FZUS54 KBRO 041744 CWFBRO Coastal Waters Forecast for the Lower Texas Coast National Weather Service Brownsville TX 1144 AM CST Thu Dec 4 2025 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. GMZ100-050615- 1144 AM CST Thu Dec 4 2025 .SYNOPSIS...The passage of a cold front through the Lower Texas Coast on Thursday will produce adverse marine conditions tonight and tomorrow. Improved winds and seas are anticipated during the weekend before another front on Sunday could deteriorate conditions again. $$ GMZ130-132-135-050615- 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- 1144 AM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM CST THIS AFTERNOON THROUGH FRIDAY MORNING... .REST OF TODAY...Northwest winds 5 to 10 knots, increasing to 15 to 20 knots early this afternoon, then becoming north 20 to 25 knots late this afternoon. Light chop on the bay, increasing to a moderate chop early this afternoon, then increasing to choppy late this afternoon. A slight chance of showers and thunderstorms late this morning, then a chance of showers and thunderstorms early this afternoon. A slight chance of showers and thunderstorms late this afternoon. .TONIGHT...North winds 15 to 20 knots. Choppy on the bay. A slight chance of rain and thunderstorms early in the evening. A chance of rain late in the evening, then a slight chance of rain after midnight. .FRIDAY...North winds 10 to 15 knots, diminishing to 5 to 10 knots late in the afternoon. A moderate chop on the bay, diminishing to light chop late in the afternoon. A slight chance of rain until late afternoon. .FRIDAY NIGHT...North winds 5 to 10 knots. Light chop on the bay. A chance of rain in the evening, then a chance of showers after midnight. .SATURDAY...North winds 5 to 10 knots, becoming northeast late in the afternoon. Light chop on the bay. .SATURDAY NIGHT...Northeast winds around 5 knots, becoming southeast around 5 knots late in the evening, then becoming southwest after midnight, becoming west around 5 knots early in the morning. Smooth on the bay. .SUNDAY...Northwest winds around 5 knots, becoming north in the afternoon. Light chop on the bay. .SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 15 to 20 knots in the late evening and overnight. A moderate chop on the bay, increasing to choppy in the late evening and overnight. .MONDAY...North winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Choppy on the bay, diminishing to a moderate chop in the afternoon. .MONDAY NIGHT...Northeast winds 5 to 10 knots. Light chop on the bay. Winds and waves higher in and near thunderstorms. $$ GMZ150-155-050615- Gulf waters from Port Mansfield to the Rio Grande out 20 nm- Gulf waters from Baffin Bay to Port Mansfield out 20 nm- 1144 AM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM CST THIS AFTERNOON THROUGH FRIDAY MORNING... .REST OF TODAY...West winds around 15 knots, becoming northwest early this afternoon, then becoming north 20 to 25 knots late this afternoon. Seas 3 to 4 feet, building to 4 to 6 feet, occasionally to 8 feet this afternoon. Wave Detail: Southeast 3 feet at 6 seconds, becoming southeast 4 feet at 6 seconds and northwest 2 feet at 2 seconds. A chance of showers late this morning. A chance of thunderstorms. Showers likely this afternoon. .TONIGHT...North winds 15 to 20 knots. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail: North 8 feet at 7 seconds. A slight chance of thunderstorms until early morning. A chance of rain. .FRIDAY...North winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet in the afternoon. Wave Detail: North 7 feet at 6 seconds, becoming northeast 4 feet at 7 seconds. A chance of rain early in the morning, then a slight chance of rain in the afternoon. .FRIDAY NIGHT...North winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 6 seconds. A chance of rain in the evening, then a chance of showers after midnight. .SATURDAY...North winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 6 seconds. A slight chance of showers in the morning. .SATURDAY NIGHT...Northeast winds around 5 knots, becoming west early in the morning. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds. .SUNDAY...Northwest winds 5 to 10 knots, becoming north in the afternoon. Seas 2 to 3 feet. .SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 15 to 20 knots in the late evening and overnight. Seas 2 to 4 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. .MONDAY...North winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet in the afternoon. .MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet. Winds and seas higher in and near thunderstorms. $$ GMZ170-175-050615- 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- 1144 AM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM CST THIS AFTERNOON THROUGH FRIDAY MORNING... .REST OF TODAY...Southwest winds 15 to 20 knots, becoming west early this afternoon, then becoming north 20 to 25 knots late this afternoon. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds and northwest 2 feet at 3 seconds. A chance of thunderstorms. .TONIGHT...North winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet, building to 7 to 9 feet, occasionally to 11 feet after midnight. Wave Detail: North 7 feet at 7 seconds and southeast 5 feet at 6 seconds, becoming northeast 8 feet at 7 seconds. Rain likely with a chance of thunderstorms in the evening, then a chance of rain with a slight chance of thunderstorms after midnight. .FRIDAY...North winds 15 to 20 knots, becoming northeast 10 to 15 knots in the afternoon. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 3 to 5 feet in the afternoon. Wave Detail: North 7 feet at 7 seconds, becoming north 4 feet at 6 seconds. A chance of rain. .FRIDAY NIGHT...Northeast winds 5 to 10 knots, becoming north early in the morning. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 6 seconds. Rain likely in the evening, then showers likely with a slight chance of thunderstorms after midnight. .SATURDAY...North winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. .SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming southwest early in the morning. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 4 seconds. .SUNDAY...Northwest winds 5 to 10 knots, becoming north 10 to 15 knots in the afternoon. Seas 2 to 3 feet. A slight chance of showers. A slight chance of thunderstorms in the afternoon. .SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. .MONDAY...North winds 15 to 20 knots, becoming northeast 10 to 15 knots late in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet in the afternoon. .MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Winds and seas higher in and near thunderstorms. $$