Marine Weather for GM 330

Active Advisory: (US Severe Weather)
Forecast as of 4:12 am CDT on September 18, 2019
Small craft should exercise caution
Matagorda Bay-
Today
Southwest winds 15 to 20 knots decreasing to 10 to 15 knots in the afternoon. Bay waters slightly choppy. Showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall.
Tonight
South winds 10 to 15 knots becoming southwest 15 to 20 knots after midnight. Bay waters slightly choppy becoming choppy after midnight. A slight chance of showers and thunderstorms. Some thunderstorms may produce heavy rainfall.
Thursday
South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall.
Thursday Night
South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and thunderstorms.
Friday
South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms.
Friday Night
Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms after midnight.
Saturday
Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms.
Saturday Night
Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and thunderstorms after midnight.
Sunday
Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A slight chance of showers and thunderstorms.
Sunday Night
Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and thunderstorms after midnight.

Watches & Warnings

Marine Warning
Issued: 8:13 AM CDT Sep. 18, 2019 – National Weather Service

The National Weather Service in League City has issued a

* special marine warning for...
coastal waters from Freeport to Matagorda Ship Channel TX out 20
nm...
coastal waters from High Island to Freeport TX out 20 nm...
Galveston Bay...
Matagorda Bay...
waters from Freeport to Matagorda Ship Channel TX from 20 to 60
nm...
waters from High Island to Freeport TX from 20 to 60 nm...

* until 915 am CDT.

* At 811 am CDT... severe thunderstorms capable of producing
waterspouts were located along a line extending from near tabs buoy
f to near Galveston a21 to Galveston 344 to 7 nm northeast of
Matagorda Ship Channel... moving nearly stationary.

Hazard... waterspouts and wind gusts 34 knots or greater.

Source... radar.

Impact... waterspouts can easily overturn boats and create locally
           hazardous seas. Small craft could be damaged in briefly
           higher winds and suddenly higher waves.

* Locations impacted include...
Galveston a8... heald bank... tabs buoy b... Galveston Bay entrance...
Brazos 439... Galveston 344... Galveston 424... offatts bayou...
Galveston 221... Galveston pier 21... Galveston 282...
High Island 157... Galveston causeway... tabs buoy W...
High Island 63... High Island a179... Surfside jetty... Bastrop Bay...
Christmas Bay and East Matagorda Bay.

Precautionary/preparedness actions...

Move to safe Harbor immediately as gusty winds and high waves are
expected.

Thunderstorms can produce sudden waterspouts. Waterspouts can easily
overturn boats and create locally hazardous seas. Seek safe Harbor
immediately.


Lat... Lon 2865 9445 2830 9526 2842 9564 2831 9612
      2848 9625 2875 9578 2878 9565 2893 9534
      2906 9524 2938 9485 2957 9445 2954 9446
      2956 9437 2893 9415
time... Mot... loc 1311z 048deg 18kt 2890 9425 2862 9492 2873 9529 2849
9622

Waterspout... possible
hail... 0.00in
wind... >34kts




813 am CDT Wed Sep 18 2019

The National Weather Service in League City has issued a

* special marine warning for...
coastal waters from Freeport to Matagorda Ship Channel TX out 20
nm...
coastal waters from High Island to Freeport TX out 20 nm...
Galveston Bay...
Matagorda Bay...
waters from Freeport to Matagorda Ship Channel TX from 20 to 60
nm...
waters from High Island to Freeport TX from 20 to 60 nm...

* until 915 am CDT.

* At 811 am CDT... severe thunderstorms capable of producing
waterspouts were located along a line extending from near tabs buoy
f to near Galveston a21 to Galveston 344 to 7 nm northeast of
Matagorda Ship Channel... moving nearly stationary.

Hazard... waterspouts and wind gusts 34 knots or greater.

Source... radar.

Impact... waterspouts can easily overturn boats and create locally
           hazardous seas. Small craft could be damaged in briefly
           higher winds and suddenly higher waves.

* Locations impacted include...
Galveston a8... heald bank... tabs buoy b... Galveston Bay entrance...
Brazos 439... Galveston 344... Galveston 424... offatts bayou...
Galveston 221... Galveston pier 21... Galveston 282...
High Island 157... Galveston causeway... tabs buoy W...
High Island 63... High Island a179... Surfside jetty... Bastrop Bay...
Christmas Bay and East Matagorda Bay.

Precautionary/preparedness actions...

Move to safe Harbor immediately as gusty winds and high waves are
expected.

Thunderstorms can produce sudden waterspouts. Waterspouts can easily
overturn boats and create locally hazardous seas. Seek safe Harbor
immediately.


Lat... Lon 2865 9445 2830 9526 2842 9564 2831 9612
      2848 9625 2875 9578 2878 9565 2893 9534
      2906 9524 2938 9485 2957 9445 2954 9446
      2956 9437 2893 9415
time... Mot... loc 1311z 048deg 18kt 2890 9425 2862 9492 2873 9529 2849
9622

Waterspout... possible
hail... 0.00in
wind... >34kts




Marine Weather

Marine Weather Links

Middle Texas coastal waters from Baffin Bay to Matagorda Ship Channel out to 60 nautical miles.

Lower Texas coastal waters from Baffin Bay to the mouth of the Rio Grande out to 60 nm.

Upper Texas coastal waters from High Island to the Matagorda Ship Channel out 60 nautical miles including Galveston and Matagorda bays

Gulf coastal waters from the mouth of the Suwannee River to Destin out to 60 nm

Pascagoula to Atchafalaya River out 60 nm

Coastal waters from lower Atchafalaya to High Island TX out 60 nm

Gulf coastal waters Destin to Pascagoula out 60 nm

Fornia waters from 60 nm to 250 nm offshore.

Marine & Boating Location Search

Enter a coastal zip code for marine weather.

Coastal Water Temperatures

Place Temperature
Matagorda Bay Port O'Connor, TX 84.0 °F
Seadrift, TX 82.9 °F
USCG Freeport, TX 79.0 °F

Open Sea Buoy Information

Place ID Sea Temp Wave Height
FREEPORT, TX NM South of Freeport, TX 42019 84 °F 1.97 ft
GALVESTON,TX NM East of Galveston, TX 42035
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Click the Station ID for daily observations and history.

C-MAN Station Information

Place ID Water Temp Wave Height
Port Aransas, TX PTAT2 85 °F
-

Tide Information

Date Time Tide Type Height
Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas:  
2019-09-18 04:17 PM CDT Low Tide 0.43
2019-09-19 02:00 AM CDT High Tide 0.91
2019-09-19 05:18 PM CDT Low Tide 0.37
Port O'Connor, Matagorda Bay, Texas:  
2019-09-18 02:54 PM CDT Low Tide 0.59
2019-09-19 01:46 AM CDT High Tide 1.10
2019-09-19 03:37 PM CDT Low Tide 0.54
Seadrift, San Antonio Bay, Texas:  
2019-09-18 03:00 PM CDT High Tide 0.38
2019-09-18 09:26 PM CDT Low Tide 0.31
2019-09-19 03:14 AM CDT High Tide 0.36
2019-09-19 08:31 AM CDT Low Tide 0.34
2019-09-19 02:17 PM CDT High Tide 0.40
2019-09-19 09:48 PM CDT Low Tide 0.29