Area Forecast Discussion
Issued by NWS Lake Charles, LA

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FXUS64 KLCH 312328
AFDLCH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
628 PM CDT FRI JUL 31 2015

.DISCUSSION...
01/00Z TAF ISSUANCE.

&&

.AVIATION...
A DRIER AIRMASS HAS FILTERED INTO THE REGION ON MDT NELY WINDS AS
HIGH PRES OVER MO BUILDS SOUTH. SKIES ARE MOSTLY CLR WITH JUST A
FEW CIRRUS OVER THE REGION. EXPECT VFR TO PREVAIL THROUGH THE
PERIOD WITH DEEP NELY FLOW PERSISTING. NE WINDS WILL LIGHTEN THIS
EVENING...THEN INCREASE TO AROUND 10 KT AGAIN SATURDAY MORNING. 24

&&

.PREV DISCUSSION... /ISSUED 352 PM CDT FRI JUL 31 2015/

DISCUSSION...
A WEAK SURFACE FRONTAL BOUNDARY HAS MOVED THROUGH THE FORECAST
AREA...WITH HIGH PRESSURE FROM THE MIDWEST BUILDING IN. THE RESULT
HAS BEEN A DRIER AIR MASS...WITH MUCH LOWER DEW POINTS AND
HUMIDITY VALUES. HEAT INDEX READINGS THIS AFTERNOON RANGE FROM 95F
TO 100F INSTEAD OF THE 109F TO 114F OF YESTERDAY. ALSO...ANY
SHOWER ACTIVITY HAS BEEN CONFINED TO THE OUTER COASTAL WATERS
WHERE THE DEEPER MOISTURE EXISTS.

SURFACE HIGH PRESSURE AND THE DRIER AIR MASS WILL PREVAIL INTO
SATURDAY. MAINLY SUNNY SKIES...LOWER HUMIDITY VALUES AND NO
SIGNIFICANT RAIN CHANCE FOR THE FIRST HALF OF THE WEEKEND. HEAT
INDEX READINGS AGAIN ON SATURDAY AFTERNOON WILL BE IN THE 90S.

HIGH PRESSURE OVER THE MID WEST GRADUALLY SLIDES OFF TO THE
EAST...WITH THE OLD FRONTAL BOUNDARY GRADUALLY LIFTING NORTH WITH
THE RETURN OF SOUTHERLY WINDS ON SUNDAY.

INITIAL MOISTURE WILL BE RATHER SHALLOW...WITH MAYBE A FEW STORMS
OVER LOWER ACADIANA SUNDAY AFTERNOON. THE SOUTHERLY WINDS WILL
PREVAIL...HOWEVER...INTO NEXT WEEK WITH MOISTURE VALUES AND
HUMIDITY CONTINUING TO INCREASE. THE UPPER LEVEL RIDGE WILL BE
CENTERED OVER THE SOUTHWEST U.S. FOR THE FIRST HALF OF THE
WEEK...AND THIS SHOULD ALLOW FOR A FEW SHOWERS AND THUNDERSTORMS
TO DEVELOP DURING DAYTIME HEATING. AS THE END OF THE WEEK
NEARS...INTO NEXT WEEKEND...THE RIDGE BECOMES CENTERED CLOSER TO
THE FORECAST AREA...WHICH WOULD REDUCE RAIN CHANCES AND AGAIN
BRING ON VERY HOT CONDITIONS.

RUA

MARINE...
A WEAK SURFACE FRONTAL BOUNDARY HAS MOVED THROUGH THE COASTAL
WATERS. MAINLY LIGHT NORTHERLY FLOW IS THE RESULT. THE OFFSHORE
FLOW IS EXPECTED TO CONTINUE THROUGH SATURDAY. HIGH PRESSURE
RIDGING ACROSS FROM THE EAST WILL HELP LIFT THE BOUNDARY BACK TO
THE NORTH ON SUNDAY. A RETURN TO MAINLY LIGHT SOUTHERLY WINDS WILL
THEN OCCUR AND CONTINUE THROUGH NEXT WEEK.

RUA

&&

.PRELIMINARY POINT TEMPS/POPS...
AEX  94  70  94  69 /   0   0   0   0
LCH  96  72  95  72 /  10  10   0   0
LFT  95  72  95  74 /  10  10  10   0
BPT  98  74  97  73 /  10  10   0   0

&&

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

$$


AVIATION...24



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