FZUS54 KBRO 200533 CWFBRO Coastal Waters Forecast for the Lower Texas Coast National Weather Service Brownsville TX 1233 AM CDT Fri Mar 20 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. GMZ100-201815- 1233 AM CDT Fri Mar 20 2026 .SYNOPSIS...Light to moderate southeasterly winds and low to moderate seas will prevail along the Lower Texas Coast under the influence of high pressure. A moderate chop is expected on the bay each afternoon. $$ GMZ130-132-135-201815- Laguna Madre from the Port of Brownsville to the Arroyo Colorado- Laguna Madre from the Arroyo Colorado To 5 NM north of Port Mansfield TX- Laguna Madre from 5 nm north of Port Mansfield to Baffin Bay TX- 1233 AM CDT Fri Mar 20 2026 .TODAY...South winds 5 to 10 knots, becoming southeast early this afternoon, then increasing to 10 to 15 knots late this afternoon. Light chop on the bay, increasing to a moderate chop late this afternoon. .TONIGHT...South winds 10 to 15 knots, becoming around 10 knots early in the morning. A moderate chop on the bay, diminishing to light chop early in the morning. .SATURDAY...South winds 10 to 15 knots, becoming southeast late in the afternoon. A moderate chop on the bay. .SATURDAY NIGHT...South winds 10 to 15 knots. A moderate chop on the bay. .SUNDAY...South winds 10 to 15 knots, becoming southeast 15 to 20 knots late in the afternoon. A moderate chop on the bay, increasing to choppy late in the afternoon. .SUNDAY NIGHT...Southeast winds 15 to 20 knots, becoming south 5 to 10 knots. Choppy on the bay, diminishing to light chop. .MONDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay. .MONDAY NIGHT...East winds 10 to 15 knots, becoming southeast 5 to 10 knots in the late evening and overnight. A moderate chop on the bay, diminishing to light chop in the late evening and overnight. .TUESDAY...Southeast winds around 5 knots, increasing to 10 to 15 knots. Smooth on the bay, increasing to a moderate chop. .TUESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Light chop on the bay. $$ GMZ150-155-201815- Gulf waters from Port Mansfield to the Rio Grande out 20 nm- Gulf waters from Baffin Bay to Port Mansfield out 20 nm- 1233 AM CDT Fri Mar 20 2026 .TODAY...South winds 5 to 10 knots, becoming southeast 10 to 15 knots late this afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. .TONIGHT...South winds 10 to 15 knots, becoming around 10 knots early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. .SATURDAY...South winds 10 to 15 knots, becoming southeast late in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SATURDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SUNDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 2 feet at 6 seconds. .MONDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .TUESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots early in the morning. Seas 2 to 3 feet. $$ GMZ170-175-201815- Gulf waters from Port Mansfield to the Rio Grande extending from 20 to 60 nm- Gulf waters from Baffin Bay to Port Mansfield extending from 20 to 60 nm- 1233 AM CDT Fri Mar 20 2026 .TODAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. .TONIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SATURDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SATURDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SUNDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .MONDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to 3 feet. $$