Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 181648
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
948 AM MST THU DEC 18 2014

.SYNOPSIS...A WEAK WEATHER DISTURBANCE CROSSING THE AREA TODAY WILL
YIELD TO A WEAK RIDGE EARLY FRIDAY. AN INCREASINGLY MOIST NORTHWEST
FLOW AIMED AT NORTHERN UTAH IS EXPECTED FOR THE WEEKEND INTO EARLY
NEXT WEEK.

&&

.DISCUSSION...A WEAK SPLIT TROUGH IS CROSSING THE EASTERN GREAT
BASIN THIS MORNING AND WILL CONTINUE TO SLIDE ACROSS UTAH THIS
AFTERNOON. SPOTTY WEAK SHOWERS HAVE BEEN NOTED ON RADAR AND WILL BE
THE NORM THROUGH THE REST OF THE DAY. SNOW LEVELS ARE NEAR 4000FT AS
A DUSTING OF SNOW HAS BEEN REPORTED IN A FEW VALLEY LOCALES...BUT
MAY RISE SLIGHTLY FOR THIS AFTERNOON. LITTLE OR NO IMPACT EXPECTED
AS ACCUMULATIONS WILL BE MINOR EVERYWHERE. OTHERWISE...PATCHY FOG IS
STILL BEING REPORTED IN SOME CENTRAL AND SOUTHERN VALLEYS...BUT THIS
IS EXPECTED TO GRADUALLY CLEAR THROUGH THE REMAINDER OF THE MORNING.

HIGH PRESSURE WILL BUILD OVER THE AREA LATE TONIGHT INTO TOMORROW
BUT WILL BE SHORT-LIVED AS ANOTHER WEAK DISTURBANCE TRANSITS THE
AREA TOMORROW NIGHT THROUGH SATURDAY MORNING. AFTER THAT...SURGE OF
MOISTURE IN NORTHWEST FLOW ALOFT COULD BRING A SIGNIFICANT AND
PROLONGED PRECIPITATION EVENT TO NORTHERN UTAH...PARTICULARLY THE
MOUNTAINS...LATE SATURDAY NIGHT THROUGH MONDAY NIGHT. HOWEVER...WARM
AIRMASS LIKELY TO KEEP SNOW LEVELS AND SNOW DENSITIES HIGH.

UPDATED FORECAST TO INCREASE POPS FOR THE REMAINDER OF THE DAY.

&&

.AVIATION...PERIODIC CIGS AT OR BELOW 6000FT AGL WILL PERSIST AT THE
KSLC TERMINAL THROUGH 19Z DUE TO SNOW SHOWERS IN THE VICINITY OF THE
TERMINAL. CIGS ARE EXPECTED TO SCATTER AND LIFT MORE SIGNIFICANTLY
THIS AFTERNOON. LIGHT AND VARIABLE WINDS ARE EXPECTED TO BECOME A
PREVAILING NORTHWEST AROUND 19Z AND REMAIN IN PLACE THROUGH THIS
EVENING.

&&

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

$$

CHENG/MERRILL

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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