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000
FXUS64 KLCH 231707
AFDLCH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1207 PM CDT THU MAY 23 2013

.DISCUSSION...
A BACKDOOR COLD FRONT WILL TRAVEL SOUTH AND WEST THROUGH THE
SOUTHEAST UNITED STATES...REACHING A SOUTHEAST OKLAHOMA TO
FLORIDA PANHANDLE LINE BY EARLY MORNING FRIDAY.

SINKING AIR IN THE PRE-FRONTAL ENVIRONMENT WILL TRAPPED MOISTURE
NEAR THE SURFACE..BRINGING ABOUT ANOTHER ROUND OF FOG DURING THE
OVERNIGHT HOURS.

&&

.PREV DISCUSSION... /ISSUED 927 AM CDT THU MAY 23 2013/

UPDATE...THE PREVIOUS FORECAST REMAINS ON TARGET THIS MORNING AND
NO CHANGES ARE NEEDED AT THIS TIME.

PREV DISCUSSION... /ISSUED 642 AM CDT THU MAY 23 2013/

DISCUSSION...
23/12Z TAF ISSUANCE.

AVIATION...
IFR/LIFR CIGS AND MVFR VISBYS IN AREAS OF FOG AT ALL SITES EARLY
THIS MORNING EXCEPT KLCH WHERE LIFR VISBYS OF 1/4-1/2 SM HAVE
BEEN FAIRLY CONSISTENT THE PAST FEW HOURS. CIGS/FOG WILL LIFT
THROUGH THE MORNING...BECOMING VFR BY MIDDAY WITH SLY WINDS LESS
THAN 10 KT. WINDS TO DIMINISH THIS EVENING WITH FOG AND LOW CLOUDS
REDEVELOPING AT SRN SITES BY MIDNIGHT. 24

PREV DISCUSSION... /ISSUED 355 AM CDT THU MAY 23 2013/

DISCUSSION...
WEAK SURFACE BOUNDARY THAT ENTERED THE FORECAST AREA YESTERDAY HAS
BECOME MAINLY DIFFUSE AS IT DRIFTED BACK TO THE NORTH...LEAVING
BEHIND A MOIST ATMOSPHERE WITH LIGHT SOUTH WINDS. PATCHY FOG IS
THE FIRST ISSUE OF THE DAY. VISIBILITIES HAVE BEEN MAINLY BOUNCING
AROUND BETWEEN 1/2SM AND 3SM...AND THEREFORE A DENSE FOG ADVISORY
IS NOT NEEDED AT THIS TIME...AND NOT ANTICIPATED EITHER AS ANY
DENSE FOG SHOULD REMAIN ISOLATED. WITH DECENT MOISTURE HANGING
AROUND...DAYTIME HEATING MAY BE ABLE TO KICK OFF AN ISOLATED
THUNDERSTORM OR TWO DURING THE AFTERNOON HOURS...WITH ANY ACTIVITY
THAT DEVELOPS DECREASING AFTER SUNSET.

HIGH PRESSURE MOVING ACROSS THE MIDWEST WILL RIDGE DOWN TOWARD THE
REGION ON FRIDAY...HELPING TO PUSH A WEAK COOL FRONT INTO THE
FORECAST AREA. THIS FRONT MAY HELP FOCUS A FEW SHOWERS OR
THUNDERSTORMS WITH DAYTIME HEATING ON FRIDAY AFTERNOON. THIS FRONT
WILL STALL AND WASH-OUT ON SATURDAY FROM ALONG THE SOUTH CENTRAL
LOUISIANA COAST BACK INTO SOUTHEAST TEXAS. A FEW SHOWERS OR
THUNDERSTORMS MAY AGAIN BE POSSIBLE OVER SOUTHEAST TEXAS WHERE
BETTER LOW LEVEL MOISTURE WILL REMAIN. LESS HUMID CONDITIONS WILL
BE FELT BEHIND THIS FRONT FOR THE REMAINDER OF THE FORECAST AREA.

UPPER LEVEL RIDGING WILL THEN BEGIN TO BUILD OVER THE FORECAST
AREA ON SUNDAY INTO EARLY NEXT WEEK. THIS WILL PROVIDE A DRY AND
RATHER WARM MEMORIAL DAY.

RUA

MARINE...
LIGHT SOUTHERLY WINDS WILL CONTINUE THROUGH FRIDAY...AS WEAK HIGH
PRESSURE RIDGES ACROSS THE NORTHERN GULF OF MEXICO. A WEAK SURFACE
FRONT WILL MOVE DOWN TOWARD THE COAST LATE FRIDAY...THEN WASH OUT
ON SATURDAY. BRIEF EASTERLY WINDS WILL OCCUR AS HIGH PRESSURE OVER
THE MIDWEST BUILDS IN BEHIND THE FRONT. ONSHORE FLOW WILL RESUME
BY SUNDAY...AND INCREASE EARLY NEXT WEEK AS A BERMUDA HIGH AGAIN
RIDGES ACROSS THE NORTHERN GULF.

RUA

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  89  71  89  69  87 /  20  10  20  10  10
KBPT  88  71  88  70  86 /  20  10  20  10  10
KAEX  91  69  88  63  87 /  20  10  20  10  10
KLFT  89  71  89  67  88 /  20  10  20  10  10

&&

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

$$