Hurricane Gustav Advisory 28A

BULLETIN
HURRICANE GUSTAV INTERMEDIATE ADVISORY NUMBER 28A
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL072008
100 PM CDT SUN AUG 31 2008
...GUSTAV WEAKENS A LITTLE MORE...BUT STILL A MAJOR HURRICANE...
A HURRICANE WARNING REMAINS IN EFFECT FOR THE NORTHERN GULF COAST
FROM CAMERON LOUISIANA EASTWARD TO THE ALABAMA-FLORIDA BORDER...
INCLUDING THE CITY OF NEW ORLEANS AND LAKE PONTCHARTRAIN. A
HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
WITHIN THE WARNING AREA WITHIN THE NEXT 24 HOURS. PREPARATIONS TO
PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION.
A TROPICAL STORM WARNING REMAINS IN EFFECT FROM EAST OF THE
ALABAMA-FLORIDA BORDER TO THE OCHLOCKONEE RIVER....AND FROM WEST OF
CAMERON LOUISIANA TO JUST EAST OF HIGH ISLAND TEXAS. A TROPICAL
STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED
WITHIN THE WARNING AREA WITHIN THE NEXT 24 HOURS.
A HURRICANE WATCH REMAINS IN EFFECT FROM WEST OF CAMERON LOUISIANA
TO JUST EAST OF HIGH ISLAND TEXAS. A HURRICANE WATCH MEANS THAT
HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY
WITHIN 36 HOURS.
AT 2 PM EDT...1800 UTC...THE TROPICAL STORM WARNING IS DISCONTINUED
FOR THE FLORIDA KEYS EXCEPT FOR THE DRY TORTUGAS. A TROPICAL STORM
WARNING REMAINS IN EFFECT FOR THE DRY TORTUGAS.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED
BY YOUR LOCAL WEATHER OFFICE.
AT 100 PM CDT...1800Z...THE CENTER OF HURRICANE GUSTAV WAS LOCATED
NEAR LATITUDE 25.9 NORTH...LONGITUDE 86.6 WEST OR ABOUT 270 MILES...
520 KM...SOUTHEAST OF THE MOUTH OF THE MISSISSIPPI RIVER.
GUSTAV IS MOVING TOWARD THE NORTHWEST NEAR 17 MPH...28 KM/HR. THIS
GENERAL MOTION IS EXPECTED TO CONTINUE WITH A DECREASE IN FORWARD
SPEED DURING THE NEXT COUPLE OF DAYS. ON FORECAST TRACK...GUSTAV
SHOULD MAKE LANDFALL ON THE NORTHERN GULF COAST ON MONDAY.
REPORTS FROM AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INDICATE
MAXIMUM SUSTAINED WINDS HAVE TO DECREASED TO NEAR 115 MPH...185
KM/HR...WITH HIGHER GUSTS. GUSTAV IS A CATEGORY THREE HURRICANE ON
THE SAFFIR-SIMPSON SCALE. SOME RE-INTENSIFICATION IS FORECAST
DURING THE NEXT 12 TO 24 HOURS...AND GUSTAV COULD REGAIN CATEGORY
FOUR STRENGTH LATER TODAY OR TONIGHT. FLUCTUATIONS IN STRENGTH ARE
LIKELY THEREAFTER...BUT GUSTAV IS FORECAST TO REMAIN A MAJOR
HURRICANE UNTIL LANDFALL.
GUSTAV IS A LARGE TROPICAL CYCLONE. HURRICANE FORCE WINDS EXTEND
OUTWARD UP TO 50 MILES...85 KM...FROM THE CENTER...AND TROPICAL
STORM FORCE WINDS EXTEND OUTWARD UP TO 200 MILES...325 KM. NOAA
BUOY 42003 RECENTLY REPORTED 8-MINUTE AVERAGE WINDS OF 60 MPH...
97 KM/HR...WITH A GUST TO 78 MPH...126 KM/HR.
THE MINIMUM CENTRAL PRESSURE JUST REPORTED BY AN AIR FORCE RESERVE
HURRICANE HUNTER AIRCRAFT IS 960 MB...28.35 INCHES.
AN EXTREMELY DANGEROUS STORM SURGE OF 12 TO 16 FEET ABOVE NORMAL
TIDAL LEVELS IS EXPECTED NEAR AND TO THE EAST OF WHERE THE CENTER
OF GUSTAV CROSSES THE NORTHERN GULF COAST. A STORM SURGE OF 1 TO
3 FEET ABOVE NORMAL TIDE LEVELS IS POSSIBLE IN THE DRY TORTUGAS AS
GUSTAV PASSES TO ITS WEST.
GUSTAV IS EXPECTED TO PRODUCE TOTAL RAINFALL ACCUMULATIONS OF 6 TO
12 INCHES OVER PORTION OF LOUISIANA...SOUTHERN MISSISSIPPI AND
SOUTHERN ARKANSAS...WITH ISOLATED MAXIMUM AMOUNTS OF UP TO 20
INCHES POSSIBLE THROUGH WEDNESDAY MORNING. ADDITIONAL RAINFALL
AMOUNTS OF ABOUT AN INCH ARE POSSIBLE OVER FLORIDA KEYS AND
SOUTH FLORIDA.
ISOLATED TORNADOES ARE POSSIBLE OVER THE CENTRAL GULF COAST LATER
TODAY AND TONIGHT.
REPEATING THE 100 PM CDT POSITION...25.9 N...86.6 W. MOVEMENT
TOWARD...NORTHWEST NEAR 17 MPH. MAXIMUM SUSTAINED WINDS...115 MPH.
MINIMUM CENTRAL PRESSURE...960 MB.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL
HURRICANE CENTER AT 400 PM CDT.