Port Update
Corpus Christi, TX
August 22, 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.
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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.
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Please find attached MSIB 78 – 25 AS SPACEX has informed the U.S. Coast Guard of scheduled commercial spaceflight activities at their facility located south of Brownsville, Tx, near Boca Chica Beach on 24 August 2025 between the hours of 1700 and 2100.
Please see attached for more information.
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Please see attached MSIB 79-25 as the Captain of the Port is establishing a safety zone in the near shore region of the Hazard Area in the Gulf of Mexico extending to 12NM line and all navigable waters of South Bay on 24 August 2025 from 1700 – 2100.
The safety zone is needed to protect personnel, vessels, and the marine environment from potential hazards associated with the rocket launching activities that may include free falling debris and/or descending rockets or rocket components.
Please see attached for more information.
Weather / Marine Zone Forecast
Coastal Waters Forecast for Texas National Weather Service Corpus Christi TX
1224 AM CDT Fri Aug 22 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.
GMZ200-221815-
1224 AM CDT Fri Aug 22 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 becoming a gentle to moderate (BF 3-4) onshore flow by mid-week.
Rain chances remain moderate through the weekend and decrease as we go through next week.
$$
GMZ236-237-221815- Copano, Aransas, and Redfish Bays- San Antonio, Mesquite, and Espiritu Santo Bays-
1224 AM CDT Fri Aug 22 2025
.TODAY...North winds around 5 knots, becoming east early this afternoon, then becoming southeast late. Bay and inland waters smooth. A chance of showers and thunderstorms.
.TONIGHT...Southeast winds around 5 knots, becoming south around 5 knots after midnight. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SATURDAY...North winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming southeast after midnight. Bay and inland waters smooth. A chance of showers.
A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight.
.SUNDAY...Northeast winds around 5 knots, becoming east in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth. A chance of showers and thunderstorms after midnight.
.MONDAY...South winds around 5 knots, becoming southeast in the afternoon. Bay and inland waters smooth. A chance of showers. A chance of thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth. A chance of showers and thunderstorms after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Bay and inland waters smooth. A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
Winds and waves higher in and near thunderstorms.
$$
GMZ231-232-221815- Baffin Bay and Upper Laguna Madre-Corpus Christi and Nueces Bays-
1224 AM CDT Fri Aug 22 2025
.TODAY...Northwest winds around 5 knots, becoming east early this afternoon, then becoming southeast late. Bay and inland waters smooth.
A chance of showers and thunderstorms early this morning, then a slight chance of showers and thunderstorms late this morning. A chance of showers and thunderstorms this afternoon.
.TONIGHT...Southeast winds 5 to 10 knots, becoming south 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...East 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.
.SUNDAY...Northeast 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. A chance of showers and thunderstorms after midnight.
.MONDAY...South winds around 5 knots, becoming southeast in the afternoon. Bay and inland waters smooth. A chance of showers. A chance of thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
.TUESDAY...South winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Bay and inland waters slightly choppy to occasionally choppy. A chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast 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.
$$
GMZ255-221815- Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM-
1224 AM CDT Fri Aug 22 2025
.TODAY...Northwest winds around 5 knots, becoming southeast late. Seas around 2 feet or less. Wave Detail: West 1 foot at 2 seconds.
A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late.
.TONIGHT...Southeast winds around 5 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 3 seconds.
A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.
.SATURDAY...Northwest winds around 5 knots, becoming northeast in the afternoon. Seas around 2 feet or less. Wave Detail: South 1 foot at 3 seconds. A chance of thunderstorms.
A chance of showers.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers.
A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet or less. Wave Detail: South 1 foot at 3 seconds. A chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms after midnight.
.MONDAY...Southeast winds 5 to 10 knots. Seas around 2 feet or less, then around 2 feet in the afternoon. A chance of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds around 10 knots, becoming south after midnight. Seas around 2 feet. A chance of showers and thunderstorms after midnight.
.TUESDAY...South winds 5 to 10 knots. Seas around 2 feet. A chance of thunderstorms in the morning. A chance of showers.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ250-221815- Coastal waters from Baffin Bay to Port Aransas out 20 NM-
1224 AM CDT Fri Aug 22 2025
.TODAY...West winds around 5 knots, becoming northwest around 5 knots late this morning, then becoming northeast early this afternoon, becoming southeast around 5 knots late. Seas around 2 feet or less.
Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers and thunderstorms.
.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.
.SATURDAY...Northwest 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...East 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 with a slight chance of thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 4 seconds. A chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: East 1 foot at 2 seconds and southeast 1 foot at 5 seconds.
A chance of showers and thunderstorms after midnight.
.MONDAY...South 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. A chance of thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers in the morning.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ270-275-221815- 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-
1224 AM CDT Fri Aug 22 2025
.TODAY...West winds around 5 knots, becoming east around 5 knots late. Seas around 2 feet or less. Wave Detail: South 1 foot at 3 seconds.
A chance of showers and thunderstorms until late afternoon, then 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: East 1 foot at 2 seconds. 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. A chance of showers and thunderstorms, mainly in the morning.
.SATURDAY NIGHT...Southeast 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.
A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight.
.SUNDAY...Southeast winds around 5 knots, becoming east in the afternoon. Seas around 2 feet or less. Wave Detail: Southeast 1 foot at 4 seconds. A chance of thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet or less. Wave Detail: East 1 foot at 2 seconds and southeast 1 foot at 5 seconds.
A chance of showers and thunderstorms after midnight.
.MONDAY...South 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...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet. A chance of showers after midnight.
Winds and seas higher in and near thunderstorms.
Attachments
- MSIB 111-23, Gangway Safety Requirements (2).pdf(130 KB )
- MSIB 77-25, Lydia Ann Regatta 2025 (2).pdf(407 KB )
- MSIB 76-25, Port of Harlingen, Dock Construction (2).pdf(264 KB )
- MSIB 17-25_Vessel Surge Recommendations (2).pdf(1.87 MB )
- MSIB 78-25, Hazard Area, Gulf of America and South Bay, TX.pdf(482 KB )
- MSIB 79-25, Safety Zone, Space Operations.pdf(291 KB )
- MSIB 90-24 Harbor Bridge Construction (2).pdf(940 KB )
- MSIB 36-25 Hurricane Preparedness final (2).pdf(4.69 MB )
