713
FXUS65 KSLC 092134
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
334 PM MDT MON JUN 9 2025
SYNOPSIS
HIGH PRESSURE WILL RESULT IN MILD TEMPERATURES AND
LIGHT WINDS THROUGH TUESDAY, WITH LINGERING MOISTURE ALLOWING FOR
A FEW AFTERNOON SHOWERS AND STORMS OVER THE HIGHER TERRAIN. A
GRAZING SHORTWAVE WILL BRING THE POTENTIAL FOR STRONG
THUNDERSTORMS OVER NORTHERN UTAH ON WEDNESDAY. HOT AND DRY
SOUTHWESTERLY FLOW WILL DEVELOP FOR THE LATTER HALF OF THE WEEK,
BRINGING THE POTENTIAL FOR CRITICAL FIRE WEATHER CONDITIONS ACROSS
CENTRAL AND SOUTHERN UTAH.
SHORT TERM (THROUGH 12Z WEDNESDAY)
HIGH PRESSURE IS CENTERED
OVER THE GREAT BASIN THIS AFTERNOON, WITH UTAH AND SOUTHWEST
WYOMING UNDER A RELATIVELY LIGHT NORTHERLY FLOW ALOFT WITH SOME
LINGERING MOISTURE. LIKE PREVIOUS DAYS, SEEING SOME GENERALLY
ISOLATED CONVECTIVE DEVELOPMENT OVER THE HIGHER TERRAIN. WITH
LIMITED STEERING FLOW, SEEING LITTLE IN THE WAY OF DRIFT INTO
ADJACENT VALLEYS. THE POTENTIAL FOR STORMS WILL CONTINUE INTO THE
EARLY EVENING BEFORE THE LOSS OF DAYTIME HEATING. TEMPERATURES
REMAIN QUITE MILD, WITH MAXES RUNNING UP 10F ABOVE SEASONAL
NORMALS.
THE RIDGE AXIS WILL CONTINUE EAST TONIGHT INTO TOMORROW, MOVING
OVERHEAD TOMORROW AFTERNOON. BECAUSE OF THIS, STEERING FLOW WILL
BE EVEN LESS THAN TODAY WITH INSTABILITY A BIT LESS THAN TODAY. AS
A RESULT, WILL SEE A REDUCTION IN CONVECTIVE COVERAGE AS WELL AS
POTENTIAL VALLEY DRIFT. TEMPERATURES WILL CONTINUE TO WARM UNDER
THE INFLUENCE OF HIGH PRESSURE, RUNNING 2-4F WARMER THAN VALUES
OBSERVED TODAY.
LONG TERM (AFTER 12Z WEDNESDAY), ISSUED 318 AM MDT
WEDNESDAY
MARKS THE LAST DAY OF SHOWERS AND THUNDERSTORMS ACROSS NORTHERN
UTAH/SOUTHWEST WYOMING, WITH REMNANT MID-LEVEL MOISTURE STILL
HOLDING ON. STORMS WILL LIKELY HAVE A LITTLE MORE POTENCY THAN
PRIOR DAYS GIVEN A STRONG BUT FAST- MOVING SHORTWAVE TROUGH
CLIPPING NORTHWESTERN UTAH WEDNESDAY AFTERNOON. GIVEN DRY LOW
LEVELS, STEEP LAPSE RATES, APPRECIABLE SHEAR, AND MODEST
INSTABILITY, THIS ENHANCES OUR SEVERE WEATHER THREAT; THE STORM
PREDICTION CENTER HAS UPGRADED THE NORTHERN THIRD OF UTAH AND
SOUTHWEST WYOMING TO A SOMEWHAT UNUSUAL DAY 3 MARGINAL (LEVEL 1
OUT OF 5) RISK FOR SEVERE WEATHER, WITH THE MAIN THREAT BEING
GUSTY OUTFLOW WINDS GIVEN THE ENVIRONMENT.
BY THURSDAY, OUR CONCERNS SHIFT MORE TOWARDS FIRE WEATHER, WITH
DRY WESTERLY THEN SOUTHWESTERLY FLOW INCREASING ACROSS THE STATE
FOR THE REST OF THE LONG-TERM PERIOD AS A TROUGH DEVELOPS TO OUR
WEST (SEE FIRE WEATHER SECTION FOR MORE DETAILS). ONE PIECE TO
KEEP AN EYE ON IS A PRETTY DRY SHORTWAVE TROUGH MOVING THROUGH
THIS SOUTHWEST FLOW LATE SUNDAY, WHICH MAY ENHANCE WIND SPEEDS.
REGARDING OTHER SENSIBLE WEATHER, EXPECT MOSTLY CLEAR SKIES, WITH
TEMPERATURES HOVERING AROUND 5-15 DEGREES ABOVE NORMAL THROUGH THE
WEEKEND. BE SURE TO CARRY PLENTY OF WATER IF RECREATING OR
WORKING OUTDOORS THIS WEEKEND!
AVIATION...KSLC
MINIMAL OPERATIONAL CONCERNS ARE FORECAST FOR THE
KSLC TERMINAL THROUGH THE VALID TAF PERIOD. WINDS ARE ANTICIPATED TO
FOLLOW DIURNALLY DRIVEN TRENDS, SHIFTING TO A SOUTHERLY DRAINAGE
FLOW AFTER 03-04Z. CLEAR SKIES PREVAIL THROUGH THE OVERNIGHT PERIOD.
REST OF UTAH AND SOUTHWEST WYOMING
VFR CONDITIONS WILL PREVAIL
ACROSS UTAH AND SOUTHWEST WYOMING THROUGH THE TAF PERIOD. ANY
ONGOING CONVECTION ACROSS THE AREA IS EXPECTED TO DIMINISH AFTER
SUNDOWN. ISOLATED SHOWERS ARE EXPECTED TO DEVELOP OVER HIGH TERRAIN
ACROSS THE REGION BUT ARE NOT EXPECTED TO BRING SIGNIFICANT IMPACTS
TO TERMINALS. OUTSIDE OF ANY OUTFLOW WINDS THROUGH THE REST OF THE
EVENING, WINDS ARE EXPECTED TO BE GENERALLY LIGHT AND TERRAIN DRIVEN
THROUGH THE OVERNIGHT PERIOD.
FIRE WEATHER
HIGH PRESSURE OVER THE AREA WILL RESULT IN MILD
CONDITIONS AND LIGHT WINDS THROUGH TUESDAY. ISOLATED SHOWERS AND
THUNDERSTORMS HAVE DEVELOPED OVER THE HIGHER TERRAIN, PRIMARILY
OVER CENTRAL AND SOUTHERN UTAH, THIS AFTERNOON, AND TOMORROW'S
COVERAGE OF CONVECTION SHOULD BE SIMILAR TO OR SLIGHTLY LESS THAN
TODAY. THE RIDGE WILL SHIFT EAST OF THE AREA BY WEDNESDAY,
ALLOWING A WEAK DISTURBANCE TO GRAZE NORTHERN UTAH, BRINGING THE
POTENTIAL OF STRONG STORMS CAPABLE OF PRODUCING GUSTY WINDS TO
NORTHERN UTAH WEDNESDAY AFTERNOON. A LARGER TROUGH WILL SLOWLY
APPROACH THE PACIFIC COAST MIDWEEK INTO THE WEEKEND, BRINGING A
DRYING TREND TO THE AREA ALONG WITH BREEZY WEST TO SOUTHWEST
WINDS. THIS PATTERN WILL BRING THE POTENTIAL FOR CRITICAL FIRE
WEATHER CONDITIONS TO LOCATIONS WITH CURED, DRY FUELS WEDNESDAY
INTO THE WEEKEND.
SLC WATCHES/WARNINGS/ADVISORIES
UT...NONE.
WY...NONE.
SHORT TERM/FIRE WEATHER...TRAPHAGAN
LONG TERM...CUNNINGHAM
AVIATION...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