Port Update
Corpus Christi, TX
August 27, 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 MSIB 80-25 as The Captain of the Port is establishing a safety zone in the Brownsville Ship Channel. Great Lakes Dredge & Dock
has informed the U.S. Coast Guard that they will be installing submerged pipeline in the Brownsville Ship Channel on 27 August 2025 from 1000 to 1600.
Please see attached for more information.
Weather / Marine Zone Forecast
Coastal Waters Forecast for Texas National Weather Service Corpus Christi TX
1242 AM CDT Wed Aug 27, 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.
GMZ200-271815-
1242 AM CDT Wed Aug 27, 2025
.SYNOPSIS FOR THE MIDDLE TEXAS COASTAL WATERS...
A gentle to moderate breeze (BF 3-4) is expected to continue through mid-week next week.
Low to medium (20-50%) chances for rain tomorrow will decrease to low (under 20%)
Thursday and Friday before rain chances gradually increase Saturday into early next week.
$$
GMZ236-237-271815- Copano, Aransas, and Redfish Bays- San Antonio, Mesquite, and Espiritu Santo Bays-
1242 AM CDT Wed Aug 27 2025
.TODAY...South winds around 5 knots, becoming east late this morning and early afternoon, then becoming southeast late. Bay and inland waters smooth.
A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late.
.TONIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
.THURSDAY...South winds around 5 knots, becoming southeast in the afternoon. Bay and inland waters smooth.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay and inland waters smooth.
.FRIDAY...South winds 5 to 10 knots. Bay and inland waters smooth.
.FRIDAY NIGHT...South winds 5 to 10 knots. Bay and inland waters smooth.
.SATURDAY...South winds 5 to 10 knots, becoming southeast in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth. A chance of showers and thunderstorms after midnight.
.SUNDAY...Northeast winds 5 to 10 knots. Bay and inland waters smooth. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots. Bay and inland waters smooth. A chance of showers after midnight.
Winds and waves higher in and near thunderstorms.
$$
GMZ231-232-271815- Baffin Bay and Upper Laguna Madre-Corpus Christi and Nueces Bays-
1242 AM CDT Wed Aug 27 2025
.TODAY...South winds around 5 knots, becoming east early this afternoon, then becoming southeast 10 to 15 knots late. Bay and inland waters slightly choppy to occasionally choppy.
A slight chance of showers and thunderstorms.
.TONIGHT...Southeast winds 10 to 15 knots, becoming south 5 to 10 knots after midnight. Bay and inland waters slightly choppy to occasionally choppy.
.THURSDAY...South winds 5 to 10 knots, becoming southeast 10 to 15 knots with gusts up to 20 knots in the afternoon. Bay and inland waters slightly choppy to occasionally choppy.
.THURSDAY 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.
.FRIDAY...South winds 5 to 10 knots, becoming southeast 10 to 15 knots with gusts up to 20 knots in the afternoon. Bay and inland waters slightly choppy to occasionally choppy.
.FRIDAY 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.
.SATURDAY...South winds 5 to 10 knots, becoming southeast in the afternoon. Bay and inland waters smooth.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth. A chance of showers and thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Bay and inland waters slightly choppy to occasionally choppy. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots. Bay and inland waters smooth. A chance of showers after midnight.
Winds and waves higher in and near thunderstorms.
$$
GMZ255-271815- Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM-
1242 AM CDT Wed Aug 27 2025
.TODAY...South winds around 5 knots, becoming east late this morning and afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late.
.TONIGHT...Southeast winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds and southeast 2 feet at 6 seconds.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.SATURDAY...South winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet. A chance of showers.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms after midnight.
.SUNDAY...Northeast winds around 10 knots. Seas around 2 feet. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East winds around 10 knots. Seas around 2 feet. A chance of showers.
Winds and seas higher in and near thunderstorms.
$$
GMZ250-271815- Coastal waters from Baffin Bay to Port Aransas out 20 NM-
1242 AM CDT Wed Aug 27 2025
.TODAY...South winds around 5 knots, becoming southeast this afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of showers and thunderstorms.
.TONIGHT...Southeast winds around 10 knots, becoming south after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.THURSDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds.
.FRIDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, becoming south after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.SATURDAY...South winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. A chance of showers after midnight.
Winds and seas higher in and near thunderstorms.
$$
GMZ270-275-271815- 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-
1242 AM CDT Wed Aug 27 2025
.TODAY...Southeast winds around 5 knots, becoming east this afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...South winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.SATURDAY...South winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet. A chance of showers in the morning.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots, becoming northeast in the afternoon. Seas around 2 feet. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East winds around 10 knots. Seas around 2 feet. A chance of showers.
Winds and seas higher in and near thunderstorms.
