Port Update
Corpus Christi, TX
September 23, 2025
Notices
🌅SUNRISE: 0715 hrs.
🌄SUNSET: 1930 hrs.
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Central Daylight Time
GMT-5
MARSEC LEVEL 1
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When Outbound Passages are restricted to pilot boarding no earlier than Sunrise and later than the time detailed below for the various locations:
FROM VIOLA BASIN: -5 1/2 HOURS BEFORE SUNSET
FROM TULE BASIN: - 5 HOURS BEFORE SUNSET
FROM CHEMICAL BASIN: 4 1/2 HOURS BEFORE SUNSET
FROM AVERY BASIN: 4 HOURS BEFORE SUNSET
FROM MAIN BASIN: 3 1/2 HOURS BEFORE SUNSET
FROM INGLESIDE: 2 1/2 HOURS BEFORE SUNSET
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PORT OF CORPUS CHRISTI OPEN
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Please see attached MSIB 90-24 The Coast Guard is advising all mariners to exercise caution and remain within the skin of the ship while transiting under the Corpus Christi New Harbor Bridge due to fall hazards created during construction.
It is recommended practice until further notice to ensure safety of vessel and crew during transit.
Please see attached for more information.
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Please find attached MSIB 36-25 as the 2025 Hurricane Season commences 1st JUNE and continues thru 30 NOVEMBER.
Please see attached for more information.
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Please find attached MSIB 76-25 as the Port of Harlingen noticed the Coast Guard that construction has begun on their main dock in the turning basin, work commenced 4 August 2025 and will continue through 25 April 2026.
Monday – Saturday 0700 to 1730.
Please see attached for more information.
Weather / Marine Zone Forecast
Coastal Waters Forecast for Texas National Weather Service Corpus Christi TX
1234 AM CDT Tue Sep 23 2025
Middle Texas coastal waters from Baffin Bay to Matagorda ship channel out to 60 nautical miles.
Seas are provided as a range of the average height of the highest 1/3 of the waves
...along with occasional height of the average highest 10 percent of the waves.
GMZ200-231815-
1234 AM CDT Tue Sep 23 2025
.SYNOPSIS FOR THE MIDDLE TEXAS COASTAL WATERS...
Gentle to moderate (BF 3-4) onshore flow will continue through Wednesday night before shifting to the north/northeast briefly on
Thursday as a cold front moves across the waters before returning to onshore flow Thursday night or Friday morning.
Medium to high (30-70%) chances for showers and thunderstorms are expected daily across the waters.
$$
GMZ236-237-231815- Copano, Aransas, and Redfish Bays- San Antonio, Mesquite, and Espiritu Santo Bays-
1234 AM CDT Tue Sep 23 2025
.TODAY...South winds 10 to 15 knots. Bay and inland waters slightly choppy to occasionally choppy. A slight chance of thunderstorms.
A chance of showers early this morning, then a slight chance of showers late this morning and afternoon.
.TONIGHT...South winds 10 to 15 knots. Bay and inland waters slightly choppy to occasionally choppy.
.WEDNESDAY...South winds 5 to 10 knots. Bay and inland waters smooth. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay and inland waters smooth. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight.
.THURSDAY...North winds 5 to 10 knots. Bay and inland waters smooth to slightly choppy. A chance of thunderstorms. Showers likely, mainly in the morning.
.THURSDAY NIGHT...East winds around 5 knots, becoming north after midnight. Bay and inland waters smooth to slightly choppy. A chance of showers in the evening.
.FRIDAY...North winds 5 to 10 knots, becoming northeast in the afternoon. Bay and inland waters smooth to slightly choppy.
.FRIDAY NIGHT...East winds 5 to 10 knots. Bay and inland waters smooth.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east in the afternoon. Bay and inland waters smooth.
.SATURDAY NIGHT...East winds 5 to 10 knots. Bay and inland waters smooth.
Winds and waves higher in and near thunderstorms.
$$
GMZ231-232-231815- Baffin Bay and Upper Laguna Madre-Corpus Christi and Nueces Bays-
1234 AM CDT Tue Sep 23 2025
.TODAY...South winds 10 to 15 knots with gusts up to 20 knots. Bay and inland waters slightly choppy to occasionally choppy. A slight chance of showers and thunderstorms.
.TONIGHT...Southeast winds 10 to 15 knots. Bay and inland waters slightly choppy to occasionally choppy.
.WEDNESDAY...Southeast winds 10 to 15 knots. Bay and inland waters slightly choppy to occasionally choppy. A chance of showers.
A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots, becoming south 5 to 10 knots after midnight. Bay and inland waters slightly choppy to occasionally choppy.
A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight.
.THURSDAY...North winds 5 to 10 knots, becoming northeast in the afternoon. Bay and inland waters smooth to slightly choppy. A chance of thunderstorms. Showers likely, mainly in the morning.
.THURSDAY NIGHT...East winds 5 to 10 knots, becoming southwest after midnight. Bay and inland waters smooth. A chance of showers.
.FRIDAY...North winds 5 to 10 knots, becoming northeast in the afternoon. Bay and inland waters smooth to slightly choppy.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east 10 to 15 knots in the afternoon. Bay and inland waters slightly choppy to occasionally choppy.
.SATURDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Bay and inland waters slightly choppy to occasionally choppy.
Winds and waves higher in and near thunderstorms.
$$
GMZ255-231815- Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM-
1234 AM CDT Tue Sep 23 2025
.TODAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. A chance of showers and thunderstorms, mainly this morning.
.TONIGHT...South winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
.WEDNESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A chance of showers.
A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...South winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A chance of thunderstorms.
A chance of showers in the evening, then showers after midnight.
.THURSDAY...North winds 10 to 15 knots, becoming northeast in the afternoon. Seas around 2 feet. Wave Detail: North 2 feet at 3 seconds and south 2 feet at 5 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
.THURSDAY NIGHT...East winds 5 to 10 knots, becoming northeast after midnight. Seas around 2 feet. Wave Detail: East 1 foot at 5 seconds. A chance of showers.
.FRIDAY...North winds 10 to 15 knots, becoming northeast 5 to 10 knots in the afternoon. Seas around 2 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY...Northeast winds around 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...East winds around 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ250-231815- Coastal waters from Baffin Bay to Port Aransas out 20 NM-
1234 AM CDT Tue Sep 23 2025
.TODAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
A chance of showers and thunderstorms early this morning, then a slight chance of showers and thunderstorms late this morning and early afternoon.
.TONIGHT...Southeast winds around 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots, becoming south 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight.
.THURSDAY...North winds 10 to 15 knots, becoming northeast in the afternoon. Seas around 2 feet. Wave Detail: Northeast 2 feet at 4 seconds and southeast 2 feet at 5 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. A chance of showers.
.FRIDAY...North winds 5 to 10 knots, becoming northeast in the afternoon. Seas around 2 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ270-275-231815- 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-
1234 AM CDT Tue Sep 23 2025
.TODAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A chance of thunderstorms this morning. A chance of showers. A slight chance of thunderstorms this afternoon.
.TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A slight chance of showers and thunderstorms after midnight.
.WEDNESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A chance of showers.
A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight.
.THURSDAY...Northwest winds 10 to 15 knots, becoming northeast in the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 4 seconds and south 2 feet at 5 seconds.
A chance of thunderstorms. Showers, mainly in the morning.
.THURSDAY NIGHT...East winds 5 to 10 knots, becoming northeast after midnight. Seas around 2 feet. Wave Detail: Northeast 2 feet at 4 seconds and southeast 2 feet at 5 seconds. A chance of showers.
A chance of thunderstorms after midnight.
.FRIDAY...North winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers in the morning.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY...Northeast winds around 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet. A chance of showers after midnight.
Winds and seas higher in and near thunderstorms.
