Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 260333
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
933 PM MDT MON AUG 25 2014

.SYNOPSIS...THE NEXT STORM SYSTEM WILL MOVE SLOWLY ACROSS THE
REGION TONIGHT THROUGH WEDNESDAY. HIGH PRESSURE WILL RETURN TO
THE AREA FOR THE LATTER PART OF THE WEEK.

&&

.DISCUSSION...AN UPPER LEVEL TROUGH REMAINS OVER THE WESTERN GREAT
BASIN THIS EVENING WITH UTAH UNDER A SOUTHWEST FLOW ALOFT. A SURFACE
TROUGH WAS ANALYZED ACROSS CENTRAL UTAH. THE BULK OF THUNDERSTORMS
THIS AFTERNOON AND EVENING OCCURRED ACROSS MAINLY THE NORTHEASTERN
QUADRANT OF THE FORECAST AREA AHEAD OF THE SLOWLY ADVANCING TROUGH.
MOISTURE HAS ALSO BEGUN TO INCREASE FROM THE SOUTH...BUT THERE WAS
NOT MUCH IN THE WAY OF DYNAMICS AVAILABLE TO ACT ON THIS MOISTURE
AND INSTABILITY THERE HAD BEEN RATHER MODEST. FOR THE REST OF THE
NIGHT...EXPECT SHOWERS ACROSS THE NORTHEAST TO GRADUALLY WANE...BUT
MODELS DO INDICATE SOME ADDITIONAL DEVELOPMENT TO TAKE PLACE ACROSS
NORTHWEST UTAH LATE TONIGHT.

AS THE TROUGH CONTINUES TO CARVE SOUTHEAST INTO UTAH
TOMORROW...SHOWERS AND THUNDERSTORMS WILL FIRE UP ACROSS MUCH OF THE
AREA...WITH COOLER TEMPERATURES EXPECTED ACROSS MOST LOCALES.
PARTICULAR INTEREST SHOULD BE FOCUSED ON SOUTHERN AND CENTRAL UTAH
WHERE HEAVY RAIN WILL BE A POSSIBILITY AS PWATS WILL CONTINUE TO
TREND UPWARD TONIGHT INTO TOMORROW MORNING. THE TROUGH WILL CONTINUE
ITS SLOW MARCH EASTWARD ON WEDNESDAY...BUT EVEN AS THE LOW CENTER
EXITS THE FORECAST AREA DURING THE AFTERNOON HOURS...MOISTURE
WRAPPING AROUND THIS LOW WILL CONTINUE TO ALLOW SHOWERS TO DEVELOP
OVER THE MOUNTAINS AND EAST.

UPDATED TO MAKE ADJUSTMENTS TO POP/SKY...MOST NOTABLY TO LOWER POPS
ACROSS THE SOUTH FOR THE REST OF THE NIGHT SINCE MOST MODELS DO NOT
INDICATE MUCH ACTIVITY THERE UNTIL TOMORROW MORNING.

&&

.AVIATION...NORTH WINDS WITH PREVAILING VFR CONDITIONS CAN BE
EXPECTED THROUGH 04-05Z AT THE KSLC TERMINAL...WITH A WIND SHIFT
BACK TO THE SOUTH BY 06Z. THERE IS A 10 PERCENT CHANCE OF SHOWERS
AND THUNDERSTORMS AT THE TERMINAL BETWEEN 07-11Z.

&&

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

$$

CHENG

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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