Marine Weather Net

Bay and Waterways from Port Aransas to Port O'Connor Marine Forecast


REST OF TODAY

S
WINDS
5 - 10
KNOTS

TONIGHT

S
WINDS
10 - 15
KNOTS

WEDNESDAY

SW
WINDS
10 - 15
KNOTS

WEDNESDAY NIGHT

N
WINDS
20 - 25
KNOTS

The Marine Weather Forecast In Detail:
GMZ235 Forecast Issued: 1059 AM CDT Tue Apr 05 2022

Rest Of Today...South Wind 5 To 10 Knots. Bays Smooth. Patchy Fog Late In The Morning.
Tonight...South Wind 10 To 15 Knots. Bays Slightly Choppy To Occasionally Choppy. Patchy Fog In The Evening, Then Areas Of Fog After Midnight.
Wednesday...Southwest Wind 10 To 15 Knots Becoming North 15 To 20 Knots In The Afternoon. Bays Choppy To Occasionally Rough.
Wednesday Night...North Wind 20 To 25 Knots. Bays Choppy To Rough.
Thursday...North Wind 15 To 20 Knots. Bays Choppy To Occasionally Rough.
Thursday Night...Northeast Wind 10 To 15 Knots. Bays Slightly Choppy To Occasionally Choppy.
Friday...Northwest Wind 10 To 15 Knots Shifting West In The Afternoon. Bays Slightly Choppy To Occasionally Choppy.
Friday Night...South Wind 10 To 15 Knots. Bays Slightly Choppy To Occasionally Choppy.
Saturday...South Wind 10 To 15 Knots Increasing To 15 To 20 Knots In The Afternoon. Bays Choppy.
Saturday Night...South Wind Around 20 Knots. Bays Choppy To Occasionally Rough.
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Area Forecast Discussion
National Weather Service Corpus Christi TX
1226pm CDT Tuesday Oct 6 2026

Issued at 1224pm CDT Tuesday Oct 6 2026

Weak mid level ridging and a slightly drier airmass across S TX will keep rain chances very low to nil through the week. However, a broad mid level trough draped across the gulf waters and a broad surface low across the Bay of Campeche will continue to bring a medium to high chance of showers and thunderstorms to the Middle Texas Coastal Waters through the end of the work week. But all of this is highly dependent on whether or not a tropical system develops across the Bay of Campeche. The National Hurricane Center now has a 90% chance of development. If it does develop, it is expected to move north or northeast, keeping the system far east of S TX. This typically results in drier conditions on the west side of the system. Can not rule out an isolated morning or sea breeze shower each day. The drier conditions may also lead to much warmer temperatures across S TX.

A mid/upper level cut off low is forecast to track/develop across West TX which would provide upper support for convective development across Mexico on Thu/Fri. This convection has a low to very low chance of moving across the Rio Grande and into western Webb County.

The main concern if a tropical system develops over the gulf will be an increased risk of coastal flooding, moderate to high rip current risk and seas possibly building up to 9-10 feet. Currently a Coastal Flood Advisory is in effect through this evening due to a persistent northeast flow across the northwest gulf waters pushing water up to the dunes during times of high tide. Will not extend the advisory through tonight and not expecting coastal flooding on Wednesday as winds across the gulf waters will be lighter. The last high tide earlier today reached just shy of 2 feet MSL and is expected to reach around 1.4-1.7 feet MSL with the next high tide. Additional Coastal Flood Advisories may be needed the latter part of the week depending on tropical development in the gulf. Some models indicate swell periods may increase to 9-10 seconds by Friday along with seas building to 9-10 feet or higher due to a strengthening northeast flow over the gulf waters. This will provide sufficient energy to push the water up to the dunes. If the winds strengthen to 25-30 knots with seas building to around 12 feet, then tide levels at high tide could reach 3 feet MSL and a Coastal Flood Warning would be needed. However, chances are low that this will occur, but will continue to monitor trends and possible tropical development.

Marine
Issued at 1224pm CDT Tuesday Oct 6 2026

Northeasterly winds at moderate to fresh (BF 4-5) levels continue through Wednesday before increasing to fresh and strong levels Thursday, especially offshore. Winds later in the week are expected to subside a bit. Late week conditions may be influenced by potential tropical development. Keep up to date with the latest forecasts.

Fire Weather
Issued at 1224pm CDT Tuesday Oct 6 2026

No significant fire weather concerns are anticipated through the work week with mainly moderate humidity levels and weak winds. Rain chances are low to very low, mainly along the Coastal Bend through the week and the upcoming weekend.

NOAA Corpus Christi TX Office: Watches - Warnings - Advisories
TX...Coastal Flood Advisory until 7pm CDT this evening for TXZ345- 442-443-447.

GM...None.