Hurricane Isaac

Forecast Advisory 24

---

184
WTNT24 KNHC 270244
TCMAT4

TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER 24
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092012
0300 UTC MON AUG 27 2012

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...

THE TROPICAL STORM WARNING ALONG THE EAST COAST OF FLORIDA HAS BEEN
DISCONTINUED NORTH OF JUPITER INLET.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* EAST OF MORGAN CITY LOUISIANA TO DESTIN FLORIDA...INCLUDING
METROPOLITAN NEW ORLEANS...LAKE PONTCHARTRAIN...AND LAKE MAUREPAS

A HURRICANE WATCH IS IN EFFECT FOR...
* EAST OF DESTIN TO INDIAN PASS FLORIDA

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* THE FLORIDA PENINSULA FROM JUPITER INLET SOUTHWARD ON THE
EAST COAST AND FROM TARPON SPRINGS SOUTHWARD ON THE WEST COAST.
* FLORIDA KEYS...INCLUDING THE DRY TORTUGAS AND FLORIDA BAY
* LAKE OKEECHOBEE
* EAST OF DESTIN FLORIDA TO THE SUWANNEE RIVER

A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. A WARNING IS TYPICALLY ISSUED
36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF
TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE
PREPARATIONS DIFFICULT OR DANGEROUS. PREPARATIONS TO PROTECT LIFE
AND PROPERTY SHOULD BE RUSHED TO COMPLETION.

A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
WITHIN THE WATCH AREA. A WATCH IS TYPICALLY ISSUED 48 HOURS
BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE
WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR
DANGEROUS.

A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.

WATCHES OR WARNINGS MAY BE EXTENDED WESTWARD ALONG THE COAST OF
LOUISIANA EARLY MONDAY.

TROPICAL STORM CENTER LOCATED NEAR 24.2N 82.9W AT 27/0300Z
POSITION ACCURATE WITHIN 25 NM

PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 12 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 993 MB
MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT.
50 KT....... 60NE 0SE 0SW 60NW.
34 KT.......180NE 120SE 80SW 180NW.
12 FT SEAS..200NE 200SE 150SW 150NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 24.2N 82.9W AT 27/0300Z
AT 27/0000Z CENTER WAS LOCATED NEAR 24.0N 82.5W

FORECAST VALID 27/1200Z 25.2N 84.8W
MAX WIND 60 KT...GUSTS 75 KT.
50 KT... 60NE 0SE 0SW 60NW.
34 KT...180NE 120SE 80SW 180NW.

FORECAST VALID 28/0000Z 26.5N 86.7W
MAX WIND 70 KT...GUSTS 85 KT.
64 KT... 20NE 20SE 0SW 20NW.
50 KT... 60NE 60SE 30SW 60NW.
34 KT...180NE 120SE 80SW 180NW.

FORECAST VALID 28/1200Z 27.9N 88.3W
MAX WIND 80 KT...GUSTS 100 KT.
64 KT... 30NE 20SE 10SW 20NW.
50 KT... 60NE 60SE 40SW 50NW.
34 KT...180NE 150SE 80SW 160NW.

FORECAST VALID 29/0000Z 28.9N 89.3W
MAX WIND 85 KT...GUSTS 105 KT.
50 KT... 70NE 60SE 50SW 60NW.
34 KT...180NE 150SE 90SW 160NW.

FORECAST VALID 30/0000Z 30.6N 90.3W...INLAND
MAX WIND 70 KT...GUSTS 85 KT.
50 KT... 50NE 60SE 60SW 40NW.
34 KT...100NE 150SE 100SW 90NW.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 175 NM
ON DAY 4 AND 225 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY

OUTLOOK VALID 31/0000Z 33.0N 91.0W...INLAND
MAX WIND 30 KT...GUSTS 40 KT.

OUTLOOK VALID 01/0000Z 36.0N 91.0W...INLAND
MAX WIND 20 KT...GUSTS 30 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 24.2N 82.9W

NEXT ADVISORY AT 27/0900Z

$$
FORECASTER BROWN