Area Forecast Discussion
Issued by NWS Salt Lake City, UT

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS65 KSLC 232208
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
408 PM MDT SUN AUG 23 2015

.SYNOPSIS...A RIDGE OF HIGH PRESSURE OVER THE REGION WILL PERSIST
THROUGH THE EARLY PART OF THE WEEK. MOISTURE WILL SPREAD NORTHWARD
ACROSS THE AREA MIDWEEK...AS AN UPPER LEVEL DISTURBANCES ROTATES
ACROSS THE REGION.

&&

.DISCUSSION...AXIS OF UPPER RIDGE REMAINS CENTERED OVER UTAH THIS
AFTERNOON. A WEAK EMBEDDED SHORTWAVE DISTURBANCE LIFTING NORTHEAST
ACROSS UTAH CONTINUES TO BRING MORE MOISTURE INTO NORTHERN UTAH. THE
BULK OF THE CONVECTIVE ACTIVITY IS CURRENTLY LOCATED ALONG THE SPINE
OF UTAH AND EASTERN VALLEYS...WHILE MORE ISOLATED COVERAGE EXISTS
ACROSS PORTIONS OF WEST-CENTRAL UTAH. A MORE STABLE AIRMASS BEHIND
THE DISTURBANCE HAS LARGELY INHIBITED CONVECTION ACROSS SOUTHWEST
UTAH BEHIND THE WAVE.

EXPECT SHOWERS TO GRADUALLY WANE FOR THE EVENING HOURS AS THE
DISTURBANCE EXITS THE AREA. A MORE WESTERLY FLOW ACROSS NORTHERN
UTAH TOMORROW WILL BRING DRIER AIR BACK TO THE NORTHWESTERN PORTIONS
OF THE FORECAST AREA...ALTHOUGH SOME SHOWERS ARE STILL EXPECTED
TOMORROW ACROSS THE SPINE OF UTAH.

MODELS CONTINUE TO INDICATE A SHORTWAVE DISTURBANCE LIFTING NORTH
THROUGH UTAH TUESDAY EVENING INTO WEDNESDAY. THIS WILL BE
ACCOMPANIED BY A MOISTURE SURGE...AND THE LIFT ASSOCIATED WITH THIS
WAVE WILL LEAD TO MORE WIDESPREAD PRECIPITATION. THERE IS STILL A
BIT OF SPREAD BETWEEN MODELS REGARDING THE TIMING AND EXACT TRACK OF
THIS WAVE...MOSTLY IMPACTING HOW MUCH PRECIPITATION WILL OCCUR OVER
NORTHWEST UTAH. HOWEVER...ENOUGH CONFIDENCE EXISTS TO CONTINUE
BOOSTING POPS FOR THIS TIMEFRAME. WITH THE EXPECTED PRECIPITATION
AND SOUTHERLY FLOW BECOMING MORE ESTABLISHED OVER THE AREA...EXPECT
MUCH OF THE SMOKE TO FINALLY CLEAR OUT.

A SHORTWAVE TROUGH IS EXPECTED TO REBOUND FOR THURSDAY BEHIND THE
DEPARTING WAVE...FOLLOWED BY SOUTHWEST FLOW FOR LATE WEEK. THIS WILL
BRING A GRADUAL DRYING TREND TO THE AREA THROUGH THE END OF THE
WEEK.

&&

.AVIATION...VFR CONDITIONS ARE EXPECTED AT THE KSLC TERMINAL THROUGH
THE TAF PERIOD...THOUGH SMOKE WILL PERSIST OVER THE AREA.  NORTHERLY
LAKE BREEZE WILL SWITCH TO A SOUTHEAST DRAINAGE WIND AROUND 03Z.
THERE IS A CHANCE THAT SWITCH MAY BE DELAYED AN HOUR OR TWO GIVEN
NORTHWEST FLOW ALOFT.

&&

.FIRE WEATHER...HIGH PRESSURE WILL RESULT IN A WARMING TREND OVER
THE DISTRICT THROUGH MONDAY. LINGERING MOISTURE WILL ALLOW FOR
ISOLATED SHOWERS AND THUNDERSTORMS OVER THE HIGHER TERRAIN THROUGH
THIS EVENING. WITH A BIT OF DRIER AIR MOVING IN TOMORROW...COVERAGE
OF CONVECTION TOMORROW WILL BE SLIGHTLY LESS THAN TODAY. MONSOONAL
MOISTURE WILL SPREAD BACK INTO THE AREA BEGINNING
TUESDAY...INCREASING COVERAGE OF CONVECTION...AND ALLOWING FOR A
BETTER CHANCE OF WETTING RAINS.

&&

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

&&

$$

CHENG/BARJENBRUCH/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)



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.