Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 301614
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1014 AM MDT TUE JUN 30 2015

.SYNOPSIS...HIGH PRESSURE ALOFT WILL REMAIN ANCHORED ACROSS THE
GREAT BASIN THROUGH THE MIDDLE OF THE WEEK. THE CENTER OF THE HIGH
PRESSURE WILL SHIFT TO THE FOUR CORNERS REGION THIS
WEEKEND...ALLOWING MOISTURE ALONG WITH MODESTLY COOLER TEMPERATURES
TO MOVE INTO THE REGION BY EARLY NEXT WEEK.


&&

.DISCUSSION...HIGH PRESSURE REMAINS OVER THE FORECAST AREA THIS
MORNING...BUT IT HAS STARTED TO WEAKEN A BIT WITH A PACIFIC
NORTHWEST TROUGH MOVING OVER THE TOP OF IT. MOISTURE HAS INCREASED
ACROSS UTAH AND SOUTHWEST WYOMING...WITH SATELLITE DERIVED PWS
OVER 1.0 INCH IN MANY LOCATIONS...RESULTING IN SOME HIGH CLOUDS.
WITH ELEVATED MOISTURE IN PLACE...ISOLATED SHOWERS AND
THUNDERSTORMS ARE POSSIBLE OVER MOST LOCATIONS...WITH THE HIGHEST
POSSIBILITY OVER THE HIGHER TERRAIN. DUE TO THE CLOUDS AND
WEAKENED RIDGE...MAXES WILL BE JUST A FEW DEGREES COOLER THAN THE
NEAR RECORD VALUES OBSERVED YESTERDAY...THOUGH STILL 5-10F ABOVE
SEASONAL NORMS.

THE RIDGE STARTS TO REBUILD AGAIN WEDNESDAY...WITH THE AXIS
REDEVELOPING WEST OF THE FORECAST AREA. AS A RESULT...DRIER AIR
WILL MOVE IN FROM THE NORTH...SPREADING ACROSS THE ENTIRE AREA
THURSDAY. THIS WILL SIGNIFICANTLY DECREASE THE THREAT OF PRECIP
FOR THE LATTER HALF OF THE WORK WEEK. HOWEVER...THE RIDGE IS
PROGGED TO SLIDE EAST OVER THE WEEKEND...ALLOWING MOISTURE TO
RETURN FOR THE LATTER HALF OF THE WEEKEND INTO EARLY NEXT WEEK.

NO UPDATES EXPECTED TO THE FORECAST THIS MORNING.

&&

.AVIATION...VFR CONDITIONS WILL PREVAIL AT THE SLC TERMINAL THROUGH
THE TAF PERIOD. SHOWERS/THUNDERSTORMS SHOULD ONCE AGAIN FORM OVER
THE SURROUNDING HIGHER TERRAIN DURING THE AFTERNOON. THIS CONVECTION
WILL LIKELY DISSIPATE AS IT MOVES OFF THE TERRAIN...WITH A 20
PERCENT CHANCE THAT OUTFLOW WINDS WILL IMPACT THE TERMINAL BETWEEN
23Z AND 03Z.

&&

.FIRE WEATHER...THE RIDGE WILL FLATTEN SOME THIS AFTERNOON INTO
TONIGHT AS A DISTURBANCE MOVES ACROSS THE NORTHERN ROCKIES INTO THE
HIGH PLAINS. MOISTURE WILL BECOME SOMEWHAT CONCENTRATED ALONG THIS
BOUNDARY THAT WILL SHIFT WINDS ALOFT FROM WESTERLY EARLY TODAY TO
NORTHWEST BY TONIGHT. SCATTERED MOUNTAIN THUNDERSTORMS WITH ISOLATED
VALLEY THUNDERSTORMS ARE EXPECTED AS THE TAIL OF THIS DISTURBANCE
MOVES ACROSS THE REGION. SOME WETTING RAINS ARE POSSIBLE DUE TO THE
INCREASE IN PRECIPITABLE WATER...ALTHOUGH LOW LEVELS STILL REMAIN
RATHER DRY. THE FLOW TURNS NORTHWEST WEDNESDAY AND THIS WILL BE A
DRY FLOW WHICH WILL SPREAD ACROSS NORTHERN UTAH WEDNESDAY AND ACROSS
THE ENTIRE AREA THURSDAY. MINIMUM RHS WILL ONCE AGAIN FALL INTO THE
LOW TEENS AND SINGLE DIGITS IN NORTHERN UTAH VALLEYS WEDNESDAY AND
MOST AREAS VALLEYS THURSDAY.

&&

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

$$

PUBLIC...TRAPHAGAN
AVIATION...CONGER
FIRE WEATHER...STRUTHWOLF

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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