Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 242232
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
432 PM MDT MON AUG 24 2015

.SYNOPSIS...A RIDGE OF HIGH PRESSURE OVER THE REGION WILL PERSIST
THROUGH THE NIGHT. MOISTURE WILL SPREAD NORTHWARD ACROSS THE AREA
LATE TUESDAY AS AN UPPER LEVEL DISTURBANCE ROTATES ACROSS THE REGION.

&&

.DISCUSSION...A RIDGE REMAINS CENTERED OVER UTAH THIS AFTERNOON.
DRIER AIR HAS SPREAD INTO WESTERN UTAH AND AS A RESULT CONVECTIVE
COVERAGE IS MORE LIMITED TODAY...REMAINING GENERALLY ISOLATED AND
MAINLY OVER THE MOUNTAINS AND IMMEDIATELY ADJACENT AREAS. WITH THE
ABSENCE OF ANY SIGNIFICANT FORCING...THE SHOWERS SHOULD DIMINISH
THIS EVENING.

THE RIDGE AXIS WILL SHIFT EAST TOMORROW...ALLOWING SOUTHERLY FLOW TO
SPREAD MOISTURE IN GREATER ABUNDANCE FROM ARIZONA. IN ADDITION TO
THE MOISTURE...A SHORTWAVE DISTURBANCE WILL ROTATE INTO
UTAH...PROVIDING THE FORCING TO RESULT IN MORE WIDESPREAD
PRECIPITATION OVER THE FORECAST AREA. AFTERNOON CONVECTION TOMORROW
WILL BE TIED TO THE HIGHER TERRAIN AND ALONG THE ARIZONA
BORDER...THEN INCREASE ACROSS SOUTHERN UTAH DURING THE EVENING
HOURS. PRECIPITATION WILL SPREAD INTO NORTHERN UTAH TOMORROW NIGHT
AND WEDNESDAY MORNING IN CONJUNCTION WITH THE TRACK OF SAID
DISTURBANCE. MOISTURE REMAINING IN PLACE WEDNESDAY WILL KEEP WET
WEATHER IN PLACE THROUGH WEDNESDAY AFTERNOON.

WHILE SHOWERS ARE EXPECTED TO BE WIDESPREAD AND LOCALLY HEAVY...THE
NIGHTTIME TIMING OF THE WAVE TRANSITING THE AREA ALONG WITH
SIGNIFICANT CLOUD COVER ACCOMPANYING THE SYSTEM SUGGESTS THAT THE
STRENGTH OF CONVECTIVE CELLS MAY BE LIMITED. AS SUCH...THERE IS NOT
MUCH CONFIDENCE FOR ANY HYDRO HEADLINES AT THIS TIME.

THE CLOUD COVER AND PRECIPITATION WILL BRING COOLER TEMPERATURES TO
MUCH OF THE AREA ON WEDNESDAY AFTER ABOVE NORMAL READINGS TODAY AND
TOMORROW. ALSO...THE SMOKE OVER THE AREA HAS BEEN GRADUALLY CLEARING
THE PAST COUPLE OF DAYS AND SHOULD MORE DEFINITIVELY CLEAR OUT
TOMORROW/WEDNESDAY WITH THE SOUTH FLOW AND PRECIPITATION.

A SHORTWAVE RIDGE IS EXPECTED TO BOUNCE BACK OVER THE AREA THURSDAY
BEHIND THE DEPARTING WAVE...FOLLOWED BY SOUTHWEST FLOW FOR THE
WEEKEND. TEMPERATURES WILL REBOUND OVER THE AREA WHILE DRIER AIR
GRADUALLY WORKS ITS WAY BACK INTO THE AREA UNDER THIS PATTERN.

&&

.FIRE WEATHER...HIGH PRESSURE CONTINUES TO REMAIN IN PLACE OVER THE
FIRE DISTRICT. A FEW SHOWERS HAVE DEVELOPED OVER THE HIGHER
TERRAIN...WHICH WILL CONTINUE INTO THE EARLY EVENING BEFORE
WEAKENING. SOUTHERLY FLOW WILL BRING MONSOONAL MOISTURE INTO THE
DISTRICT BEGINNING TOMORROW. CONVECTION WILL BE AIDED BY A WEATHER
DISTURBANCE MOVING NORTHWARD TUESDAY NIGHT AND WEDNESDAY. AREAS OF
WETTING RAIN ARE ANTICIPATED WITH THIS INCREASE IN MOISTURE AND
INSTABILITY. A DRYING TREND WILL BEGIN THURSDAY AND LAST THROUGH THE
WEEKEND WITH GUSTY SOUTHERLY WINDS POSSIBLE.

&&

.AVIATION...WINDS AT THE SLC TERMINAL ARE EXPECTED TO SWITCH BACK TO
THE SOUTHEAST BETWEEN 03Z AND 05Z. VFR CONDITIONS WILL PREVAIL
THROUGH THE TAF PERIOD...THOUGH CLOUD COVER AND CHANCE OF
PRECIPITATION WILL BEGIN TO INCREASE TUESDAY AFTERNOON AND EVENING
OUT AHEAD OF AN APPROACHING WAVE.

&&

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

$$

CHENG/TRAPHAGAN/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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