FZUS54 KBRO 161846 CWFBRO Coastal Waters Forecast for the Lower Texas Coast National Weather Service Brownsville TX 146 PM CDT Fri Oct 16 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. GMZ100-170715- 146 PM CDT Fri Oct 16 2026 .SYNOPSIS...The passage of a cold front today will bring very adverse marine conditions to the Lower Texas Coast through the weekend. A brief improvement in winds and seas may occur early next week before becoming adverse again. $$ GMZ130-132-135-170715- 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- 146 PM CDT Fri Oct 16 2026 ...GALE WARNING IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...North winds 25 to 30 knots with gusts up to 40 knots. Very rough on the bay. .SATURDAY...North winds 25 to 30 knots, diminishing to 20 to 25 knots late in the morning, then increasing to 25 to 30 knots early in the afternoon, diminishing to 20 to 25 knots late in the afternoon. Very rough on the bay, diminishing to rough late in the morning, then increasing to very rough early in the afternoon, diminishing to rough late in the afternoon. .SATURDAY NIGHT...North winds 15 to 20 knots, diminishing to 10 to 15 knots in the late evening and overnight. Choppy on the bay, diminishing to a moderate chop in the late evening and overnight. .SUNDAY...North winds 15 to 20 knots, becoming northeast 10 to 15 knots late in the afternoon. Choppy on the bay, diminishing to a moderate chop late in the afternoon. A slight chance of showers in the afternoon. .SUNDAY NIGHT...Northeast winds 10 to 15 knots, diminishing to 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. .MONDAY...Northeast winds 5 to 10 knots. Light chop on the bay. A slight chance of showers in the afternoon. .MONDAY NIGHT...East winds 5 to 10 knots. Light chop on the bay. A slight chance of showers. .TUESDAY...East winds 5 to 10 knots. Light chop on the bay. A slight chance of showers until late afternoon. A slight chance of thunderstorms in the afternoon. A chance of showers late in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Light chop on the bay. A slight chance of thunderstorms early in the evening. A slight chance of showers. .WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots late in the afternoon. Light chop on the bay, increasing to a moderate chop late in the afternoon. A slight chance of showers until late afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Light chop on the bay. Winds and waves higher in and near thunderstorms. $$ GMZ150-155-170715- Gulf waters from Port Mansfield to the Rio Grande out 20 nm- Gulf waters from Baffin Bay to Port Mansfield out 20 nm- 146 PM CDT Fri Oct 16 2026 ...GALE WARNING IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...North winds 25 to 30 knots. Seas 9 to 14 feet, occasionally to 18 feet, building to 11 to 15 feet, occasionally to 19 feet after midnight. Wave Detail: North 13 feet at 8 seconds. A slight chance of showers and thunderstorms early this evening. .SATURDAY...North winds 25 to 30 knots, diminishing to 20 to 25 knots in the afternoon. Seas 10 to 15 feet, occasionally to 19 feet, subsiding to 9 to 12 feet, occasionally to 15 feet in the afternoon. Wave Detail: Northeast 12 feet at 9 seconds and north 4 feet at 6 seconds, becoming northeast 11 feet at 9 seconds and north 4 feet at 6 seconds. .SATURDAY NIGHT...North winds15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 4 to 6 feet, occasionally to 8 feet after midnight. Wave Detail: Northeast 7 feet at 8 seconds and north 2 feet at 5 seconds, becoming northeast 5 feet at 8 seconds and north 1 foot at 4 seconds. .SUNDAY...North winds 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 5 feet at 8 seconds and north 1 foot at 3 seconds. A slight chance of showers until late afternoon. .SUNDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 8 seconds. .MONDAY...Northeast winds around 10 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at 8 seconds. A slight chance of showers in the afternoon. .MONDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet. A slight chance of showers. .TUESDAY...East winds around 10 knots. Seas 4 to 5 feet. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. .TUESDAY NIGHT...East winds around 10 knots. Seas 4 to 5 feet. A chance of showers early in the evening, then a slight chance of showers in the late evening and early morning. A chance of showers early in the morning. .WEDNESDAY...East winds around 10 knots. Seas 4 to 5 feet. A slight chance of showers until late afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Winds and seas higher in and near thunderstorms. $$ GMZ170-175-170715- 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- 146 PM CDT Fri Oct 16 2026 ...GALE WARNING IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...North winds around 30 knots. Seas 9 to 14 feet, occasionally to 18 feet, building to 13 to 15 feet, occasionally to 19 feet after midnight. Wave Detail: North 13 feet at 8 seconds, becoming north 13 feet at 9 seconds. A chance of showers and thunderstorms early this evening. .SATURDAY...North winds 25 to 30 knots, diminishing to 20 to 25 knots late in the afternoon. Seas 11 to 14 feet, occasionally to 18 feet, subsiding to 9 to 12 feet, occasionally to 15 feet in the afternoon. Wave Detail: Northeast 13 feet at 9 seconds, becoming northeast 11 feet at 9 seconds and north 5 feet at 7 seconds. A slight chance of showers late in the morning. A chance of showers early in the afternoon, then a slight chance of showers late in the afternoon. .SATURDAY NIGHT...North winds 20 to 25 knots, becoming northeast 15 to 20 knots in the late evening and overnight. Seas 7 to 10 feet, occasionally to 13 feet, subsiding to 5 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: Northeast 8 feet at 8 seconds and north 4 feet at 6 seconds, becoming northeast 6 feet at 8 seconds and north 2 feet at 6 seconds. .SUNDAY...Northeast winds around 15 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 5 feet at 8 seconds and north 2 feet at 5 seconds. .SUNDAY NIGHT...Northeast winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 8 seconds and north 2 feet at 5 seconds. .MONDAY...Northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 8 seconds. A slight chance of showers in the morning, then a chance of showers in the afternoon. .MONDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. A chance of showers early in the evening, then a slight chance of showers in the late evening and overnight. .TUESDAY...East winds 10 to 15 knots. Seas 4 to 5 feet. A chance of showers. A slight chance of thunderstorms in the afternoon. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers until early morning, thena slight chance of showers early in the morning. .WEDNESDAY...East winds 10 to 15 knots. Seas 4 to 5 feet. A slight chance of showers. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet. Winds and seas higher in and near thunderstorms. $$