000
FZNT25 KNHC 250931
OFFN04

NAVTEX MARINE FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
531 AM EDT SAT AUG 25 2012

...PLEASE REFER TO COASTAL WATERS FORECASTS (CWF) AVAILABLE
THROUGH NOAA WEATHER RADIO AND OTHER MEANS FOR DETAILED
COASTAL WATERS FORECASTS...

SOUTHEAST GULF OF MEXICO

.SYNOPSIS...AN E TO W RIDGE EXTENDS ACROSS THE NORTHERN GULF.
THE PRES GRADIENT BETWEEN THE RIDGE AND TROPICAL STORM ISAAC IN
THE NORTH CENTRAL CARIBBEAN WILL TIGHTEN THIS WEEKEND. TROPICAL
STORM ISAAC CURRENTLY SE OF THE GULF IN THE CARIBBEAN SEA IS
FORECAST TO MOVE ALONG THE N CENTRAL COAST OF CUBA TO NEAR 22.2N
77.6W BY LATE TONIGHT WHILE STRENGTHENING. IT IS FORECAST TO
INTENSIFY INTO A HURRICANE AT 65 KT GUSTS 80 KT NEAR 23.8N 80.0W
BY SUN AFTERNOON...NEAR 25.0N 81.8W AT 70 KT GUSTS TO 85 KT BY
LATE SUN NIGHT...TO NEAR 27.7N 84.9W AT 80 KT GUSTS 100 KT BY
LATE SUN NIGHT...TO NEAR 30.5N 86.0W AT 70 KT GUSTS TO 85 KT
LATE TUE NIGHT AND MOVE INLAND THE FLORIDA PANHANDLE LATE TUE
NIGHT INTO WED. 

.TODAY...NE WINDS 25 TO 30 KT...BECOMING NE TO E 20 TO 25 KT IN
THE AFTERNOON. SEAS 6 TO 9 FT. SCATTERED SHOWERS AND ISOLATED
TSTMS. 
.TONIGHT...NE TO E WINDS 20 TO 25 KT...INCREASING TO 25 TO 30 KT
AFTER MIDNIGHT. SEAS 7 TO 10 FT. SCATTERED SHOWERS AND ISOLATED
TSTMS. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. NE WINDS 30 TO
35 KT...BECOMING N TO NE 40 TO 45 KT IN THE AFTERNOON. SEAS
8 FT...BUILDING TO 11 FT IN THE AFTERNOON. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N WINDS 45 TO
50 KT. SEAS 14 TO 19 FT. 
.MON...HURRICANE CONDITIONS POSSIBLE. NW WINDS 45 TO 50 KT. SEAS
15 TO 20 FT. 
.MON NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED...S TO SW WINDS 20 TO 25 KT...BECOMING SW 25 TO 30 KT IN
THE AFTERNOON. SEAS 8 TO 11 FT. 

WITHIN 200 NM EAST OF THE COAST OF FLORIDA

.SYNOPSIS...TROPICAL STORM ISAAC IN THE CARIBBEAN SEA NEAR 18.1N
72.7W 992 MB AT 5 AM EDT MOVING NW AT 10 KT. MAXIMUM SUSTAINED
WINDS 55 KT GUSTS 65 KT. ISAAC WILL MOVE ACROSS THE WINDWARD
PASSAGE THIS MORNING AND INLAND EASTERN CUBA NEAR 20.4N 75.0W
THIS AFTERNOON. ISAAC WILL THEN STRENGTHEN AS IT MOVES TO NEAR
22.2N 77.6W BY LATE TONIGHT...AND CONTINUE ACROSS THE STRAITS OF
FLORIDA INTENSIFYING INTO A HURRICANE NEAR 23.8N 80.0W BY SUN
AFTERNOON AND TO NEAR 25.0N 81.8W BY LATE SUN NIGHT. A RIDGE WILL
BUILD ALONG 28N MON THROUGH WED.

...TROPICAL STORM WARNING...

.TODAY...S OF 27N...NE TO E WINDS 25 TO 30 KT. N OF 27N...NE
WINDS 20 TO 25 KT...BECOMING NE TO E 15 TO 20 KT IN THE
AFTERNOON. SEAS 7 TO 10 FT. SCATTERED SHOWERS AND ISOLATED
TSTMS. 
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. S OF 27N...NE
WINDS 30 TO 35 KT...INCREASING TO 45 TO 50 KT AFTER MIDNIGHT...
SEAS 12 FT...BUILDING TO 16 FT AFTER MIDNIGHT. N OF 27N...NE TO
E WINDS 15 TO 20 KT...INCREASING TO 20 TO 25 KT AFTER
MIDNIGHT. SEAS 7 TO 10 FT. SCATTERED SHOWERS AND ISOLATED
TSTMS. 
.SUN...TROPICAL STORM CONDITIONS EXPECTED. S OF 27N...NE TO E
WINDS 55 TO 60 KT...BECOMING E TO SE 45 TO 50 KT IN THE
AFTERNOON. SEAS 14 TO 19 FT. N OF 27N...NE TO E WINDS 20 TO
25 KT...BECOMING E 25 TO 30 KT IN THE AFTERNOON. SEAS 9 FT...
BUILDING TO 11 FT IN THE AFTERNOON. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S OF 27N...SE
WINDS 45 TO 50 KT...BECOMING SE TO S 40 TO 45 KT AFTER MIDNIGHT.
N OF 27N...E WINDS 30 TO 35 KT. SEAS 12 TO 17 FT S OF 27N...AND
9 TO 14 FT N OF 27N. 
.MON...SE WINDS 25 TO 30 KT. SEAS 9 TO 14 FT. 
.MON NIGHT...SE TO S WINDS 20 TO 25 KT. S OF 27N...SEAS 9 FT...
SUBSIDING TO 7 FT AFTER MIDNIGHT. N OF 27N...SEAS 8 TO 13 FT. 
.TUE...SE TO S WINDS 15 TO 20 KT. SEAS 6 TO 8 FT S OF 27N...AND
8 TO 11 FT N OF 27N. 
.TUE NIGHT...S OF 27N...SE TO S WINDS 15 TO 20 KT. N OF 27N...SE
TO S WINDS 20 TO 25 KT...BECOMING S 15 TO 20 KT AFTER MIDNIGHT.
SEAS 4 TO 6 FT S OF 27N...AND 7 TO 10 FT N OF 27N. 
.WED...S OF 27N...S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. N OF
27N...S WINDS 15 TO 20 KT. SEAS 6 TO 9 FT.