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000
FXUS65 KSLC 050528
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1028 PM MST WED DEC 4 2013

.SYNOPSIS...THE FORECAST AREA WILL REMAIN UNDER A VERY COLD UPPER
LEVEL TROUGH THROUGH THE END OF WEEK. THE NEXT COLD CANADIAN STORM
SYSTEM WILL IMPACT THE AREA OVER THE WEEKEND.

&&

.DISCUSSION...THE VERY COLD UPPER LEVEL TROUGH EXTENDING FROM
CENTRAL CANADA SOUTH INTO THE GREAT BASIN WILL REMAIN IN PLACE
THROUGH THURSDAY NIGHT. THIS TROUGH WILL WEAKEN AS IT EJECTS EAST
AHEAD OF A NEW CANADIAN STORM SYSTEM SCHEDULED TO SETTLE INTO THE
BASIN THIS WEEKEND.

INCREASING CLOUDS ACROSS NORTHWEST UTAH THIS EVENING ARE
ASSOCIATED WITH LOW-LEVEL WARM ADVECTION AHEAD OF WEAK SHORTWAVE
OVER SOUTHWEST IDAHO/NORTHERN NEVADA. THE WEAK THERMALLY-DRIVEN
LIFT HAS BEEN SUFFICIENT TO GENERATE FLURRIES OR LIGHT
ACCUMULATING SNOW. HAVE UPDATED THE FORECAST FOR MORE CLOUDS AND
LIGHT PRECIP...AND TO HOLD TEMPERATURES FAIRLY STEADY THROUGH THE
BALANCE OF THE NIGHT.

SOUTHERN UTAH CLEARED QUICKLY EARLY THIS EVENING. THE RESULT HAS
BEEN GOOD RADIATIONAL COOLING WITH TEMPS PLUNGING INTO THE
SINGLE-DIGITS BOTH SIDES OF ZERO. ALSO UPDATED ZONES DOWN SOUTH
DUE TO THE CLEAR SKIES AND LOWS ALREADY AT OR BELOW FORECAST.

THE NEXT CANADIAN TROUGH WILL SETTLE INTO THE MEAN TROUGH
POSITION ACROSS THE INTERIOR WEST THIS WEEKEND. VERY COLD AIR
TRAPPED IN THE VALLEYS COULD SET UP A PERIOD OF WARM
ADVECTION SNOWS AHEAD OF THE TROUGH SATURDAY...FOLLOWED BY A MORE
WIDESPREAD PRECIP EVENT AS THE TROUGH MOVES THROUGH THE REGION.

&&

.AVIATION...CEILINGS 6000 FEET WILL RETURN TO THE KSLC TERMINAL
AFTER 07Z. LIGHT SNOW ACROSS FAR NORTHWEST LATE THIS EVENING
COULD SPREAD IN THE TERMINAL AREA AFTER 09Z. MVFR CEILINGS/VSBYS
WILL ACCOMPANY ANY SNOWFALL. WINDS WILL REMAIN LIGHT OUT THE
SOUTHEAST OVERNIGHT...THEN TURN TO LIGHT NORTH AROUND 14Z.

&&

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

$$

CONGER

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)