FXUS63 KLSX 101055
AFDLSX

AREA FORECAST DISCUSSION...UPDATED AVIATION
NATIONAL WEATHER SERVICE ST LOUIS MO
455 AM CST THU DEC 10 2009

.DISCUSSION...
/332 AM CST THU DEC 10 2009/

FCST FOCUS WILL BE TEMPS THE NEXT THREE DAYS THEN POPS ON SAT NGT. 

TEMPS WILL BE SLOW TO WARM UNTIL THE SFC MOVES OFF TO THE E LATE
IN THE DAY FRI. TEMPS SHUD REMAIN STEADY FRI NGT AFTER REACHING
THE MIN BY MIDNIGHT SAT. HAVE TRENDED FCST TWD THE COOLER MOS TDA
AND FRI...BEFORE SLY FLOW HELPS TEMPS REACH TH 40S ON SAT. 

THE SLY FLOW WILL HELP DWPTS REBOUND WITH LLJ BRINGING ENUF MSTR
NWD BY SAT THAT THERE IS A SLGT CHC OF MEASURABLE PRECIP FRI NGT
INTO SAT. HAVE RATHER LOW POPS FOR NOW AS MDLS ARE BEGINNING TO
DEPICT MORE OF A DZ EVENT THAN ACTUAL RA. KEPT SILENT 20 POPS
GOING FOR SUN NGT AND INTO MON AS A WEAK CDFNT APPROACHES THE
REGION. MDLS ARE NOT VERY IMPRESSIVE FOR PRECIP CHCS. MDLS ALSO
DIFFER REGARDING TIMING...BUT TRENDED TWD A ECMWF/GEM BLEND. CAN
NOT JUSTIFY REMOVING SILENT POPS AND WILL LEAVE AS IS. 

LITTLE IF ANY CHANGES WERE MADE FOR TUESDAY AND BEYOND. 

TILLY

&&

.AVIATION...
/455 AM CST THU DEC 10 2009/

FOR THE 12Z TAFS...VFR CONDITIONS WILL PREVAIL THRU THE VALID TAF
PERIOD. WLY SFC WNDS WILL CONTAIN GUSTS TO AROUND 20KTS UNTIL SS
AND THEN LOOK FOR SFC WNDS TO BACK TO SWLY...DIMINISH...AND LOSE
THEIR GUSTS.

TES

&&

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

$$

WFO LSX