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000
FXUS64 KSHV 120310
AFDSHV

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
910 PM CST WED DEC 11 2013

.DISCUSSION...
A FEW UPDATES FOR THE OVERNIGHT FORECAST ARE FORTHCOMING THIS
EVENING. IR IMAGERY SHOWING HIGH THIN CIRRUS CONTINUES TO
OVERSPREAD THE REGION THIS EVENING. SFC ANALYSIS SHOWS A STRONG
RIDGE OF HIGH PRESSURE ACROSS THE UPPER RED RIVER BASIN EXTENDING
NORTHEAST INTO THE OHIO VALLEY. SFC LOW PRESSURE ACROSS THE
SOUTHWEST GULF OF MEXICO IS RESULTING IN A SLIGHTLY STRONGER
PRESSURE GRADIENT ACROSS OUR REGION COMPARED TO 24 HOURS AGO. THIS
HAS RESULTED IN A PERSISTENT NORTH/NORTHEAST WIND THIS EVENING
WHICH COMBINED WITH THE HIGH CIRRUS HAS HELD TEMPERATURES UP A
BIT. COMPARED TO 24 HOURS AGO...TEMPERATURES WERE RUNNING SOME 6
TO 8 DEGREES WARMER COMPARED TO THIS TIME LAST NIGHT. ALSO...
TEMPERATURE/DEWPOINT SPREADS ARE MUCH HIGHER THIS EVENING COMPARED
TO LAST NIGHT AND AS A RESULT...DO NOT THINK WE`RE GOING TO NEED
TO WORRY ABOUT ANY FREEZING FOG OVERNIGHT.

THE THIN CIRRUS AND LIGHT NORTH/NORTHEAST WINDS WILL LIKELY HOLD
TEMPERATURES UP JUST A BIT AND AS A RESULT...HAVE WARMED OVERNIGHT
TEMPS A FEW DEGREES ACROSS MOST PLACES. STILL EXPECTING A FREEZE
AREAWIDE TONIGHT BUT IT WILL BE CLOSE ACROSS OUR SOUTHERN MOST
ZONES WHERE THE CIRRUS SHOULD BE A LITTLE THICKER.

ALSO ADJUSTED DEWPOINT/SKY GRIDS UPWARD TO MATCH CURRENT
TRENDS...OTHERWISE NO OTHER CHANGES WERE NECESSARY OVERNIGHT.

13

&&

.AVIATION...
VFR CONDITIONS WITH MAINLY A SCT TO BKN CIRRUS DECK WILL PREVAIL
THROUGH MOST OF THE 06Z TAF PERIOD. NLY WINDS 5-10 KTS SHOULD KEEP
THE LOW LVLS MIXED ENOUGH TO PREVENT FOG DEVELOPMENT EARLY THURSDAY
MORNING. SFC HIGH TO QUICKLY SHIFT EWD THROUGH THE PERIOD RESULTING
IN WINDS VEERING TO SELY AFTER 13/00Z.

/09/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  29  50  32  51  41 /  10  10  10  70  70
MLU  29  50  29  53  44 /  10  10  10  50  80
DEQ  24  46  27  48  36 /  10  10  20  70  60
TXK  27  47  31  48  40 /  10  10  10  70  60
ELD  24  47  29  49  39 /  10  10  10  70  70
TYR  29  49  35  47  39 /  10  10  10  70  50
GGG  29  50  33  49  38 /  10  10  10  70  60
LFK  32  51  36  55  45 /  10  10  10  70  70

&&

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

$$

13/09