FXUS64 KLCH 200204
AFDLCH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
900 PM CDT SAT JUN 19 2004

.DISCUSSION...REGIONAL 88DS SHOWING NUMEROUS RW/TRW AFFECTING NRN & 
CNTL LA AHEAD OF APPROACHING S/WV. AFTER QUICK BUILDUP OVER PAST HR 
OR SO IR PIX SHOW CLOUD TOPS WARMING WHILE RADARS SHOW 
REFLECTIVITIES DECREASING. KLCH 00Z SOUNDING SHOWS A MOIST UNSTABLE 
AIRMASS SO CONVECTION MAY LINGER A LITTLE LONGER BEFORE LOSS OF 
DAYTIME HEATING FINALLY BRINGS ACTIVITY TO A RELATIVE END. WILL 
UPDATE THE ZONES TO HOLD ONTO ISOLATED OVRNGT POPS FOR THE NRN 
ZONES. ALL ELSE LOOKS FINE.
&&

.PREVIOUS DISCUSSION...
.SYNOPSIS...
A COOL MIDWEST HIGH WILL RIDGE SOUTH INTO NORTHERN LOUISIANA. A WEAK
AXIS-OF-DILATATION WILL EXTEND ALONG A LINE FROM LUFKIN THROUGH
LAFAYETTE; SEPARATING FEEBLE EASTERLIES NORTH (ACROSS THE PINEY
HILLS) FROM FEEBLE SOUTHERLIES SOUTH (ACROSS THE COASTAL MARSHES).

THIS AXIS-OF-DILATATION WILL PERSIST INTO SUNDAY. FURTHER-UP, GROUP
WAVES, EMANATING OUT OF THE COLORADO ROCKIES, WILL PASS OVER THE
AXIS-OF-DILATATION DURING THE AFTERNOON HOURS ON SUNDAY.

.DISCUSSION...
THE AXIS-OF-DILATATION WILL SEPARATE A CONTINENTAL TROPICAL AIR MASS
NORTH, FROM A MARITIME TROPICAL AIR MASS SOUTH. CONSEQUENTLY, THE
OVERNIGHT MINIMUMS WILL BE ABOUT SEASONABLE NORTH, AND A FEW
FAHRENHEIT DEGREES ABOVE-NORMAL SOUTH.

FOR SUNDAY, LIGHT SURFACE WINDS WILL PERMIT AN ACCUMULATION OF HEAT
WITHIN THE BOUNDARY LAYER. THE AFTERNOON MAXIMUMS WILL REACH THE
LOWER 90S ONCE AGAIN (A FEW FAHRENHEIT DEGREES ABOVE NORMAL); THE
APPARENT TEMPERATURES (OR HEAT INDICES) WILL BE AROUND 105 DEGREES
FAHRENHEIT.

ALSO, SCATTERED CONVECTIVE RAINS ARE EXPECTED; ESPECIALLY NEAR THE
AXIS-OF-DILATATION.

21/21

&&

.PRELIMINARY POINT TEMPS/POPS...
LCH  77  92  75  90 /  40  50  20  40
BPT  76  92  75  90 /  40  50  20  40
AEX  73  93  73  90 /  30  70  20  40
LFT  78  92  74  90 /  60  50  20  40

&&

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

&&

$$

LGE