057  
FXUS65 KSLC 142033  
AFDSLC  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE SALT LAKE CITY UT  
233 PM MDT SAT JUN 14 2025  
   
SYNOPSIS
 
WHILE A WEAK TROUGH WILL BRING SOME RESPITE FROM THE  
HEAT EARLY IN THE UPCOMING WEAK, HIGH PRESSURE AND ASSOCIATED HOT  
AND DRY CONDITIONS OTHERWISE DOMINATE. BY THURSDAY AFTERNOON,  
TEMPERATURES IN THE UPPER 90S TO NEAR 100 WILL BE POSSIBLE IN  
MOST OF UTAH'S LOW ELEVATION VALLEYS.  
 

 
   
SHORT TERM (THROUGH 12Z/6AM MONDAY)
 
MID LEVEL WATER VAPOR LOOP  
SHOWS THE GREAT BASIN POSITIONED BETWEEN A STRONG RIDGE EXTENDING  
FROM MEXICO INTO THE FOUR CORNERS REGION AND A NEAR-STATIONARY  
TROUGH IN THE PACNW. A MODEST AMOUNT OF MOISTURE CAN BE SEEN  
ADVECTING THROUGH OVERHEAD WITHIN THE CORRESPONDING DEEP  
SOUTHWESTERLY FLOW, WHICH IS RESULTING IN A BIT OF MID TO HIGH  
LEVEL CLOUD COVER. WITH SUBSIDENCE ASSOCIATED WITH THE RIDGE AND  
PWATS ONLY GENERALLY AROUND 50-80% OF NORMAL, AREA RADARS REMAIN  
QUIET AND NO DEVELOPMENT OF PRECIPITATION IS ANTICIPATED THROUGH  
THE REMAINDER OF THE DAY. WITH H7 TEMPS ROUGHLY 13C TO 18C,  
AFTERNOON TEMPS ARE RUNNING MILD THOUGH, WITH HIGH MARKS IN THE  
80S EXPECTED ACROSS SOUTHWEST WYOMING, 90S FOR MOST LOWER  
ELEVATION UTAH VALLEYS, AND LOW 100S FOR LOWER WASHINGTON COUNTY  
AND LOWER ZION NP.  
 
FOR SUNDAY, SYNOPTIC FEATURES CHANGE MINIMALLY, AS DOES THE  
FORECAST EVOLUTION. OVERNIGHT TEMPERATURES REMAIN QUITE MILD, AND  
WITH H7 TEMPS NUDGING UPWARDS, SUNDAY AFTERNOON HIGHS SEE A  
CORRESPONDING BUMP UPWARD. CURRENT GUIDANCE SUGGESTS AROUND A 40%  
CHANCE OF HITTING OR EXCEEDING 100F AT KSLC FOR THE FIRST TIME  
THIS YEAR, WHICH IF IT HAPPENS WOULD BE SLIGHTLY AHEAD OF THE  
CLIMATOLOGICAL NORMAL OF JULY 4TH. ALL THAT SAID, IT'LL BE HOT  
MORE OR LESS EVERYWHERE. IF SPENDING TIME OUTDOORS, AND ESPECIALLY  
IF RECREATING, TRY AND WEAR LIGHT COLORED CLOTHING, FIND WAYS TO  
STAY COOL, AND HAVE MORE THAN AMPLE HYDRATION. WITH LITTLE  
AVAILABLE MOISTURE AS WELL AS CONTINUED SUBSIDENCE, PRECIP CHANCES  
REMAIN CLOSE TO ZERO.  
   
LONG TERM (AFTER 12Z/6AM MONDAY), ISSUED 319 AM MDT
 
 
SOUTHWEST WYOMING AND UTAH WILL BE IN ENHANCED SOUTHWEST FLOW  
MONDAY BETWEEN A POWERFUL RIDGE OF HIGH PRESSURE NEAR THE BORDER  
OF SOUTHERN ARIZONA AND NEW MEXICO AND NORTHERN MEXICO AND A  
LONGWAVE TROUGH TRACKING INLAND FROM THE PACIFIC. THERE WILL BE  
SEVERAL DAYS OF ENHANCED SOUTHWEST FLOW PRIOR TO MONDAY, BUT  
MONDAY AFTERNOON WILL LIKELY BE THE PEAK AS THE PRESSURE GRADIENT  
STRENGTHENS WITH THE CLOSER PROXIMITY TO THE TROUGH. RELATIVE  
HUMIDITY WILL CONTINUE TO BE VERY LOW THROUGHOUT, WITH THE WHOLE  
REGION RANGING FROM THE SINGLE DIGITS TO LOW TEENS. THIS WILL  
BRING INCREASED FIRE DANGER. A FIRE WEATHER WATCH IS IN EFFECT FOR  
SEVERAL ZONES THROUGHOUT SOUTHERN UTAH, WHERE WINDS WILL BE  
STRONGEST AND RELATIVE HUMIDITY WILL BE LOWEST.  
 
A DRY COLD FRONT ASSOCIATED WITH THE LONGWAVE TROUGH WILL SLIDE  
IN FROM THE NORTHWEST MONDAY INTO TUESDAY. MEASURABLE  
PRECIPITATION IS UNLIKELY, BUT IT WILL BRING SOME RELIEF TO THE  
MUCH WARMER THAN NORMAL TEMPERATURES. AFTER LOW TO MID 90S FOR  
MOST VALLEYS, WITH 100S FOR LOWER WASHINGTON COUNTY, LAKE POWELL,  
AND THE SAN RAFAEL SWELL MONDAY, TEMPERATURES WILL COOL AROUND  
5-10F FOR SOUTHWEST WYOMING AND NORTHERN UTAH AND AROUND 3-6F  
ELSEWHERE IN UTAH. BREEZY NORTHWEST WINDS WILL COME WITH THE  
FRONT, BUT SPEEDS AND GUSTS WILL BE LIGHTER THAN THE SOUTHWEST  
WINDS THE DAY BEFORE.  
 
THE TRACK OF THE LONGWAVE TROUGH WILL RESULT IN THE RIDGE TO THE  
SOUTHEAST RETROGRADING TO OFF THE COAST OF SOUTHERN CALIFORNIA AND  
BAJA CALIFORNIA. IT WILL QUICKLY ESTABLISH A SIMILAR POSITION TO  
EARLIER IN THE WEEK. IT WILL TRACK EASTWARD THROUGH WEDNESDAY,  
WHERE TEMPERATURES WILL INCREASE THROUGHOUT SOUTHWEST WYOMING AND  
UTAH TO SIMILAR VALUES AS MONDAY. WINDS WILL BE LIGHTER, BUT  
RELATIVE HUMIDITY WILL DROP INTO THE SINGLE DIGITS AND TEENS  
AGAIN.  
 
THE SYNOPTIC SET UP WILL STAY CONSISTENT THURSDAY AND FRIDAY WITH  
HIGH PRESSURE TO THE SOUTHEAST. TEMPERATURES WILL INCREASE TO THE  
MID TO UPPER 90S FOR MOST VALLEYS, INCLUDING THE URBAN CORRIDOR,  
WITH 100S FOR MUCH OF SOUTHERN AND PARTS OF EASTERN UTAH. ENSEMBLE  
GUIDANCE IS IN GOOD AGREEMENT ON ANOTHER LONGWAVE TROUGH TRACKING  
INTO THE EASTERN PACIFIC THURSDAY OR FRIDAY, WHICH WOULD FURTHER  
ENHANCE SOUTHWEST FLOW.  
 

 
   
AVIATION...KSLC
 
LIGHT SOUTHEAST WINDS WILL LAST THROUGH MUCH OF  
THE MORNING. GUSTS WILL INCREASE TO AROUND 20 KNOTS BY 15Z. WINDS  
WILL LIGHTEN AND TRANSITION TO NORTHWEST AROUND 21Z WITH  
SCATTERED CLOUDS BUILDING IN.  
   
REST OF UTAH AND SOUTHWEST WYOMING
 
LIGHT WINDS, GENERALLY FROM  
SOUTHEAST TO SOUTHWEST, WILL PREVAIL THROUGH MUCH OF THE MORNING.  
WINDS FROM THE SAME DIRECTIONS WILL INCREASE BY 15Z. GUSTS WILL  
BE STRONGEST IN SOUTHWEST WYOMING AND SOUTHWEST UTAH, WHERE 20-30  
KNOT GUSTS WILL CONTINUE THROUGH AROUND 03Z. SCATTERED CLOUDS WILL  
BUILD IN AROUND 21Z.  
 

 
   
FIRE WEATHER
 
THE FORECAST AREA WILL REMAIN POSITIONED BETWEEN A  
NEAR STATIONARY TROUGH IN THE PACNW AND STRONG RIDGING EXTENDING  
INTO THE FOUR CORNERS REGION INTO EARLY NEXT WEEK. THIS WILL  
SUPPORT INCREASINGLY HOT AND DRY CONDITIONS THROUGH MONDAY, ALONG  
WITH MODESTLY GUSTY AFTERNOON WINDS. GIVEN POOR OVERNIGHT RECOVERY  
AND WINDS PEAKING MONDAY AHEAD OF A WEAK AND LARGELY DRY  
DISTURBANCE, PATTERN REMAINS FAVORABLE FOR AREAS OF CRITICAL FIRE  
WEATHER CONDITIONS WHERE FUELS ARE SUFFICIENTLY DRY. FOLLOWING THE  
WEAK DISTURBANCE, TEMPERATURES COOL SLIGHTLY AND HUMIDITIES RISE  
SLIGHTLY. FORECAST CONTINUES TO SUGGEST THIS IS SHORT LIVED  
HOWEVER, WITH SUPPORT FOR A QUICK RETURN TO HOT, DRY, AND MODESTLY  
BREEZY CONDITIONS WITH POOR OVERNIGHT HUMIDITY RECOVERY BY  
THURSDAY.  
 

 
   
SLC WATCHES/WARNINGS/ADVISORIES
 
 
UT...FIRE WEATHER WATCH FROM MONDAY AFTERNOON THROUGH MONDAY EVENING  
FOR UTZ489-494>498.  
 
WY...NONE.  

 
 

 
 
SHORT TERM...WARTHEN  
LONG TERM...WILSON  
AVIATION...ADESMET  
FIRE WEATHER...WARTHEN  
 
FOR MORE INFORMATION FROM NOAA'S NATIONAL WEATHER SERVICE VISIT...  
HTTP://WEATHER.GOV/SALTLAKECITY  
 
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