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 101557
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
957 AM MDT WED SEP 10 2014

.SYNOPSIS...A DRY AND STABLE NORTHWEST FLOW ALOFT WILL DEVELOP
ACROSS THE GREAT BASIN FOR THE REMAINDER OF THE WEEK. HIGH
PRESSURE WILL STRENGTHEN ACROSS THE REGION DURING THE UPCOMING
WEEKEND.

&&

.DISCUSSION...PACIFIC RIDGING CURRENTLY AMPLIFYING ALONG THE
COAST IN RESPONSE TO CONTINUED DOWNSTREAM PROGRESSION OF THE SHORT
WAVE TROUGH THAT MOVED THROUGH EASTERN GREAT BASIN YESTERDAY.
NORTHWEST FLOW ALOFT HAS ENABLED A SIGNIFICANTLY DRYER AIRMASS TO
ADVECT IN...WITH DEEP MOISTURE NOW PINNED TO FAR SOUTHERN ARIZONA.
REMNANT LOW LEVEL MOISTURE COUPLED WITH SIGNIFICANT RADIATIONAL
COOLING OVERNIGHT HAS ALLOWED FOR PATCHY DENSE FOG TO FORM IN SOME
OF THE MOUNTAIN VALLEYS...ESPECIALLY THE HEBER VALLEY...AND
UPDATED GRIDS TO REFLECT THIS AS THE ONLY UPDATE THIS MORNING.
THIS FOG WILL ERODE OVER THE NEXT HOUR OR SO ALLOWING CLEAR SKIES
TO DOMINATE ALL AREAS TODAY.

DEEP UPPER LOW DESCENDING DOWN THE BACK SIDE OF THE AFOREMENTIONED
RIDGE CURRENTLY CENTERED OVER SOUTHERN ALBERTA AND WILL TRACK INTO
CENTRAL MONTANA OVER THE NEXT 24 HOURS. THOUGH FURTHER EVOLUTION WILL
TAKE THIS TROUGH GENERALLY ALONG AND EAST OF THE DIVIDE INTO
CO...SOUTHWESTERN WYOMING AND NORTHEASTERN UTAH WILL SEE A
SHALLOW BACKDOOR COLD FRONT SURGE IN FROM THE NORTHEAST THURSDAY
NIGHT. BULK OF COLD ADVECTION FROM THIS FRONT WILL OCCUR BELOW H7
PER BUFR SOUNDINGS SUGGESTING POTENTIAL FOR SOME GUSTY CANYON
WINDS AND SIGNIFICANTLY COOLER TEMPS THOSE AREAS FRIDAY MORNING
...MID TO UPPER 20S BEAR RIVER VALLEY AND POINTS EAST WITH MID
30S LOWS IN THE CACHE VALLEY/WASATCH BACK.

SENSIBLE WEATHER THEREAFTER THROUGH THE WEEKEND WILL REMAIN QUITE
TRANQUIL PER GLOBAL GUIDANCE...THIS AS RIDGING AMPLIFIES OVER THE
EASTERN GREAT BASIN THROUGH THAT TIME. AFTER A RATHER COOL DAY
ACROSS THE NORTH FRIDAY TEMPERATURES WILL REBOUND NEAR TO ABOVE
CLIMO HEADING INTO EARLY NEXT WEEK. NO POTENTIAL FOR PRECIP TO
NOTE.

&&

.AVIATION...WINDS AT THE SLC TERMINAL ARE EXPECTED TO SWITCH TO THE
NORTHWEST BETWEEN 17Z AND 19Z. VFR CONDITIONS WILL PREVAIL UNDER
MOSTLY CLEAR SKIES FOR THE TAF PERIOD.


&&

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

$$

MERRILL/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)



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