Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 230402
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1002 PM MDT FRI MAY 22 2015

.SYNOPSIS...A SLOW MOVING LOW PRESSURE SYSTEM WILL TRACK NORTHEAST
ACROSS THE SOUTHERN AND EASTERN GREAT BASIN THIS WEEKEND.

&&

.DISCUSSION...A CLOSED LOW CENTERED OVER NORTHWEST ARIZONA IS STILL
ON TRACK TO CROSS SOUTH-CENTRAL THROUGH EAST-CENTRAL UTAH TONIGHT
AND TOMORROW. THE STRONGEST THUNDERSTORMS TODAY DEVELOPED ACROSS
NORTHERN UTAH...WHERE SCATTERED SHOWERS STILL LINGER BUT WITH MUCH
LESS INTENSITY. THIS SHOULD REMAIN THE TREND THROUGH MUCH OF THE
NIGHT. SHOWERS ACROSS SOUTHWESTERN AND PORTIONS OF CENTRAL UTAH
SHOULD TREND MORE DEVELOPMENTAL THROUGH THE NIGHT OWING TO LARGE-
SCALE LIFT TO THE NORTH AND WEST OF THE LOW.

STILL LOOKING AT WIDESPREAD PRECIPITATION FOR PARTS OF NORTHERN AND
WESTERN UTAH TOMORROW. HOWEVER...LATEST MODELS HAVE TRENDED TOWARDS
A SLOWER DEVELOPMENT OF PRECIPITATION...AFTER 12Z...AS WARM
ADVECTION ALOFT IS PROGGED TO TAKE LONGER TO STRENGTHEN.
NEVERTHELESS...ONCE IT GETS GOING EXPECT A PERIOD OF MODERATE
PRECIPITATION ACROSS SAID AREAS...AND WRAPPING BACK INTO SOUTHWEST
UTAH. PRECIPITATION IS THEN EXPECTED TO TAPER OFF NORTH TO SOUTH
BEGINNING LATE TOMORROW AFTERNOON THROUGH TOMORROW NIGHT AS A MORE
STABLE AIRMASS DEVELOPS IN THE WAKE OF AN EMBEDDED SHORTWAVE
ROTATING AROUND THE LOW.

UPDATED THE FORECAST MAINLY TO ADJUST POP/SKY FOR THE REMAINDER OF
THE NIGHT.

&&

.AVIATION...SOUTH WINDS ARE EXPECTED TO PREVAIL AT THE SLC TERMINAL
THROUGH THE NIGHT. THERE IS A 20 PERCENT CHANCE OF CIGS LOWERING
BELOW 7000FT BETWEEN 09-12Z...40 PERCENT AFTER 12Z AS SHOWERS BEGIN
TO DEVELOP IN THE VICINITY OF THE TERMINAL.

&&

.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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