Marine Weather Net

Port Aransas to Matagorda Ship Channel 20 - 60 NM Marine Forecast


TODAY

SW
WINDS
15 - 20
KNOTS

TONIGHT

SW
WINDS
10
KNOTS

MONDAY

NE
WINDS
10 - 15
KNOTS

MONDAY NIGHT

SE
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
GMZ275 Forecast Issued: 235 AM CST Sun Nov 27 2022

SMALL CRAFT SHOULD EXERCISE CAUTION
Today...Southwest Winds 15 To 20 Knots, Diminishing To 10 To 15 Knots This Afternoon. Waves 2 To 4 Feet, Occasionally Seas Around 5 Feet.
Tonight...Southwest Winds Around 10 Knots, Becoming North With Gusts Up To 20 Knots After Midnight. Waves 2 To 3 Feet. A Slight Chance Of Showers After Midnight.
Monday...Northeast Winds 10 To 15 Knots, Becoming East In The Afternoon. Waves 2 To 3 Feet.
Monday Night...Southeast Winds 15 To 20 Knots, Becoming South After Midnight. Waves 3 To 5 Feet, Occasionally Seas Up To 6 Feet. A Slight Chance Of Showers.
Tuesday...South Winds 15 To 20 Knots With Gusts Up To 25 Knots. Waves 4 To 6 Feet, Occasionally Seas Up To 8 Feet. A Slight Chance Of Showers And Thunderstorms.
Tuesday Night...South Winds 15 To 20 Knots, Becoming Southwest After Midnight. Waves 4 To 6 Feet, Occasionally Seas Up To 8 Feet.
Wednesday...North Winds 25 To 30 Knots, Becoming Northeast In The Afternoon. Waves 5 To 7 Feet, Occasionally Seas Up To 9 Feet, Building To 8 To 11 Feet, Occasionally Seas Up To 14 Feet In The Afternoon. A Chance Of Showers In The Morning.
Wednesday Night...Northeast Winds 25 To 30 Knots, Diminishing To 20 To 25 Knots After Midnight. Waves 8 To 11 Feet, Occasionally Seas Up To 14 Feet.
Thursday...Northeast Winds Around 20 Knots. Waves 6 To 8 Feet, Occasionally Seas Up To 10 Feet.
Thursday Night...East Winds 15 To 20 Knots. Waves 5 To 6 Feet, Occasionally Seas Up To 8 Feet. Winds And Seas Higher In And Near Thunderstorms.
SHARE THIS PAGE:           
Area Forecast Discussion
National Weather Service Corpus Christi TX
503am CST Sunday Nov 27 2022

Long Term
(Tuesday through next Saturday) Issued at 238am CST Sunday Nov 27 2022

Key Messages:

- Possible sea fog Monday night-Tuesday morning and again the latter part of the week

- Next cold front Wednesday morning

- Gale conditions possible Wednesday through Wednesday evening

- Minor coastal flooding possible Thursday and Friday

A long wave trough extending from Canada and the northern plains to the Desert Southwest is forecast to shift east Tuesday resulting in a southwest flow across S TX. in response to the approaching upper trough, a surface warm front/trough develops and ushers slightly deeper moisture and warmer temperatures across S TX. Highs Tuesday are expected to be in the 80s area-wide. Although moisture increases, it remains limited with only a slight chance of showers across the Coastal areas, with perhaps a thunderstorm or two across the northeastern portions of the CWA (County Warning Area) as the warm front lifts north. In addition, patchy sea fog will be possible across coastal areas as dewpoints increase across the cooler shelf waters through Tuesday. As the upper long wave moves across TX, it will push a cold front through S TX by early Wednesday morning with drier, cooler and windy conditions developing in its wake.

For the latter half of the week, models prog mid/upper level high pressure to be either over S TX or just east of S TX, with the GFS (Global Forecast System) showing a short wave tracking northward across S TX by Friday. Although the models differ slightly in the position of the high pressure, they all agree with some moisture advecting northward along the TX coast as a coastal trough develops Thursday into Friday. The NBM brings a chance of precipitation to the coastal areas, but moisture looks to remain limited through next weekend. Thus, went with generally 10-20 Probability of Precipitation across the eastern CWA Thursday through Saturday. Went slightly higher over the waters east of Baffin Bay Thursday night in response to the approaching short wave and deeper moisture.

With the coastal trough, dewpoints will likely increase dewpoints the latter part of the week and weekend bringing the potential for sea fog to the coastal areas once again, but held off mentioning fog in the forecast as confidence is low this far out. Also, can not rule out minor coastal flooding during high tide Thursday/Friday as moderate winds across the waters become northeast and east.

Marine
Issued at 238am CST Sunday Nov 27 2022

Moderate (15 to 20 knot) southwesterly winds this morning will diminish to 10 to 15 knots this afternoon. Winds will gradually shift to the northeast and east on Monday. A moderate southerly flow will develop Tuesday and the potential for sea fog will continue through Tuesday night ahead of the next cold front. The cold front is expected to move through the area Wednesday with strong northerly winds developing behind it. Gusts to gale will be possible Wednesday through Wednesday evening. Winds will become northeast to east and decrease to moderate levels by Thursday. Isolated to scattered showers and a few thunderstorms will be possible Tuesday through Wednesday. A few lingering showers will be possible Thursday.

NOAA Corpus Christi TX Office: Watches - Warnings - Advisories
TX...None. GM...None.