FLASH FLOOD WATCH
Warning Issue Date: 506 AM CST TUE DEC 15 2009
...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON...
THE FLASH FLOOD WATCH CONTINUES FOR
* PORTIONS OF LOUISIANA AND SOUTHEAST TEXAS...INCLUDING THE
FOLLOWING AREAS...IN LOUISIANA...ACADIA...ALLEN...AVOYELLES...
CALCASIEU...CAMERON...EVANGELINE...IBERIA...JEFFERSON DAVIS...
LAFAYETTE...LOWER ST. MARTIN...ST. LANDRY...ST. MARY...UPPER
ST. MARTIN AND VERMILION. IN SOUTHEAST TEXAS...JEFFERSON AND
ORANGE.
* THROUGH THIS AFTERNOON
* NUMEROUS SHOWERS AND THUNDERSTORMS HAVE DEVELOPED THIS MORNING
OVER EAST CENTRAL LOUISIANA IN ASSOCIATION WITH A COLD FRONT
CROSSING THE REGION. THIS ACTIVITY WILL CONTINUE TO BUILD SOUTH
IN TANDEM WITH THE FRONT...WITH ACTIVITY EXTENDING WELL NORTH OF
FRONTAL BOUNDARY. 1 TO 2 INCHES OF RAINFALL...WITH LOCALLY HIGHER
AMOUNTS...WILL BE POSSIBLE IN THE WATCH AREA ALONG AND NORTHWEST
OF A LINE FROM PORT ARTHUR TEXAS TO OPELOUSAS LOUISIANA.
* SOUTH OF THIS LINE...SHOWERS AND THUNDERSTORMS HAVE CONTINUED
TO DEVELOP AND TRACK ALONG AN OLD WARM FRONT STRETCHING FROM ABOUT
20NM SOUTH OF SABINE PASS EAST NORTHEAST TO JUST SOUTH OF LAFAYETTE.
RAINFALL ESTIMATES IN THIS AREA OVERNIGHT HAVE AVERAGED BETWEEN 1
TO 3 INCHES...WITH DOPPLER RADAR ESTIMATING UP TO 6 INCHES IN
SPOTS. AN ADDITIONAL 2 TO 4 INCHES IS POSSIBLE TODAY...AS ACTIVITY
CONTINUES TO DEVELOP AND TRAIN OVER THESE SAME AREAS
* FLOODING OF ROADWAYS AND LOW LYING AREAS WILL BE COMMON WHERE
EXCESSIVE RAINS FALL. IN ADDITION...URBAN AREAS AND
UNDERPASSES WILL BE PRONE TO RAPID FLOODING DUE TO HEAVY
RAINFALL AND MOTORISTS ARE URGED TO USE EXTREME CAUTION AND TO
AVOID DRIVING IN AREAS WHERE WATER COVERS THE ROADWAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
$$
13
|
|
|
