FXUS64 KSHV 262158
AFDSHV

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
358 PM CST SAT DEC 26 2009

.DISCUSSION...
SURFACE CHART LOOKS LIKE A LOW LEVEL MB HEIGHT WITH THE SIZE OF
THIS SYSTEM OVER THE COUNTRY. THE COLD AIR ADVECTION IS FILTERING
IN OVER THE WEST WITH TYLER HOLDING 50 THE LAST FEW HOURS. ALSO
SOME CLOUDINESS NOTED OVER THE SOUTHERN TIER WILL SWING IN
OVERNIGHT. ANOTHER CHILLY NIGHT ON TAP WITH DEW POINTS STILL QUITE
DRY IN LIGHT OF SW FLOW ON THE SURFACE TODAY. A BRIEF WARM UP TO
NEAR NORMAL FOR EVERYBODY ELSE TODAY. THIS NEXT SPOKE AROUND THE
UPPER LOW OVER THE GREAT LAKES WILL KEEP THE BIG CHILL GOING.
ESPECIALLY CONSIDERING THE SNOW PACK TO THE NORTHWEST WITH FRESH
WIND DRIVING INTO THE AREA. LOOKS MOSTLY SUNNY BUT COLD TOMORROW AS
WINDS CONTINUE NW WITH HIGH PRESSURE BUILDING INTO OVER THE NEXT
DAY OR SO.

SOUTHERN STREAM SYSTEM STILL LOOKS TO BRING PRECIP IN ON TUESDAY.
TIMING MAY BE SLOW IN THE MODELS WITH UP GLIDE EVENT AND THIS
BRING TEMPS INTO PLAY AS MORNING TIME FRAME WOULD MEAN SLEET FROM
EVAPORATE COOLING OR SOME FREEZING RAIN IF IT IS AROUND
DAYBREAK. WILL HAVE TO MONITOR CLOSELY FOR TIMING...BUT FOR NOW
WILL INTRODUCE SLEET OR ICE PELLETS AS DRY AIR ALOFT WILL HAVE
VIRGA GOING AND WORKING DOWN. HPC QPF REMAINS LIGHT FOR ONSET OVER
NE TX...AGAIN TIMING IS EVERYTHING. OTHERWISE...LITTLE CHANGE TO
EXTENDED PORTION OF THE FORECAST AS THIS UPPER SYSTEM WILL BE
FOLLOW BY ANOTHER ARCTIC CHILL FOR THE WEEKEND...A MOISTURE
STARVED AIR MASS FROM CANADA FOR THE MOST PART. CERTAINLY WILL
KEEP AN EYE ON THE SOUTHERN STREAM IN THE COMING WEEKS.

&&

.AVIATION...
VFR SKC EXPECTED AREAWIDE NEXT SEVERAL HOURS WITH ONLY HIGH CLOUDS 
SKIRTING AREAS NEAR LFK TERMINAL A WEAK COLD FRONT NORTH OF THE RED 
RIVER WILL SHIFT WINDS FROM SW TO W-NW WITH FROPA. WIND SPEEDS 
GENERALLY AT OR BELOW 10 KTS NEAR AND NORTH OF FRONT...WITH WINDS 
AROUND 5 KTS AFTER 06Z. LOW VFR CIGS OVER NORTHERN OK MAY TRANSLATE 
AS FAR SOUTH AS TXK SITE BY SUNDAY AFTN./VII/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  28  50  29  47  27 /  10   0  10  10  10 
MLU  29  51  28  47  27 /  10   0  10  10  10 
DEQ  24  44  22  46  24 /   0   0  10   0  10 
TXK  29  46  28  46  27 /   0   0  10   0  10 
ELD  28  48  26  47  23 /   0   0  10   0  10 
TYR  29  49  29  46  31 /  10   0  10   0  10 
GGG  27  50  26  47  28 /  10   0  10  10  10 
LFK  30  55  28  47  32 /  10   0  10  10  10 

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...NONE.
LA...NONE.
OK...NONE.
TX...NONE.
&&

$$

24/07