015
FZNT24 KNHC 211503
OFFNT4
OFFSHORE WATERS FORECAST FOR THE GULF OF AMERICA
NWS NATIONAL HURRICANE CENTER MIAMI, FL
1103 AM EDT TUE JUL 21 2026
OFFSHORE WATERS FORECAST FOR THE GULF OF AMERICA
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.
GMZ001-220315-
SYNOPSIS FOR THE GULF OF AMERICA
1103 AM EDT TUE JUL 21 2026
SYNOPSIS
TROPICAL STORM BERTHA IS NEAR 29.2N 86.2W AT 11 AM EDT, AND IS
MOVING SLOWLY NORTH-NORTHWEST AT 3 KT. MAXIMUM SUSTAINED WINDS
ARE 50 KT WITH GUSTS TO 60 KT, AND THE MINIMUM CENTRAL PRESSURE IS
996 MB. BERTHA WILL MOVE TO 29.4N 87.0W THIS EVENING, THEN WEAKEN
SLIGHTLY AS IT MOVES TO 29.5N 88.0W WED MORNING. BERTHA WILL CONTINUE
TO 29.4N 89.5W WED EVENING, THEN REACH 29.3N 91.3W BY THU
MORNING. BERTHA WILL WEAKEN TO A TROPICAL DEPRESSION NEAR 29.4N
93.1W THU EVENING OFF LOUISIANA, AND THEN MOVE INLAND NEAR THE
SABINE PASS TO 29.9N 94.9W FRI MORNING. SWELLS GENERATED BY
BERTHA ARE AFFECTING PORTIONS OF THE GULF COAST OF FLORIDA AND ARE
LIKELY TO SPREAD WESTWARD DURING THE REST OF THE WEEK. ELSEWHERE,
WEAK HIGH PRESSURE OVER THE WESTERN GULF WILL DISSIPATE BY
MIDWEEK. AFTER MIDWEEK, ATLANTIC HIGH PRESSURE WILL EXTEND
WESTWARD TO THE CENTRAL GULF FOLLOWING BERTHA.
GMZ040-220315-
NW GULF OF AMERICA INCLUDING STETSON BANK-
1103 AM EDT TUE JUL 21 2026
TODAY
SW TO W WINDS 10 KT. SEAS 3 FT OR LESS.
TONIGHT
S TO SW WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
WED
S OF 27N, SW WINDS 10 TO 15 KT IN THE MORNING, BECOMING
VARIABLE LESS THAN 5 KT. N OF 27N, SW TO W WINDS 10 TO 15 KT.
SEAS 2 TO 4 FT.
WED NIGHT
S TO SW WINDS 10 TO 15 KT S OF 27N, AND SW 15 TO
20 KT N OF 27N. SEAS 2 TO 4 FT. SCATTERED TSTMS.
THU
S TO SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
THU NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI
S WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI NIGHT
SE TO S WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
SAT
SE TO S WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
GMZ041-220315-
SW LOUISIANA OFFSHORE WATERS INCLUDING FLOWER GARDEN BANK MARINE
SANCTUARY-
1103 AM EDT TUE JUL 21 2026
TODAY
W TO NW WINDS 15 TO 20 KT. SEAS 3 TO 5 FT. ISOLATED
TSTMS.
TONIGHT
SW TO W WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.
WED
SW TO W WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
WED NIGHT
SW WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
THU
SW WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
THU NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI
SE TO S WINDS 10 KT. SEAS 2 TO 4 FT.
FRI NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
SAT
SE TO S WINDS 10 KT. SEAS 3 FT OR LESS.
GMZ056-220315-
N CENTRAL GULF OF AMERICA OFFSHORE WATERS-
1103 AM EDT TUE JUL 21 2026
..TROPICAL STORM WARNING
TODAY
TROPICAL STORM CONDITIONS. W WINDS 15 TO 20 KT W OF
89W, AND W 35 TO 45 KT E OF 89W. SEAS 7 TO 10 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
TONIGHT
TROPICAL STORM CONDITIONS EXPECTED. SW TO W WINDS
20 TO 25 KT W OF 89W, AND SW TO W 40 TO 50 KT E OF 89W. SEAS
10 TO 15 FT. SCATTERED SHOWERS AND ISOLATED TSTMS.
WED
TROPICAL STORM CONDITIONS EXPECTED. W OF 89W, SW TO W
WINDS 25 TO 30 KT. E OF 89W, SW WINDS 40 TO 45 KT, DIMINISHING TO
25 TO 30 KT IN THE AFTERNOON. SEAS 10 TO 16 FT IN W SWELL.
SCATTERED SHOWERS AND ISOLATED TSTMS.
WED NIGHT
S TO SW WINDS 20 TO 25 KT. SEAS 8 TO 12 FT IN W
SWELL.
THU
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN W TO NW SWELL.
THU NIGHT
SE TO S WINDS 10 KT. SEAS 3 TO 5 FT.
FRI
SE WINDS 10 KT. SEAS 2 TO 4 FT.
FRI NIGHT
E TO SE WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
SAT
E TO SE WINDS 10 KT. SEAS 3 FT OR LESS.
GMZ057-220315-
NE GULF OF AMERICA N OF 26N E OF 87W-
1103 AM EDT TUE JUL 21 2026
..TROPICAL STORM WARNING
TODAY
TROPICAL STORM CONDITIONS. SW WINDS 45 TO 50 KT W OF
85W, AND S TO SW 25 TO 30 KT E OF 85W. SEAS 8 TO 12 FT. SCATTERED
SHOWERS AND ISOLATED TSTMS.
TONIGHT
TROPICAL STORM CONDITIONS EXPECTED. W OF 85W, SW
WINDS 45 TO 50 KT, SHIFTING TO S TO SW 35 TO 40 KT LATE. E OF
85W, S TO SW WINDS 20 TO 25 KT. SEAS 10 TO 16 FT.
SCATTERED SHOWERS AND ISOLATED TSTMS.
WED
TROPICAL STORM CONDITIONS POSSIBLE. S TO SW WINDS 25 TO
30 KT W OF 85W, AND S 15 TO 20 KT E OF 85W. SEAS 9 TO 14 FT IN W
TO NW SWELL.
WED NIGHT
S WINDS 15 TO 20 KT. SEAS 7 TO 11 FT IN W TO NW
SWELL.
THU
SE WINDS 10 KT. SEAS 5 TO 7 FT IN W TO NW SWELL.
THU NIGHT
SE TO S WINDS 10 KT, SHIFTING TO N TO NE LATE. SEAS
3 TO 5 FT.
FRI
NE TO E WINDS 10 KT. SEAS 3 FT OR LESS.
FRI NIGHT
NE TO E WINDS 10 KT. SEAS 3 FT OR LESS.
SAT
VARIABLE WINDS LESS THAN 5 KT. SEAS 3 FT OR LESS.
GMZ058-220315-
W CENTRAL GULF OF AMERICA FROM 22N TO 26N W OF 94W-
1103 AM EDT TUE JUL 21 2026
TODAY
SE TO S WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
TONIGHT
SE TO S WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
WED
SE TO S WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
WED NIGHT
SE TO S WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
THU
SE TO S WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
THU NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
FRI
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
SAT
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
GMZ045-220315-
W CENTRAL GULF OF AMERICA FROM 22N TO 26N BETWEEN 91W AND 94W-
1103 AM EDT TUE JUL 21 2026
TODAY
S WINDS 10 KT. SEAS 3 FT OR LESS.
TONIGHT
SE TO S WINDS 10 KT. SEAS 3 FT OR LESS.
WED
S WINDS 10 KT. SEAS 3 FT OR LESS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
THU
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
THU NIGHT
E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI
E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI NIGHT
E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
SAT
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
GMZ046-220315-
CENTRAL GULF OF AMERICA FROM 22N TO 26N BETWEEN 87W AND 91W-
1103 AM EDT TUE JUL 21 2026
TODAY
S WINDS 10 KT S OF 24N, AND SW TO W 15 TO 20 KT N OF
24N. SEAS 3 TO 5 FT.
TONIGHT
S OF 24N, N WINDS 10 KT, SHIFTING TO SE LATE. N OF
24N, SW WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
WED
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU
E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
THU NIGHT
E WINDS 15 TO 20 KT S OF 24N, AND E 10 TO 15 KT N OF
24N. SEAS 2 TO 4 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
SAT
E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
GMZ047-220315-
SE GULF OF AMERICA FROM 22N TO 26N E OF 87W INCLUDING STRAITS OF
FLORIDA-
1103 AM EDT TUE JUL 21 2026
TODAY
S WINDS 10 KT S OF 24N, AND S TO SW 15 TO 20 KT N OF
24N. SEAS 3 TO 5 FT.
TONIGHT
S TO SW WINDS 15 TO 20 KT, SHIFTING TO SE 10 TO 15 KT
LATE. SEAS 3 TO 5 FT.
WED
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
THU NIGHT
NE TO E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
SAT
E TO SE WINDS 10 KT. SEAS 3 FT OR LESS.
GMZ048-220315-
SW GULF OF AMERICA S OF 22N W OF 94W-
1103 AM EDT TUE JUL 21 2026
TODAY
E TO SE WINDS 10 KT. SEAS 3 FT OR LESS.
TONIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
WED
E TO SE WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
THU
E WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
THU NIGHT
NE TO E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI
NE TO E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 3 FT OR LESS.
GMZ049-220315-
CENTRAL BAY OF CAMPECHE-
1103 AM EDT TUE JUL 21 2026
TODAY
E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
TONIGHT
NE TO E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
WED
E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
WED NIGHT
NE WINDS 15 TO 20 KT S OF 20N, AND NE TO E 10 TO
15 KT N OF 20N. SEAS 2 TO 4 FT.
THU
E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
THU NIGHT
NE WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
FRI
E WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
FRI NIGHT
NE TO E WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
SAT
E TO SE WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
GMZ050-220315-
E BAY OF CAMPECHE INCLUDING CAMPECHE BANK-
1103 AM EDT TUE JUL 21 2026
TODAY
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
TONIGHT
N TO NE WINDS 10 TO 15 KT, SHIFTING TO E LATE. SEAS
2 TO 4 FT.
WED
E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
WED NIGHT
NE TO E WINDS 15 TO 20 KT. SEAS 2 TO 4 FT.
THU
E TO SE WINDS 10 TO 15 KT, SHIFTING TO NE IN THE
AFTERNOON. SEAS 2 TO 4 FT.
THU NIGHT
NE TO E WINDS 15 TO 20 KT. SEAS 2 TO 4 FT.
FRI
E TO SE WINDS 10 TO 15 KT, SHIFTING TO NE IN THE
AFTERNOON. SEAS 2 TO 4 FT.
FRI NIGHT
NE WINDS 15 TO 20 KT, SHIFTING TO E TO SE LATE. SEAS
3 TO 5 FT.
SAT
W OF 90W, SE WINDS 15 TO 20 KT, SHIFTING TO N TO NE 10 TO
15 KT IN THE AFTERNOON. E OF 90W, SE WINDS 10 KT, SHIFTING TO NE
15 TO 20 KT IN THE AFTERNOON. SEAS 3 TO 5 FT.
FORECASTER CHRISTENSEN
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