Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 042308
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
408 PM MST THU FEB 4 2016

.SYNOPSIS...A WEAK STORM SYSTEM WILL GRAZE NORTHERN UTAH TONIGHT.
STRONG HIGH PRESSURE WILL DEVELOP OVER THE REGION FOR THE WEEKEND
AND MUCH OF NEXT WEEK.

&&

.SHORT TERM (THROUGH 00Z MONDAY)...THE SOUTHERN BRANCH OF THE
SPLITTING TROUGH IS EXITING THE AREA THROUGH THE FOUR CORNERS AT
THIS TIME. IN THE WAKE OF THIS SYSTEM...LINGERING STRATUS REMAINS IN
PLACE ALONG THE SPINE OF UTAH WITH OCCASIONAL LIGHT FLURRIES STILL
BEING REPORTED. MEANWHILE...THE NORTHERN BRANCH WAVE IS SLIDING INTO
SOUTHEAST IDAHO AND IS STILL PROGGED TO GRAZE FAR NORTHERN UTAH AND
SOUTHWEST WYOMING TONIGHT. THIS WAVE WILL BRING WEAK LIFT TO
NORTHERN UTAH BUT VERY LITTLE ADDITIONAL COLD AIR ALOFT. EXPECT A
BRIEF PERIOD OF LIGHT SNOW ACROSS THE NORTHERN ZONES LATER THIS
EVENING AND OVERNIGHT WITH MINIMAL ADDITIONAL ACCUMULATION BEFORE
THE TROUGH EXITS THE AREA TOMORROW MORNING.

HIGH PRESSURE WILL BUILD INTO THE AREA TOMORROW WHILE TEMPERATURES
START TO WARM ALOFT. A WEAK TROUGH IS STILL EXPECTED TO RIDE OVER
THE RIDGE ON SATURDAY AND MAY MAINTAIN ENOUGH AMPLITUDE TO GRAZE FAR
NORTHERN UTAH. THE EC SOLUTION KEEPS THIS TROUGH FARTHER NORTH THAN
THE GFS/NAM/CANADIAN WHICH ALL BRING SOME LIGHT PRECIPITATION ALONG
THE IDAHO BORDER. THE RIDGE WILL REBOUND STRONGLY OVER THE WEST
COAST BY SUNDAY.

.LONG TERM (AFTER 00Z MONDAY)...UNDER A FAIRLY QUIET WEATHER
PATTERN...STRONG HIGH PRESSURE RIDGING WILL BEGIN BUILDING IN BY
LATE SUNDAY. TEMPERATURES ALOFT AT 700MB ARE GRADUALLY WARMING INTO
THE 2C TO 4C TEMPERATURE RANGE THROUGH EARLY IN THE WEEK. A RATHER
DRY AIRMASS IN PLACE AND WEAK WINDS WILL AID IN INVERSION SET UP AND
BUILDING THROUGH THE WEEK.

BY LATE IN THE WEEK FORECAST MODELS DIFFER ON INTRODUCING A NORTHERN
TRACKING TROUGH THROUGH THE PACIFIC NORTHWEST THAT WILL WEAKEN AND
BREAK DOWN THE RIDGE.

&&

.AVIATION...AT THE KSLC TERMINAL...MVFR CEILINGS WILL GRADUALLY
IMPROVE TO VFR AS LIGHT SNOW SHOWERS DISSIPATE BY THIS EVENING...03Z
TO 04Z. VISIBILITY MAY REMAIN BETWEEN 5 AND 10 MILES IN LIGHT HAZE
OVERNIGHT. WINDS ARE ALREADY SEEING A TURN BACK TO SOUTHWEST LATE
THIS AFTERNOON AND ARE EXPECTED TO PERSIST OVERNIGHT.

&&

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

$$

CHENG/DEWEY

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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