Marine Weather Net

Laguna Madre from the Arroyo Colorado to Port Mansfield, TX Marine Forecast


TONIGHT

S
WINDS
20
KNOTS

WEDNESDAY

E
WINDS
5 - 10
KNOTS

WEDNESDAY NIGHT

NE
WINDS
25 - 30
KNOTS

THURSDAY

NE
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
GMZ132 Forecast Issued: 338 PM CST Tue Feb 27 2024

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING
Tonight...South Winds Around 20 Knots Decreasing To 10 To 15 Knots Late In The Evening And After Midnight. Rough Bay Waters Becoming A Moderate Chop On The Bay Late In The Evening And After Midnight. Patchy Fog After Midnight.
Wednesday...East Winds 5 To 10 Knots Becoming Northeast 25 To 30 Knots In The Afternoon. A Light Chop On The Bay Becoming Very Rough Bay Waters In The Afternoon. Patchy Fog In The Morning.
Wednesday Night...Northeast Winds 25 To 30 Knots Decreasing To 15 To 20 Knots After Midnight. Very Rough Bay Waters Becoming Choppy Bay Waters After Midnight.
Thursday...Northeast Winds 10 To 15 Knots. A Moderate Chop On The Bay. A Slight Chance Of Showers In The Morning, Then A Chance Of Showers In The Afternoon.
Thursday Night...Northeast Winds 10 To 15 Knots Becoming North 5 To 10 Knots After Midnight. A Moderate Chop On The Bay Becoming A Light Chop On The Bay After Midnight. A Slight Chance Of Showers.
Friday...North Winds 5 To 10 Knots. A Light Chop On The Bay. A Slight Chance Of Showers.
Friday Night...Northeast Winds 5 To 10 Knots. A Light Chop On The Bay.
Saturday...Northeast Winds Around 5 Knots Becoming East In The Afternoon. Smooth Bay Waters Becoming A Light Chop In The Afternoon.
Saturday Night...Southeast Winds Around 10 Knots. A Light Chop On The Bay.
Sunday...Southeast Winds 10 To 15 Knots. A Moderate Chop On The Bay.
Sunday Night...Southeast Winds 10 To 15 Knots. A Moderate Chop On The Bay.
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Area Forecast Discussion
...UPDATED National Weather Service Brownsville TX
501pm CST Tuesday Feb 27 2024

Long Term
(Thursday through next Tuesday) Issued at 210pm CST Tuesday Feb 27 2024

A mid-level low will pass to the north of Deep South Texas and the Rio Grande Valley on Thursday into Friday this will bring about southwesterly flow aloft. During the weekend, this the flow aloft is expected to become zonal ahead of the next frontal system to approach during the early work week. On the surface, more cold air advection and northerly flow is expected to last until Saturday. This northerly flow is expected to bring in more dry air with it. Thanks to the expected widespread cloud coverage, temperatures have been kept below the NBM guidance. Probability of Precipitation was bumped up along the coast due to the expected presence of a coastal trough developing.

Moving into Thursday, PWAT (Precipitable Water) values do start to surge upward to the range of 1.5 to 1.6, which is above the 90th percentile and near the daily max values for precipitable water for Leap Day and March 1st. Despite all this moisture, the best chances for rain are along the coast. Probability of Precipitation has been adjusted to 20 percent along the coast for Thursday and Friday.

During the course of the weekend, the frontal boundary is expected to make a return trip over the Deep South Texas and the Rio Grande Valley as a warm front. This is expected to help temperatures reach into the 80s for the weekend and early work week. It is also possible that some parts of Starr and Zapata could get into the low 90s on Sunday, but that will be dependent on cloud coverage.

Models are showing that another cold front could pass through the region on Tuesday, however at this point this cold front does not appear to be strong and does not have any precipitation associated with it. However, there is still plenty of time before this front arrives, so the models could change.

Marine
Issued at 210pm CST Tuesday Feb 27 2024

Now through Wednesday night...Extended the small craft advisory on the Gulf through midnight. Winds should decrease below criteria after midnight, but seas may remain slightly elevated. Small craft advisory conditions will develop again Wednesday afternoon after a cold front passage.

Thursday through Next Tuesday...An adverse start for the waters on Thursday will quickly give way to more favorable conditions by Thursday afternoon. Chances of showers and isolated thunderstorms are possible Thursday and Friday. Light to moderate winds and low to moderate seas are expected Friday through Tuesday as northerly winds turn back towards the south.

Fire Weather
Issued at 210pm CST Tuesday Feb 27 2024

Wednesday...The Wednesday cold front will bring lower relative humidity values and moderately strong winds for the Rio Grande Valley Plains and portions of the Upper Valley and northern Ranchlands. A window of enhanced wildfire growth and spread potential will occur Wednesday afternoon from noon to around 6 PM.

NOAA Brownsville TX Office: Watches - Warnings - Advisories
TX...Wind Advisory until 5pm CST this afternoon for TXZ254-255-354- 355.

High Rip Current Risk through late tonight for TXZ451-454-455.

GM...Small Craft Advisory until 6pm CST this evening for GMZ130-132- 135.

Small Craft Advisory until midnight CST tonight for GMZ150-155- 170-175.