Hurricane KATRINA Public Advisory

 BULLETIN
HURRICANE KATRINA INTERMEDIATE ADVISORY NUMBER 24A
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
7 PM CDT SUN AUG 28 2005

...POTENTIALLY CATASTROPHIC HURRICANE KATRINA NOW MOVING
NORTH-NORTHWESTWARD TOWARD THE NORTHERN GULF COAST...

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 BE COMPLETED THIS
EVENING.KATRINA IS MOVING TOWARD THE NORTH-NORTHWEST NEAR 11 MPH...AND A
TURN TO THE NORTH IS EXPECTED OVER THE NEXT 24 HOURS. ON THIS TRACK
THE CENTER OF THE HURRICANE WILL BE NEAR THE NORTHERN GULF COAST
EARLY MONDAY. HOWEVER...CONDITIONS ARE ALREADY BEGINNING TO
DETERIORATE ALONG PORTIONS OF THE CENTRAL AND NORTHEASTERN GULF
COAST...AND WILL CONTINUE TO WORSEN THROUGH THE NIGHT.

MAXIMUM SUSTAINED WINDS ARE NEAR 160 MPH...WITH HIGHER GUSTS.
KATRINA IS A POTENTIALLY CATASTROPHIC CATEGORY FIVE HURRICANE ON
THE SAFFIR-SIMPSON SCALE. SOME FLUCTUATIONS IN STRENGTH ARE LIKELY
PRIOR TO LANDFALL...AND KATRINA IS EXPECTED TO MAKE LANDFALL AT
CATEGORY FOUR OR FIVE INTENSITY. WINDS AFFECTING THE UPPER FLOORS
OF HIGH-RISE BUILDINGS WILL BE SIGNIFICANTLY STRONGER THAN THOSE
NEAR GROUND LEVEL.

KATRINA IS A LARGE HURRICANE. HURRICANE FORCE WINDS EXTEND OUTWARD
UP TO 105 MILES FROM THE CENTER...AND TROPICAL STORM FORCE WINDS
EXTEND OUTWARD UP TO 230 MILES. SUSTAINED TROPICAL STORM FORCE
WINDS ARE ALREADY OCCURRING OVER THE SOUTHEAST LOUISIANA COAST.

A NOAA HURRICANE HUNTER PLANE REPORTED A MINIMUM CENTRAL PRESSURE OF
904 MB...26.69 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.

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.

ISOLATED TORNADOES WILL BE POSSIBLE THIS EVENING OVER SOUTHERN
PORTIONS OF LOUISIANA...MISSISSIPPI...AND ALABAMA...AND OVER THE
FLORIDA PANHANDLE.

REPEATING THE 7 PM CDT POSITION...27.2 N... 89.1 W. MOVEMENT
TOWARD...NORTH-NORTHWEST NEAR 11 MPH. MAXIMUM SUSTAINED WINDS...160
MPH. MINIMUM CENTRAL PRESSURE... 904 MB.

THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL
HURRICANE CENTER AT 10 PM CDT.

FORECASTER FRANKLIN