Marine Weather Net

Port Aransas to Matagorda Ship Channel Marine Forecast


TODAY

W
WINDS
20 - 25
KNOTS

TONIGHT

W
WINDS
25
KNOTS

FRIDAY

W
WINDS
20 - 25
KNOTS

FRIDAY NIGHT

W
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
GMZ255 Forecast Issued: 327 AM CDT Thu Oct 28 2021

GALE WARNING IN EFFECT THROUGH LATE TONIGHT ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING...
Today...Northwest Wind 20 To 25 Knots Increasing To 25 To 30 Knots Late With Gusts To Around 40 Knots. Seas 4 To 6 Feet With Occasional Seas Up To 8 Feet.
Tonight...Northwest Wind 25 To 30 Knots With Gusts To Around 45 Knots. Seas 4 To 6 Feet With Occasional Seas Up To 8 Feet.
Friday...Northwest Wind 20 To 25 Knots. Seas 3 To 5 Feet With Occasional Seas Up To 6 Feet.
Friday Night...Northwest Wind 15 To 20 Knots Becoming North 10 To 15 Knots After Midnight. Seas 2 To 4 Feet With Occasional Seas Up To 5 Feet.
Saturday...North Wind 10 To 15 Knots Decreasing To 5 To 10 Knots In The Afternoon. Seas 2 To 3 Feet.
Saturday Night...Southeast Wind 5 To 10 Knots. Seas 2 Feet.
Sunday...Southeast Wind 10 To 15 Knots. Seas 2 To 3 Feet.
Sunday Night...Southeast Wind 10 To 15 Knots. Seas 2 To 3 Feet.
Monday...Southeast Wind 10 To 15 Knots. Seas 2 To 4 Feet With Occasional Seas Up To 5 Feet.
Monday Night...Southeast Wind 10 To 15 Knots. Seas 2 To 3 Feet.
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Synopsis for Middle Texas coastal waters from Baffin Bay to Matagorda ship channel - GMZ200
327 AM CDT Thu Oct 28 2021

Strong to very strong northwesterly flow will persist through today and tonight. A Gale Warning is in effect through Friday morning. Winds will begin to weaken Friday morning, with Small Craft Advisory conditions expected. Flow will then weaken to moderate to strong by late Friday and then weak to moderate by Saturday before turning onshore early Sunday. Dry conditions are expected to persist into next week.
Area Forecast Discussion
National Weather Service Corpus Christi TX
546am CDT Thu Oct 28 2021

/Issued 357am CDT Thu Oct 28 2021/

Short Term - Today Through Friday
A high-amplitude trough just to the east with a surface high pressure to the west will result in a strong pressure gradient today. Winds will be strong to very strong across South Texas and over the Coastal Waters. Winds could gust to around 40 mph across the northeastern counties, so a Wind Advisory has been issued for today. Dry air will persist, with minimum RH values in the teens across the west and around 20 to 30 percent across the east. Though fuels are still green, finer fuels will be dry, so with the potential for Elevated Fire Weather conditions, so have issued an RFD for all counties except for Webb and La Salle counties from 15Z through 00Z. Winds should begin to diminish around midday Friday but will remain moderate to strong through Friday. Hopefully, this will help limit some of the Fire Weather concerns.

With the continued north to northwesterly flow, cooler daytime temperatures are expected, with highs in the low to mid 80s for today and Friday. Clear skies will lead to a cooler night tonight, with lows in the upper 40s to mid 50s over South Texas.

Long Term - Friday night through Wednesday
Quasi-zonal flow will be the dominant synoptic pattern through the long-term period. Daytime temperatures will generally be in the 80s through the next week. Areas in the Rio Grande Plains may reach into the low 90s on Sunday. Nighttime temperatures will be cooler through the weekend, with lows falling into the mid 40s to mid 50s. Southeasterly flow will return Sunday, allowing nighttime temperatures to become more mild going into the work week. The aforementioned southeasterly winds will bring in slightly warmer and more humid air to start off the work week. Mostly clear skies will give way to partly cloudy skies as moisture increases in the mid-upper levels.

Next shot at rain chances may be later in the week next week as another cold front approaches South Texas Thursday/Friday, bringing a slight chance of showers along with it. Lowered Probability of Precipitation from NBM and blended with the previous forecast, as uncertainty still remains with the timing and strength of the front, as well as with how much moisture will be available ahead of the front.

Marine

Strong to very strong northwesterly flow will persist through today and tonight. A Gale Warning is in effect through Friday morning. Winds will begin to weaken Friday morning, with Small Craft Advisory conditions expected. Flow will then weaken to moderate to strong by late Friday and then weak to moderate by Saturday before turning onshore early Sunday. Dry conditions are expected to persist into next week.

NOAA Corpus Christi TX Office: Watches - Warnings - Advisories
TX...Wind Advisory until 7pm CDT this evening For the following zones: Calhoun Islands...Coastal Aransas...Coastal Calhoun...Coastal Refugio...Inland Calhoun...Victoria.

GM...Small Craft Advisory from 5am to 7am CDT Friday For the following zones: Coastal waters from Baffin Bay to Port Aransas out 20 NM...Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM...Waters from Baffin Bay to Port Aransas from 20 to 60 NM...Waters from Port Aransas to Matagorda Ship Channel from 20 to 60 NM.

Gale Warning until 5am CDT Friday For the following zones: Coastal waters from Baffin Bay to Port Aransas out 20 NM... Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM...Waters from Baffin Bay to Port Aransas from 20 to 60 NM...Waters from Port Aransas to Matagorda Ship Channel from 20 to 60 NM.

Small Craft Advisory until 1am CDT Friday For the following zones: Bays and Waterways from Baffin Bay to Port Aransas... Bays and Waterways from Port Aransas to Port O'Connor.