FXUS65 KSLC 081747
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1047 AM MST TUE DEC 8 2009

.SYNOPSIS..A STORM SYSTEM THAT BROUGHT WIDESPREAD SNOW TO THE AREA
HAS MOVED EAST INTO COLORADO THIS MORNING. A WEAK SECONDARY
WEATHER DISTURBANCE WILL CROSS UTAH...FOLLOWED BY VERY COLD
TEMPERATURES FOR THE LATTER HALF OF THE WEEK.

&&

.DISCUSSION...WELL-DEFINED UPPER LOW MOVING INTO ERN COLORADO LATE
THIS MORNING WILL CONTINUE E-NE AWAY FROM UTAH THIS AFTERNOON. THE
HEAVIEST SNOWS HAVE ENDED ACROSS THE FORECAST AREA...THOUGH
ACCUMULATING SNOWS WILL CONTINUE OVER THE HIGHER TERRAIN IN THE
COLD/UNSTABLE AIR THROUGH LATE AFTERNOON. ALSO LOOKING AT
LINGERING SNOW ALONG THE I-15 CORRIDOR IN CNTRL/SW UTAH AS THE
W-NW FLOW BANKS INTO THE MOUNTAINS. A LAKE EFFECT BAND HAS ALSO
FORMED ALONG THE SALT LAKE/TOOELE COUNTY LINE. THIS BAND WILL
PRODUCE 1-2 INCHES PER HOUR THROUGH THE BALANCE OF THE MORNING
BEFORE DISSIPATING DURING THE EARLY AFTERNOON.

A SECONDARY UPPER TROUGH CURRENTLY OVER THE PACIFIC NW WILL TURN SE 
INTO UTAH TONIGHT. THIS FEATURE WILL BRING WEAK DYNAMIC LIFT AND
STILL COLDER MID-LEVEL AIR THROUGH NRN UTAH LATE TONIGHT. LOOKING
AT A QUICK SHOT OF LIGHT SNOW FOR THE NORTH OVERNIGHT. THE
ASSOCIATED CLOUD COVER WILL HELP TO KEEP TEMPS FROM A FREE FALL
TONIGHT...THOUGH READINGS WILL STILL BE BELOW NORMAL. SRN UTAH
WILL LIKELY SEE VERY COLD TEMPS OWING TO LIMITED CLOUD COVER AND
FRESH SNOW.

GENERALLY CLEAR SKIES...NEW SNOW COVER AND LIGHT WINDS SHOULD
DRIVE TEMPS EVEN LOWER WEDNESDAY NIGHT. THURSDAY NIGHT MAY ONLY BE
SLIGHTLY WARMER AS CLOUD COVER INCREASES LATE. 

HAVE ISSUED AN UPDATE TO REMOVE SOME OF THE HIGHLIGHTS AND LOWER
TEMPS A BIT TODAY.

&&

.AVIATION...SNOW AT THE SLC TERMINAL IS EXPECTED TO BECOME MORE 
SHOWERY THIS AFTERNOON...WITH PRIMARILY LOW-END MVFR TO HIGH-END IFR 
CONDITIONS IN THESE SHOWERS. IN ADDITION...A LAKE EFFECT BAND HAS 
FORMED WEST OF THE TERMINAL. IF THIS BAND MOVES OVER THE 
TERMINAL...A PERIOD OF HEAVY SNOWFALL WOULD OCCUR. EVEN DURING 
BREAKS IN SNOWFALL...CEILINGS WILL STAY BELOW 7000FT AGL THROUGH AT 
LEAST 21Z. WINDS WILL REMAIN OUT OF THE NORTHWEST THROUGHOUT THE DAY.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...WINTER STORM WARNING UNTIL 4 PM TUESDAY FOR UTZ003-UTZ008-UTZ009-
     UTZ010-UTZ517-UTZ518.

     WINTER STORM WARNING UNTIL NOON TUESDAY FOR UTZ014-UTZ015-UTZ016.

     WINTER WEATHER ADVISORY UNTIL 4 PM TUESDAY FOR UTZ002-UTZ004-
     UTZ006.

WY...NONE.

&&

$$

PUBLIC...CONGER
AVIATION...SCHOENING

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