San Martin Lake Channel, TX Coastal Forecast

FZUS54 KBRO 121427
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
Issued by National Weather Service Lake Charles LA
927 AM CDT Tue May 12 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.

GMZ100-130315-
927 AM CDT Tue May 12 2026

.SYNOPSIS...Favorable marine conditions are expected to prevail
for the next several days. Light to moderate northeasterly winds
are forecast to shift easterly to southeasterly Tuesday evening,
remaining southeasterly through the remainder of the week.


$$

GMZ130-132-135-130315-
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-
927 AM CDT Tue May 12 2026

.REST OF TODAY...Northeast winds 5 to 10 knots, becoming around
10 knots late this afternoon. Light chop on the bay.
.TONIGHT...East winds 5 to 10 knots, becoming southeast after
midnight. Light chop on the bay.
.WEDNESDAY...East winds 5 to 10 knots. Light chop on the bay.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Light chop on the bay.
.THURSDAY...South winds 5 to 10 knots, becoming southeast early
in the afternoon, then increasing to 10 to 15 knots late in the
afternoon. Light chop on the bay, increasing to a moderate chop
late in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.FRIDAY...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Choppy on the bay.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.SATURDAY...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Choppy on the bay.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Choppy on the
bay.

$$

GMZ150-155-130315-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
927 AM CDT Tue May 12 2026

.REST OF TODAY...Northeast winds around 10 knots. Seas 2 to
4 feet.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 2 to 3 feet.
.THURSDAY...Southeast winds 5 to 10 knots, becoming around
10 knots late in the afternoon. Seas 2 to 3 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
4 feet.
.FRIDAY...Southeast winds around 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet.
.SATURDAY...Southeast winds around 15 knots. Seas 3 to 4 feet.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to
5 feet.

$$

GMZ170-175-130315-
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-
927 AM CDT Tue May 12 2026

.REST OF TODAY...Northeast winds 10 to 15 knots. Seas 3 to
4 feet.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 2 to 3 feet.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
4 feet.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet.
.SATURDAY...Southeast winds around 15 knots. Seas 4 to 5 feet.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to
5 feet.

$$