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

000
FXUS65 KSLC 201645
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1045 AM MDT SUN APR 20 2014

.SYNOPSIS...A WEAK STORM SYSTEM WILL MOVE SLOWLY OUT OF THE
REGION LATE TODAY. A WARM SOUTHWEST FLOW WILL DEVELOP MONDAY
BRINGING UNSEASONABLY WARM TEMPERATURES TO THE REGION. A COLD
SPRING STORM WILL IMPACT THE AREA TUESDAY AND WEDNESDAY.


&&

.DISCUSSION...WEAK SURFACE COLD FRONT IS PUSHING SOUTH INTO
CENTRAL UTAH THIS MORNING. DRIER AIR AND LOCALLY BREEZY NORTHWEST
WINDS ARE OVERSPREADING NORTHWEST UTAH BEHIND THE FRONT. WITH A
LITTLE COOL ADVECTION BEHIND THE FRONT...EXPECT MAXIMUM
TEMPERATURES TO BE A FEW DEGREES BELOW YESTERDAY/S READINGS
ACROSS CENTRAL AND NORTHERN UTAH...ALTHOUGH TEMPERATURES WILL
STILL BE A BIT ABOVE NORMAL.

SOUTH AND EAST OF THE BOUNDARY...NAM INDICATES THAT MODEST SBCAPE
OF 100-250 J/KG AND WEAKLY NEGATIVE LIFTED INDEX VALUES WILL
DEVELOP TODAY. WITH SUFFICIENT MOISTURE STILL IN PLACE...EXPECT
SCATTERED MOUNTAIN AND ISOLATED VALLEY SHOWERS TO DEVELOP THIS
AFTERNOON. GIVEN THE INSTABILITY PROFILE ANTICIPATE A FEW WEAK
THUNDERSTORMS AS WELL. CONVECTION IS EXPECTED TO DISSIPATE QUICKLY
THIS EVENING AS INSTABILITY DIMINISHES.

TONIGHT SHORTWAVE RIDGING BUILDS QUICKLY INTO THE AREA AND FLOW
ALOFT BACKS SHARPLY. THIS SETS UP A PERIOD OF STRONG WARM
ADVECTION WHICH WILL LEAD TO AN UNSEASONABLY WARM DAY ON MONDAY.

UPDATED TO ADD GUSTY NORTHWEST WINDS BEHIND FRONT ACROSS NORTHWEST
UTAH AND TO ADJUST SKY COVER FOR CURRENT AND EXPECTED TRENDS.
ONLY MADE MINOR ADJUSTMENTS TO POPS TO EXPAND COVERAGE OF SLIGHT
CHANCE AREA A BIT IN SOUTHWEST UTAH GIVEN DEPICTIONS IN HRRR MODEL
RUNS THIS MORNING AND PRESENCE OF LINGERING INSTABILITY IN THIS
AREA.

&&

.AVIATION...THE SLC TERMINAL WILL SEE VFR CONDITIONS THROUGHOUT THE
DAY WITH SOME SCATTERED CLOUDS. NORTHWEST WINDS ARE EXPECTED TO
SHIFT TO THE SOUTHEAST AROUND 03-04Z.

&&

&&

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

$$

PUBLIC...GRAHAM
AVIATION...YOUNG

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.