FZUS54 KBRO 132015 CWFBRO Coastal Waters Forecast for the Lower Texas Coast National Weather Service Brownsville TX 315 PM CDT Tue May 13 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. GMZ100-140915- 315 PM CDT Tue May 13 2025 .SYNOPSIS...An enhanced pressure gradient will result in moderate to occasionally strong southerly winds and moderate to elevated seas, beginning this evening and lasting through at least tomorrow. A Small Craft Advisory has been issued this evening for the Gulf waters, and remains in effect through 18z tomorrow (with the potential for extension needed), with small craft on the bay needing to exercise caution. Small Craft Exercise Caution conditions should still persist once the Small Craft Advisory expires. Winds and seas should weaken and conditions should improve to favorable by the weekend. $$ GMZ130-132-135-140915- Laguna Madre from the Port of Brownsville to the Arroyo Colorado- Laguna Madre from the Arroyo Colorado To 5 NM north of Port Mansfield TX- Laguna Madre from 5 nm north of Port Mansfield to Baffin Bay TX- 315 PM CDT Tue May 13 2025 ....SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...South winds 15 to 20 knots. Choppy on the bay. .WEDNESDAY...South winds 15 to 20 knots increasing to 20 to 25 knots with gusts up to 30 knots in the afternoon. Choppy on the bay becoming rough in the afternoon. .WEDNESDAY NIGHT...South winds 15 to 20 knots. Choppy on the bay. .THURSDAY...South winds 20 to 25 knots with gusts up to 30 knots. Rough on the bay. .THURSDAY NIGHT...Southeast winds 15 to 20 knots becoming south 10 to 15 knots after midnight. Choppy on the bay becoming a moderate chop after midnight. .FRIDAY...South winds 10 to 15 knots becoming southeast 15 to 20 knots in the afternoon. A moderate chop on the bay becoming choppy in the afternoon. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop on the bay. .SATURDAY...Southeast winds 10 to 15 knots. A moderate chop on the bay. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop on the bay. .SUNDAY...Southeast winds 15 to 20 knots. Choppy on the bay. .SUNDAY NIGHT...Southeast winds 15 to 20 knots. Choppy on the bay. $$ GMZ150-155-140915- Gulf waters from Port Mansfield to the Rio Grande out 20 nm- Gulf waters from Baffin Bay to Port Mansfield out 20 nm- 315 PM CDT Tue May 13 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH WEDNESDAY AFTERNOON... .TONIGHT...South winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: South 5 feet at 6 seconds. .WEDNESDAY...South winds 15 to 20 knots. Gusts to 30 knots in the afternoon. Seas 4 to 6 feet, with occasional seas up to 7 feet. Wave Detail: South 5 feet at 6 seconds. .WEDNESDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 5 feet building to 5 to 7 feet, with occasional seas up to 8 feet after midnight. Wave Detail: Southeast 5 feet at 6 seconds. .THURSDAY...South winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 7 feet, with occasional seas up to 8 feet. Wave Detail: Southeast 5 feet at 6 seconds. .THURSDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. .FRIDAY...Southeast winds around 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. .FRIDAY NIGHT...Southeast winds around 15 knots. Seas 4 to 5 feet. .SATURDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. .SUNDAY...Southeast winds 15 to 20 knots. Seas 4 to 5 feet. .SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 6 feet, with occasional seas up to 7 feet. $$ GMZ170-175-140915- Gulf waters from Port Mansfield to the Rio Grande extending from 20 to 60 nm- Gulf waters from Baffin Bay to Port Mansfield extending from 20 to 60 nm- 315 PM CDT Tue May 13 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH WEDNESDAY AFTERNOON... .TONIGHT...South winds 15 to 20 knots. Seas 5 to 7 feet, with occasional seas up to 8 feet. Wave Detail: South 5 feet at 6 seconds. .WEDNESDAY...South winds 15 to 20 knots. Seas 5 to 7 feet, with occasional seas up to 8 feet. Wave Detail: South 5 feet at 6 seconds. .WEDNESDAY NIGHT...South winds 15 to 20 knots. Seas 5 to 7 feet, with occasional seas up to 8 feet. Wave Detail: South 6 feet at 6 seconds. .THURSDAY...South winds 15 to 20 knots. Seas 5 to 7 feet, with occasional seas up to 8 feet. Wave Detail: Southeast 6 feet at 7 seconds. .THURSDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. .FRIDAY NIGHT...Southeast winds around 15 knots. Seas 4 to 5 feet. .SATURDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. .SUNDAY...Southeast winds 15 to 20 knots. Seas 4 to 5 feet. .SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 6 feet, with occasional seas up to 7 feet. $$