Port Mansfield, TX to the Rio Grande River 20 - 60 NM Marine Forecast
|Rest Of Tonight...Southeast Winds 20 To 25 Knots With Gusts Up To 35 Knots. Seas 6 To 8 Feet, With Occasional Seas Up To 9 Feet.|
|Tuesday...Southeast Winds 15 To 20 Knots With Gusts Up To 30 Knots. Seas 5 To 7 Feet, With Occasional Seas Up To 8 Feet. A Slight Chance Of Showers Late In The Afternoon.|
|Tuesday Night...Southeast Winds 15 To 20 Knots. Seas 4 To 5 Feet.|
|Wednesday...South Winds 10 To 15 Knots Becoming Southwest Late In The Morning, Then Becoming Northwest 15 To 20 Knots Early In The Afternoon Increasing To 20 To 25 Knots With Gusts Up To 30 Knots Late In The Afternoon. Seas 5 To 7 Feet, With Occasional Seas Up To 8 Feet. A Chance Of Showers.|
|Wednesday Night...North Winds 15 To 20 Knots Decreasing To 10 To 15 Knots In The Late Evening And Overnight. Seas 4 To 6 Feet, With Occasional Seas Up To 7 Feet.|
|Thursday...North Winds 10 To 15 Knots. Seas 4 To 5 Feet.|
|Thursday Night...Northeast Winds Around 10 Knots Becoming North After Midnight, Then Increasing To 20 To 25 Knots With Gusts Up To 30 Knots Early In The Morning. Seas 3 To 4 Feet Building To 5 To 7 Feet, With Occasional Seas Up To 8 Feet After Midnight.|
|Friday...North Winds 20 To 25 Knots With Gusts Up To 30 Knots. Seas 6 To 9 Feet, With Occasional Seas Up To 11 Feet.|
|Friday Night...North Winds 15 To 20 Knots. Gusts To 30 Knots Early In The Evening. Seas 6 To 8 Feet, With Occasional Seas Up To 9 Feet.|
|Saturday...Northeast Winds 10 To 15 Knots Becoming Around 10 Knots Late In The Afternoon. Seas 4 To 6 Feet, With Occasional Seas Up To 7 Feet.|
|Saturday Night...East Winds 10 To 15 Knots Becoming Southeast After Midnight. Seas 3 To 4 Feet.|
| Area Forecast Discussion|
...UPDATED National Weather Service Brownsville TX
1042pm CST Monday Feb 6 2023
(Wednesday through next Monday) Issued at 236pm CST Monday Feb 6 2023
A progressive upper level pattern to usher through a family of 500mb troughs moving rapidly west to east across the country bringing at least two cold fronts through the long-term and possibly a 3rd front next Tuesday. Models remain in good agreement and consistency with this fast upper level synoptic flow pattern.
The first trough and front move through Wednesday morning, slower than previous models, due to the trough closing off for about 12 hours. The front brings with it a chance of showers with still a slight chance of thunderstorms which should move off the coast in the morning with some linger showers in wake of the boundary as the upper trough opens up and lingers over the Red River along TX/OK border. Modest drier and cooler air to filter in quickly with temperature initially trending lower than showing limited recovery for the afternoon. As for fire weather threat the cooler ambient temperatures and not as low dewpoints to keep relative humidity levels higher than previous model runs. Gusty winds in the morning could briefly elevate fire weather concerns west of I-69C, however northwest winds drop through the afternoon lessening the threat for red flag conditions. A cool Wednesday night and mild fair weather day is expected Thursday as weak high pressure settles over the region.
Next short wave dives quickly south along the front range of the Rockies Thursday moving across Texas Thursday night/Friday morning. A slighlty stronger cold front is still indicated to sweep through with gusty wind and much drier air Thursday night. Dew points and relative humidity likely to be the lowest of the week while initial wind conditions may be elevated models show gradual lowering of the winds for the afternoon. Fire weather conditions are likely to be elevated but with the lowering winds Red Flag conditions may be waning, but we will continue to monitor. Mid-level high pressure builds over the state through Saturday with Temperatures below normal temperatures Friday and Saturday with lows in the 30s and 40s and highs only in the 60s. Fair weather continues Sunday but as surface ridge heads east winds turn southeast ushering in a warming trend. Monday the region may see the south winds increase to strong levels in advance of the next strong low pressure trough with models showing this the strongest and farther south of the series of troughs this week.
Issued at 236pm CST Monday Feb 6 2023
Wednesday through Monday...Models remain in favor of pushing two cold fronts through the Lower Texas waters this week. Adverse weather conditions look to be brief Wednesday as the first front moves through in the morning. Fresh and gusty northerly winds to rapidly build seas to moderately high levels through the afternoon. High pressure settles quickly along the coast Wednesday night with improving conditions into Thursday. Next front quickly surges south Thursday night with strong northwest winds through Friday. Wind gusts could approach gales for a short window Friday morning. High pressure builds overhead Saturday and passes to the east Sunday with
NOAA Brownsville TX Office: Watches - Warnings - Advisories
TX...None. GM...Small Craft Advisory until noon CST Tuesday for GMZ150-155-170- 175.