Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 121605
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1005 AM MDT SAT APR 12 2014

.SYNOPSIS...A WEAK WEATHER SYSTEM WILL CROSS THE SOUTHERN PORTION
OF THE REGION TODAY. A SECOND STORM SYSTEM WILL PUSH A COLD FRONT
ACROSS NORTHERN UTAH TONIGHT...THEN CONTINUE SOUTHWARD DURING THE
DAY SUNDAY. HIGH PRESSURE WILL RETURN EARLY NEXT WEEK.

&&

.DISCUSSION...A WEAK MID-LEVEL CIRCULATION CURRENTLY OVER THE
SOUTHERN TIP OF NEVADA HAS PRODUCED A DEFORMATION AXIS ACROSS
SOUTHWEST THROUGH EAST-CENTRAL UTAH THIS MORNING. CLOUD
DEVELOPMENT CONCENTRATED ALONG THIS DEFORMATION SUGGESTS SOME
LIGHT PRECIP EXISTS. FAIRLY LARGE DEW POINT DEPRESSION ACROSS
THAT REGION SUGGESTS THAT MOST OF THE PRECIP IS VIRGA OR VERY
LIGHT MOUNTAIN SHOWERS AT THIS TIME. THE EASTWARD TRACK OF THE
REMNANT OF THE CIRCULATION CENTER ACROSS NORTHERN ARIZONA THIS
AFTERNOON WILL MAINTAIN A LOW-END CHANCE FOR ADDITIONAL LIGHT
SHOWERS...OR EVEN AN ISOLATED THUNDERSTORM AT MAX HEATING TIME
DURING THE MID TO LATE AFTERNOON.

THE UPPER TROUGH MOVING SOUTHEAST INTO THE PACIFIC NORTHWEST LATE
THIS MORNING WILL SETTLE INTO THE NORTHERN ROCKIES/GREAT BASIN FOR
TONIGHT THROUGH EARLY SUNDAY. THE ASSOCIATED SURFACE COLD FRONT
SHOULD REACH FAR NORTHERN UTAH LATE THIS EVENING...THEN STRENGTHEN
A BIT AS IT SWEEPS SOUTH THROUGH UTAH LATE TONIGHT/SUNDAY. PRECIP
ALONG THE FRONTAL BOUNDARY WILL BE SOMEWHAT LIMITED AS LIFT
GENERATED THROUGH THE MID-LEVEL TROUGH AND COLD AIR LAGS BACK
ACROSS CENTRAL IDAHO. PRECIP SHOULD EXPAND RATHER QUICKLY ALONG
AND BEHIND THE FRONT BEGINNING LATE THIS EVENING AS THE TROUGH
CATCHES UP AND INSTABILITY INCREASES WITH THE ARRIVAL OF THE COLD
POOL ALOFT. ORGANIZED CONVECTIVE PRECIP WILL LIKELY BE BEST
ORGANIZED NEAR AND IMMEDIATELY BEHIND THE FRONTAL BOUNDARY...WITH
SCATTERED INSTABILITY SHOWERS BACK ACROSS THE NORTHERN THIRD OF
THE STATE. MUCH COLDER AIR WILL FOLLOW THE FRONT...SO WILL
ANTICIPATED A DRAMATIC DECREASE IN TEMPS FROM TODAY INTO SUNDAY.

HIGH PRESSURE ALOFT WILL RETURN EARLY IN THE WEEK. TEMPS WILL TURN
UPWARD AGAIN MONDAY...THEN LEVEL OFF OR EVEN DROP A FEW DEGREES
TUESDAY AS HEIGHTS LOWER IN RESPONSE TO THE NEXT MID-LEVEL TROUGH
MOVING THROUGH THE PACIFIC NORTHWEST/NORTHERN ROCKIES.

&&

.AVIATION...THE SLC TERMINAL WILL SEE VFR CONDITIONS THROUGHOUT
THE DAY. LIGHT WINDS ARE EXPECTED TO SHIFT TO THE NORTHWEST BY
18Z. THERE IS A 20 PERCENT CHANCE THAT SHOWERS IN THE VICINITY OF
THE TERMINAL THIS AFTERNOON WILL RESULT IN PERIODS OF GUSTY AND/OR
ERRATIC WINDS.

&&

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

$$

PUBLIC...CONGER
AVIATION...TRAPHAGAN

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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