Baffin Bay to Port Mansfield, TX 20 - 60 NM Marine Forecast
| Today...South Winds 20 To 25 Knots, Diminishing To 15 To 20 Knots Late This Afternoon. Seas 5 To 7 Feet, Occasionally To 9 Feet. Wave Detail: South 6 Feet At 6 Seconds. |
| Tonight...South Winds 15 To 20 Knots, Diminishing To 10 To 15 Knots Early In The Morning. Seas 3 To 5 Feet. Wave Detail: South 4 Feet At 6 Seconds. A Slight Chance Of Showers And Thunderstorms Early In The Morning. |
| Tuesday...Southwest Winds 5 To 10 Knots, Becoming Southeast Late In The Afternoon. Seas 3 To 4 Feet. Wave Detail: Southeast 3 Feet At 6 Seconds. A Chance Of Showers In The Morning. A Slight Chance Of Thunderstorms Until Late Afternoon. A Slight Chance Of Showers In The Afternoon. |
| Tuesday Night...East Winds 5 To 10 Knots, Becoming Northeast 10 To 15 Knots Early In The Morning. Seas 3 To 4 Feet. Wave Detail: Southeast 3 Feet At 6 Seconds And Northeast 2 Feet At 3 Seconds. A Chance Of Showers In The Evening, Then Showers Likely With A Chance Of Thunderstorms After Midnight. |
| Wednesday...Northeast Winds 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: East 5 Feet At 6 Seconds. Showers Likely With A Chance Of Thunderstorms In The Morning, Then A Chance Of Showers With A Slight Chance Of Thunderstorms In The Afternoon. |
| Wednesday Night...Northeast Winds 15 To 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. Wave Detail: East 6 Feet At 7 Seconds. A Slight Chance Of Showers In The Evening. |
| Thursday...Northeast Winds 15 To 20 Knots. Seas 4 To 5 Feet. |
| Thursday Night...East Winds Around 15 Knots. Seas 4 To 5 Feet. |
| Friday...Southeast Winds Around 15 Knots. Seas 4 To 5 Feet, Building To 5 To 7 Feet, Occasionally To 9 Feet In The Afternoon. A Slight Chance Of Showers In The Afternoon. |
| Friday Night...Southeast Winds 15 To 20 Knots. Seas 6 To 8 Feet, Occasionally To 10 Feet. A Chance Of Showers. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Brownsville TX 1100pm CST Sunday Nov 23 2025 Issued at 1048pm CST Sunday Nov 23 2025 Hot, primarily rain-free conditions are expected to continue through Tuesday, with high temperatures well above normal for late November. Daily high temperature records will be neared, tied, or broken. A low-level jet will maintain gusty southeasterly winds, around 30 kts Monday ahead of an approaching initial frontal boundary. This boundary may drift into the Rio Grande Plains and Brush Country late this afternoon, bringing a shift of winds from the north before stalling. At lower Texas beaches, there is a high risk of rip currents through Monday evening. Tuesday night, a second cold front accelerating across the CWA (County Warning Area) will provide a medium chance of rain (40 to 60%) overnight into early Wednesday across the CWA, with a lingering low to medium chance of showers (20 to 40%) through Wednesday afternoon along the Rio Grande. There is a chance for strong thunderstorms along the front. Cooler air will advect in behind the front, bringing more seasonable temperatures Wednesday and Thursday. These will not last long, as above-average temperatures gradually return Friday onward. Marine Issued at 1048pm CST Sunday Nov 23 2025 Adverse conditions with gusty south winds and moderate seas will prevail through Monday afternoon. A Small Craft Advisory (SCA) is in effect from midnight Monday until 3pm CST Monday afternoon. Conditions gradually improve as an approaching frontal boundary stalls over South Texas. A second, stronger cold front is expected to cross over lower Texas Waters late Tuesday, once again returning adverse conditions. Small Craft Exercise Caution headlines and SCA (Small Craft Advisory) are likely Wednesday. Rain chances are low (20%) Monday night into Tuesday, increasing to medium (50 to 60%) across the waters as the cold front pushes through. Lightning, gusty winds, and reduced visibility with heavy rain are possible in any storms. NOAA Brownsville TX Office: Watches - Warnings - Advisories TX...None. GM...Small Craft Advisory until 3pm CST Monday for GMZ130-132-135- 150-155-170-175. |
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