847
FXUS64 KLCH 241154
AFDLCH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
654 AM CDT FRI MAY 24 2013

.DISCUSSION...
24/12Z TAF ISSUANCE.

&&

.AVIATION...
LIFR CIGS AT KLCH AND IFR VISBYS AND OCCASIONAL CIGS AT KBPT THIS
MORNING...WITH A FEW LOW CLOUDS AT ERN SITES ALTHOUGH SLIGHTLY
LARGER TEMP/DEWPOINT DIFFERENCE IS LIMITING FOG DEVELOPMENT THERE.
OCCASIONAL MVFR CIGS THIS MORNING WILL LIFT BY MIDDAY WITH MOSTLY
LT VRBL WINDS EXPECTED. A WEAK FRONT DRIFTING NE TO SW ACRS THE
AREA WILL COMBINE WITH DAYTIME HEATING TO PRODUCE AT LEAST SOME
ISOLATED SHOWERS OR POSSIBLY A TS AND INCLUDED VCSH MENTION AT ALL
SITES THIS AFTN. OTHERWISE VFR CONDITIONS WILL PREVAIL INTO THE
EVENING. LINGERING LOW LVL MOISTURE COULD RESULT IN SOME LOW
CLOUDS POSSIBLY REDEVELOPING AT SRN SITES OVERNIGHT. 24

&&

.PREV DISCUSSION... /ISSUED 357 AM CDT FRI MAY 24 2013/

DISCUSSION...
MAINLY HIGH LEVEL CLOUDS AS A RESULT OF CONVECTIVE BLOW OFF FROM
EARLIER ACTIVITY IN TEXAS IS MOVING ACROSS THE FORECAST AREA. THIS
IS SOMEWHAT KEEPING THE FOG DEVELOPMENT IN CHECK...WITH JUST A FEW
SPOTS SO FAR REPORTING PATCHY FOG. WEAK SURFACE FRONTAL BOUNDARY
IS LOCATED ACROSS NORTHEAST LOUISIANA MOVING SLOWLY SOUTHWEST WITH
DRIER AIR NOTED BEHIND IT.

PATCHY FOG WILL BE THE MAIN CONCERN AS HIGH LEVEL CLOUDS THIN AND
AIR TEMPERATURES BEGIN TO REACH THE DEW POINT READING. A FEW SPOTS
MAY SEE VISIBILITIES REDUCED TO 1/4SM...MAINLY IN RURAL AREAS.
HOWEVER...A DENSE FOG ADVISORY IS NOT ANTICIPATED AT THIS TIME.

WEAK SURFACE FRONT WILL MOVE INTO THE FORECAST AREA LATER TODAY
THEN BISECT THE FORECAST AREA FROM NORTHWEST TO SOUTHEAST BY
SATURDAY MORNING BEFORE WASHING OUT. STILL DECENT MOISTURE HANGING
AROUND THE FORECAST AREA. FRONTAL BOUNDARY WILL LIKELY HELP SERVE
AS A FOCUS WITH DAYTIME HEATING FOR A FEW SHOWERS AND
THUNDERSTORMS DURING THE AFTERNOON HOURS. IF ACTIVITY AGAIN WAITS
TO DEVELOP LATE IN THE AFTERNOON...THERE SHOULD BE ENOUGH
INSTABILITY THAT A STORM MAY BECOME RATHER STRONG WITH HAIL AND
DOWN BURST WINDS POSSIBLE.

THE DRIER AIR WILL MAKE ITS WAY INTO MOST OF CENTRAL AND SOUTH
CENTRAL LOUISIANA...PROVIDING A COOLER NIGHT TONIGHT AND LESS
HUMID CONDITIONS ON SATURDAY FOR THOSE AREAS. ACROSS SOUTHEAST
TEXAS AND SOUTHWEST LOUISIANA...A LITTLE DEEPER MOISTURE AND HUMID
CONDITIONS MAY HANG AROUND INTO SATURDAY AS THE FRONT WASHES OUT.
WITH THIS...THERE WILL STILL BE A SLIGHT CHANCE OF SHOWERS OR
THUNDERSTORMS DURING THE AFTERNOON HOURS.

UPPER LEVEL RIDGING SHOULD KEEP CONDITIONS ON THE DRY SIDE FOR
SUNDAY INTO MEMORIAL DAY...WITH WARM DAYS AND SEASONABLE NIGHTS.

A RIDGE EXTENDING ACROSS THE SOUTHEAST U.S. WILL BUILD ACROSS THE
FORECAST AREA NEXT WEEK. A DEEP SOUTHEAST FLOW WILL DEVELOP
BRINGING BACK DECENT GULF MOISTURE AND WARM AND HUMID CONDITIONS.
DAYTIME HEATING WILL BRING ABOUT A SLIGHT CHANCE FOR A SHOWER OR
STORM EACH AFTERNOON FROM WEDNESDAY ONWARD.

RUA

MARINE...
A WEAK SURFACE BOUNDARY WILL MOVE TOWARD THE COASTAL WATERS TODAY
BEFORE STALLING NORTH OF THE COAST TONIGHT AND WASHING OUT ON
SATURDAY. THE LIGHT SOUTHEAST WINDS WILL BECOME BRIEFLY EASTERLY
FOR AREAS EAST OF CAMERON DUE TO THIS FEATURE.

WINDS WILL AGAIN BECOME FROM THE SOUTHEAST FOR THE ENTIRE AREA ON
SUNDAY AS HIGH PRESSURE BEGINS TO RIDGE INTO THE COASTAL WATERS
FROM THE EAST. THIS BERMUDA RIDGE WILL MAINTAIN LIGHT TO MODERATE
ONSHORE FLOW THROUGH THE WEEK.

RUA

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  88  68  88  67 /  20  10  10  10
KBPT  88  71  87  70 /  20  10  20  10
KAEX  87  64  88  66 /  20  10  10  10
KLFT  90  69  88  67 /  20  10  10  10

&&

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

&&

$$

PUBLIC/MARINE...07
AVIATION...24