Port Mansfield, TX to the Rio Grande River Marine Forecast
| Tonight...South Winds 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: Southeast 5 Feet At 7 Seconds. |
| Thursday...South Winds 15 To 20 Knots. Seas 3 To 5 Feet. Wave Detail: Southeast 5 Feet At 7 Seconds. |
| Thursday Night...South Winds 10 To 15 Knots, Diminishing To 5 To 10 Knots After Midnight. Seas 3 To 5 Feet. Wave Detail: Southeast 4 Feet At 7 Seconds. |
| Friday...East Winds Around 5 Knots, Becoming Northeast In The Afternoon. Seas 2 To 4 Feet. Wave Detail: Southeast 3 Feet At 7 Seconds. |
| Friday Night...East Winds Around 10 Knots, Diminishing To Around 5 Knots In The Late Evening And Overnight. Seas 2 To 3 Feet. Wave Detail: Southeast 3 Feet At 7 Seconds. |
| Saturday...Southeast Winds 5 To 10 Knots. Seas 2 To 3 Feet. Wave Detail: East 2 Feet At 7 Seconds. |
| Saturday Night...Southeast Winds Around 10 Knots. Seas 2 To 3 Feet. |
| Sunday...Southeast Winds Around 10 Knots. Seas 2 To 3 Feet. |
| Sunday Night...Southeast Winds Around 10 Knots. Seas 2 To 3 Feet. |
| Monday...Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. |
| Monday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet. |
| Area Forecast Discussion National Weather Service Brownsville TX 106pm CST Wednesday Feb 25 2026 Issued at 106pm CST Wednesday Feb 25 2026 Spring-like conditions will continue across Deep South Texas through early next week with minimal precipitation chances, well above normal temperatures, and breezy afternoons. A tight pressure gradient is in place this afternoon as the region remains sandwiched between an area of low pressure translating along the Red River and high pressure centered over the eastern Gulf. This will maintain breezy southerly winds, particularly along/east of US-281 and over the Gulf waters through at least early tomorrow morning. A Wind Advisory is currently in effect through 6pm this evening as wind gusts up to 45 MPH cannot be ruled out with daytime mixing. Wind speeds should weaken below advisory criteria this evening, but will likely remain elevated with wind gusts around 20-25 MPH continuing tonight. In combination with warm temperatures, low humidity, cured fuels, and antecedent conditions, a Red Flag Warning is also in effect though 6pm this evening. More details can be found in the Fire Weather section below. A weak cold front, associated with the aforementioned low pressure system, will approach Deep South Texas tomorrow from west to east, likely during the late evening and overnight hours tomorrow. Compressional warming ahead of the frontal boundary will result in an unseasonably hot day, especially for late February standards, particularly along and west of US-281 with temperatures 15-20 degrees above normal. Probabilistic guidance indicates there’s a low to medium chance (20-50%) of high temperatures reaching the triple digits across Hidalgo, Brooks, Starr, Jim Hogg, and Zapata counties. It will still be quite warm along the immediate coast, with highs in the low to mid 90s, which is around 10-15 degrees above normal for late February. Unfortunately, the passage of the weak front won’t provide much relief from the heat, and above normal temperatures will continue into the weekend and early next week. Highs each day will range from the mid to upper 80s along the immediate coast and low 90s further inland, with lows mostly in the 60s. New daily record highs or ties cannot be ruled out tomorrow, February 26th. The forecast high at Brownsville is 90 degrees (Record: 90 degrees, 1971), Harlingen is 94 degrees (Record: 95 degrees, 1913), and McAllen is 99 degrees (Record: 97 degrees, 1962). The last 100 degree day at McAllen was October 19, 2025. There are some indications among long range guidance that low precipitation chances may return by the middle of next week or late week across portions of the region. This is also highlighted by CPC’s Day 6-10 and Day 8-14 precipitation outlook, with a 40-60% probability of above normal precipitation across Deep South Texas. Fingers crossed! Marine Issued at 106pm CST Wednesday Feb 25 2026 An enhanced pressure gradient along the immediate coast will maintain strong southerly winds and building seas across the Gulf waters and Laguna Madre. A Small Craft Advisory is in effect along the Laguna Madre and Gulf waters through early Thursday morning, with Small Craft Exercise Caution conditions likely through Thursday evening as winds remain slightly elevated. A weak cold front will approach late Thursday into early Friday, with winds becoming lighter and shifting to the north and northeast. Favorable marine conditions return this weekend and continue into early next week. Fire Weather Issued at 106pm CST Wednesday Feb 25 2026 A Red Flag Warning remains in effect through 6pm this afternoon for inland Cameron, Hidalgo, inland Willacy, inland Kenedy and Brooks counties. A Fire Danger Statement is in effect through 6 PM this afternoon for Zapata, Jim Hogg, and Starr counties. The combination of low afternoon relative humidity, gusty southerly to southeasterly winds, cured fuels, and antecedent conditions will result in elevated fire weather concerns across most of Deep South Texas. Afternoon relative humidity will range from 15-25 percent across the Northern Ranchlands to around 40-50 percent along the immediate coast. A tightening pressure gradient will result in wind gusts up to 45 MPH expected through late this afternoon along the immediate coast. Winds should remain slightly lower west of US-281, although occasional 20-foot winds near or just below 15 MPH cannot be ruled out. Despite the passage of a weak cold front on Thursday, lower wind speeds should limit rapid fire spread. NOAA Brownsville TX Office: Watches - Warnings - Advisories TX...Red Flag Warning until 6pm CST this evening for TXZ250-251- 253>255-353. Wind Advisory until 6pm CST this evening for TXZ251-254-255-351- 354-355. High Rip Current Risk through Thursday afternoon for TXZ451-454- 455. GM...Small Craft Advisory until 6am CST Thursday for GMZ130-132-135- 150-155-170-175. |
Brownsville TX Radar
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