000
FZNT24 KNHC 170915
OFFNT4

OFFSHORE WATERS FORECAST FOR THE GULF OF MEXICO 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
430 AM CDT FRI SEP 17 2010

OFFSHORE WATERS FORECAST FOR THE GULF OF MEXICO

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE 
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE 
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT. 

GMZ089-170930-
SYNOPSIS FOR THE GULF OF MEXICO
430 AM CDT FRI SEP 17 2010

.SYNOPSIS...HURRICANE KARL NEAR 19.7N 95.3 961 MB AT 500 AM CDT 
MOVING W OR 270 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 105 KT 
GUSTS 130 KT. KARL IS EXPECTED TO STRENGTHEN TO 120 KT GUSTS 145 
KT AS IT REACHES NEAR 19.7N 96.3W THIS AFTERNOON...THEN WILL 
WEAKEN AS IT MOVES INLAND TO NEAR 19.6N 97.6W LATE TONIGHT. KARL 
WILL WEAKEN TO A TROPICAL DEPRESSION BY SAT AFTERNOON AND WILL 
DISSIPATE BY LATE SUN. HIGH PRES WILL BUILD ACROSS THE GULF IN
THE WAKE OF KARL.

$$
GMZ080-170930-
NW GULF N OF 25N W OF 90W 
INCLUDING THE FLOWER GARDEN BANKS NATIONAL MARINE SANCTUARY 
430 AM CDT FRI SEP 17 2010

.TODAY THROUGH SAT NIGHT...NE TO E WINDS 15 TO 20 KT. SEAS 4 TO 
6 FT BUILDING TO 5 TO 8 FT TONIGHT THROUGH SAT NIGHT. SCATTERED 
SHOWERS AND ISOLATED TSTMS TODAY AND TONIGHT.
.SUN THROUGH TUE...E WINDS 15 KT BECOMING E TO SE MON AND TUE.
SEAS 4 TO 6 FT.

$$
GMZ082-170930-
SW GULF S OF 25N W OF 90W
430 AM CDT FRI SEP 17 2010

...HURRICANE WARNING S OF 22N W OF 93W...

.TODAY AND TONIGHT...HURRICANE AND TROPICAL STORM FORCE WINDS 
WITHIN 90 NM N AND 70 NM S SEMICIRCLES OF CENTER OF KARL. 
HIGHEST WINDS 105 KT GUSTS 130 KT INCREASING TO 120 KT GUSTS 145 
KT IN THE AFTERNOON. SEAS 12 FT OR GREATER WITHIN 180 NM NE...60 
NM SE...75 NM SW...AND 150 NM NW WITH HIGHEST SEAS 24 FT 
BUILDING TO 27 FT PRIOR TO LANDFALL. ELSEWHERE WITHIN 240 NM OF 
CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA   
WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. NUMEROUS SQUALLS WITHIN 150 
NM OF CENTER.
.SAT AND SAT NIGHT...W OF 94W WINDS 20 TO 33 KT...BECOMING NE TO 
E 10 TO 15 KT W OF TROUGH AND E TO SE 10 TO 15 KT E OF TROUGH 
SAT NIGHT. SEAS 8 TO 12 FT SUBSIDING TO 4 TO 7 FT SAT NIGHT. E 
OF 94W E TO SE WINDS 15 TO 20 KT BECOMING NE TO E 10 TO 15 KT 
SAT NIGHT. SEAS 5 TO 7 FT SUBSIDING TO 3 TO 5 FT SAT NIGHT.
.SUN...E TO SE WINDS 10 TO 15 KT EXCEPT N TO NE 15 KT NEAR 
YUCATAN COAST DURING THE EVENING...AND EXCEPT VARIABLE 5 TO 10 
KT W OF TROUGH THROUGHOUT. SEAS 3 TO 5 FT.
.MON AND TUE...N OF 21N E TO SE WINDS 15 KT. SEAS 4 TO 6 FT. S 
OF 21N VARIABLE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT IN NE SWELL.

$$
GMZ084-170930-
MIDDLE GULF BETWEEN 85W AND 90W 
430 AM CDT FRI SEP 17 2010

.TODAY AND TONIGHT...E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
.SAT THROUGH TUE...NE TO E WINDS 15 KT BECOMING E TO SE 15 TO 20 
KT TUE. SEAS 4 TO 6 FT BUILDING TO 5 TO 7 FT TUE.

$$
GMZ086-170930-
E GULF BETWEEN 81W AND 85W
430 AM CDT FRI SEP 17 2010

.TODAY AND TONIGHT...E WINDS 15 KT. SEAS 3 TO 5 FT. 
.SAT THROUGH TUE...NE TO E WINDS 15 TO 20 KT EXCEPT 20 TO 25 KT 
STRAITS OF FLORIDA MON AND TUE. SEAS 4 TO 6 FT EXCEPT TO 8 FT 
STRAITS OF FLORIDA MON AND TUE.

$$
FORECASTER LEWITSKY