Coastal Waters Forecast
Issued by NWS Brownsville, TX
Issued by NWS Brownsville, TX
201 FZUS54 KBRO 250905 CWFBRO Coastal Waters Forecast for the Lower Texas Coast National Weather Service Brownsville TX 405 AM CDT Wed Sep 25 2024 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. GMZ100-252130- 405 AM CDT Wed Sep 25 2024 .SYNOPSIS...High pressure across the eastern Gulf will support light to moderate winds and slight seas today. Tropical Storm Helene is expected to become Hurricane Helene while moving north- northeast through the eastern Gulf of Mexico later today through Thursday evening. Resulting swell will begin to arrive to the lower Texas coast Thursday. Meanwhile, a weak cold front is expected to pass through the western Gulf Coastal Waters tonight into Thursday morning, accompanied by a brief period of moderate to fresh northerly winds through Thursday evening. The combined effects of the front and swell will result in enhanced wave heights beginning Thursday and continuing through Friday. Small Craft Should Exercise Caution headlines for seas may be needed Thursday through Friday night. Favorable conditions look to return Saturday. $$ GMZ130-132-135-252130- 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- 405 AM CDT Wed Sep 25 2024 .TODAY...Northeast winds around 5 knots, becoming 5 to 10 knots this afternoon, then becoming northeast 5 to 10 knots late this afternoon. Smooth on the bay, increasing to light chop this afternoon. A chance of showers with a slight chance of thunderstorms this morning. .TONIGHT...East winds 5 to 10 knots, becoming north after midnight. Light chop on the bay, diminishing to smooth late in the evening, then increasing to light chop after midnight. A chance of showers and thunderstorms late in the evening. A slight chance of showers and thunderstorms after midnight. .THURSDAY...North winds 10 to 15 knots. A moderate chop on the bay. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...Northeast winds 10 to 15 knots, becoming east 5 to 10 knots in the late evening and early morning, then becoming northwest early in the morning. A moderate chop on the bay, diminishing to light chop in the late evening and early morning, then diminishing to smooth early in the morning. A slight chance of showers early in the evening. .FRIDAY...Northwest winds 5 to 10 knots, becoming northeast late in the afternoon. Light chop on the bay, diminishing to smooth in the afternoon. .FRIDAY NIGHT...East winds around 5 knots, becoming southwest early in the morning. Smooth on the bay. .SATURDAY...West winds around 5 knots, becoming northeast early in the afternoon, then becoming east late in the afternoon. Smooth on the bay. .SATURDAY NIGHT...Southeast winds around 5 knots, becoming south after midnight. Smooth on the bay, increasing to light chop after midnight. .SUNDAY...Southwest winds around 5 knots, becoming northeast late in the afternoon. Smooth on the bay, increasing to light chop late in the afternoon. .SUNDAY NIGHT...East winds 5 to 10 knots, becoming south early in the morning. Light chop on the bay, diminishing to smooth after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ150-155-252130- Gulf waters from Port Mansfield to the Rio Grande out 20 nm- Gulf waters from Baffin Bay to Port Mansfield out 20 nm- 405 AM CDT Wed Sep 25 2024 .TODAY...East winds around 5 knots, becoming northeast this afternoon. Seas 1 to 2 feet. Wave Detail: East 2 feet at 5 seconds. A chance of showers and thunderstorms this morning. .TONIGHT...East winds 5 to 10 knots, becoming north after midnight, then increasing to 10 to 15 knots early in the morning. Seas 1 to 2 feet. Wave Detail: East 2 feet at 5 seconds. A chance of showers and thunderstorms in the late evening and early morning. A chance of showers with a slight chance of thunderstorms early in the morning. .THURSDAY...North winds 10 to 15 knots. Seas 2 to 4 feet, building to 4 to 5 feet in the afternoon. Wave Detail: Northeast 4 feet at 5 seconds, becoming northeast 5 feet at 7 seconds. A chance of thunderstorms in the morning. A chance of showers. A slight chance of thunderstorms in the afternoon. .THURSDAY NIGHT...Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight, then becoming north early in the morning. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 9 seconds. A slight chance of showers early in the evening. .FRIDAY...Northwest winds 5 to 10 knots, becoming northeast late in the afternoon. Seas 4 to 5 feet. Wave Detail: East 5 feet at 11 seconds. .FRIDAY NIGHT...East winds around 5 knots, becoming southwest early in the morning. Seas 3 to 4 feet. Wave Detail: East 4 feet at 10 seconds. .SATURDAY...West winds 5 to 10 knots, becoming northwest early in the afternoon, then becoming northeast late in the afternoon. Seas 2 to 3 feet. .SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas 2 to 3 feet. .SUNDAY...Southwest winds 5 to 10 knots, becoming northeast late in the afternoon. Seas 1 to 2 feet. .SUNDAY NIGHT...East winds 5 to 10 knots, becoming southeast after midnight. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ GMZ170-175-252130- 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- 405 AM CDT Wed Sep 25 2024 .TODAY...East winds around 5 knots, becoming northeast this afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds. A chance of showers with a slight chance of thunderstorms early this morning, then a slight chance of showers and thunderstorms late this morning. .TONIGHT...Northeast winds 5 to 10 knots, becoming north after midnight, then increasing to 10 to 15 knots early in the morning. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 5 seconds. A slight chance of showers and thunderstorms late in the evening. A chance of showers with a slight chance of thunderstorms after midnight. .THURSDAY...North winds 15 to 20 knots. Seas 3 to 5 feet, building to 5 to 7 feet, occasionally to 9 feet in the afternoon. Wave Detail: Northeast 5 feet at 6 seconds, becoming north 6 feet at 8 seconds. A chance of thunderstorms in the morning. A chance of showers. A slight chance of thunderstorms in the afternoon. .THURSDAY NIGHT...North winds 10 to 15 knots. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 7 feet at 9 seconds. A slight chance of showers early in the evening. .FRIDAY...North winds 5 to 10 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East 6 feet at 11 seconds and northwest 2 feet at 4 seconds. .FRIDAY NIGHT...Northeast winds around 5 knots, becoming south after midnight. Seas 3 to 5 feet. Wave Detail: East 4 feet at 10 seconds and northwest 2 feet at 5 seconds. .SATURDAY...Southwest winds 5 to 10 knots, becoming north late in the afternoon. Seas 2 to 4 feet. .SATURDAY NIGHT...East winds around 5 knots, becoming south after midnight. Seas 2 to 3 feet. .SUNDAY...Southwest winds 5 to 10 knots, becoming northwest late in the morning, then becoming north early in the afternoon, becoming northeast late in the afternoon. Seas 2 to 3 feet. .SUNDAY NIGHT...Northeast winds around 5 knots, becoming southeast in the late evening and overnight. Seas 2 to 3 feet. A slight chance of showers early in the morning. Winds and seas higher in and near thunderstorms. $$