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Tropical Depression ALLISON Advisory Number 10
 
Issued 21:00Z Jun 07, 2001
 
Advisory Selection
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STORM SUMMARY NUMBER 10 FOR TROPICAL DEPRESSION "ALLISON" 
NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION
HYDROMETEOROLOGICAL PREDICTION CENTER...NWS...CAMP SPRINGS MD
500 PM EDT THU JUN 07 2001

TROPICAL DEPRESSION "ALLISON" WAS LOCATED NEAR 31.2N 95.0W...STILL
SOUTHWEST OF LUFKIN IN TEXAS.  THE SYSTEM HAS BEEN QUASI-STATIONARY
DURING THE PAST SIX HOURS...WITH LITTLE MOTION EXPECTED DURING THE
NEXT 6 HOURS.  CURRENT NUMERICAL MODEL GUIDANCE SUGGESTS THAT WEAK
STEERING CURRENTS SHOULD CAUSE ALLISON TO MEANDER SLOWLY SOUTHWESTWARD
DURING THE NEXT DAY OR SO.  THE ESTIMATED CENTRAL PRESSURE IS ABOUT
1007 MB...OR 29.74 INCHES.  MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE
LIGHT...  BETWEEN 10 AND 15 MPH.

SOME SEVERE THUNDERSTORM WARNINGS HAVE BEEN ISSUED THIS
AFTERNOON IN EAST CENTRAL MISSISSIPPI...WHILE A FEW TORNADO WARNINGS HAVE BEEN
POSTED AS WELL...ONE IN SOUTHWEST MISSISSIPPI...AND SEVERAL IN
LOUISIANA.  A FUNNEL CLOUD WAS SIGHED BETWEEN BAKER AND CENTRAL...IN LOUISIANA. 
HOWEVER...THE MAIN THREAT FROM THIS SYSTEM HAS BEEN HEAVY RAIN.

FLASH FLOOD WATCHES OR WARNINGS WERE POSTED FOR MUCH OF EAST
TEXAS...EXTREME SOUTHERN ARKANSAS...THE SOUTHERN 2/3RDS OF
MISSISSIPPI...AND ALL OF LOUISIANA.  RIVER FLOOD WARNINGS ARE IN EFFECT
FOR EAST CENTRAL AND SOUTHEAST TEXAS....AS WELL AS SOUTHEAST LOUISIANA.

FLASH FLOOD WARNINGS ARE IN EFFECT FOR MANY OF THE RIVERS AND
BAYOUS IN EASTERN LOUISIANA AND EXTREME SOUTHERN MISSISSIPPI. DOPPLER RADAR
ESTIMATES THAT SINCE EARLY THIS MORNING RAINFALL MAXIMA EXCEEDING
SIX INCHES HAVE OCCURRED INLAND OF THE MIDDLE TEXAS COAST...AND IN A
SWATH FROM BATON ROUGE NORTH INTO EXTREME SOUTHWESTERN MISSISSIPPI. 
ADDITIONAL RAINS OF TWO TO FOUR INCHES...WITH ISOLATED HIGHER
AMOUNTS...CAN BE EXPECTED ACROSS SOUTHEAST TEXAS AND SOUTHEAST
LOUISIANA.

SELECTED 30-HOUR RAINFALL AMOUNTS INCLUDE:

TEXAS (THROUGH 1 PM CDT, IN INCHES)

BEAUMONT/PORT ARTHUR..........4.14
LUFKIN AIRPORT................1.90
NACOGDOCHES...................1.23

LOUISIANA (THROUGH 7 AM CDT IN INCHES)

BATON ROUGE...................9.52
LAFAYETTE.....................7.25
PATTERSON.....................6.80
SALT POINT....................4.09

MISSISSIPPI (THROUGH 7 AM CDT IN INCHES)

MCCOMB........................3.33
NATCHEZ.......................1.51

THE NEXT STORM SUMMARY WILL BE ISSUED AT 11 PM EDT.

MCELROY/ FORECAST OPERATIONS BRANCH