


Coastal Waters Forecast
Issued by NWS Brownsville, TX
Issued by NWS Brownsville, TX
826 FZUS54 KBRO 170547 CWFBRO Coastal Waters Forecast for the Lower Texas Coast National Weather Service Brownsville TX 1247 AM CDT Fri Oct 17 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. GMZ100-171830- 1247 AM CDT Fri Oct 17 2025 .SYNOPSIS...Generally favorable marine conditions are expected to persist through the forecast. High pressure over the Northern Gulf looks to support generally light to moderate easterly to southeasterly winds and slight to moderate seas along the Lower Texas Coast through next Friday. $$ GMZ130-132-135-171830- Laguna Madre from the Port of Brownsville to the Arroyo Colorado- Laguna Madre from the Arroyo Colorado To 5 NM north of Port Mansfield TX- Laguna Madre from 5 nm north of Port Mansfield to Baffin Bay TX- 1247 AM CDT Fri Oct 17 2025 .TODAY...South winds around 5 knots, becoming east this afternoon. Smooth on the bay, increasing to light chop this afternoon. .TONIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Light chop on the bay. .SATURDAY...South winds 5 to 10 knots, becoming southeast in the afternoon. Light chop on the bay. .SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Light chop on the bay. .SUNDAY...West winds around 5 knots, becoming northeast 10 to 15 knots in the afternoon. Smooth on the bay, increasing to a moderate chop in the afternoon. .SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. A moderate chop on the bay, diminishing to light chop after midnight. .MONDAY...Southeast winds 5 to 10 knots. Light chop on the bay. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on the bay. .TUESDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Light chop on the bay, increasing to a moderate chop in the afternoon. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on the bay. $$ GMZ150-155-171830- Gulf waters from Port Mansfield to the Rio Grande out 20 nm- Gulf waters from Baffin Bay to Port Mansfield out 20 nm- 1247 AM CDT Fri Oct 17 2025 .TODAY...South winds around 5 knots, becoming east this afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. .TONIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds. .SATURDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds. .SUNDAY...West winds 5 to 10 knots, becoming northeast in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds. .SUNDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds and northeast 2 feet at 3 seconds. .MONDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .MONDAY NIGHT...Southeast winds 5 to 10 knots, becoming south 10 to 15 knots after midnight. Seas 2 to 4 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. $$ GMZ170-175-171830- Gulf waters from Port Mansfield to the Rio Grande extending from 20 to 60 nm- Gulf waters from Baffin Bay to Port Mansfield extending from 20 to 60 nm- 1247 AM CDT Fri Oct 17 2025 .TODAY...Southeast winds 5 to 10 knots, becoming east this afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. A slight chance of thunderstorms. .TONIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds. A slight chance of showers late in the evening. .SATURDAY...South winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: East 3 feet at 6 seconds. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds. .SUNDAY...West winds 5 to 10 knots, becoming northeast in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds. A slight chance of showers. A slight chance of thunderstorms in the afternoon. .SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: East 3 feet at 7 seconds and south 1 foot at 4 seconds. A slight chance of showers and thunderstorms early in the evening. .MONDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet. .TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to 4 feet. Winds and seas higher in and near thunderstorms. $$