Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 201746
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1046 AM MST TUE JAN 20 2015

.SYNOPSIS...A WEAK WEATHER DISTURBANCE WILL IMPACT EXTREME SOUTHERN
UTAH TONIGHT INTO WEDNESDAY...FOLLOWED BY HIGH PRESSURE ALOFT
EXPANDING ACROSS THE WESTERN STATES DURING THE LATTER HALF OF THE
WEEK.


&&

.DISCUSSION...A LIGHT NORTHWEST FLOW ALOFT PREVAILS ACROSS THE
INTERMOUNTAIN REGION THIS MORNING...DOWNWIND FROM A MID LEVEL
RIDGE POSITIONED JUST OFF THE WEST COAST. A LARGE AREA OF STRATUS
REMAINS IN PLACE ACROSS WEST CENTRAL AND SOUTHWEST UT...WHILE
FURTHER EAST MORE LOCALIZED STRATUS AND FOG REMAINS IN PLACE
ACROSS THE UINTA BASIN AS WELL AS THE LAKE POWELL AREA. UPDATED
THE FORECAST EARLIER TO ACCOUNT FOR TRENDS IN SKY COVER.

A FAIRLY BENIGN WEATHER PATTERN WILL PREVAIL THROUGH THE REMAINDER
OF THE WEEK. A WEAK SHORTWAVE TROUGH CURRENTLY ALONG THE CENTRAL
CA COASTLINE WILL PASS SOUTH OF THE FORECAST AREA TONIGHT THROUGH
WEDNESDAY...WITH ANY PRECIP THREAT REMAINING LARGELY SOUTH OF THE
AZ BORDER. MEANWHILE ANOTHER SHORTWAVE IS FORECAST TO DIG SOUTH
THROUGH THE CENTRAL ROCKIES WEDNESDAY HAVING LITTLE IMPACT ON THE
FORECAST AREA ASIDE FROM A SLIGHT ENHANCEMENT IN LOW LEVEL COLD
ADVECTION.

MAY SEE A GRADUAL INCREASE IN URBAN HAZE THROUGH THE REMAINDER OF
THE WEEK...HOWEVER WITH 700MB TEMPS REMAINING FAIRLY COOL THROUGH
THE PERIOD ANY VALLEY INVERSIONS SHOULD REMAIN FAIRLY WEAK.


&&

.AVIATION...LIGHT NORTHERLY WINDS WITH VFR CONDITIONS ARE EXPECTED
TO PREVAIL AT KSLC THROUGH THE AFTERNOON HOURS.

&&

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

$$

SEAMAN

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)



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