Area Forecast Discussion
Issued by NWS Salt Lake City, UT

Home | 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 071124
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
424 AM MST SUN FEB 7 2016

.SYNOPSIS...HIGH PRESSURE WILL REMAIN THE DOMINANT WEATHER
FEATURE ACROSS THE REGION THROUGH THE UPCOMING WEEK.

&&

.SHORT TERM (THROUGH 00Z THURSDAY)...MID LEVEL RIDGING CENTERED
ALONG THE WEST COAST WILL GRADUALLY BUILD INLAND ACROSS THE
INTERIOR WEST THROUGH THE SHORT TERM PERIOD. STABLE AIRMASSES IN
PLACE ACROSS MOST NORTHERN AND CENTRAL VALLEYS COUPLED WITH
WARMING ALOFT ASSOCIATED WITH THE BUILDING RIDGE WILL ALLOW FOR
STRENGTHENING INVERSIONS DURING THIS PERIOD. WARMING WILL BE
CONSIDERABLE AT HIGHER ELEVATIONS AS WELL AS ACROSS THE FAR
SOUTH...WHILE MOST VALLEYS WILL STRUGGLE TO REALIZE MUCH IF ANY
WARMING DURING THIS TIME. HAVE GONE WELL BELOW GUIDANCE ACROSS THE
EASTERN VALLEYS...UINTA BASIN...WEST CENTRAL UT AND THE NORTHWEST
DESERTS WHERE STRATUS AND FOG WILL LIKELY INCREASE THROUGH
MIDWEEK. ALONG THE WASATCH FRONT MAINTAINED MAX TEMPS CLOSE TO
WHAT HAS BEEN OBSERVED OVER THE PAST COUPLE OF
AFTERNOONS...HOWEVER IF FOG/STRATUS DEVELOPS MAY NEED TO LOWER
THESE VALUES WITH SUBSEQUENT FORECASTS.

.LONG TERM (AFTER 00Z THURSDAY)...TRANQUIL WEATHER PATTERN
THROUGH THE EARLY PORTION OF THE EXTENDED PERIOD WITH VALLEY
INVERSION AND MILD TEMPERATURES IN THE MOUNTAINS. THE RIDGE IS
EXPECTED TO BREAK DOWN SOME OVER THE WEEKEND...MORE SO BY THE EC
THAN THE GFS. HAVE LEANED TOWARD THE EC SINCE THE CANADIAN ALSO
SUPPORTS THIS IDEA. HAVE BROUGHT POPS UP TOWARDS CLIMO BY SUNDAY
ACROSS THE NORTHERN HALF OF THE CWA AS THE EC SHOWS A TIGHTENING
OF THE 700 MB BAROCLINIC ZONE AS IT MOVES ACROSS NORTHERN UTAH
WITH A COOLING OF 6 DEGREES CELSIUS IN 12 HOURS WHICH IS NOT GREAT
BUT STILL COULD BRING SOME INSTABILITY.

PRIOR TO THIS DISTURBANCE THE TEMPERATURE FORECAST REMAINS THE
MOST CHALLENGING WITH MANY VALLEYS REMAINING RATHER CHILLY YET THE
MOS GUIDANCE HAS BEEN OVER GENEROUS IN WARMING. HAVE LEANED TOWARD
MORE OF A PERSISTENCE FORECAST WITH PATCHY VALLEY FOG AND
TEMPERATURES NOT CHANGING MUCH FROM DAY TO DAY.

&&

.AVIATION...VFR CONDITIONS ARE EXPECTED AT THE SLC TERMINAL INTO
THIS EVENING...HOWEVER THERE IS A 30 PERCENT CHANCE OF
VISIBILITIES DROPPING INTO THE HIGH END MVFR RANGE AT TIMES
THROUGH 16Z THIS MORNING. SOUTHEAST WINDS ARE EXPECTED TO RETURN
TO THE NORTHWEST ABOUT 18-19Z.

&&

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

$$

SEAMAN/STRUTHWOLF

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.