Area Forecast Discussion
Issued by NWS St. Louis, MO

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000
FXUS63 KLSX 291731
AFDLSX

AREA FORECAST DISCUSSION...UPDATED AVIATION
NATIONAL WEATHER SERVICE ST LOUIS MO
1231 PM CDT Mon Sep 29 2014

.UPDATE:
Issued at 1058 AM CDT Mon Sep 29 2014

Few clouds are expected the rest of the day resulting in sunny
skies. Latest observed aircraft soundings from KSTL shows mixing
up to around 800mb which supports the the going forecast highs in
the mid 80s. Winds will remain light as surface ridge approaches
the area from the west.

Britt

&&

.SHORT TERM:  (Through Late This Afternoon)
Issued at 223 AM CDT Mon Sep 29 2014

Another beautiful fall day in store for the area as temperatures
are once again expected to reach the middle 80s with plenty of
sunshine.

CVKING

.LONG TERM:  (Tonight through Sunday)
Issued at 223 AM CDT Mon Sep 29 2014

Western CONUS longwave trof will move east into the Midwest by
midweek with a good chance of rain in the offing for the entire
CWA beginning as early as Wednesday afternoon across central
Missouri and exiting southern Illinois by early Friday morning.

Model guidance in pretty good agreement that best chances of
precipitation will be Wednesday night through Thursday night. A
strengthening low level jet will transport quality moisture into
the region Wednesday night and precipitation should become
widespread across the northwestern half of the CWA where a series
of weak disturbances will eject northeast out of the base of the
longwave trof. By Thursday the cold front will be knocking on our
doorstep and this, along with the main trof axis will contribute
to additional showers and thunderstorms through early Friday
morning.

Cooler air expected in the wake of the front, with below normal
temperatures forecast for Friday and Saturday, before returning to
normal on Sunday.

CVKING

&&

.AVIATION:  (For the 18z TAFs through 18z Tuesday Afternoon)
Issued at 1230 PM CDT Mon Sep 29 2014

Dry and VFR conditions are expected through the TAF period. A
surface ridge will move through the region today and early tonight
keeping winds light and variable before they turn out of the east-
southeast on Tuesday morning.

Specifics for KSTL: Dry and VFR conditions are expected over the
next 30 hours with light winds.

Britt

&&

.LSX WATCHES/WARNINGS/ADVISORIES:
MO...NONE.
IL...NONE.
&&

$$

WFO LSX





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