000
FZNT24 KNHC 202118
OFFNT4

OFFSHORE WATERS FORECAST FOR THE GULF OF MEXICO 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
430 PM CDT MON APR 20 2009

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.

GMZ089-210330-
SYNOPSIS FOR THE GULF OF MEXICO
430 PM CDT MON APR 20 2009

.SYNOPSIS...COLD FRONT FROM 30N84W TO 18N93W REACH FROM TAMPA 
BAY TO NE YUCATAN PENINSULA LATE TONIGHT AND MOVE SE OF AREA 
TUE.  HIGH PRES BUILDS ALONG 27N AND DRIFT E OVER FLORIDA FRI 
AND SAT INCREASING S FLOW OVER WATERS W OF 90W.

$$
GMZ080-210330-
NW GULF N OF 25N W OF 90W
INCLUDING FLOWER GARDEN BANKS NATIONAL MARINE SANCTUARY 
430 PM CDT MON APR 20 2009

.TONIGHT...NW TO N WINDS 10 TO 15 KT DIMINISH TO 5 KT W OF 95W 
LATE. SEAS 5 FT SUBSIDE TO 3 FT W OF 95W LATE.
.TUE AND TUE NIGHT...S WINDS 5 TO 10 KT BECOMING SW TO W LATE 
TUE NIGHT. SEAS 1 FT. 
.WED AND WED NIGHT...W OF 95W S WINDS 10 TO 15 KT. SEAS 4 FT.
E OF 95W S TO SW WINDS 10 KT OR LESS. SEAS 2 FT.
.THU THROUGH SAT...SE TO S WINDS 10 TO 15 KT INCREASE TO 20 KT W 
OF 95W. SEAS 4 FT BUILD TO 7 FT FRI AND SAT.

$$
GMZ082-210330-
SW GULF S OF 25N W OF 90W
430 PM CDT MON APR 20 2009

.TONIGHT...E OF 95W N WINDS 15 TO 20 KT. SEAS 6 FT. 
E OF 95W NE WIND 5 KT. SEAS 2 FT. 
.TUE...NE TO E WINDS 10 TO 15 KT. SEAS SUBSIDE TO 3 FT.
.TUE NIGHT THROUGH WED NIGHT...E TO SE WINDS 10 TO 15 KT. 
SEAS 4 FT. 
.THU THROUGH SAT...E TO SE WINDS 15 TO 20 KT INCREASE TO 25 KT 
FRI NIGHT AND SAT. SEAS 7 FT.

$$
GMZ084-210330-
MIDDLE GULF BETWEEN 85W AND 90W
430 PM CDT MON APR 20 2009

.TONIGHT...W OF FRONT NW TO N WINDS 15 KT DIMINISH TO 10 KT 
LATE. SEAS 6 FT. E OF FRONT SW 10 KT. SEAS 3 FT. SCATTERED 
TSTMS ALONG FRONT.
.TUE THROUGH WED NIGHT...N OF 25N NW TO N WINDS 10 KT. SEAS 
3 FT. S OF 25N N TO NE WINDS 10 TO 15 KT. SEAS 4 FT.
.THU THROUGH SAT...N OF 25N E TO SE WINDS 10 KT. SEAS 2 FT.
S OF 25N E WINDS 15 TO 20 KT. SEAS 6 FT. 

$$
GMZ086-210330-
E GULF BETWEEN 81W AND 85W
430 PM CDT MON APR 20 2009

.TONIGHT...SW WINDS 10 KT BECOME NW 15 KT BEHIND FRONT. SEAS 3 
FT. SCATTERED TSTMS ALONG FRONT.
.TUE AND TUE NIGHT...N WINDS 10 KT. SEAS 3 FT. 
.WED AND WED NIGHT...N OF 27N W TO NW WINDS 5 TO 10 KT. SEAS 2 
FT. S OF 27N N TO NE WINDS 10 TO 15 KT. SEAS 4 FT. 
.THU THROUGH SAT...N OF 27N NW WINDS 5 TO 10 KT BECOME E WINDS 
10 KT FRI AND SAT. SEAS 2 FT. S OF 27N NE TO E WINDS 15 TO 20 KT 
BECOME E TO 25 KT STRAITS OF FLORIDA LATE FRI AND SAT. SEAS 6 FT 
EXCEPT TO 9 FT STRAITS OF FLORIDA SAT. 

$$
FORECASTER WALLY BARNES