Flash Flood Warning 13, NWS Lake Charles, LA

242 
WGUS74 KLCH 181320
FFSLCH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
820 AM CDT WED AUG 18 2010

LAC009-039-079-097-181515-
/O.CON.KLCH.FF.W.0013.000000T0000Z-100818T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RAPIDES LA-AVOYELLES LA-EVANGELINE LA-ST. LANDRY LA-
820 AM CDT WED AUG 18 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT FOR ST.
LANDRY...EVANGELINE...AVOYELLES AND EAST CENTRAL RAPIDES PARISHES...

AT 802 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE HEAVY RAINS OCCURRING MAINLY OVER AVOYELLES PARISH THAT IS 
CAPABLE OF PRODUCING FLASH FLOODING. RADAR ESTIMATES AND GAUGE 
REPORTS INDICATE THAT 6 TO 9 INCHES OF RAIN HAS FALLEN BETWEEN 
BUNKIE AND MANSURA. THIS HEAVY RAINS EXTENDS SOUTH TO NEAR DUPONT. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
RUBY...POLAND...BIG BEND...MOREAUVILLE...MARKSVILLE...MANSURA... 
HESSMER...ECHO...COTTONPORT...CHENEYVILLE AND BORDELONVILLE.

SOME DRAINAGE SYSTEMS THAT MAY BE FLOODED INCLUDE BUT ARE NOT 
LIMITED TO CHOCTAW BAYOU...BAYOU DES GLAISES AND JACK BAYOU. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 5 INCHES ARE POSSIBLE IN THE 
WARNED AREA IN THE NEXT FEW HOURS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN LAKE
CHARLES.

&&

LAT...LON 3114 9170 3106 9170 3098 9180 3088 9179
      3086 9181 3082 9180 3077 9174 3074 9173
      3066 9211 3049 9213 3049 9229 3065 9250
      3082 9249 3089 9228 3094 9232 3102 9233
      3123 9228

$$

BRAZZELL

585 
WGUS74 KLCH 181417
FFSLCH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
917 AM CDT WED AUG 18 2010

LAC009-039-079-097-181515-
/O.CON.KLCH.FF.W.0013.000000T0000Z-100818T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RAPIDES LA-AVOYELLES LA-EVANGELINE LA-ST. LANDRY LA-
917 AM CDT WED AUG 18 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT FOR
NORTHERN ST. LANDRY...NORTHEASTERN EVANGELINE...AVOYELLES AND
SOUTHEASTERN RAPIDES PARISHES...

AT 857 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH 
FLOODING OCCURRING IN AVOYELLES PARISH PARTICULARLY AROUND THE 
HESSMER AND MANSURA AREAS. REPORTS OF HOMES FLOODED ALONG WITH 
SEVERAL STALLED VEHICLES HAVE BEEN RECEIVED. RADAR AND GAUGE REPORTS 
INDICATE THAT RAINFALL AMOUNTS OF 5 TO 9 INCHES HAVES OCCURRED SINCE 
3 AM ACROSS THE CENTRAL AVOYELLES PARISH WITH ABOUT 6 INCHES OF RAIN 
SINCE 6 AM. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BIG BEND...
MARKSVILLE...ECHO AND BORDELONVILLE

DRAINAGE SYSTEM THAT MAY BE FLOODED INCLUDE BUT ARE NOT LIMITED TO 
CHOCTAW BAYOU...JACK BAYOU AND BAYOU DES GLAISES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 ARE POSSIBLE IN THE WARNED 
AREA AND HEAVY RAINS CONTINUE TO DEVELOP OVER NORTHWEST AVOYELLES 
PARISH AND MOVE TO THE SOUTHEAST OVER THE SAME AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...PARISH ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN LAKE
CHARLES.

&&

LAT...LON 3121 9219 3114 9170 3106 9170 3098 9180
      3088 9179 3086 9181 3082 9180 3077 9174
      3074 9173 3066 9211 3089 9228 3094 9232
      3102 9233

$$

BRAZZELL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
417 AM CDT WED AUG 18 2010

.SYNOPSIS...
A BROAD LOW...THE REMNANT OF TROPICAL DEPRESSION FIVE...IS CURRENTLY
SITUATED JUST WEST OF NATCHEZ. THIS PERSISTENT SYSTEM WILL DRIFT
SLOWLY NORTHEAST...REACHING KNOXVILLE BY EARLY MORNING SATURDAY.

A TROUGH EARLOBES SOUTHWEST FROM ITS PARENT LOW THROUGH LAKE CHARLES
TO JUST OFFSHORE THE MIDDLE TEXAS COASTAL WATERS. THIS TROUGH WILL
DRIFT SLOWLY EASTWARD...ATTACHED TO ITS PARENT.

FURTHER-UP...SHORTWAVES...EMANATING OUT OF THE COLORADO FRONT RANGE
...CONTINUE TO PROPAGATE SOUTHWARD. THE TRACK OF THE WAVE TRAIN
EXTENDS THROUGH EAST TEXAS TO AROUND THE OUTER PERIPHERY OF THE
BROAD LOW.

&&

.DISCUSSION...
A WARM CONVEYOR BELT AIRSTREAM REMAINS INTACT ACROSS THE WESTERN
UPPER GULF COAST STATES. CARIBBEAN AIR STREAMING NORTHWARD ASCENDS
UPON ENCOUNTERING THE AFOREMENTIONED BROAD LOW-TROUGH SYSTEM.

OBVIOUSLY...DEEP MOISTURE IS IN PLACE. PRECIPITABLE WATER VALUES ARE
RUNNING NEAR 2.5 INCHES...ABOUT 150 PERCENT OF NORMAL FOR AUGUST.

IN ADDITION...THE GENTLE (OR INCLINED) SYNOPTIC LIFT ASSOCIATED WITH
THE WARM CONVEYOR BELT IS GETTING AN ADDED BOOST FROM MESO LIFT
ATTENDING THE PASSING SHORTWAVES ALOFT.

AREAS OF RAIN WITH EMBEDDED SHOWERS AND THUNDERSTORMS ARE EXPECTED
FOR TODAY AND THURSDAY.

OTHERWISE...THE AFTERNOON TEMPERATURES WILL BE RUNNING AT OR
SLIGHTLY ABOVE NORMAL. HEAT INDEXES MAY REACH 105 DEGREES ACROSS THE
LAKES REGION THIS AFTERNOON.

&&

.MARINE...
THE SEA STATE WILL BE CHARACTERIZED BY 4-SECOND WIND WAVES OUT OF
THE SOUTH. THE SIGNIFICANT WAVE HEIGHTS WILL RANGE FROM 2 TO 3 FEET...
EXCEPT HIGHER IN SHOWERS AND THUNDERSTORMS.

&&

.OUTLOOK...
THE REMNANT OF TROPICAL DEPRESSION FIVE WILL TURN MORE TO THE EAST
OVER THE WEEKEND...REACHING THE OUTER BANKS OF NORTH CAROLINA BY LATE
AFTERNOON TUESDAY. ITS SIBLING TROUGH WILL EARLOBE SOUTHWEST TO
ACROSS THE FLORIDA PANHANDLE.

THE GFS MODEL DEPICTS WEAK CYCLOGENESIS OVER THE SOUTHERN TIP OF
TROUGH NEAR APALACHICOLA BY EARLY NEXT WEEK. THE REMNANT OF TROPICAL
DEPRESSION FIVE AND ITS SIBLING TROUGH REFUSE TO DIE.

&&

.PRELIMINARY POINT TEMPS/POPS...
KLCH  93  77  90  77  93 /  70  60  70  30  40
KBPT  94  77  91  77  94 /  60  60  60  30  40
KAEX  95  75  93  74  95 /  70  70  60  20  40
KLFT  90  76  88  75  93 /  70  70  70  20  50

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...FLASH FLOOD WATCH THROUGH THIS EVENING FOR THE FOLLOWING ZONES:
     ACADIA...AVOYELLES...EVANGELINE...IBERIA...LAFAYETTE...
     LOWER ST. MARTIN...ST. LANDRY...ST. MARY...UPPER ST.
     MARTIN...VERMILION.

TX...NONE.
GM...NONE.
&&
TRARES

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
437 AM CDT WED AUG 18 2010

GMZ430-432-435-450-452-455-470-472-475-LAZ027>033-041>045-051>055-
TXZ180>182-201-215-216-191100-
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 EXTENDING FROM 20 NM
TO 60 NM-
WATERS FROM INTRACOASTAL CITY, LA TO CAMERON, LA EXTENDING FROM
20 NM TO 60 NM-
WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY, LA
EXTENDING FROM 20 NM TO 60 NM-VERNON-RAPIDES-AVOYELLES-BEAUREGARD-
ALLEN-EVANGELINE-ST. LANDRY-CALCASIEU-JEFFERSON DAVIS-ACADIA-
LAFAYETTE-UPPER ST. MARTIN-CAMERON-VERMILION-IBERIA-ST. MARY-
LOWER ST. MARTIN-TYLER-JASPER-NEWTON-HARDIN-JEFFERSON-ORANGE-
437 AM CDT WED AUG 18 2010

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
MEAN AREAL RAINFALL AMOUNTS OVER A 12-HOUR PERIOD ENDING EARLY
THIS EVENING ARE EXPECTED TO RANGE FROM AROUND 1/2 INCH ACROSS
SOUTHEAST TEXAS TO AROUND 3 INCHES ACROSS SOUTH CENTRAL AND EAST
CENTRAL LOUISIANA.

LOCALIZED AMOUNTS OVER THE SAME 12-HOUR PERIOD WILL RANGE...FROM
1 TO 2 INCHES ACROSS SOUTHEAST TEXAS...TO FROM 3 TO 5 INCHES ACROSS
SOUTH CENTRAL AND EAST CENTRAL LOUISIANA.

IN ADDITION...RAINFALL RATES WILL BE INTENSE AT TIMES...RANGING
FROM 2 TO 4 INCHES PER HOUR IN THE STRONGER SHOWERS. FREQUENT LIGHTING
WILL ACCOMPANY THESE STORMS.

A FLASH FLOOD WATCH IS IN EFFECT FOR SOUTH CENTRAL AND PORTIONS OF
EAST CENTRAL LOUISIANA FOR TODAY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO RETURN IN EARNEST ON
THURSDAY. ANOTHER FLASH FLOOD WATCH MAY BE REQUIRED.

THE AREAL EXTENT OF SHOWERS AND THUNDERSTORMS WILL DECREASE ON
FRIDAY...WITH THE HEAVIEST ACTIVITY OVER SOUTH CENTRAL AND EAST
CENTRAL LOUISIANA.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED TODAY AND THURSDAY DUE TO THE
POTENTIAL FOR FLOODING.