FXUS65 KSLC 252148
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
248 PM MST WED NOV 25 2009
.SYNOPSIS...HIGH PRESSURE ALOFT WILL STRENGTHEN AND REMAIN ACROSS
THE REGION THROUGH THE LATTER HALF OF THE WEEK. A PACIFIC STORM
SYSTEM IS EXPECTED TO MOVE INTO THE GREAT BASIN LATE FRIDAY AND
SATURDAY.
&&
.DISCUSSION...HIGH PRESSURE CONTINUES TO BUILD OVER THE
CWA...STRENGTHENING VALLEY INVERSIONS...PARTICULARLY ACROSS THE
NORTHERN PORTION OF THE CWA. HIGH PRESSURE BEGINS MIGRATING
EASTWARD TOMORROW AFTERNOON AHEAD OF AN APPROACHING SYSTEM. AS THE
HIGH PRESSURE MOVE TO THE EAST...700MB WINDS WILL INCREASE FROM
THE SOUTHWEST. THIS MAY RESULT IN SLIGHTLY BETTER MIXING
TOMORROW...BUT MAINLY ACROSS THE HIGHER ELEVATION AREAS. 700MB
TEMPS CONTINUE TO WARM...SO THOSE AREAS THAT DO MIX TOMORROW WILL
SEE MUCH WARMER TEMPERATURES THAN TODAY.
THE APPROACHING SYSTEM IS EXPECTED TO SEND A COLD FRONT ACROSS THE
CWA SATURDAY. MODELS CONTINUE TO SHOW THE SYSTEM WEAKENING AND
SPLITTING AS IT MOVES ACROSS THE GREAT BASIN. BY THE TIME THE COLD
FRONT REACHES THE STATE...IT WILL BE QUITE WEAK. THE FRONT IS
EXPECTED TO MOVE ACROSS THE CWA BEGINNING SATURDAY MORNING. WITH
LITTLE DYNAMIC SUPPORT AND LIMITED MOISTURE...SIGNIFICANT SNOWFALL IS NOT
EXPECTED WITH THE FRONT. THE GFS SHOW A VERY WEAK FRONT...THAT
BARELY MAKES IT TO CENTRAL UTAH. THE EC DEPICTS A SLIGHTLY
STRONGER FRONT THAT ADVANCES THROUGH MOST OF THE CWA BEFORE
FALLING APART. LEFT POPS ACROSS THE NORTHERN TWO THIRDS OF THE CWA
SATURDAY AFTERNOON IN PLACE TO ACCOUNT FOR THE UNCERTAINTY BETWEEN
MODEL SOLUTIONS.
BEHIND THE SYSTEM SATURDAY...HIGH PRESSURE WILL BRIEFLY RETURN.
BOTH THE EC AND GFS DEPICT ANOTHER SYSTEM MOVING ACROSS THE STATE
EARLY NEXT WEEK.
&&
.AVIATION...SURFACE WINDS AT THE SLC TERMINAL ARE EXPECTED TO SWITCH
BACK TO THE SOUTHEAST BETWEEN 02Z AND 03Z. OTHERWISE...VFR
CONDITIONS WILL PREVAIL THROUGH THIS EVENING UNDER MOSTLY CLEAR
SKIES.
&&
.SLC WATCHES/WARNINGS/ADVISORIES...
UT...NONE.
WY...NONE.
&&
$$
PUBLIC...HOSENFELD
AVIATION...SCHOENING
FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
