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000 

WGUS64 KLIX 102141

FFSNEW

LAZ034>040-046>050-056>070-MSZ068>071-077-080-110330-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE NEW ORLEANS LA

440 PM CDT SUN JUN 10 2001



...A FLASH FLOOD/FLOOD WATCH REMAINS IN EFFECT THROUGH TONIGHT       

   FOR ALL OF EAST CENTRAL AND SOUTHEAST LOUISIANA AND THE           

   ADJACENT MISSISSIPPI COUNTIES...



   ...THE FOLLOWING CITIES AND COMMUNITIES ARE INCLUDED IN THE

   WATCH....BATON ROUGE...MCCOMB...HAMMOND... SLIDELL...

   DONALDSONVILLE...HOUMA...THIBODAUX...METAIRIE...NEW ORLEANS...

   PICAYUNE...POPLARVILLE...BAY ST LOUIS AND WAVELAND...



A FLASH FLOOD/FLOOD WATCH MEANS THAT FLASH FLOODING/FLOODING IS

POSSIBLE IN AND NEAR THE WATCH AREA...ESPECIALLY NEAR STREAMS...

BAYOUS...AND AREAS OF POOR DRAINAGE.



THE POORLY DEFINED CENTER OF A BROAD LOW PRESSURE AREA ASSOCIATED 

WITH THE REMNANTS OF FORMER TROPICAL STORM ALLISON WERE LOCATED 

ABOUT 80 MILES SOUTH OF CAMERON LOUISIANA AT 430 PM DRIFTING SLOWLY 

EAST. THE PROXIMITY OF THE WATCH AREA TO THIS BROAD AREA OF LOW 

PRESSURE WILL MAINTAIN A VERY DEEP MOIST TROPICAL AIRMASS THROUGH 

MONDAY. THIS WILL PROLONG THE RISK OF HEAVY RAINFALL AND RESULTANT 

FLOODING ACROSS THE WATCH AREA THROUGH TONIGHT AS HEAVY SHOWERS OR 

THUNDERSTORMS TRAIN OVER THE SAME AREA FOR SEVERAL HOURS.



THE MAIN FOCUS FOR HEAVY RAINFALL THIS EVENING WILL REMAIN GENERALLY 

SOUTH OF INTERSTATE 12 IN SOUTHEAST LOUISIANA WHERE 2 TO 3 INCHES OF 

RAINFALL ARE POSSIBLE THIS EVENING WITH 3 TO 5 INCHES OF ADDITIONAL 

RAINFALL POSSIBLE IN SOUTHERN PORTIONS OF TERREBONNE...LAFOURCHE... 

JEFFERSON...AND PLAQUEMINES PARISHES. FOR THE REMAINDER OF THE WATCH 

AREA...RAINFALL TOTALS WILL AVERAGE ONE HALF TO ONE INCH THIS 

EVENING. IT IS ANTICIPATED THAT HOURLY PRECIPITATION ACCUMULATIONS 

WILL SIGNIFICANTLY INCREASE BEGINNING AROUND MIDNIGHT ACROSS THE 

WATCH AREA AS THE LOW PRESSURE AREA MOVES EAST NORTHEAST TO THE 

VICINITY OF ATCHAFALAYA BAY. 



THIS FLASH FLOOD WATCH WILL LIKELY BE EXTENDED FOR PORTIONS OF  

SOUTHEAST LOUISIANA AND COASTAL MISSISSIPPI INTO MONDAY AS 

CONDITIONS MAY REMAIN FAVORABLE FOR VERY HEAVY RAIN DUE TO THE 

EASTWARD MOVEMENT OF THE AREA OF LOW PRESSURE ACROSS SOUTHERN 

MISSISSIPPI AND ALABAMA.



COASTAL PORTIONS OF SOUTHEAST LOUISIANA HAVE SEEN TORRENTIAL 

RAINFALL FOR MOST OF TODAY IN ADDITION TO THE SIGNIFICANT RAINFALL 

ACCUMULATIONS OF THE PAST FIVE DAYS. RIVERS AND BAYOUS ACROSS THE 

WATCH AREA...ESPECIALLY THOSE OF EXTREME SOUTHEASTERN LOUISIANA... 

HAVE SWOLLEN TO FLOOD. DRAINAGE SYSTEMS WILL BE VERY SLOW TO RESPOND 

AS ADDITIONAL RAINFALL ACCUMULATES THIS EVENING INCREASING THE 

THREAT OF FLOODING OF FLOOD PRONE AND LOW LYING AREAS ACROSS 

SOUTHERN MISSISSIPPI AND SOUTHEASTERN LOUISIANA. 



IF FLOODING IS OBSERVED...ACT QUICKLY. MOVE TO HIGHER LOCATIONS TO

ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN

WATER BEGINS RISING...AND DO NOT DRIVE INTO AREAS WHERE WATER COVERS

THE ROAD.



STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION

STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS

AND WARNINGS CONCERNING THIS DANGEROUS AND EXTENDED FLASH FLOOD

SITUATION.

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