Weather Service Report


691 
FXUS65 KSLC 191717
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1117 AM MDT SAT APR 19 2014

.SYNOPSIS...A WEAK STORM SYSTEM WILL MOVE SLOWLY ACROSS THE
REGION THROUGH THE WEEKEND. A SIGNIFICANT WARMING TREND IS THEN
EXPECTED FOR THE EARLY PORTION OF THE WEEK AHEAD OF A STRONGER
STORM WHICH WILL IMPACT THE AREA BY MIDWEEK.


&&

.DISCUSSION...UPPER LEVEL LOW MOVING SLOWLY ACROSS WESTERN ARIZONA THIS
MORNING. WITH CLOSED LOW TO THE SOUTH...MID LEVEL DEFORMATION
ZONE STRETCHES FROM SOUTHWEST UTAH TO SOUTHWEST WYOMING. THIS
DEFORMATION AXIS WILL DRIFT EAST THROUGH THE DAY. RELATIVELY MOIST
AIRMASS IN PLACE WITH PRECIPITABLE WATER VALUES ACROSS THE STATE
IN EXCESS OF .50". NAM AND GFS BOTH INDICATE WEAK SURFACE-BASED
CAPE THIS AFTERNOON. WITH FORCING ASSOCIATED WITH DEFORMATION ZONE
AND MOIST AIRMASS IN PLACE...ANTICIPATE SCATTERED VALLEY SHOWERS
AND NUMEROUS MOUNTAIN SHOWERS THIS AFTERNOON ALONG AND EAST OF THE
DEFORMATION AXIS. ADDITIONALLY...EXPECT SHOWERS AND ISOLATED
STORMS TO DEVELOP OVER THE HIGHER TERRAIN IN EASTERN NEVADA AND
DRIFT INTO THE WEST CENTRAL AND SOUTHWEST PORTIONS OF THE STATE
THIS AFTERNOON AND EVENING.

WITH THIS UPDATE...LOWERED VALLEY POPS IN EAST CENTRAL UTAH AND
THE UINTA BASIN AS IT APPEARS THAT CONVECTION WILL BE SCATTERED IN
COVERAGE OVER VALLEY LOCATIONS. ALSO...TRIMMED POPS A BIT IN
NORTHWEST UTAH GIVEN ITS LOCATION IN LARGER SCALE REGION OF
SUBSIDENCE NORTHWEST OF THE DEFORMATION AXIS. ALSO LOWERED
AFTERNOON MAX TEMPERATURES A BUT IN EASTERN ZONES GIVEN THE
EXTENSIVE CLOUD COVER OVER THAT AREA.

&&

.AVIATION...VFR CONDITIONS ARE EXPECTED AT THE SLC TERMINAL 
THROUGHOUT THE DAY WITH MOSTLY CLOUDY SKIES. LIGHT NORTHWEST WINDS 
ARE EXPECTED TO SHIFT TO THE SOUTHEAST BETWEEN 03Z AND 04Z. THERE IS 
A 20 PERCENT CHANCE THAT SHOWERS IN THE VICINITY OF THE TERMINAL 
WILL RESULT IN PERIODS OF GUSTY AND/OR ERRATIC WINDS THIS AFTERNOON.

&& 

&&

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

$$

PUBLIC...GRAHAM
AVIATION...YOUNG

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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