Port Update
Corpus Christi, TX
August 25, 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.
Weather / Marine Zone Forecast
Coastal Waters Forecast for Texas National Weather Service Corpus Christi TX
1230 AM CDT Mon Aug 25 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.
GMZ200-251815-
1230 AM CDT Mon Aug 25 2025
.SYNOPSIS FOR THE MIDDLE TEXAS COASTAL WATERS...
Generally, a light to gentle (BF 2-3) onshore flow will prevail through the period.
Brief gentle to moderate (BF 3-4) wind will be possible at times across the bays and nearshore waters south of Port Aransas each afternoon.
Rain chances are medium through the middle of next week then decrease to low the latter half of the week.
$$
GMZ236-237-251815- Copano, Aransas, and Redfish Bays- San Antonio, Mesquite, and Espiritu Santo Bays-
1230 AM CDT Mon Aug 25 2025
.TODAY...East winds around 5 knots, increasing to around 10 knots this afternoon. Bay and inland waters smooth. A slight chance of showers and thunderstorms early this afternoon.
.TONIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Bay and inland waters smooth. A slight chance of showers and thunderstorms after midnight.
.TUESDAY...South winds around 5 knots, becoming southeast in the afternoon. Bay and inland waters smooth. A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay and inland waters smooth. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
.THURSDAY...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
.FRIDAY...South winds 5 to 10 knots. Bay and inland waters smooth.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland waters smooth.
Winds and waves higher in and near thunderstorms.
$$
GMZ231-232-251815- Baffin Bay and Upper Laguna Madre-Corpus Christi and Nueces Bays-
1230 AM CDT Mon Aug 25 2025
.TODAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots late. Bay and inland waters slightly choppy to occasionally choppy. A slight chance of thunderstorms.
.TONIGHT...Southeast winds around 10 knots, becoming south after midnight. Bay and inland waters smooth. A slight chance of showers and thunderstorms after midnight.
.TUESDAY...South winds around 5 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.
.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. A slight chance of showers.
A slight chance of thunderstorms after midnight.
.WEDNESDAY...Southeast 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.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to 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 in the afternoon. Bay and inland waters slightly choppy to occasionally choppy.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay and inland waters slightly choppy to occasionally choppy.
.FRIDAY...South winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Bay and inland waters slightly choppy to occasionally choppy.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay and inland waters slightly choppy to occasionally choppy.
Winds and waves higher in and near thunderstorms.
$$
GMZ255-251815- Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM-
1230 AM CDT Mon Aug 25 2025
.TODAY...East winds 5 to 10 knots. Seas around 2 feet or less, then around 2 feet this afternoon. A slight chance of showers late this morning. A slight chance of showers and thunderstorms early this afternoon.
.TONIGHT...Southeast winds around 10 knots, becoming south after midnight. Seas around 2 feet. A chance of showers and thunderstorms after midnight.
.TUESDAY...South winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet or less, then around 2 feet in the afternoon. A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers in the evening, then a chance of showers and thunderstorms after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet.
.THURSDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY...South winds 5 to 10 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ250-251815- Coastal waters from Baffin Bay to Port Aransas out 20 NM-
1230 AM CDT Mon Aug 25 2025
.TODAY...Southeast winds around 5 knots, becoming east this afternoon. Seas around 2 feet or less. A slight chance of thunderstorms.
.TONIGHT...Southeast winds around 10 knots, becoming south after midnight. Seas around 2 feet. A chance of showers and thunderstorms after midnight.
.TUESDAY...South winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet. A chance of showers and thunderstorms, mainly in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms, mainly in the morning.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet.
.THURSDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
$$
GMZ270-275-251815- 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-
1230 AM CDT Mon Aug 25 2025
.TODAY...East winds 5 to 10 knots. Seas around 2 feet or less, then around 2 feet this afternoon. A chance of thunderstorms this morning. A chance of showers. A slight chance of thunderstorms this afternoon.
.TONIGHT...Southeast winds around 10 knots, becoming south after midnight. Seas around 2 feet. A slight chance of showers in the evening, then a chance of showers and thunderstorms after midnight.
.TUESDAY...South winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet. A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers in the evening, then a chance of showers and thunderstorms after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...Southeast winds around 10 knots, becoming south after midnight. Seas 2 to 3 feet.
.FRIDAY...South winds 5 to 10 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Winds and seas higher in and near thunderstorms.
