Coastal Waters Forecast
Issued by NWS Brownsville, TX
Issued by NWS Brownsville, TX
895 FZUS54 KBRO 290628 CWFBRO Coastal Waters Forecast for the Lower Texas Coast National Weather Service Brownsville TX 1228 AM CST Sat Nov 29 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. GMZ100-291915- 1228 AM CST Sat Nov 29 2025 .SYNOPSIS...A Small Craft Advisory is in effect through 6 PM this evening, and may need to be extended depending on the strength of the pressure gradient/cold front. SCEC conditions are still expected through tonight and possibly into Sunday. $$ GMZ130-132-135-291915- Laguna Madre from the Port of Brownsville to the Arroyo Colorado- Laguna Madre from the Arroyo Colorado To 5 NM north of Port Mansfield TX- Laguna Madre from 5 nm north of Port Mansfield to Baffin Bay TX- 1228 AM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...South winds 15 to 20 knots, increasing to 20 to 25 knots early this afternoon, then diminishing to 15 to 20 knots late this afternoon. Choppy on the bay, increasing to rough early this afternoon, then diminishing to choppy late this afternoon. A slight chance of showers early this afternoon. .TONIGHT...South winds 10 to 15 knots, becoming southwest early in the morning. A moderate chop on the bay, diminishing to light chop early in the morning. A slight chance of showers and thunderstorms after midnight. A chance of showers with a slight chance of thunderstorms early in the morning. .SUNDAY...Northwest winds 10 to 15 knots, becoming north late in the morning, then increasing to 15 to 20 knots in the afternoon. Choppy on the bay. A chance of thunderstorms in the morning. Showers. A slight chance of thunderstorms early in the afternoon. .SUNDAY NIGHT...North winds 15 to 20 knots. Choppy on the bay. Showers likely. .MONDAY...Northwest winds 10 to 15 knots. A moderate chop on the bay. A chance of showers, mainly in the morning. .MONDAY NIGHT...Northwest winds 10 to 15 knots. A moderate chop on the bay. A slight chance of showers. .TUESDAY...North winds 10 to 15 knots. A moderate chop on the bay. .TUESDAY NIGHT...Northeast winds 5 to 10 knots, becoming east after midnight. Light chop on the bay. .WEDNESDAY...Southeast winds 5 to 10 knots. Light chop on the bay. A slight chance of showers in the afternoon. .WEDNESDAY NIGHT...Southeast winds around 10 knots. Light chop on the bay. A chance of showers. Winds and waves higher in and near thunderstorms. $$ GMZ150-155-291915- Gulf waters from Port Mansfield to the Rio Grande out 20 nm- Gulf waters from Baffin Bay to Port Mansfield out 20 nm- 1228 AM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...South winds 20 to 25 knots, diminishing to 15 to 20 knots late this afternoon. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail: Southeast 8 feet at 7 seconds. A slight chance of showers this afternoon. .TONIGHT...South winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet after midnight. Wave Detail: Southeast 6 feet at 7 seconds, becoming southeast 5 feet at 7 seconds. A slight chance of showers and thunderstorms in the late evening and early morning. A chance of showers and thunderstorms early in the morning. .SUNDAY...Northwest winds 10 to 15 knots, becoming north 15 to 20 knots with gusts up to 30 knots in the afternoon. Seas 3 to 4 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: Southeast 4 feet at 7 seconds, becoming northeast 6 feet at 7 seconds. A chance of thunderstorms in the morning, then a slight chance of thunderstorms early in the afternoon. Showers. .SUNDAY NIGHT...North winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 6 feet at 7 seconds and north 3 feet at 4 seconds. Showers. .MONDAY...Northwest winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 6 seconds. Showers likely, mainly in the morning. .MONDAY NIGHT...North winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: North 5 feet at 5 seconds. A chance of showers. .TUESDAY...North winds 15 to 20 knots, diminishing to 10 to 15 knots late in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. A slight chance of showers. .TUESDAY NIGHT...Northeast winds 10 to 15 knots, becoming east 5 to 10 knots after midnight. Seas 3 to 4 feet. .WEDNESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. A slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southeast winds around 10 knots, becoming south early in the morning. Seas 3 to 4 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ170-175-291915- 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- 1228 AM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...South winds 20 to 25 knots, diminishing to 15 to 20 knots late this afternoon. Seas 7 to 9 feet, occasionally to 11 feet. Wave Detail: Southeast 8 feet at 7 seconds. A slight chance of showers early this morning. A slight chance of showers this afternoon. .TONIGHT...South winds 15 to 20 knots, diminishing to 10 to 15 knots early in the morning. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: South 7 feet at 7 seconds. A slight chance of showers and thunderstorms in the evening. A chance of showers and thunderstorms after midnight. .SUNDAY...South winds 10 to 15 knots, becoming northeast late in the morning, then becoming north 15 to 20 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 7 seconds. Showers with a chance of thunderstorms in the morning, then showers with a slight chance of thunderstorms in the afternoon. .SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 7 seconds. Showers. A slight chance of thunderstorms in the late evening and early morning. .MONDAY...North winds around 15 knots, becoming northwest in the afternoon. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 7 seconds and west 3 feet at 5 seconds. A slight chance of thunderstorms early in the morning. Showers in the morning, then a chance of showers in the afternoon. .MONDAY NIGHT...Northwest winds 10 to 15 knots, becoming north 15 to 20 knots early in the morning. Seas 4 to 5 feet. Wave Detail: North 5 feet at 6 seconds. A chance of showers. .TUESDAY...North winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers, mainly in the morning. .TUESDAY NIGHT...Northeast winds 10 to 15 knots, becoming east after midnight. Seas 3 to 4 feet. A slight chance of showers after midnight. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and seas higher in and near thunderstorms. $$