FXUS65 KSLC 142258
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
358 PM MST MON DEC 14 2009

.SYNOPSIS...HIGH PRESSURE WILL DEVELOP OVER THE AREA TONIGHT AND
PERSIST THROUGH THE WEEKEND. MOISTURE IN A MILD WESTERLY FLOW
WILL GRAZE NORTHERN UTAH LATER TUESDAY THROUGH THURSDAY.

&&

.DISCUSSION...HIGH PRESSURE IS MOVING INTO THE GREAT BASIN TONIGHT
AND LINGERING CLOUDS AND ISOLATED SNOW SHOWERS OVER THE MTS WILL
QUICKLY END THIS EVE. 

CLOUDS WILL INCREASE AGAIN LATER TONIGHT THRU TUE AS THE UPSTREAM
RIDGE AXIS SHIFTS EAST AND MOISTURE STREAMING INTO THE PACNW SAGS
INTO NRN UT. WE REMAIN AT THE SRN FRINGE OF THIS STREAM BUT COULD
SEE A LITTLE PRECIP ACROSS THE FAR N TUE NIGHT INTO WED WITH SNOW
LEVELS NEAR 6500 FT.

WITH THE WIDESPREAD NEW SNOW COVER...EXPECT INVERSIONS TO BECOME
STRONG IN THE ERN VALLEYS THIS WEEK AND FOG IS POSSIBLE. SOME OF
THIS COULD BE LOCALLY DENSE IN THE NIGHT AND MORNING HOURS. THESE
INVERSIONS COULD BECOME QUITE ENTRENCHED AND LAST INTO THE
WEEKEND.

CLOUDS WILL KEEP THE NORTH FROM GETTING TOO STAGNANT THROUGH AT
LEAST FRI. MED RANGE MODELS BECOME QUITE DIVERGENT AFTER FRI AND
CONFIDENCE IS LOW IN THE FORECASTS AFTER THAT TIME.

&&

.AVIATION...VFR CONDITIONS WILL CONTINUE THROUGH THE EVENING AT THE 
SLC TERMINAL WITH SCATTERED CLOUDS. NORTHWEST WINDS ARE EXPECTED TO 
SHIFT TO THE SOUTHEAST BETWEEN 03Z AND 04Z.

&&

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

&&

$$

WILENSKY/TRAPHAGAN

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)