Area Forecast Discussion
Issued by NWS St. Louis, MO

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FXUS63 KLSX 222314

614 PM CDT Mon Sep 22 2014

.SHORT TERM: (Through Friday)
Issued at 252 PM CDT Mon Sep 22 2014

High pressure will result in excellent radiational cooling
tonight and have forecast temperatures in the middle to upper 40s.
The upper low now over Wyoming will stretch a trof across the
Plains through midweek with convection staying northwest of the
CWA due to dry and stable atmosphere overhead. The upper level
trof will gradually weaken or even retrograde with time keeping a
dry forecast intact. A gradual warming trend is expected the
remainder of the work week.


.LONG TERM: (Saturday Through Next Monday)
Issued at 252 PM CDT Mon Sep 22 2014

Much of the CONUS will be covered by a very large upper level ridge
by next weekend thanks to the amplification/deepening of an
approaching upper level trof along the west coast late in the work
week. The suite of medium range models and their respective
ensembles are in relatively good agreement with this upper level
pattern and therefore confidence is higher than normal in dry and
tranquil conditions and slightly above normal temperatures in the
extended forecast.



.AVIATION:  (For the 00z TAFs through 00z Tuesday Evening)
Issued at 608 PM CDT Mon Sep 22 2014

Specifics for KSTL, KCOU, KUIN, KCPS: Expect VFR conditions with
light winds due to a ridge of high pressure overhead.

Specifics for KSUS: Expect VFR conditions with light winds due to
a ridge of high pressure overhead. If steam fog develops along
the Missouri River, then the very light northeast/east winds which
are forecast overnight might push some of it onto the airport
grounds at KSUS. Confidence is too low at this time to include in
the TAF.





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