Area Forecast Discussion
Issued by NWS Lake Charles, LA

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000
FXUS64 KLCH 280906
AFDLCH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
406 AM CDT THU AUG 28 2014

.SYNOPSIS...

A COOL DOME OF HIGH PRESSURE ACROSS THE MISSOURI BOOTHEEL RIDGES
SOUTHEAST INTO NORTH FLORIDA. ITS OUTER PERIPHERY IS MARKED BY A
STATIONARY FRONT...WHICH STRETCHES FROM BROWNSVILLE THROUGH TAMPA.

A FRONTAL WAVE LOW IS FOUND OVER THE EXTREME WESTERN EXTENT OF
FRONT...NEAR BROWNSVILLE.

THE BERMUDA HIGH PRESSURE SYSTEM WILL BEGIN NOSING INTO THE GULF
OF MEXICO TODAY. IN RESPONSE...THE GULF STATIONARY FRONT WILL
PIVOT POLEWARD AS A WARM FRONT...REACHING A CORPUS CHRISTI TO
JACKSONVILLE LINE BY FRIDAY...BEFORE MOVING ONSHORE THE WESTERN
UPPER GULF COAST STATES ON SATURDAY.

FURTHER-UP...

AN INVERTED TROUGH STRETCHES THROUGH BATON ROUGE THROUGH GULF POINT
28N 94W. THIS QUASI-STATIONARY TROUGH WILL OSCILLATE WEST-EAST FOR
THE NEXT COUPLE OF DAYS...BEFORE TAKING ON A WESTWARD
DRIFT...REACHING SOUTHEAST TEXAS ON SATURDAY.

&&

.DISCUSSION...

PVA LIFT ATTENDING THE INVERTED TROUGH WILL GIVE A BOOST TO THE
SLANTWISE CYCLONIC ASCENT ASSOCIATED WITH THE FRONTAL-WAVE LOW.
SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE...ESPECIALLY OVER
SOUTHEAST TEXAS.

OVER THE NEXT COUPLE OF DAYS...THE APPROACHING WARM (OR GULF)
FRONT WILL MORE ABRUPTLY DISPLACE MOIST AIR. THE FRONTAL LIFT WILL
PHASE IN WITH THE AFOREMENTIONED PVA LIFT...BRINGING ABOUT MORE
NUMEROUS SHOWERS AND THUNDERSTORMS.

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  90  76  89  76  87 /  40  20  50  50  60
KBPT  91  77  89  76  87 /  40  20  50  50  60
KAEX  92  73  91  72  85 /  20  10  30  40  60
KLFT  91  75  90  76  87 /  30  10  50  40  60

&&

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

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&&

21

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