000
FZNT24 KNHC 172048
OFFNT4

OFFSHORE WATERS FORECAST FOR THE GULF OF MEXICO 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
430 PM 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. 

GMZ089-172130-
SYNOPSIS FOR THE GULF OF MEXICO
430 PM CDT FRI SEP 17 2010

.SYNOPSIS...HURRICANE KARL NEAR 19.1N 96.6W AT 400 PM CDT MOVING 
WSW OR 250 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 80 KT GUSTS 100 
KT. KARL WILL WEAKEN TO A TROPICAL STORM AS IT MOVES FURTHER 
INLAND TO NEAR 18.8N 97.7W LATER TONIGHT...THEN WEAKEN FURTHER 
TO A TROPICAL DEPRESSION IT MOVES TO NEAR 18.7N 99.1W SAT 
AFTERNOON. KARL DISSIPATES SUN. HIGH PRES WILL BUILD WEST 
ACROSS THE GULF IN THE WAKE OF KARL.

$$
GMZ080-172130-
NW GULF N OF 25N W OF 90W 
INCLUDING THE FLOWER GARDEN BANKS NATIONAL MARINE SANCTUARY 
430 PM CDT FRI SEP 17 2010

.TONIGHT THROUGH SAT NIGHT...E WINDS 15 TO 20 KT. SEAS 4 TO 6 FT 
BUILDING TO 5 TO 7 FT LATER TONIGHT THROUGH SAT NIGHT. SCATTERED 
SHOWERS AND TSTMS ENTIRE AREA TONIGHT AND W OF 94W SAT AND SAT 
NIGHT.
.SUN AND SUN NIGHT...E WINDS 15 KT. SEAS 4 TO 6 FT. SCATTERED 
SHOWERS OR TSTMS W OF 95W.  
.MON THROUGH WED...E TO SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.

$$
GMZ082-172130-
SW GULF S OF 25N W OF 90W
430 PM CDT FRI SEP 17 2010

...HURRICANE WARNING S OF 20N W OF 95.5W...

.TONIGHT...HURRICANE AND TROPICAL STORM FORCE WINDS WITHIN 80 NM 
OF THE CENTER OF KARL. HIGHEST WINDS 80 KT GUSTS 100 
KT...DECREASING TO 50 KT GUSTS 60 KT LATE. SEAS 12 FT OR GREATER 
WITHIN AREA OF TROPICAL STORM AND HURRICANE FORCE WINDS WITH 
HIGHEST SEAS 22 FT. ELSEWHERE WITHIN 120 NM OF CENTER WINDS 20 
TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA E TO SE WINDS 15 TO 
20 KT. SEAS 4 TO 7 FT. NUMEROUS SQUALLS WITHIN 90 NM OF 
CENTER...MOVING W OF AREA LATE.
.SAT AND SAT NIGHT...S OF 23N W OF 95W SE WINDS 20 TO 25 
KT...BECOMING VARIABLE 10 KT SAT NIGHT. SEAS 8 TO 11 FT 
SUBSIDING TO 4 TO 6 FT SAT NIGHT. ELSEWHERE E TO SE WINDS 15 TO 
20 KT. SEAS 4 TO 7 FT SUBSIDING TO 3 TO 5 FT SAT NIGHT.
.SUN AND SUN NIGHT...E TO SE WINDS 10 TO 15 KT EXCEPT N TO NE 15 
KT NEAR YUCATAN COAST DURING THE EVENING. SEAS 3 TO 5 FT.
.MON THROUGH WED...N OF 21N E TO SE WINDS 10 TO 15 KT. SEAS 4 TO 
6 FT. S OF 21N VARIABLE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT IN NE 
SWELL. WINDS NE 15 TO 20 KT NEAR YUCATAN COAST DURING THE 
EVENINGS.

$$
GMZ084-172130-
MIDDLE GULF BETWEEN 85W AND 90W 
430 PM CDT FRI SEP 17 2010

.TONIGHT AND SAT...E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. SCATTERED
SHOWERS OR TSTMS N OF 25N TONIGHT.
.SAT NIGHT THROUGH MON...NE TO E WINDS 15 KT. SEAS 4 TO 5 FT.
.TUE AND WED...E TO SE WINDS 15 TO 20 KT...DIMINISHING LATE WED.
SEAS 5 TO 7 FT.

$$
GMZ086-172130-
E GULF BETWEEN 81W AND 85W
430 PM CDT FRI SEP 17 2010

.TONIGHT AND SAT...NE TO E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. 
.SAT NIGHT THROUGH TUE...S OF 28N 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. N OF 28N 
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. 
.WED...E WINDS 15 TO 20 KT. SEAS 3 TO 5 FT...LOCALLY 7 FT 
STRAITS OF FLORIDA. 

$$
FORECASTER COBB