Hurricane KATRINA

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HURRICANE KATRINA INTERMEDIATE ADVISORY NUMBER  26A...CORRECTED
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
6 AM CDT MON AUG 29 2005

CORRECTED TIMES TO 6 AM CDT
 
...EXTREMELY DANGEROUS CATEGORY FOUR HURRICANE KATRINA PREPARING 
   TO MOVE ONSHORE NEAR SOUTHERN PLAQUEMINES PARISH LOUISIANA...
...HURRICANE-FORCE WIND GUSTS OCCURRING OVER MOST OF SOUTHEASTERN
   LOUISIANA...IN THE NEW ORLEANS METROPOLITAN AREA...AND AS FAR
   EAST AS THE CHANDELEUR ISLANDS...
 
A HURRICANE WARNING IS IN EFFECT FOR THE NORTH CENTRAL GULF COAST
FROM MORGAN CITY LOUISIANA EASTWARD TO THE ALABAMA/FLORIDA
BORDER...INCLUDING THE CITY OF NEW ORLEANS AND LAKE PONTCHARTRAIN.
PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD HAVE BEEN
COMPLETED.
 
A TROPICAL STORM WARNING AND A HURRICANE WATCH ARE IN EFFECT FROM
EAST OF THE ALABAMA/FLORIDA BORDER TO DESTIN FLORIDA...AND FROM
WEST OF MORGAN CITY TO INTRACOASTAL CITY LOUISIANA.
 
A TROPICAL STORM WARNING IS ALSO IN EFFECT FROM DESTIN FLORIDA
EASTWARD TO INDIAN PASS FLORIDA...AND FROM INTRACOASTAL CITY
LOUISIANA WESTWARD TO CAMERON LOUISIANA.
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED
BY YOUR LOCAL WEATHER OFFICE.
 
AT 6 AM CDT...1100Z...THE CENTER OF MAJOR HURRICANE KATRINA WAS
LOCATED NEAR LATITUDE 29.1 NORTH... LONGITUDE 89.6 WEST OR ABOUT
MIDWAY BETWEEN GRAND ISLE AND THE MOUTH OF THE MISSISSIPPI RIVER.
THIS IS ALSO ABOUT 70 MILES SOUTH-SOUTHEAST OF NEW ORLEANS
LOUISIANA AND ABOUT 95 MILES SOUTH-SOUTHWEST OF BILOXI MISSISSIPPI.
 
KATRINA IS MOVING TOWARD THE NORTH NEAR 15 MPH... AND THIS
MOTION IS FORECAST TO CONTINUE TODAY. A GRADUAL TURN TOWARD THE
NORTH-NORTHEAST AT A SLIGHTLY FASTER FORWARD SPEED IS EXPECTED
LATER TONIGHT AND ON TUESDAY. ON THE FORECAST TRACK...KATRINA WILL
MOVE ONSHORE THE SOUTHERN COAST OF PLAQUEMINES PARISH NEAR EMPIRE
AND BURAS LOUSIANA WITHIN THE ENXT HOUR...AND REACH THE
LOUISIANA-MISSISSIPPI BORDER AREA BY EARLY AFTERNOON. CONDITIONS
WILL CONTINUE TO STEADILY DETERIORATE OVER CENTRAL AND SOUTHEASTERN
LOUISIANA...SOUTHERN MISSISSIPPI...AND SOUTHERN ALABAMA THROUGHOUT
THE DAY.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 145 MPH...WITH HIGHER
GUSTS. KATRINA IS A STRONG CATEGORY FOUR HURRICANE ON THE
SAFFIR-SIMPSON SCALE. SOME FLUCTUATIONS IN STRENGTH ARE LIKELY
PRIOR TO LANDFALL...BUT KATRINA IS EXPECTED TO MAKE LANDFALL AS
A CATEGORY FOUR HURRICANE. WINDS AFFECTING THE UPPER FLOORS OF
HIGH-RISE BUILDINGS WILL BE SIGNIFICANTLY STRONGER THAN THOSE NEAR
GROUND LEVEL.
 
KATRINA REMAINS A VERY LARGE HURRICANE. HURRICANE FORCE WINDS EXTEND
OUTWARD UP TO 120 MILES FROM THE CENTER...AND TROPICAL STORM FORCE
WINDS EXTEND OUTWARD UP TO 230 MILES.  DURING THE PAST HOUR...A
SUSTAINED WIND OF 56 MPH WITH A GUST TO 85 MPH WAS REPORTED AT NEW
ORLEANS LAKEFRONT AIRPORT...AND A SUSTAINED WIND OF 74 MPH WITH A
GUST TO 96 MPH WAS REPORTED AT THE NAVAL AIR STATION IN BELLE
CHASSE LOUISIANA.
 
THE MINIMUM CENTRAL PRESSURE RECENTLY REPORTED BY AN AIR FORCE
RESERVE UNIT RECONNAISSANCE AIRCRAFT WAS  918 MB...27.11 INCHES.
 
COASTAL STORM SURGE FLOODING OF 18 TO 22 FEET ABOVE NORMAL TIDE
LEVELS...LOCALLY AS HIGH AS 28 FEET...ALONG WITH LARGE AND DANGEROUS
BATTERING WAVES...CAN BE EXPECTED NEAR AND TO THE EAST OF WHERE THE
CENTER MAKES LANDFALL.  SOME LEVEES IN THE GREATER NEW ORLEANS AREA
COULD BE OVERTOPPED.  SIGNIFICANT STORM SURGE FLOODING WILL OCCUR
ELSEWHERE ALONG THE CENTRAL AND NORTHEASTERN GULF OF MEXICO COAST.
NOAA BUOY 42040 LOCATED ABOUT 50 MILES EAST OF THE MOUTH OF THE
MISSISSIPPI RIVER RECENTLY REPORTED WAVES HEIGHTS OF AT LEAST 47
FEET.
 
RAINFALL TOTALS OF 5 TO 10 INCHES...WITH ISOLATED MAXIMUM AMOUNTS OF
15 INCHES...ARE POSSIBLE ALONG THE PATH OF KATRINA ACROSS THE GULF
COAST AND THE TENNESSEE VALLEY.  RAINFALL TOTALS OF 4 TO 8 INCHES
ARE POSSIBLE ACROSS THE OHIO VALLEY INTO THE EASTERN GREAT LAKES
REGION TUESDAY AND WEDNESDAY.
 
SCATTERED TORNADOES WILL BE POSSIBLE TODAY OVER SOUTHEASTERN
LOUISIANA... SOUTHERN MISSISSIPPI...SOUTHERN ALABAMA...AND OVER
THE FLORIDA PANHANDLE.
 
REPEATING THE 6 AM CDT POSITION...29.1 N... 89.6 W.  MOVEMENT
TOWARD...NORTH NEAR 15 MPH.  MAXIMUM SUSTAINED
WINDS...145 MPH.  MINIMUM CENTRAL PRESSURE... 918 MB.
 
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL
HURRICANE CENTER AT 8 AM CDT FOLLOWED BY THE NEXT
COMPLETE ADVISORY AT 10 AM CDT.
 
FORECASTER STEWART
 
 
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