Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 120340
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
940 PM MDT THU SEP 11 2014

.SYNOPSIS...A TROUGH AND ASSOCIATED COLD AIR SLIDING DOWN THE
EAST SIDE OF THE CONTINENTAL DIVIDE WILL RESULT IN COLD
TEMPERATURES AND LOCALIZED GAP WINDS FRIDAY MORNING OVER THE
NORTHERN PORTION OF THE FORECAST AREA. A WARM DRY RIDGE WILL
DEVELOP OVER THE GREAT BASIN THROUGH THE WEEKEND AND EARLY NEXT
WEEK.

&&

.DISCUSSION...THE UPPER TROUGH OVER THE NORTHERN ROCKIES AND NOW
CROSSING WYOMING WILL CONTINUE TO BRING A PUSH OF COLD AIR TO UTAH
TONIGHT. A NORTHERLY GRADIENT HAS BEEN IN PLACE OVER NORTHERN UTAH
FOR MUCH OF THE DAY WITH EASTERLIES PUSHING ACROSS SOUTHWEST WYOMING
AT THIS TIME. AFTERNOON MAXES TODAY WERE WELL BELOW NORMAL ACROSS
MUCH OF THE NORTHERN HALF OF THE FORECAST AREA AS A RESULT.
OVERNIGHT MINS WILL BE QUITE COLD IN THIS SAME AREA...AND
TEMPERATURES HAVE ALREADY PLUMMETED INTO THE 40S IN PORTIONS OF THE
CACHE VALLEY. FROST IS POSSIBLE THERE AS WELL AS IN THE WASATCH BACK.

AS THE EASTERLIES CONTINUE TO PUSH INTO NORTHEAST UTAH
OVERNIGHT...EXPECT CANYON WINDS TO INCREASE ALONG THE WASATCH FRONT.
ALTHOUGH LOCALIZED...THESE WINDS COULD GUST INTO THE 40 MPH RANGE.
THE GRADIENT SHOULD RELAX BY MIDDAY TOMORROW ALLOWING THE WIND TO
TAPER OFF. EXPECT THE AIRMASS TO START WARMING BACK UP TOMORROW
AFTERNOON WITH TEMPERATURES BACK TO NORMAL OR ABOVE FOR THE WEEKEND.

MADE MINOR UPDATES MAINLY TO ADJUST EVENING WINDS AND TO ADD GUST
WORDING TO ZONES.

&&

.AVIATION...NORTHERLY WINDS WILL GRADUALLY DIMINISH OVERNIGHT AT THE
SLC TERMINAL BUT ARE NOT EXPECTED TO SWITCH BACK TO SOUTHEASTERLY
UNTIL 09-10Z. THIS SAID...A 30 PERCENT CHANCE EXISTS THAT WINDS WILL
PRIMARILY BE LIGHT AND VARIABLE AT THAT TIME. OUTSIDE OF THE WINDS
OPERATIONAL WEATHER CONCERNS WILL REMAIN MINIMAL THROUGH THE VALID
TAF PERIOD.

&&


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

$$

CHENG

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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