913
FXUS64 KLCH 101859
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
159 PM CDT FRI OCT 10 2008
SYNOPSIS
CU FIELD EVIDENT ON VISIBLE IMAGERY AS BOUNDARY LAYER
MOISTURE REMAINS TRAPPED UNDER A CAP AROUND 5K FEET. OUR AREA
REMAINS IN THE TRANSITION BETWEEN DEEP AND BROAD SCALE WESTERN
UPPER LEVEL TROF AND STRONG RIDGING OVER THE EASTERN STATES.
SHALLOW RETURN FLOW MOISTURE WILL CONTINUE OUT TO OUR WEST. THE
REMNANTS OF THE EASTERN RIDGE SHOULD PROVIDE ONE MORE NIGHT WITH
SEASONABLE EARLY FALL TEMPS WITH WARMER AND MORE HUMID AIR MOVING
IN ON SOUTHEASTERLY FLOW THIS WEEKEND.
RAIN CHANCES REMAIN OUT OF THE FORECAST UNTIL TUESDAY AS THE
BLOCKING EASTERN HIGH WEAKENS UNDER THE INFLUENCE OF THE BROAD
TROF IMPINGING ON THE RIDGE AS THE TROF HEADS EAST THROUGH THE
MISSISSIPPI VALLEY. A TRAILING PACIFIC COLD FRONT WILL MAKE A PUSH
THROUGH TEXAS BEFORE STALLING TO OUR NORTHWEST. INCREASING
MOISTURE AND CONVERGENCE NEAR THE FRONTAL BOUNDARY SHOULD BE
SUFFICIENT TO PRODUCE SCATTERED SHOWERS AND THUNDERSTORMS TUESDAY
INTO WEDNESDAY.
DISCUSSION
SHADED GUIDANCE TO THE HIGH SIDE ON MIN TEMPS TNITE
AS DEW POINTS ARE ALREADY TRENDING THAT WAY. DESPITE SOME SHORT
WAVE ENERGY, THE MID LEVELS STILL ARE TOO DRY TO SUPPORT MUCH IN
THE WAY OF CLOUDS, MUCH LESS PRECIP TNITE AND SATURDAY.
AVIATION
SCT TO BKN CU SHOULD DISSIPATE WITH LOSS OF DAYTIME
HEATING. SOME LIGHT FOG WITH MVFR VIS AFTER MIDNIGHT.
PRELIMINARY POINT TEMPS/POPS
KLCH 62 85 66 84 68 / 0 0 0 5 10
KBPT 64 83 66 85 71 / 0 0 0 5 10
KAEX 63 86 66 84 66 / 0 0 0 5 10
KLFT 63 86 66 84 67 / 0 0 0 5 10
LCH WATCHES/WARNINGS/ADVISORIES
LA...NONE.
TX...NONE.
GM...NONE.
SWEENEY
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