Port Update
Corpus Christi, TX
August 21, 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
1226 AM CDT Thu Aug 21, 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 highest1/3 of the waves
...along with occasional height of the average highest 10 percent of the waves.
GMZ200-211815-
1226 AM CDT Thu Aug 21, 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.
Rain chances increase to moderate to high Thursday through Saturday with lingering showers/storms Sunday.
Drier conditions are expected early next week.
$$
GMZ236-237-211815- Copano, Aransas, and Redfish Bays- San Antonio, Mesquite, and Espiritu Santo Bays-
1226 AM CDT Thu Aug 21 2025
.TODAY...Northwest winds around 5 knots, becoming east early this afternoon, then becoming southeast late. Bay and inland waters smooth.
A slight chance of showers and thunderstorms until late afternoon, then a chance of showers and thunderstorms late.
.TONIGHT...Southeast winds around 5 knots, becoming west around 5 knots after midnight. Bay and inland waters smooth. A chance of showers and thunderstorms.
.FRIDAY...Northwest winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...Southeast winds around 5 knots, becoming south around 5 knots after midnight. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SATURDAY...Northwest winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth. A chance of showers. A chance of thunderstorms after midnight.
.SUNDAY...North winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth.
.MONDAY...South winds around 5 knots, becoming southeast in the afternoon. Bay and inland waters smooth.
.MONDAY NIGHT...South winds 5 to 10 knots. Bay and inland waters smooth.
Winds and waves higher in and near thunderstorms.
$$
GMZ231-232-211815- Baffin Bay and Upper Laguna Madre-Corpus Christi and Nueces Bays-
1226 AM CDT Thu Aug 21 2025
.TODAY...West winds around 5 knots, becoming northwest late this morning, then becoming east this afternoon. Bay and inland waters smooth. A slight chance of showers and thunderstorms this afternoon.
.TONIGHT...Southeast winds 5 to 10 knots, becoming southwest after midnight. Bay and inland waters smooth. A chance of showers and thunderstorms.
.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.
A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight.
.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. A chance of showers. A chance of thunderstorms after midnight.
.SUNDAY...Northwest winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms.
.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.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
Winds and waves higher in and near thunderstorms.
$$
GMZ255-211815- Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM-
1226 AM CDT Thu Aug 21 2025
.TODAY...West winds around 5 knots, becoming northwest late this morning, then becoming northeast around 5 knots early this afternoon, becoming southeast around 5 knots late. 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, mainly this morning.
.TONIGHT...Southeast 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 showers and thunderstorms.
.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...Northwest winds around 5 knots, becoming northeast 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. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms 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 in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less.
.MONDAY...South winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet or less.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ250-211815- Coastal waters from Baffin Bay to Port Aransas out 20 NM-
1226 AM CDT Thu Aug 21 2025
.TODAY...West winds around 5 knots, becoming northwest late this morning, then becoming northeast early this afternoon, becoming southeast around 5 knots late. Seas around 2 feet or less.
Wave Detail: East 1 foot at 4 seconds. A slight chance of showers and thunderstorms early this morning. A slight chance of showers and thunderstorms late.
.TONIGHT...Southeast winds around 5 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 around 5 knots in the afternoon. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers and thunderstorms, mainly in the morning.
.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 slight chance of showers and thunderstorms 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: Southeast 1 foot at 3 seconds. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms 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 in the morning.
.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 or less, then around 2 feet in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ270-275-211815- 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-
1226 AM CDT Thu Aug 21 2025
.TODAY...West winds around 5 knots, becoming northwest late this morning, then becoming north early this afternoon, becoming east late. 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 early this morning, then a chance of showers and thunderstorms late this morning.
A slight chance of showers and thunderstorms early this afternoon.
.TONIGHT...Southeast 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 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. A chance of showers and thunderstorms, mainly in the morning.
.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, then a chance of showers with a slight chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds around 5 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms 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 in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less.
.MONDAY...South winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet or less. A chance of showers and thunderstorms in the morning.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
Attachments
- MSIB 111-23, Gangway Safety Requirements (1).pdf(130 KB )
- MSIB 76-25, Port of Harlingen, Dock Construction (1).pdf(264 KB )
- MSIB 77-25, Lydia Ann Regatta 2025 (1).pdf(407 KB )
- MSIB 17-25_Vessel Surge Recommendations (1).pdf(1.87 MB )
- MSIB 90-24 Harbor Bridge Construction (1).pdf(940 KB )
- MSIB 36-25 Hurricane Preparedness final (1).pdf(4.69 MB )
