000
FXUS65 KSLC 171507
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
907 AM MDT FRI MAY 17 2013

.SYNOPSIS...A COOL MOIST UPPER TROUGH WILL CROSS THE GREAT BASIN
TODAY THROUGH EARLY SATURDAY. A COLDER SYSTEM WILL CROSS THE REGION
SATURDAY NIGHT AND SUNDAY. HIGH PRESSURE WILL RETURN FOR THE FIRST
PART OF NEXT WEEK.

&&

.DISCUSSION...THE UPSTREAM UPPER TROUGH CONTINUES TO PUSH EAST
INTO NEVADA THIS MORNING. THE ASSOCIATED COLD FRONT STALLED
ACROSS CENTRAL UTAH IS SLOWLY BECOMING MORE SOUTHWEST-NORTHEAST
ORIENTED AS THE TROUGH BEARS DOWN ON THE COUNTY WARNING AREA.
THERE IS A PERSISTENT SOUTHWEST TO NORTHEAST BAND OF PRECIPITATION
OVER NORTHWEST UTAH INDICATED ON KMTX RADAR. THIS BAND CONTINUES
TO INCH SOUTHEAST AS IT EXPANDS IN AREAL COVERAGE AND IS EXPECTED
TO ENCOMPASS MUCH OF THE NORTH BY THIS AFTERNOON. RADAR SHOWS GOOD
STRUCTURE WITH THIS SYSTEM WHICH COULD LEAD TO THUNDERSTORM
DEVELOPMENT THIS AFTERNOON AS IT PRESSES EASTWARD. EXPECT THESE
SHOWERS TO MOVE INTO THE WASATCH FRONT AROUND MID AFTERNOON. EVEN
THOUGH THE FRONTAL BOUNDARY IS EXPECTED TO SHIFT BACK
NORTHWESTWARD IT IS NOT EXPECTED IT TO MAKE IT BACK NORTH OF UTAH
COUNTY. THE SOUTHEAST PORTION OF THE STATE WILL REMAIN DRY AND
BREEZY TODAY AHEAD OF THE COLD FRONT. THE TROUGH WILL CONTINUE
EAST AND PUSH THE FRONT THROUGH THE STATE BY SATURDAY AFTERNOON.

A TRAILING SHORT WAVE TROUGH APPARENT ON SATELLITE IS FORECAST TO
BRING SLIGHTLY COLDER AIR AND ANOTHER ROUND OF PRECIPITATION TO
THE NORTH SUNDAY MORNING. SNOW LEVELS LOWERING TO NEAR 7000 FEET
FOR A TIME IS NOT OUT OF THE QUESTION. FORECAST IN GOOD SHAPE AT
THIS TIME WITH NO UPDATE ANTICIPATED.

&&

.AVIATION...NORTHERLY WINDS ARE EXPECTED TO CONTINUE AT THE SLC
TERMINAL THROUGHOUT THE MORNING AND THROUGH THE EARLY EVENING. WINDS
WILL LIKELY REMAIN BELOW 8 KTS THROUGH 17-19Z. ANTICIPATE SHOWERS IN
THE VICINITY OF THE TERMINAL EARLY THIS AFTERNOON THROUGH TONIGHT.
WINDS WILL LIKELY BE GUSTY AND ERRATIC NEAR ANY SHOWERS.

&&

.FIRE WEATHER...A COLD FRONT STALLED ACROSS THE AREA FROM ABOUT
DELTA TO EVANSTON WYOMING WILL BE THE DIVIDING LINE BETWEEN HIGHER
RH AND SCATTERED SHOWERS TO THE NORTHWEST AND LOW RH AND BREEZY
SOUTHWEST WINDS TO THE SOUTHEAST. FUELS REMAIN BELOW CRITICAL LEVELS
OVER THE AREA...SO NO WARNINGS WILL BE ISSUED.

A SERIES OF DISTURBANCES WILL CONTINUE TO BRING COOLER CONDITIONS
AND PERIODS OF SHOWERS AND EVEN A FEW THUNDERSTORMS FOR MUCH OF THE
WEEKEND ACROSS MAINLY CENTRAL AND NORTHERN UTAH...ALTHOUGH ISOLATED
VALLEY SHOWERS AND SCATTERED SHOWERS ARE POSSIBLE ACROSS THE SOUTH.
A SIGNIFICANT WARMUP IS FORECAST NEXT TUESDAY...AND THE ABOVE NORMAL
TEMPERATURES SHOULD CONTINUE THROUGH MUCH OF THE REMAINDER OF THE
WEEK.

&&

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

&&

$$

PUBLIC.........YOUNG
FIRE WEATHER...STRUTHWOLF
AVIATION.......VERZELLA

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)