Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 250408
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1008 PM MDT FRI OCT 24 2014

.SYNOPSIS...A COLD FRONT APPROACHING UTAH WILL GENERATE STRONG
SOUTHERLY WINDS ON SATURDAY. THE FRONT WILL CROSS THE STATE SUNDAY
THROUGH SUNDAY NIGHT USHERING IN A COLDER AIRMASS.

&&

.DISCUSSION...A STRONG UPPER RIDGE IS CENTERED OVER CO THIS EVE AND
A DEEP CLOSED LOW IS SPINNING OFF THE WEST COAST. UT IS UNDER A
WARM DRY SWLY FLOW IN BETWEEN THESE FEATURES WITH CLEAR SKIES AND
MILD TEMPS. THE LOCAL BREEZY AFTERNOON SOUTH WINDS ARE
DIMINISHING BUT COULD PERSIST IN A FEW SPOTS OVERNIGHT. NEAR
RECORD HIGHS WERE NOTED TODAY WITH A FEW SITES REPORTING RECORD
READINGS.

THE OFFSHORE LOW STARTS MOVING INLAND TOMORROW WITH LOWERING
HEIGHTS AND INCREASING SWLY FLOW OVER THE CWA. THE SURFACE
GRADIENT ALSO TIGHTENS UP AND EXPECT WINDY CONDITIONS ACROSS THE
CWA FROM ABOUT LATE MORNING THRU LATE EVENING. CURRENT WIND
ADVISORY LOOKS ON TRACK AND NEW 00Z NAM WOULD SUPPORT EXPANDING
IT INTO THE SALT LAKE AND TOOELE VALLEYS. THIS WOULD PROBABLY BE
WARRANTED IF REMAINING 00Z GUIDANCE SUPPORTS IT AS WELL.

THE AIRMASS COOLS A LITTLE WITH THE LOWERING HEIGHTS TOMORROW AND
SOME HIGH CLOUDINESS OUT AHEAD OF THE EPAC LOW MOVING OVER THE CWA
IN THE AFTN. ALL THIS POINTS TO A POTENTIAL FOR MAX TEMPS TOMORROW
TO BE A LITTLE COOLER THAN TODAY. HOWEVER...THE WARM AIRMASS IN
PLACE AND THE INCREASING SLY FLOW ALOFT TONIGHT SHOULD PREVENT
TEMPS FROM GETTING VERY CHILLY AND A WARMER START SHOULD BRING
MAXES UP TO AT LEAST EQUAL TODAYS.

THIS NEW NAM IS NOT AS AMPLIFIED WITH THE PAC TROF ONCE IT MOVES
INLAND AS EARLIER RUNS AND OTHER GUIDANCE...NOW KEEPING THE 500
MB COLD AIR OFF TO OUR NORTH AND NOT AS COLD AT 700 MB EITHER. IT
ALSO IS DRIER THAN PREV AND OTHER GUIDANCE WITH BARELY ANY PRECIP
AT ALL FOR THE CWA EITHER WITH THE INITIAL WEAK FRONT BEFORE DAWN
SUNDAY OR THE SECONDARY PUSH SUN EVE. POST FRONTAL WINDS ARE ALSO
NOT AS STRONG. SO IF OTHER GUIDANCE TRENDS TOWARDS THIS SOLUTION
WE WILL NEED TO LOWER POPS SIGNIFICANTLY FOR THIS EVENT.

FOR NOW NO SHORT TERM UPDATES NEEDED.

&&

.AVIATION...WINDS AT THE SLC TERMINAL ARE EXPECTED TO REMAIN
SOUTHERLY THROUGH THE NIGHT AND SATURDAY. WINDS WILL INCREASE
SATURDAY MORNING BECOMING GUSTY AFTER ABOUT 15Z.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...WIND ADVISORY FROM NOON SATURDAY TO MIDNIGHT MDT SATURDAY NIGHT
     FOR UTZ005-015-016.

WY...NONE.
&&

$$

WILENSKY/KRUSE

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

FOR FREQUENTLY ASKED QUESTIONS ABOUT THE AREA FORECAST DISCUSSION
VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY/GENERAL/AFD_FAQS.PHP (ALL LOWER CASE)



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