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 6 To 8 Feet, Occasionally To 10 Feet. Wave Detail: South 7 Feet At 7 Seconds. |
| Tonight...South Winds Around 15 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet, Subsiding To 4 To 5 Feet After Midnight. Wave Detail: South 6 Feet At 7 Seconds, Becoming Southeast 5 Feet At 7 Seconds. |
| Friday...South Winds 10 To 15 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: Southeast 4 Feet At 7 Seconds. A Slight Chance Of Thunderstorms Early In The Morning. A Slight Chance Of Showers. |
| Friday Night...South Winds Around 10 Knots, Becoming Southwest After Midnight, Then Becoming North 15 To 20 Knots Early In The Morning. Seas 4 To 5 Feet. Wave Detail: South 4 Feet At 7 Seconds And Southeast 4 Feet At 8 Seconds. A Slight Chance Of Showers And Thunderstorms In The Evening, Then Showers Likely With A Chance Of Thunderstorms After Midnight. |
| Saturday...North Winds 20 To 25 Knots. Seas 6 To 9 Feet, Occasionally To 11 Feet, Building To 8 To 10 Feet, Occasionally To 13 Feet In The Afternoon. Wave Detail: North 7 Feet At 7 Seconds And Southeast 4 Feet At 7 Seconds, Becoming North 8 Feet At 7 Seconds And East 5 Feet At 7 Seconds. A Chance Of Showers, Mainly In The Morning. |
| Saturday Night...North Winds 20 To 25 Knots. Seas 7 To 10 Feet, Occasionally To 13 Feet. Wave Detail: Northeast 8 Feet At 7 Seconds. A Chance Of Showers. |
| Sunday...North Winds Around 20 Knots. Seas 6 To 9 Feet, Occasionally To 11 Feet. A Slight Chance Of Showers. |
| Sunday Night...Northeast Winds 15 To 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. |
| Monday...Northeast Winds 10 To 15 Knots. Seas 4 To 5 Feet. A Slight Chance Of Showers In The Afternoon. |
| Monday Night...Northeast Winds Around 10 Knots. Seas 3 To 5 Feet. A Slight Chance Of Showers. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Brownsville TX 1056pm CST Wednesday Jan 7 2026 Issued at 1031pm CST Wednesday Jan 7 2026 Overnight tonight into Thursday, a strong mid-level shortwave ejects northeastward from northern Mexico into northern/western portions of Texas, passing well north of Deep South Texas Thursday morning. However, in response, a lower level (925 mb) southerly jet over the region is forecast to increase speeds late tonight, strengthening to as much as 50 knots over the region for a couple of hours Thursday morning following sunrise. This, in combination with a continued tightened pressure gradient, is likely to lead to southerly winds of 20-25 mph (25-30 mph at the coast), gusting to 30-40 mph, mainly east of US 281/I-69 C, possibly even higher for inland portions of the Lower RGV. Although these speeds could fit Wind Advisory criteria, have held off on issuing now due to the low confidence, brief duration and limited geographical extent of the strongest winds. Fortunately, as the shortwave quickly continues northeastward, winds are expected to diminish throughout the afternoon and evening hours, though gusts up to 20-25 mph remain possible into the early nighttime hours. Meanwhile, a cold front attached to the associated surface low pressure over the Plains is expected to move into the County Warning Area (CWA) Friday afternoon and evening hours, shifting light/gentle southerly winds to northerly. Overnight Friday or early Saturday morning, as the main trough behind the shortwave moves north of the region, a surface high pressure builds over the Southern Plains as a strong upstream ridge arrives over the Rockies, sending a surge of high pressure to the region, which could lead to a low to medium (20-40%) chance of rain closer to the coast with another round of gusty winds likely on Saturday. Additionally, troughing behind the front could result in a low (15-30%) chance of rain during the day Satuday lingering into Sunday. Despite cloud cover and a low chance of rain, low humidity and increased winds behind the front could lead to a Fire Danger Statement for portions of the region over the weekend, especially on Saturday. Overnight lows in the 60s are likely tonight and Thursday night, rising to near record or record-breaking highs in the mid/upper 80s on Thursday and Friday ahead of the front, even lower 90s on along and west of US 281/I-69 C on Thursday. In wake of the front, lows in the 50s Friday night decrease to mainly 40s through the weekend and into the middle of next week as surface high over the Southern Plains maintains northerly to northeasterly winds. Highs in the 60s/70s on Saturday become mostly 60s/below average Sunday through Monday, possibly rising to the 70s by the middle of next week. A moderate risk of rip currents overnight tonight increases to a high risk Thursday. Marine Issued at 1031pm CST Wednesday Jan 7 2026 Moderate to fresh south-southeasterly winds and moderate (4-6 feet) seas overnight increase to strong with 5-7 foot seas Thursday morning due to a tightened pressure gradient over the Lower Texas coastal waters. A Small Craft Advisory (SCA) remains in effect until 6pm Thursday. Although winds diminish throughout Thursday afternoon and evening down to gentle to moderate by late Thursday night, moderate (3-5 feet) seas continue. A cold front passes through Friday evening into Friday night, with adverse marine conditions leading to another round of SCA (Small Craft Advisory) as northerly winds increase to strong or near gale with moderate to rough (6-9 feet) seas possible on Saturday. Gradual improvement is expected into Sunday and Monday of next week. Probabilities of rain increase to a low (15-30%) chance on Friday, increasing to a low to medium (40-60%) chance along the front Friday night, followed by a low to medium (30-40%) chance on Saturday as troughing continues behind the front, with chances gradually dropping off into Sunday and Monday. NOAA Brownsville TX Office: Watches - Warnings - Advisories TX...None. GM...Small Craft Advisory until 6pm CST Thursday for GMZ130-132-135- 150-155-170-175. |
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