Area Forecast Discussion
Issued by NWS St. Louis, MO

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FXUS63 KLSX 201731
AFDLSX

AREA FORECAST DISCUSSION...UPDATED AVIATION
NATIONAL WEATHER SERVICE ST LOUIS MO
1231 PM CDT Mon Oct 20 2014

.SHORT TERM:  (Through Late This Afternoon)
Issued at 301 AM CDT Mon Oct 20 2014

Scattered sprinkles and light rain showers developed across the
southern half of the LSX CWA overnight. Pcpn will gradually
diminish today due to increasingly drier air behind a low pressure
system which will continue moving from the Great Lakes into the
northeastern US.

Kanofsky

.LONG TERM:  (Tonight through Sunday)
Issued at 301 AM CDT Mon Oct 20 2014

Expect dry weather and seasonably mild temperatures to last
through at least the middle of the week due to the influence of a
highly amplified upper ridge across the central CONUS as well as a
surface ridge axis extending southwestward from Ontario through
the Great Lakes and into MO/IL. A low pressure system will cross
the Rockies and move into the plains towards the end of the week,
and some of the precipitation associated with this system might
clip the western CWA on Thursday. Most of the model runs over the
last few days were depicting a low pressure system which moved
southeastward from the Rockies into the southern plains and then
continued towards the Gulf of Mexico, but the 23/00z runs now
depict a very different solution with a shortwave moving through
the northern plains.

Kanofsky
&&

.AVIATION:  (For the 18z TAFs through 18z Tuesday Afternoon)
Issued at 1229 PM CDT Mon Oct 20 2014

Cold front has exited forecast area with surface ridge building
in. Skies to remain clear through the forecast period with
northwest winds becoming light and variable towards sunset. Then
by mid morning on Tuesday, winds to pickup from the north.

Specifics for KSTL:
Cold front has exited forecast area with surface ridge building
in. Skies to remain clear through the forecast period with
northwest winds becoming light and variable by 00z Tuesday. Then
by 15z Tuesday, winds to pickup from the north.

Byrd
&&

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

$$
WFO LSX





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