Area Forecast Discussion
Issued by NWS Lake Charles, LA

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000
FXUS64 KLCH 281528
AFDLCH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1028 AM CDT FRI AUG 28 2015

.DISCUSSION...
FRESHENED UP FIRST PERIOD HOURLY GRIDS...BUT NO MAJOR CHANGES TO
THE FCST MADE THIS MORNING...AND THUS NO ZFP UPDATE REQUIRED.
UPDATED PFM ALREADY SENT.

13

&&

.PREV DISCUSSION... /ISSUED 435 AM CDT FRI AUG 28 2015/

DISCUSSION...
SFC ANALYSIS SHOWS HIGH PRESSURE REMAINING ENTRENCHED FROM THE
GREAT LAKES SWWD TO THE WRN GULF COAST STATES...WHILE A FRONTAL
BOUNDARY IS NOTED FROM LOW PRESSURE OVER NEBRASKA TO THE TX
PANHANDLE. WATER VAPOR IMAGERY SHOWS DEEP TROFFING OVER THE ERN
CONUS WHILE RIDGING IS IN PLACE FROM THE DESERT SW TO THE MIDDLE
MISSISSIPPI VALLEY. REGIONAL 00Z SOUNDINGS SHOWED A DRY AIRMASS
PERSISTING OVER THE REGION (MEAN RH VALUES AROUND 30 PERCENT/PWAT
VALUES AROUND AN INCH)...AND THIS DRY AIR HAS LED TO A VERY
PLEASANT MORNING WITH ALL AREA OB SITES SEEING TEMPS IN THE 60S
ATTM. SATELLITE IMAGERY SHOWS A LITTLE CIRRUS SPILLING OUT AHEAD
OF ANOTHER STRONG SHORTWAVE CROSSING THE PLAINS. LOCAL 88DS ARE
PPINE.

A COUPLE MORE POP-FREE DAYS ARE ON TAP AS OUR DRY AIRMASS
LINGERS...ALTHOUGH DEWPOINTS/LOW-LEVEL MOISTURE WILL BE ON THE
RISE BEGINNING TODAY AS AN ONSHORE FLOW DEVELOPS ON THE BACKSIDE
OF PASSING HIGH PRESSURE. SLIM RAIN CHANCES THEN RETURN BY LATE
SUNDAY INTO MONDAY AS THE FORECAST AREA GETS SQUEEZED BETWEEN A
CUTOFF LOW DRIFTING WWD ALONG THE GULF COAST AND WEAK
DISTURBANCE/PLAINS STATES COOL FRONT PUSHING SEWD. RAIN CHANCES
LOOK TO INCREASE DURING THE EARLY PART OF NEXT WEEK AS THE LOW
MEANDERS OVER THE WRN GULF REGION AND MID/UPPER-LEVEL MOISTURE
INCREASES.

MARINE...
NO FLAGS ARE ANTICIPATED ON THE COASTAL WATERS THROUGH THE PERIOD.

&&

.PRELIMINARY POINT TEMPS/POPS...
AEX  92  65  93  68 /   0   0  10  10
LCH  90  70  91  72 /   0   0   0  10
LFT  90  69  92  71 /   0   0  10  10
BPT  91  69  90  73 /   0   0  10  10

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...NONE.
TX...NONE.
GM...NONE.

&&

$$



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