FZUS54 KBRO 171631
CWFBRO
Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1131 AM CDT Mon Aug 17 2026
Lower Texas coastal waters from Baffin Bay to the mouth of the
Rio Grande out 60 NM.
Seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 10 percent of the waves.
GMZ100-180515-
1131 AM CDT Mon Aug 17 2026
.SYNOPSIS...Generally favorable marine conditions are expected along
the Lower Texas Coast through the next several days, with light
to moderate winds and low to moderate seas in place. However,
winds may increase over the Laguna Madre mid to late week, which
could require Small Craft Should Exercise Caution at times.
$$
GMZ130-132-135-180515-
Laguna Madre from the Port of Brownsville to the Arroyo Colorado-
Laguna Madre from the Arroyo Colorado To 5 NM north of Port
Mansfield TX-
Laguna Madre from 5 nm north of Port Mansfield to Baffin Bay TX-
1131 AM CDT Mon Aug 17 2026
.TONIGHT...Southeast winds 5 to 10 knots. Light chop on the bay.
.TUESDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots becoming south
5 to 10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight.
.WEDNESDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. A moderate
chop on the bay.
.THURSDAY...South winds 5 to 10 knots becoming southeast 15 to
20 knots in the afternoon. Light chop on the bay becoming choppy
in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.FRIDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots becoming south
5 to 10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight.
.SATURDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots becoming south
5 to 10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight.
$$
GMZ150-155-180515-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1131 AM CDT Mon Aug 17 2026
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.TUESDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds and east 1 foot at
8 seconds.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 4 seconds and east
1 foot at 9 seconds.
.WEDNESDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 4 seconds and southeast 2 feet at 8 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
.SATURDAY...South winds 5 to 10 knots becoming southeast in the
afternoon. Seas 2 to 3 feet.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
$$
GMZ170-175-180515-
Gulf waters from Port Mansfield to the Rio Grande extending from
20 to 60 nm-
Gulf waters from Baffin Bay to Port Mansfield extending from
20 to 60 nm-
1131 AM CDT Mon Aug 17 2026
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.TUESDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 1 foot at 4 seconds and southeast 1 foot at
8 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots becoming south
10 to 15 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 4 seconds and east 1 foot at 9 seconds.
.WEDNESDAY...South winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 4 seconds and east 1 foot at
8 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
4 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 7 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
.SATURDAY...South winds 5 to 10 knots. Seas 2 to 4 feet.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
$$
CWFBRO
Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1131 AM CDT Mon Aug 17 2026
Lower Texas coastal waters from Baffin Bay to the mouth of the
Rio Grande out 60 NM.
Seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 10 percent of the waves.
GMZ100-180515-
1131 AM CDT Mon Aug 17 2026
.SYNOPSIS...Generally favorable marine conditions are expected along
the Lower Texas Coast through the next several days, with light
to moderate winds and low to moderate seas in place. However,
winds may increase over the Laguna Madre mid to late week, which
could require Small Craft Should Exercise Caution at times.
$$
GMZ130-132-135-180515-
Laguna Madre from the Port of Brownsville to the Arroyo Colorado-
Laguna Madre from the Arroyo Colorado To 5 NM north of Port
Mansfield TX-
Laguna Madre from 5 nm north of Port Mansfield to Baffin Bay TX-
1131 AM CDT Mon Aug 17 2026
.TONIGHT...Southeast winds 5 to 10 knots. Light chop on the bay.
.TUESDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots becoming south
5 to 10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight.
.WEDNESDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. A moderate
chop on the bay.
.THURSDAY...South winds 5 to 10 knots becoming southeast 15 to
20 knots in the afternoon. Light chop on the bay becoming choppy
in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.FRIDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots becoming south
5 to 10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight.
.SATURDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots becoming south
5 to 10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight.
$$
GMZ150-155-180515-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1131 AM CDT Mon Aug 17 2026
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.TUESDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds and east 1 foot at
8 seconds.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 4 seconds and east
1 foot at 9 seconds.
.WEDNESDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 4 seconds and southeast 2 feet at 8 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
.SATURDAY...South winds 5 to 10 knots becoming southeast in the
afternoon. Seas 2 to 3 feet.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
$$
GMZ170-175-180515-
Gulf waters from Port Mansfield to the Rio Grande extending from
20 to 60 nm-
Gulf waters from Baffin Bay to Port Mansfield extending from
20 to 60 nm-
1131 AM CDT Mon Aug 17 2026
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.TUESDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 1 foot at 4 seconds and southeast 1 foot at
8 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots becoming south
10 to 15 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 4 seconds and east 1 foot at 9 seconds.
.WEDNESDAY...South winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 4 seconds and east 1 foot at
8 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
4 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 7 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
.SATURDAY...South winds 5 to 10 knots. Seas 2 to 4 feet.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
$$