FXUS64 KLCH 052154 AAA
AFDLCH
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LAKE CHARLES LA
354 PM CST SAT DEC 5 2009
.DISCUSSION...
AFTER YESTERDAYS SNOWFALL AND A WIDESPREAD FREEZE THIS
MORNING...MAJOR WEATHER CHANGES TO TAKE PLACE OVER THE NEXT 24
HOURS WITH MUCH WARMER TEMPERATURES AND GULF MOISTURE POISED TO
MOVE INTO THE CWA. SEVERAL INTENSE SHORTWAVES TRAVELING THROUGH
THE ZONAL FLOW EXPECTED ACROSS THE CONUS OVER THE NEXT WEEK WILL
CONTINUE TO BRING RAPID DAILY WEATHER CHANGES THROUGHOUT THE
FORECAST PERIOD.
ANOTHER CHILLY NIGHT IS ANTICIPATED TONIGHT...WITH A LIGHT FREEZE
LIKELY FOR MOST AREAS NORTH OF I-10 AND LOWS IN THE 20S ONCE AGAIN
ACROSS CENTRAL LOUISIANA. HOWEVER..SINCE ALL AREAS SAW A FREEZE
THIS MORNING...FREEZE WARNINGS WILL NOT BE REQUIRED UNTIL THE
FINAL FREEZE OF THE SEASON IN THE SPRING...OR IF A HARD FREEZE IS
ANTICIPATED.
ONSHORE FLOW IS ALREADY RETURNING ALONG THE CENTRAL TEXAS COAST
AHEAD OF A STRONG 60KT 500MB SHORTWAVE WHICH WILL EJECT OUT OF
NORTHERN MEXICO INTO OUR REGION ON SUNDAY. LOW LEVEL MOISTURE WILL
RAPIDLY INCREASE ON SUNDAY WITH STRONG WAA BRINGING SHOWERS TO THE
SOUTHWESTERN ZONES BY SUNDAY MORNING...AND SHOWERS AND ISOLATED
STORMS TO ALL ZONES DURING THE AFTERNOON AND EVENING. FORECAST
SOUNDINGS SOUTH OF I-10 FOR SUNDAY EVENING SHOW STRONG LOW LEVEL
SRH WITH WEAK CAPE...SO NOT OUT OF THE QUESTION WE COULD SEE A FEW
STRONG STORMS IN THE COASTAL WATERS AND POSSIBLY EVEN IN OUR
COASTAL COUNTIES AND PARISHES.
AS THIS STORM EXITS THE AREA TO THE EAST IT WILL SHOVE A COLD
FRONT INTO OUR COASTAL WATERS ON MONDAY...BUT THE FRONT WILL
QUICKLY RETURN NORTHWARD MONDAY NIGHT AND TUESDAY AS AN EVEN
STRONGER 100KT 500MB JET STREAK MOVES ACROSS THE SOUTHERN PLAINS.
HARD TO BELIEVE BUT TEMPERATURES WILL WARM INTO THE 70S ON TUESDAY
IN THE SOUTHERN ZONES WITH SHOWERS AND THUNDERSTORMS EXPECTED ONCE
AGAIN. THE COLD FRONT WILL BE FORCED SOUTHWARD INTO THE GULF AS
THE SHORTWAVE RACES OFF TO THE EAST...WITH A BRIEF DRY PERIOD
ANTICIPATED WEDNESDAY AFTERNOON THROUGH THURSDAY EVENING.
HOWEVER...OUR TENNIS MATCH LIKE WEATHER WILL CONTINUE WITH THE
NEXT SYSTEM ON ITS WAY...AS THE FRONT WILL RETREAT BACK NORTHWARD
THURSDAY NIGHT AND FRIDAY WITH ADDITIONAL WIDESPREAD SHOWERS AND
STORMS.
&&
.MARINE...
ONSHORE FLOW IS RETURNING TO THE TEXAS COAST THIS AFTERNOON...AND
WILL SPREAD EASTWARD AND STRENGTHEN ACROSS ALL OF THE COASTAL
WATERS TONIGHT. SCA CONDITIONS ARE POSSIBLE AS SOON AS SUNRISE
SUNDAY MORNING IN THE WESTERN WATERS...BUT APPEAR MORE LIKELY
DURING THE DAY ON SUNDAY AND WILL NOT RAISE SCA FLAGS AT THIS
TIME. APPEARS STRENGTH OF WAA AND EXPECTED INSTABILITY LEVELS WILL
RESULT IN WIDESPREAD SHOWERS AND EVEN A FEW STRONG STORMS SUNDAY
AFTERNOON INTO SUNDAY NIGHT. STRONG ONSHORE WINDS WILL CONTINUE
SUNDAY NIGHT BEFORE A COLD FRONT BRINGS BRIEF OFFSHORE WINDS ON
MONDAY. THIS FRONT WILL STALL OVER THE GULF WATERS AND MOVE
QUICKLY BACK NORTHWARD MONDAY NIGHT AND TUESDAY...WITH GUSTY
SOUTHERLY WINDS AND ADDITIONAL SHOWERS AND STORMS ANTICIPATED.
NORTHERLY FLOW AND DRY CONDITIONS WILL BE SEEN WEDNESDAY INTO
THURSDAY...BUT GULF MOISTURE LOOKS TO RETURN YET AGAIN BY FRIDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
KLCH 34 59 54 66 54 / 10 50 60 20 60
KBPT 37 58 53 64 55 / 10 60 60 20 60
KAEX 28 56 48 63 49 / 10 40 60 20 60
KLFT 33 61 53 68 54 / 10 40 60 20 60
&&
.LCH WATCHES/WARNINGS/ADVISORIES...
LA...NONE.
TX...NONE.
GM...NONE.
&&
$$
SHAMBURGER
