTHERLY WINDS RESUME AROUND 16Z.
REST OF UTAH AND SOUTHWEST WYOMING...VFR CONDITIONS WILL PREVAIL
ACROSS ALL REGIONAL TERMINALS THROUGH THE VALID TAF PERIOD. EXPECT
CURRENT NORTH WINDS ACROSS MUCH OF THE AREA TO RETURN TO DIURNAL
FLOWS OVERNIGHT.
FIRE WEATHER, ISSUED 113 PM MDT TUE SEP 8 2026
DRY AND WARM CONDITIONS WILL PERSIST THROUGHOUT THE WEEK DUE TO
WESTERLY WINDS ALOFT. THIS WILL KEEP MINIMUM RELATIVE HUMIDITY IN
THE TEENS AND UPPER SINGLE DIGITS FOR MUCH OF THE AREA THROUGH
MUCH OF THE WEEK. RH WILL IMPROVE OVERNIGHT INTO THE 30S AND 40S
GIVEN THE COOLER TEMPERATURES. MOISTURE STARTS TO SLOWLY CREEP
BACK INTO THE AREA BY THIS WEEKEND AHEAD OF AN APPROACHING COLD
FRONT. THIS COLD FRONT WILL INCREASE SOUTHWESTERLY WINDS ON
SATURDAY WITH GUSTS 30-45 MPH EXPECTED, PARTICULARLY ACROSS
WESTERN PORTIONS OF UTAH. THIS WILL RESULT IN LOCALLY CRITICAL
FIRE WEATHER CONDITIONS AS MIN RH WILL REMAIN IN THE TEENS ACROSS
LOCATIONS NEAR THE NEVADA BORDER. THIS COLD FRONT WILL MOVE
THROUGH LATE SATURDAY/EARLY SUNDAY WITH WINDS WEAKENING BEHIND THE
FRONT. MOISTURE ASSOCIATED WITH THIS FRONT REMAINS A BIT MORE
UNCERTAIN WITH A LOW CHANCE OF PRECIPITATION MOST LIKELY ACROSS
EASTERN UTAH FRIDAY/SATURDAY.
SLC WATCHES/WARNINGS/ADVISORIES
UT...NONE.
WY...FIRE WEATHER WATCH FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY
EVENING FOR WYZ277.
KRUSE/MAHAN/WEBBER
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page