Area Forecast Discussion
Issued by NWS St. Louis, MO

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FXUS63 KLSX 201037
AFDLSX

AREA FORECAST DISCUSSION...UPDATED AVIATION
NATIONAL WEATHER SERVICE ST LOUIS MO
536 AM 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 12z TAFs through 12z Tuesday Morning)
Issued at 532 AM CDT Mon Oct 20 2014

Cold front will move through the TAF sites today, but no
precipitation is expected as the front passes. Surface winds will
veer from west to northwest behind the front.

Specifics for KSTL: Southwest winds this morning will gradaully
become northwesterely this afternoon behind a cold front. The
front will move through dry, with little cloud cover expected.

Browning

&&

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

$$

WFO LSX






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