National Weather Service Raw Text Product

534 
FXUS64 KLCH 252310
AFDLCH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
510 PM CST TUE DEC 25 2012

.UPDATE...THE LAST BIT OF CONVECTION CONTINUES TO EXIT THE CWA
LATE THIS AFTERNOON AND SEVERE WEATHER IS NO LONGER ANTICIPATED,
THEREFORE THE WATCH HAS BEEN ALLOWED TO EXPIRE. THE COLD FRONT IS
PUSHING INTO THE NW PORTIONS CWA WITH 40S AND 50S FILTERING IN.
THE FRONT WILL CONTINUE TO MOVE SOUTH AND EAST THROUGH THE EVENING
WITH COLDER AIR COVERING ALL OF THE CWA BY MIDNIGHT.

TINGLER





&&

.PREV DISCUSSION... /ISSUED 347 PM CST TUE DEC 25 2012/ 

DISCUSSION...
THE MUCH ANTICIPATED SEVERE WEATHER EVENT IS NEARING AN END FOR
THE LAKE CHARLES FORECAST AREA. SQUALL LINE HAS CLEARED ALL BUT
THE PORTIONS OF SOUTH CENTRAL LOUISIANA AND THE ADJACENT COASTAL
WATERS. AFTER DISCUSSIONS WITH RADAR OPERATORS...WILL EXTEND THE
TORNADO WATCH FOR SAINT MARY...LOWER SAINT MARTIN AND MARINE ZONE
455 THROUGH 5 PM CST...OR UNTIL THE SQUALL LINE SHOULD HAVE
CLEARED THE AREA. 

STRONG DRY PUNCH BEHIND THE SQUALL LINE IS QUICKLY ENDING THE
SHOWER ACTIVITY. THE UPPER LEVEL LOW OVER OKLAHOMA AND ARKANSAS
WILL MOVE OFF TO THE NORTHEAST TONIGHT. SOME WRAP AROUND MOISTURE
IS STILL EXPECTED TO HEAD SOUTHEAST AND MAKE ITS WAY INTO THE
NORTHERN ZONES THIS EVENING WITH A SLIGHT CHANCE OF VERY LIGHT
RAIN THAT IS EXPECTED TO END BY MIDNIGHT. AT THIS POINT...ALL THE
PRECIPITATION SHOULD END BEFORE THE MUCH COLDER ATMOSPHERIC PROFILES
ARRIVE. PRESSURE GRADIENT BETWEEN DEEP SURFACE LOW OVER NORTHEAST
LOUISIANA AND CANADIAN HIGH PRESSURE BUILDING IN FROM THE NORTH
SHOULD KEEP BLUSTERY CONDITIONS IN PLACE DURING THE EVENING
HOURS...AND ALTHOUGH WINDS DECREASE SOME BEHIND THE SQUALL
LINE...THEY SHOULD INCREASE AGAIN TO WIND ADVISORY CONDITIONS THAT
WILL LAST UNTIL ABOUT MIDNIGHT.

THE DAY AFTER CHRISTMAS SHOULD BE MUCH MORE TRANQUIL WEATHER-WISE
AS HIGH PRESSURE BUILDS ON IN WITH COOL CONDITIONS. AS THE SURFACE
HIGH MOVES ACROSS ON WEDNESDAY NIGHT BELOW FREEZING CONDITIONS
WILL BE POSSIBLE ALONG AND NORTH OF THE I-10 CORRIDOR.

PATTERN REMAINS PROGRESSIVE WITH A WARM-UP ON THURSDAY...FOLLOWED
BY THE NEXT SHORT WAVE FRIDAY AND FRIDAY NIGHT. INSTABILITY IS
EXPECTED TO BE LACKING ALONG WITH A MODIFIED GULF MOISTURE
RETURN...SO WOULD EXPECT MAINLY SHOWERS TO BE THE PREVAILING
WEATHER WITH POSSIBLY A FEW THUNDERSTORMS...WHICH WOULD NOT BE
EXPECTED TO BE TOO STRONG.

ANOTHER COOL DOWN OVER THE WEEKEND BEFORE THE ROLLER COAST STARTS
AGAIN EARLY NEXT WEEK.

RUA

MARINE...
TIGHT PRESSURE GRADIENT AND COLD AIR ADVECTION BEHIND A DEPARTING
COLD FRONT WILL ALLOW FOR STRONG AND GUSTY NORTHWEST WINDS TONIGHT
INTO WEDNESDAY MORNING. STRONG SCA CONDITIONS LOOK GOOD WITH SOME
GUSTS TO GALE FORCE. THE STRONG OFFSHORE FLOW LOOKS SUFFICIENT TO
PUSH WATER AWAY FROM THE COAST HELPING TO DROP TIDE LEVELS. TIDES
WILL RUN ABOUT 2 FEET BELOW ASTRONOMICAL PREDICTED LEVELS...WITH
ACTUAL TIDE LEVELS FROM (-1) TO (-2) MLLW...ESPECIALLY DURING LOW
TIDE WEDNESDAY MORNING. THEREFORE...HAVE ISSUED A LOW WATER
ADVISORY FOR THE COASTAL LAKES AND BAYS.

WINDS WILL BEGIN TO SUBSIDE ON WEDNESDAY AFTERNOON AS THE HIGH
PRESSURE SYSTEM SETTLES OVER THE REGION.

RUA

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  34  50  33  57  50 /  10   0   0  10  20 
KBPT  34  49  33  57  52 /  10   0   0  10  20 
KAEX  33  47  28  54  44 /  20   0   0  10  20 
KLFT  36  51  33  57  49 /  10   0   0  10  20 

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...WIND ADVISORY UNTIL MIDNIGHT CST TONIGHT FOR THE FOLLOWING 
     ZONES: ACADIA...ALLEN...AVOYELLES...BEAUREGARD...
     CALCASIEU...EAST CAMERON...EVANGELINE...IBERIA...JEFFERSON 
     DAVIS...LAFAYETTE...LOWER ST. MARTIN...RAPIDES...ST. 
     LANDRY...ST. MARY...UPPER ST. MARTIN...VERMILION...VERNON...
     WEST CAMERON.

TX...WIND ADVISORY UNTIL MIDNIGHT CST TONIGHT FOR THE FOLLOWING 
     ZONES: HARDIN...JEFFERSON...NORTHERN JASPER...NORTHERN 
     NEWTON...ORANGE...SOUTHERN JASPER...SOUTHERN NEWTON...TYLER.

GM...SMALL CRAFT ADVISORY UNTIL NOON CST WEDNESDAY FOR THE FOLLOWING 
     ZONES: COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 
     20 NM...COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON LA 
     OUT 20 NM...COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO 
     INTRACOASTAL CITY LA OUT 20 NM...WATERS FROM INTRACOASTAL 
     CITY TO CAMERON LA FROM 20 TO 60 NM...WATERS FROM CAMERON 
     LA TO HIGH ISLAND TX FROM 20 TO 60 NM...WATERS FROM LOWER 
     ATCHAFALAYA RIVER TO INTRACOASTAL CITY LA FROM 20 TO 60 NM. 

     LOW WATER ADVISORY UNTIL NOON CST WEDNESDAY FOR THE FOLLOWING 
     ZONES: CALCASIEU LAKE...SABINE LAKE...VERMILION BAY.

     SMALL CRAFT ADVISORY UNTIL 6 AM CST WEDNESDAY FOR THE FOLLOWING 
     ZONES: CALCASIEU LAKE...SABINE LAKE...VERMILION BAY.

&&

$$