131
FXUS65 KSLC 071655
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
955 AM MST SAT NOV 7 2009
SYNOPSIS
A WESTERLY FLOW ALOFT WILL PERSIST ACROSS THE GREAT
BASIN INTO THE FIRST HALF OF NEXT WEEK. A WEAK COLD FRONT WILL
SAG SLOWLY SOUTH ACROSS NORTHERN UTAH TODAY...THEN STALL OVER THE
AREA TONIGHT.
DISCUSSION
A WEAK SHORTWAVE TROUGH THAT MOVED ACROSS THE NORTHERN
ROCKIES YESTERDAY HAS LEFT A BAROCLINIC ZONE DRAPED ACROSS SOUTHERN
IDAHO THIS MORNING. ANOTHER WEAK TROUGH CURRENTLY MOVING INTO THE
GREAT BASIN WILL PUSH THIS BAROCLINIC ZONE AND A SURFACE COLD FRONT
INTO NORTHERN UTAH THIS AFTERNOON. A FEW SHOWERS ARE CURRENTLY
ASSOCIATED WITH THIS BOUNDARY OVER SOUTHERN IDAHO...AND THESE MAY
SPREAD INTO NORTHERN UTAH LATER TODAY. HOWEVER...ANY PRECIPITATION
WILL REMAIN FAIRLY LIGHT WITH SNOW LEVELS MAINLY ABOVE 6000FT.
AFTER ANOTHER WEAK WAVE LATE SUNDAY...SOUTHWEST FLOW WILL INCREASE
AS A RIDGE BUILDS OVER THE AREA. TEMPERATURES WILL WARM THROUGHOUT
THE AREA FOR THE EARLY PART OF THE UPCOMING WEEK...AHEAD OF THE
NEXT STORM SYSTEM WHICH IS EXPECTED FOR THE MIDDLE TO LATTER PART OF
THE WEEK. ALTHOUGH THE LATEST MODELS SHOW A FAIR AMOUNT OF
SPREAD...THE TREND IS FOR COLDER TEMPERATURES WITH SNOW POSSIBLE FOR
THE LATTER HALF OF THE WEEK.
NO UPDATES EXPECTED AT THIS TIME.
AVIATION
A WEAK HIGH PRESSURE SYSTEM BUILDING OVER NORTHWEST UTAH
WILL HELP ENHANCE NORTHWEST WINDS AT THE SALT LAKE TERMINAL THROUGH
TODAY AND LIKELY THROUGH AT LEAST MIDNIGHT TONIGHT. SOME MID LEVEL
CLOUDINESS WILL SLOWLY THICKEN AND LOWER AFTER 02Z TONIGHT WITH A 30
PERCENT CHANCE OF LOWERING TO BETWEEN 7000 AND 10000 FT AGL AFTER
06Z.
SLC WATCHES/WARNINGS/ADVISORIES
UT...NONE.
WY...NONE.
PUBLIC...CHENG
AVIATION...STRUTHWOLF
FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
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