Hurricane Isaac
Forecast Advisory 18
814
WTNT24 KNHC 251450
TCMAT4
TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER 18
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092012
1500 UTC SAT AUG 25 2012
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
THE TROPICAL STORM WARNING HAS BEEN EXTENDED NORTHWARD ALONG THE
FLORIDA EAST COAST TO SEBASTIEN INLET.
A TROPICAL STORM WATCH HAS BEEN ISSUED ALONG THE FLORIDA EAST COAST
NORTH OF SEBASTIEN INLET TO FLAGLER BEACH.
A TROPICAL STORM WATCH HAS BEEN ISSUED FOR THE FLORIDA WEST COAST
NORTH OF BONITA BEACH TO TARPON SPRINGS.
THE GOVERNMENT OF JAMAICA HAS DISCONTINUED THE TROPICAL STORM WATCH
FOR JAMAICA.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A HURRICANE WARNING IS IN EFFECT FOR...
* THE FLORIDA KEYS INCLUDING THE DRY TORTUGAS
* THE WEST COAST OF FLORIDA FROM BONITA BEACH SOUTHWARD
* FLORIDA BAY
A HURRICANE WATCH IS IN EFFECT FOR...
* HAITI
* THE FLORIDA EAST COAST FROM GOLDEN BEACH SOUTHWARD
* ANDROS ISLAND IN THE BAHAMAS
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* DOMINICAN REPUBLIC
* HAITI
* CUBAN PROVINCES OF CIEGO DE AVILA...SANCTI SPIRITUS...VILLA
CLARA...CAMAGUEY...LAS TUNAS...GRANMA...HOLGUIN...SANTIAGO DE
CUBA...AND GUANTANAMO
* THE BAHAMAS
* TURKS AND CAICOS ISLANDS
* THE FLORIDA EAST COAST FROM SEBASTIEN INLET SOUTHWARD
* LAKE OKEECHOBEE
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* CUBAN PROVINCES OF MATANZAS AND CIENFUEGOS
* THE FLORIDA EAST COAST NORTH OF SEBASTIAN INLET TO FLAGLER BEACH
* THE FLORIDA WEST COAST NORTH OF BONITA BEACH TO TARPON SPRINGS
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...IN THIS CASE WITHIN THE NEXT 24 TO 36 HOURS.
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.
INTERESTS IN THE REMAINDER OF CUBA AND THE REMAINDER OF FLORIDA
SHOULD MONITOR THE PROGRESS OF ISAAC.
TROPICAL STORM CENTER LOCATED NEAR 20.1N 74.6W AT 25/1500Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 315 DEGREES AT 15 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 998 MB
MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT.
50 KT....... 60NE 0SE 0SW 0NW.
34 KT.......180NE 90SE 60SW 180NW.
12 FT SEAS..380NE 180SE 45SW 450NW.
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 20.1N 74.6W AT 25/1500Z
AT 25/1200Z CENTER WAS LOCATED NEAR 19.7N 73.7W
FORECAST VALID 26/0000Z 21.7N 76.4W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 60NE 0SE 0SW 0NW.
34 KT...180NE 90SE 60SW 180NW.
FORECAST VALID 26/1200Z 23.3N 79.0W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 60NE 0SE 0SW 30NW.
34 KT...180NE 90SE 60SW 180NW.
FORECAST VALID 27/0000Z 24.7N 81.3W
MAX WIND 65 KT...GUSTS 80 KT.
64 KT... 30NE 0SE 0SW 0NW.
50 KT... 60NE 40SE 20SW 50NW.
34 KT...180NE 100SE 80SW 160NW.
FORECAST VALID 27/1200Z 25.9N 83.1W
MAX WIND 75 KT...GUSTS 90 KT.
50 KT... 70NE 50SE 30SW 60NW.
34 KT...180NE 110SE 90SW 150NW.
FORECAST VALID 28/1200Z 28.5N 85.5W
MAX WIND 85 KT...GUSTS 105 KT.
50 KT... 80NE 60SE 50SW 70NW.
34 KT...180NE 130SE 110SW 140NW.
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 29/1200Z 31.5N 86.5W...INLAND
MAX WIND 65 KT...GUSTS 80 KT.
OUTLOOK VALID 30/1200Z 33.0N 86.0W...INLAND
MAX WIND 30 KT...GUSTS 40 KT.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.1N 74.6W
NEXT ADVISORY AT 25/2100Z
$$
FORECASTER BEVEN
421
WTNT24 KNHC 251454
TCMAT4
TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER 18
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092012
1500 UTC SAT AUG 25 2012
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
THE TROPICAL STORM WARNING HAS BEEN EXTENDED NORTHWARD ALONG THE
FLORIDA EAST COAST TO SEBASTIAN INLET.
A TROPICAL STORM WATCH HAS BEEN ISSUED ALONG THE FLORIDA EAST COAST
NORTH OF SEBASTIAN INLET TO FLAGLER BEACH.
A TROPICAL STORM WATCH HAS BEEN ISSUED FOR THE FLORIDA WEST COAST
NORTH OF BONITA BEACH TO TARPON SPRINGS.
THE GOVERNMENT OF JAMAICA HAS DISCONTINUED THE TROPICAL STORM WATCH
FOR JAMAICA.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A HURRICANE WARNING IS IN EFFECT FOR...
* THE FLORIDA KEYS INCLUDING THE DRY TORTUGAS
* THE WEST COAST OF FLORIDA FROM BONITA BEACH SOUTHWARD TO OCEAN
REEF
* FLORIDA BAY
A HURRICANE WATCH IS IN EFFECT FOR...
* HAITI
* THE FLORIDA EAST COAST FROM GOLDEN BEACH SOUTHWARD TO OCEAN REEF
* ANDROS ISLAND IN THE BAHAMAS
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* DOMINICAN REPUBLIC
* HAITI
* CUBAN PROVINCES OF CIEGO DE AVILA...SANCTI SPIRITUS...VILLA
CLARA...CAMAGUEY...LAS TUNAS...GRANMA...HOLGUIN...SANTIAGO DE
CUBA...AND GUANTANAMO
* THE BAHAMAS
* TURKS AND CAICOS ISLANDS
* THE FLORIDA EAST COAST FROM SEBASTIAN INLET SOUTHWARD TO OCEAN
REEF
* LAKE OKEECHOBEE
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* CUBAN PROVINCES OF MATANZAS AND CIENFUEGOS
* THE FLORIDA EAST COAST NORTH OF SEBASTIAN INLET TO FLAGLER BEACH
* THE FLORIDA WEST COAST NORTH OF BONITA BEACH TO TARPON SPRINGS
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...IN THIS CASE WITHIN THE NEXT 24 TO 36 HOURS.
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.
INTERESTS IN THE REMAINDER OF CUBA AND THE REMAINDER OF FLORIDA
SHOULD MONITOR THE PROGRESS OF ISAAC.
TROPICAL STORM CENTER LOCATED NEAR 20.1N 74.6W AT 25/1500Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 315 DEGREES AT 15 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 998 MB
MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT.
50 KT....... 60NE 0SE 0SW 0NW.
34 KT.......180NE 90SE 60SW 180NW.
12 FT SEAS..380NE 180SE 45SW 450NW.
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 20.1N 74.6W AT 25/1500Z
AT 25/1200Z CENTER WAS LOCATED NEAR 19.7N 73.7W
FORECAST VALID 26/0000Z 21.7N 76.4W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 60NE 0SE 0SW 0NW.
34 KT...180NE 90SE 60SW 180NW.
FORECAST VALID 26/1200Z 23.3N 79.0W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 60NE 0SE 0SW 30NW.
34 KT...180NE 90SE 60SW 180NW.
FORECAST VALID 27/0000Z 24.7N 81.3W
MAX WIND 65 KT...GUSTS 80 KT.
64 KT... 30NE 0SE 0SW 0NW.
50 KT... 60NE 40SE 20SW 50NW.
34 KT...180NE 100SE 80SW 160NW.
FORECAST VALID 27/1200Z 25.9N 83.1W
MAX WIND 75 KT...GUSTS 90 KT.
50 KT... 70NE 50SE 30SW 60NW.
34 KT...180NE 110SE 90SW 150NW.
FORECAST VALID 28/1200Z 28.5N 85.5W
MAX WIND 85 KT...GUSTS 105 KT.
50 KT... 80NE 60SE 50SW 70NW.
34 KT...180NE 130SE 110SW 140NW.
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 29/1200Z 31.5N 86.5W...INLAND
MAX WIND 65 KT...GUSTS 80 KT.
OUTLOOK VALID 30/1200Z 33.0N 86.0W...INLAND
MAX WIND 30 KT...GUSTS 40 KT.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.1N 74.6W
NEXT ADVISORY AT 25/2100Z
$$
FORECASTER BEVEN
