Hurricane Isaac
Forecast Advisory 25
676
WTNT24 KNHC 270850
TCMAT4
TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER 25
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092012
0900 UTC MON AUG 27 2012
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
A TROPICAL STORM WARNING HAS BEEN ISSUED FROM INTRACOASTAL CITY TO
MORGAN CITY LOUISIANA.
A HURRICANE WATCH HAS BEEN ISSUED FROM INTRACOASTAL CITY TO MORGAN
CITY LOUISIANA.
A TROPICAL STORM WATCH HAS BEEN ISSUED FROM EAST OF SABINE PASS TO
WEST OF INTRACOASTAL CITY LOUISIANA.
THE HURRICANE WATCH FOR THE FLORIDA PANHANDLE FROM EAST OF DESTIN
TO INDIAN PASS HAS BEEN DISCONTINUED.
THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED ALONG THE EAST
COAST OF FLORIDA NORTH OF OCEAN REEF AND FOR LAKE OKEECHOBEE.
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...
* INTRACOASTAL CITY TO MORGAN CITY LOUISIANA
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* THE FLORIDA PENINSULA FROM OCEAN REEF SOUTHWARD ON THE EAST COAST
AND FROM TARPON SPRINGS SOUTHWARD ON THE WEST COAST
* FLORIDA KEYS...INCLUDING THE DRY TORTUGAS AND FLORIDA BAY
* EAST OF DESTIN FLORIDA TO THE SUWANNEE RIVER
* INTRACOASTAL CITY TO MORGAN CITY LOUISIANA
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* EAST OF SABINE PASS TO WEST OF INTRACOASTAL CITY LOUISIANA
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.
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.
TROPICAL STORM CENTER LOCATED NEAR 25.2N 84.2W AT 27/0900Z
POSITION ACCURATE WITHIN 25 NM
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 12 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 990 MB
MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT.
50 KT....... 50NE 0SE 0SW 50NW.
34 KT.......210NE 210SE 80SW 180NW.
12 FT SEAS..200NE 200SE 180SW 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 25.2N 84.2W AT 27/0900Z
AT 27/0600Z CENTER WAS LOCATED NEAR 24.9N 83.7W
FORECAST VALID 27/1800Z 26.2N 85.9W
MAX WIND 60 KT...GUSTS 75 KT.
50 KT... 60NE 0SE 0SW 60NW.
34 KT...180NE 180SE 80SW 180NW.
FORECAST VALID 28/0600Z 27.6N 87.8W
MAX WIND 70 KT...GUSTS 85 KT.
64 KT... 20NE 20SE 0SW 20NW.
50 KT... 60NE 60SE 30SW 60NW.
34 KT...180NE 150SE 80SW 180NW.
FORECAST VALID 28/1800Z 28.8N 89.1W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 30NE 20SE 10SW 20NW.
50 KT... 60NE 60SE 40SW 60NW.
34 KT...180NE 150SE 80SW 150NW.
FORECAST VALID 29/0600Z 29.7N 90.1W...INLAND
MAX WIND 80 KT...GUSTS 100 KT.
50 KT... 70NE 60SE 50SW 50NW.
34 KT...180NE 150SE 90SW 140NW.
FORECAST VALID 30/0600Z 31.2N 91.1W...INLAND
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 40NE 40SE 0SW 30NW.
34 KT... 90NE 150SE 60SW 60NW.
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 31/0600Z 34.0N 92.0W...INLAND
MAX WIND 30 KT...GUSTS 40 KT.
OUTLOOK VALID 01/0600Z 38.0N 91.5W...INLAND
MAX WIND 20 KT...GUSTS 30 KT.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 25.2N 84.2W
NEXT ADVISORY AT 27/1500Z
$$
FORECASTER BRENNAN
