Area Forecast Discussion
Issued by NWS St. Louis, MO

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FXUS63 KLSX 291559

1059 AM CDT Mon Sep 29 2014

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.



.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


.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

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



.AVIATION:  (For the 12z TAFs through 12z Tuesday Morning)
Issued at 654 AM CDT Mon Sep 29 2014

Just like the last few mornings, MVFR to IFR fog in river valleys
will quickly dissipate after sunrise. Expect VFR conditions for
the rest of the day.

Specifics for KSTL: VFR conditions with light winds are expected
throughout the TAF period.





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