Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 161920 RRA
AFDSLC

AREA FORECAST DISCUSSION...RESENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
945 AM MDT THU APR 16 2015

.SYNOPSIS...A COLD UPPER LOW WILL REMAIN NEAR THE FOUR CORNERS
AREA TODAY THEN DRIFT SLOWLY EAST TONIGHT THROUGH FRIDAY. A COOL
NORTHWEST FLOW WILL DEVELOP FOR THE WEEKEND.


&&

.DISCUSSION...AN UPPER LOW SPINNING NEAR THE FOUR CORNERS REGION
WILL REMAIN IN PLACE TODAY...BEFORE DRIFTING EAST INTO CENTRAL CO
TONIGHT THROUGH FRIDAY. SNOWFALL ACROSS MUCH OF UT HAS DIMINISHED
OVER THE PAST FEW HOURS AS UPPER FORCING IS CURRENTLY AT A
LULL...AND PLAN TO DROP THE GOING WINTER WX ADVISORY FOR WEST
CENTRAL/SOUTHWEST UT.

THE NEXT LOBE ROTATING AROUND THIS UPPER LOW...COUPLED WITH
ANOTHER PLUME OF LOW-MID LEVEL WARM ADVECTION...IS CURRENTLY
MOVING WESTWARD ACROSS WESTERN CO AND IS FORECAST TO MOVE INTO
CENTRAL UT THIS AFTERNOON THROUGH THIS EVENING ENHANCING
PRECIPITATION ACROSS THE CENTRAL/SOUTHERN MOUNTAINS AS WELL AS THE
EASTERN VALLEYS. WITH RISING SNOW LEVELS AND WARMING TEMPERATURES
IMPACTS ACROSS THIS AREA WILL LIKELY BE MITIGATED. WILL HOLD ONTO
THE WINTER WX ADVISORY FOR THE HIGHER TERRAIN FOR NOW AND MONITOR
AS PRECIP DEVELOPS LATER ON. OTHERWISE HAVE DROPPED GOING ADVISORY
FOR SOUTHWEST WY WHERE SNOW HAS GENERALLY ABATED AND WEB CAMS
INDICATE ROAD CONDITIONS HAVE IMPROVED CONSIDERABLY. OTHERWISE
SREF INSTABILITY PARAMETERS SUGGEST SOME POTENTIAL FOR THUNDER
THIS AFTERNOON ACROSS CENTRAL AND SOUTHERN UT...AND WILL ADD
ISOLATED THUNDER TO THE GRIDS.

AS THE UPPER LOW DRIFTS EASTWARD LINGERING MOISTURE WILL MAINTAIN
A CHANCE FOR SHOWERS AND PERHAPS ISOLATED THUNDERSTORMS PRIMARILY
ALONG THE HIGHER TERRAIN DURING THE DAY FRIDAY...WHILE WARMING
700MB TEMPS YIELD A WARMING TREND AREA-WIDE.


&&

.AVIATION...THERE IS A 20 PERCENT CHANCE OF SNOW SHOWERS AT THE SLC
TERMINAL TODAY...WHICH COULD BRING BRIEF PERIODS OF IFR OR MVFR
CONDITIONS. NORTH WINDS SHOULD PREVAIL THROUGH AT LEAST 02Z THURSDAY
AND WILL BE GUSTY AT TIMES...WITH GUSTS REACHING AS HIGH AS 25 TO 35
MPH.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...WINTER WEATHER ADVISORY UNTIL 5 PM MDT THIS AFTERNOON FOR
UTZ010-     517-518.

WY...NONE.
&&

$$

SEAMAN/SCHOENING


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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