Special Weather Statement, NWS Lake Charles, LA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
315 PM CDT SAT JUL 28 2012

.DISCUSSION...
SFC ANALYSIS SHOWS WEAK RIDGING WITH THE BERMUDA HIGH ACROSS THE N
GULF KEEPING LIGHT SW WINDS ACROSS THE REGION. LATEST SAT/RADAR
IMAGERY SHOWS SCT SHRA/TSRA DEVELOPING THIS AFTERNOON ACROSS C AND
SC LA.

THIS ACTIVITY WILL CONTINUE INTO THE EVENING HOURS ALONG AND AHEAD
OF A REMNANT VORT MAX MOVING SW ACROSS C AND S LA. THUS...KEPT
POPS 30-50% ACROSS THIS REGION THRU EARLY EVENING...DIMINISHING
LATE THIS EVENING. WILL KEEP AT LEAST A SLIGHT CHANCE DURING THE
OVERNIGHT HOURS ACROSS COASTAL LA INTO THE COASTAL WATERS AS
LINGERING SHRA/TSRA CONTINUES TO MOVE SW.

BY SUN...THE MID/UPPER RIDGE WILL CONTINUE TO BUILD STRONGER
ACROSS N TX/OK...WITH A PREDOMINATE NE FLOW ALOFT OVER SE TX/LA.
MORNING LOWS ONLY EXPECTED TO DIP INTO THE UPPER 70S. WITH REMNANT
MOISTURE AND WEAK LIFT FROM TODAY'S SYSTEM...AND A WEAK SEABREEZE
POSSIBLE...LEFT THE INHERITED 20% ALONG THE I-10 CORRIDOR
SOUTHWARD INTO THE COASTAL WATERS FOR SUN. OTHERWISE...HOT AND
HUMID CONDITIONS WILL PREVAIL AS AFTERNOON HIGHS RANGE INTO THE
MID 90S ACROSS SE TX/S LA...WITH UPPER 90S TO JUST SHY OF THE
CENTURY MARK FURTHER INLAND. HEAT INDEX VALUES WILL BE A FACTOR
AGAIN SUN. WITH DEWPTS EXPECTED TO REMAIN IN THE LOWER/MID 70S
DURING MAX HEATING...HEAT INDEX VALUES WILL RANGE IN THE 104-107
RANGE.

WITH THE UPPER HIGH NOT EXPECTING TO MOVE MUCH THE NEXT SEVERAL
DAYS...CONTINUED HOT AND HUMID CONDITIONS EXPECTED WITH ONLY A
SLIM CHANCE OF SHRA/TSRA...MAINLY ACROSS S LA.

DML

&&

.MARINE...
SOUTHWEST WINDS 5-10 KTS WITH SEAS 1-2 FT WILL CONTINUE AS THE
BERMUDA HIGH RIDGES ACROSS THE NORTHERN GULF OF MEXICO. CHANCES OF
SHOWERS AND THUNDERSTORMS WILL CONTINUE TONIGHT AS AN UPPER LEVEL
DISTURBANCE MOVES SOUTHWEST ACROSS THE REGION. SHOWER AND
THUNDERSTORMS CHANCES WILL DIMINISH EARLY NEXT WEEK AS AN UPPER
LEVEL RIDGE BUILDS OVER THE AREA.

DML

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  78  95  78  94  78 /  40  20  10  10  10
KBPT  79  94  78  93  78 /  10  10  10  10  10
KAEX  76  99  75  99  76 /  20  10  10  10  10
KLFT  77  95  77  94  77 /  50  20  10  10  10

&&

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

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
524 AM CDT SAT JUL 28 2012

GMZ430-432-435-450-452-455-470-472-475-LAZ027>033-041>045-052>055-
073-074-TXZ180-201-215-216-259>262-291030-
SABINE LAKE-CALCASIEU LAKE-VERMILION BAY-
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 CAMERON LA TO HIGH ISLAND TX FROM 20 TO 60 NM-
WATERS FROM  INTRACOASTAL CITY TO CAMERON LA FROM 20 TO 60 NM-
WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY LA FROM
20 TO 60 NM-VERNON-RAPIDES-AVOYELLES-BEAUREGARD-ALLEN-EVANGELINE-
ST. LANDRY-CALCASIEU-JEFFERSON DAVIS-ACADIA-LAFAYETTE-
UPPER ST. MARTIN-VERMILION-IBERIA-ST. MARY-LOWER ST. MARTIN-
WEST CAMERON-EAST CAMERON-TYLER-HARDIN-JEFFERSON-ORANGE-
NORTHERN JASPER-NORTHERN NEWTON-SOUTHERN JASPER-SOUTHERN NEWTON-
524 AM CDT SAT JUL 28 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST
GULF OF MEXICO...CENTRAL LOUISIANA...SOUTH CENTRAL LOUISIANA...
SOUTHWEST LOUISIANA...WEST CENTRAL LOUISIANA AND SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS ARE LIKELY THIS AFTERNOON ACROSS PARTS
OF CENTRAL AND SOUTH CENTRAL LOUISIANA...GENERALLY ALONG AND EAST
OF A LINE FROM ALEXANDRIA TO LAKE ARTHUR. THE RISK OF WIDESPREAD
SEVERE WEATHER IS LOW...THOUGH ISOLATED SEVERE THUNDERSTORMS ARE
POSSIBLE...WITH DAMAGING WINDS THE GREATEST HAZARD. DUE TO THE
HIGH ATMOSPHERIC MOISTURE CONTENT...THUNDERSTORMS WILL ALSO BE
CAPABLE OF VERY HIGH RAINFALL RATES...WHICH COULD PRODUCE
LOCALIZED FLOODING.

AWAY FROM SHOWER AND THUNDERSTORM ACTIVITY...AFTERNOON HEAT
INDICES ARE FORECAST TO REACH 100 TO 105 DEGREES. PERSONS ENGAGED
IN OUTDOOR ACTIVITIES ARE URGED TO TAKE REASONABLE PRECAUTIONS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

AFTERNOON HEAT INDICES ARE FORECAST TO REACH 100 TO 105 DEGREES
THE REST OF THIS WEEK...WITH THE HIGHEST VALUES EXPECTED ON
SUNDAY. PERSONS ENGAGED IN OUTDOOR ACTIVITIES ARE URGED TO TAKE
REASONABLE PRECAUTIONS.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT.

13

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
411 PM CDT SAT JUL 28 2012

LAZ052-074-282200-
VERMILION LA-EAST CAMERON LA-
411 PM CDT SAT JUL 28 2012

...SIGNIFICANT WEATHER ADVISORY FOR VERMILION AND CAMERON PARISHES
UNTIL 500 PM CDT...

AT 407 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
CLUSTER OF STRONG THUNDERSTORMS OVER KLONDIKE...MOVING SOUTHWEST AT 15
MPH.

* THE CLUSTER OF STRONG THUNDERSTORMS WILL BE NEAR...
  FLORENCE LANDING BY 430 PM...

THE PRIMARY THREATS FROM THESE STORMS ARE CONTINUOUS LIGHTNING AND
WIND GUSTS TO NEAR 40 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW
AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR
BUILDING UNTIL THESE STORMS HAVE PASSED.

THESE STORMS COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A
SHORT PERIOD OF TIME...RESULTING IN PONDING OF WATER AROUND LOW LYING
ROADWAYS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED
ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING.

LAT...LON 2990 9304 3004 9281 3004 9271 3008 9263
      3006 9253 2975 9239

RUA