Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 291637
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1037 AM MDT TUE JUL 29 2014

.SYNOPSIS...A VERY MOIST AIR MASS WILL REMAIN OVER THE AREA THROUGH
EARLY WEDNESDAY. A SLOW DRYING TREND WILL TAKE HOLD BEGINNING
WEDNESDAY AS HIGH PRESSURE ALOFT STRENGTHENS ACROSS THE INTERIOR
WEST.


&&

.DISCUSSION...TWO MID LEVEL CIRCULATION CENTERS WILL INTERACT WITH
A VERY MOIST AIRMASS TO BRING SHOWER AND THUNDERSTORM ACTIVITY TO
MUCH OF UTAH THROUGH THIS EVENING. THE PRECIPITABLE WATER VALUE OF
1.34 INCHES FROM THE 1200 UTC KSLC SOUNDING IS ABOUT 2.5 STANDARD
DEVIATIONS ABOVE NORMAL. THE FIRST CIRCULATION CENTER..LOCATED OVER
NORTHERN UTAH...WILL DRIFT SLOWLY TO THE EAST TODAY. EXPECT MOSTLY
CLOUDY SKIES OVER MUCH OF NORTHERN UTAH WITH NUMEROUS SHOWERS AND
THUNDERSTORMS THROUGH THE DAY. THE SECOND CIRCULATION CENTER
OPENS INTO AN OPEN WAVE AND MOVES INTO SOUTHWEST UTAH THIS
AFTERNOON. SOUTHERN UTAH IS RECEIVING A FAIR AMOUNT OF SUNSHINE
THIS MORNING AND THIS AREA WILL DESTABILIZE AS WE HEAD TOWARD
AFTERNOON. THUS EXPECT SCATTERED THUNDERSTORMS TO DEVELOP ACROSS
THE SOUTHERN PORTION OF THE STATE THIS AFTERNOON. WITH LIMITED
FLOW...MLCAPE VALUES OF 1000-1500 J/KG...AND A VERY MOISTURE RICH
ENVIRONMENT SOME STORMS WILL BE CAPABLE OF PRODUCING HEAVY RAIN
ACROSS THE STATE THIS AFTERNOON. IN THIS UPDATE HAVE INCREASED
POPS ACROSS SOUTHWEST UTAH AS WELL AS PORTIONS OF NORTHERN UTAH.

TEMPERATURES WILL BE A LITTLE COOLER TODAY WITH MOST WESTERN
VALLEYS SEEING MAX TEMPERATURES IN THE LOW TO MID 80S....WHILE
EASTERN VALLEYS HAVE HIGHS IN THE LOW TO MID 90S. THIS IS WELL
COVERED IN CURRENT GRIDS AND ONLY MINIMAL ADJUSTMENTS WERE MADE
THERE.


&&

.AVIATION...VFR CONDITIONS ARE EXPECTED TO PREVAIL THROUGH THE TAF
PERIOD AT THE SLC TERMINAL. LIGHT AND VARIABLE WINDS WILL BECOME
PREDOMINANTLY NORTH-NORTHWESTERLY BETWEEN 17-18Z. SHOWERS AND
THUNDERSTORMS IN THE VICINITY OF THE TERMINAL WILL CAUSE PERIODS OF
GUSTY AND/OR ERRATIC WINDS THIS AFTERNOON...WITH A 20 PERCENT CHANCE
OF MVFR CONDITIONS IN HEAVY RAIN AFTER 18Z.
&&

.FIRE WEATHER...MONSOONAL MOISTURE WILL REMAIN OVER THE DISTRICT
TODAY. FOCUS OF SHOWERS AND THUNDERSTORMS WILL BE OVER NORTHERN UTAH
BUT SCATTERED CONVECTION WILL OCCUR OVER SOUTHERN UTAH AS WELL. A
SLOW DRYING TREND WILL COMMENCE FOR THE MIDDLE TO LATTER PART OF THE
WEEK...THOUGH THE THREAT OF CONVECTION REMAINS. WINDS ARE EXPECTED
TO BE GENERALLY LIGHT OVER THE NEXT FEW DAYS WITH HIGH PRESSURE IN
PLACE.


&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...NONE.
WY...NONE.
&&

$$

PUBLIC...GRAHAM
FIRE WEATHER...TRAPHAGAN
AVIATION...VERZELLA

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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