Port Update
Corpus Christi, TX
August 20, 2025
Notices
🌅SUNRISE: 0700 hrs.
🌄SUNSET: 2000 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 17-25 regarding Vessel Surge Events – Safety Recommendations from the U.S. Coast Guard.
Please read attached Vessel Surge Recommendations.
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Please find attached MSIB 111-23 for GANGWAY SAFETY REQUIREMENTS
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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.
==================================
Please find attached 77-25 as the Lydia Ann Lighthouse Regatta will take place in the Lydia
Ann Channel and GCIWW ending in Rockport Yacht Club Saturday August 23, 2025 between hours of 1300 – 1700.
Please see attached for more information.
Weather / Marine Zone Forecast
Coastal Waters Forecast for Texas National Weather Service Corpus Christi TX
1250 PM CDT Wed Aug 20 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.
GMZ200-210615-
1250 PM CDT Wed Aug 20 2025
.SYNOPSIS FOR THE MIDDLE TEXAS COASTAL WATERS...
A variable light to gentle breeze (BF 2-3) is expected to prevail through early next week.
Low rain chances today will increase to moderate to high as we head toward the weekend followed by low chances again early next week.
$$
GMZ236-237-210615- Copano, Aransas, and Redfish Bays- San Antonio, Mesquite, and Espiritu Santo Bays-
1250 PM CDT Wed Aug 20 2025
.TONIGHT...Southeast winds 5 to 10 knots, becoming southwest late. Bay and inland waters smooth. A slight chance of showers and thunderstorms late.
.THURSDAY...Northwest winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth.
A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon.
.THURSDAY NIGHT...South winds around 5 knots, becoming west after midnight. Bay and inland waters smooth. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight.
.FRIDAY...Northwest winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...Southeast winds around 5 knots, becoming south around 5 knots after midnight. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SATURDAY...Northwest winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth.
.SUNDAY...Northwest winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth.
.MONDAY...Southwest winds around 5 knots, becoming southeast in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms in the morning.
.MONDAY NIGHT...South winds 5 to 10 knots. Bay and inland waters smooth.
Winds and waves higher in and near thunderstorms.
$$
GMZ231-232-210615- Baffin Bay and Upper Laguna Madre-Corpus Christi and Nueces Bays-
1250 PM CDT Wed Aug 20 2025
.TONIGHT...Southeast winds 5 to 10 knots, becoming southwest late. Bay and inland waters smooth.
.THURSDAY...West winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms in the afternoon.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth.
A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.
.FRIDAY...West winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SATURDAY...Southwest winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth.
.SUNDAY...Northwest winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth.
.MONDAY...South winds around 5 knots, becoming southeast in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
Winds and waves higher in and near thunderstorms.
$$
GMZ255-210615- Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM-
1250 PM CDT Wed Aug 20 2025
.TONIGHT...Southeast winds around 5 knots, becoming southwest late. Seas around 2 feet or less. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms late.
.THURSDAY...Northwest winds around 5 knots, becoming southeast around 5 knots in the afternoon. Seas around 2 feet or less. Wave Detail: West 1 foot at 2 seconds and southeast 1 foot at 3 seconds.
A chance of showers and thunderstorms.
.THURSDAY NIGHT...South winds around 5 knots, becoming southwest after midnight. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of thunderstorms.
A chance of showers in the evening, then showers likely after midnight.
.FRIDAY...Northwest winds around 5 knots, becoming east in the afternoon. Seas around 2 feet or less. Wave Detail: West 1 foot at 2 seconds. A chance of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...Southeast winds around 5 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 3 seconds.
A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight.
.SATURDAY...West winds around 5 knots, becoming east in the afternoon. Seas around 2 feet or less. Wave Detail: South 1 foot at 3 seconds. A chance of thunderstorms. Showers likely, mainly in the morning.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less. A chance of showers after midnight.
.SUNDAY...Northwest winds around 5 knots, becoming east in the afternoon. Seas around 2 feet or less. A chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less, then around 2 feet after midnight.
.MONDAY...Southwest winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet or less, then around 2 feet in the afternoon. A chance of showers and thunderstorms in the morning.
.MONDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ250-210615- Coastal waters from Baffin Bay to Port Aransas out 20 NM-
1250 PM CDT Wed Aug 20 2025
.TONIGHT...Southeast winds 5 to 10 knots, becoming southwest late. Seas around 2 feet or less. Wave Detail: East 1 foot at 4 seconds.
.THURSDAY...West winds around 5 knots, becoming east in the afternoon. Seas around 2 feet or less. Wave Detail: East 1 foot at 4 seconds. A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 3 seconds.
A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.
.FRIDAY...West winds around 5 knots, becoming east in the afternoon. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers and thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers.
A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight.
.SATURDAY...West winds around 5 knots, becoming east in the afternoon. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers and thunderstorms in the morning.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less. A chance of showers after midnight.
.SUNDAY...West winds around 5 knots, becoming east in the afternoon. Seas around 2 feet or less. A chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet.
.MONDAY...South winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet. A chance of showers and thunderstorms in the morning.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ270-275-210615- 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-
1250 PM CDT Wed Aug 20 2025
.TONIGHT...Southeast winds around 5 knots, becoming southwest late. Seas around 2 feet or less. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms late.
.THURSDAY...West winds around 5 knots, becoming northeast around 5 knots in the afternoon. Seas around 2 feet or less. Wave Detail: West 1 foot at 2 seconds and east 1 foot at 3 seconds.
A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...South winds around 5 knots, becoming southwest after midnight. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 3 seconds.
A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.
.FRIDAY...West winds around 5 knots, becoming north in the afternoon. Seas around 2 feet or less. Wave Detail: South 1 foot at 3 seconds. Showers likely with a chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...Southeast winds around 5 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: East 1 foot at 2 seconds.
A slight chance of showers in the evening, then a chance of showers and thunderstorms after midnight.
.SATURDAY...West winds around 5 knots, becoming northeast in the afternoon. Seas around 2 feet or less. Wave Detail: South 1 foot at 3 seconds. Showers likely with a chance of thunderstorms in the morning.
.SATURDAY NIGHT...Southeast winds around 5 knots, becoming south after midnight. Seas around 2 feet or less. A chance of showers after midnight.
.SUNDAY...West winds around 5 knots, becoming northeast in the afternoon. Seas around 2 feet or less. A chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet.
.MONDAY...Southwest winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet. A chance of showers and thunderstorms in the morning.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
Attachments
- MSIB 77-25, Lydia Ann Regatta 2025.pdf(407 KB )
- MSIB 111-23, Gangway Safety Requirements.pdf(130 KB )
- MSIB 76-25, Port of Harlingen, Dock Construction.pdf(264 KB )
- MSIB 17-25_Vessel Surge Recommendations.pdf(1.87 MB )
- MSIB 90-24 Harbor Bridge Construction.pdf(940 KB )
- MSIB 36-25 Hurricane Preparedness final.pdf(4.69 MB )
