Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 310259
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
859 PM MDT THU JUL 30 2015

.SYNOPSIS...A RIDGE OF HIGH PRESSURE WILL REMAIN OVER THE REGION
THROUGH THE END OF THE WEEK...THEN SHIFT EASTWARD SUNDAY.
MOISTURE WILL REMAIN LIMITED TO FAR SOUTHERN UTAH THROUGH
FRIDAY...THEN SPREAD NORTHWARD LATE IN THE WEEKEND.

&&

.DISCUSSION...A LARGE BROAD NW-SE ORIENTED UPPER-LEVEL RIDGE
REMAINS FROM THE SOUTHERN PLAINS WESTWARD THROUGH UTAH AND NEVADA
INTO NORTHERN CALIFORNIA THIS EVE. THE MEAN LAYER FLOW BELOW 500
MB PLACES A HIGH CENTER NEAR THE OR/NV/CA TRIPLE POINT WITH A
LIGHT NORTHERLY FLOW OVER OUR CWA. THIS IS KEEPING THE DEEP
MOISTURE POOLED JUST TO OUR SOUTH FROM MAKING IT VERY FAR INTO OUR
CWA.

HOWEVER THERE WAS ENOUGH IN PLACE TO SET OFF A FEW LATE AFTN
SHOWERS ACROSS THE SOUTH AND EVEN A LONE TSTM JUST WEST OF ST
GEORGE. A FEW SMALL RETURNS ON THE RADAR PERSIST AT THIS TIME NEAR
LAKE POWELL WESTWARD TOWARDS KANAB AND WILL LEAVE THE SLIGHT
CHANCE MENTION OF SHOWERS FOR THE EVE IN THE FORECAST.

LITTLE CHANGE IN THIS OVERALL PATTERN IS FORECAST THRU SAT IN THE
NEW 00Z NAM THEN THE HIGH RECENTERS OVER SRN CO SAT NIGHT AND THE
FLOW OVER THE CWA FLIPS TO SWLY ALLOWING THE MOISTURE TO SPREAD
NORTH ON SUN WITH A CORRESPONDING INCREASE IN MOSTLY HIGH BASED
CONVECTION.

UPDATED FORECASTS EARLIER TO MAKE LOW POPS MORE WIDESPREAD ACROSS
THE SOUTH FOR THIS EVE. NO ADDITIONAL UPDATES PLANNED.

&&

.AVIATION...NORTHERLY WINDS WILL PREVAIL AT THE SLC TERMINAL
THROUGH AROUND 04Z BEFORE RETURNING TO SOUTHERLY.

&&

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

$$

WILENSKY

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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