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Small Craft Advisory 0066
Issued by the Houston / Galveston Forecast Office

Action Issued Starts Expiration
New 2025-12-03 23:47:37 2025-12-04 14:00:00 2025-12-05 00:00:00
New 2025-12-03 23:47:37 2025-12-04 14:00:00 2025-12-05 00:00:00
Continued 2025-12-04 02:03:12 2025-12-04 14:00:00 2025-12-05 00:00:00
Continued 2025-12-04 02:03:12 2025-12-04 14:00:00 2025-12-05 00:00:00
Continued 2025-12-04 13:13:25 2025-12-04 14:00:00 2025-12-05 00:00:00
Time Extended 2025-12-04 19:31:05 2025-12-05 03:00:00
Continued 2025-12-04 19:31:05 2025-12-05 00:00:00
Continued 2025-12-04 22:58:41 2025-12-05 03:00:00
Time Extended 2025-12-04 22:58:41 2025-12-05 03:00:00


Action: New
Issued At: 2025-12-03 23:47:37

263 
WHUS74 KHGX 040547
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
1147 PM CST Wed Dec 3 2025

GMZ330-350-041400-
/O.EXT.KHGX.MF.Y.0035.000000T0000Z-251204T0900Z/
/O.NEW.KHGX.SC.Y.0066.251204T2000Z-251205T0600Z/
Matagorda Bay-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-
1147 PM CST Wed Dec 3 2025

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 3 AM CST THURSDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM THURSDAY TO MIDNIGHT
CST THURSDAY NIGHT...

* WHAT...For the Dense Fog Advisory, dense fog will reduce
  visibility to 4 to 5 NM. For the Small Craft Advisory, north
  winds 15 to 20 kt with gusts up to 25 kt and rough bay waters expected.

* WHERE...Matagorda Bay and Coastal waters from Freeport to 
  Matagorda Ship Channel TX out 20 NM.

* WHEN...For the Dense Fog Advisory, until 3 AM CST Thursday. 
  For the Small Craft Advisory, from 2 PM Thursday to midnight 
  CST Thursday night.

* IMPACTS...Conditions will be hazardous to small craft. Low
  visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

GMZ335-355-370-375-041400-
/O.NEW.KHGX.SC.Y.0066.251204T2000Z-251205T0600Z/
Galveston Bay-
Coastal waters from High Island to Freeport TX out 20 NM-
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-
1147 PM CST Wed Dec 3 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM THURSDAY TO MIDNIGHT
CST THURSDAY NIGHT...

* WHAT...North winds of 20 kt with gusts up to 25 kt, rough bay
  waters, and seas of 4 to 6 ft with occasionally higher waves.

* WHERE...Portions of Gulf of America.

* WHEN...From 2 PM Thursday to midnight CST Thursday night.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$


Action: New
Issued At: 2025-12-03 23:47:37

263 
WHUS74 KHGX 040547
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
1147 PM CST Wed Dec 3 2025

GMZ330-350-041400-
/O.EXT.KHGX.MF.Y.0035.000000T0000Z-251204T0900Z/
/O.NEW.KHGX.SC.Y.0066.251204T2000Z-251205T0600Z/
Matagorda Bay-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-
1147 PM CST Wed Dec 3 2025

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 3 AM CST THURSDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM THURSDAY TO MIDNIGHT
CST THURSDAY NIGHT...

* WHAT...For the Dense Fog Advisory, dense fog will reduce
  visibility to 4 to 5 NM. For the Small Craft Advisory, north
  winds 15 to 20 kt with gusts up to 25 kt and rough bay waters expected.

* WHERE...Matagorda Bay and Coastal waters from Freeport to 
  Matagorda Ship Channel TX out 20 NM.

* WHEN...For the Dense Fog Advisory, until 3 AM CST Thursday. 
  For the Small Craft Advisory, from 2 PM Thursday to midnight 
  CST Thursday night.

* IMPACTS...Conditions will be hazardous to small craft. Low
  visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

GMZ335-355-370-375-041400-
/O.NEW.KHGX.SC.Y.0066.251204T2000Z-251205T0600Z/
Galveston Bay-
Coastal waters from High Island to Freeport TX out 20 NM-
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-
1147 PM CST Wed Dec 3 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM THURSDAY TO MIDNIGHT
CST THURSDAY NIGHT...

* WHAT...North winds of 20 kt with gusts up to 25 kt, rough bay
  waters, and seas of 4 to 6 ft with occasionally higher waves.

* WHERE...Portions of Gulf of America.

* WHEN...From 2 PM Thursday to midnight CST Thursday night.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-04 02:03:12

761 
WHUS74 KHGX 040802
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
202 AM CST Thu Dec 4 2025

GMZ330-350-041615-
/O.EXT.KHGX.MF.Y.0035.000000T0000Z-251204T1200Z/
/O.CON.KHGX.SC.Y.0066.251204T2000Z-251205T0600Z/
Matagorda Bay-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-
202 AM CST Thu Dec 4 2025

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO MIDNIGHT CST TONIGHT...

* WHAT...For the Dense Fog Advisory, areas of dense fog will
  result in visibility under 1 NM at times. For the Small Craft 
  Advisory, north winds 15 to 20 kt with gusts up to 25 kt and 
  rough bay waters expected.

* WHERE...Matagorda Bay and Coastal waters from Freeport to 
  Matagorda Ship Channel TX out 20 NM.

* WHEN...For the Dense Fog Advisory, until 6 AM CST early this 
  morning. For the Small Craft Advisory, from 2 PM this 
  afternoon to midnight CST tonight.

* IMPACTS...Conditions will be hazardous to small craft. Low 
  visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

GMZ335-355-370-375-041615-
/O.CON.KHGX.SC.Y.0066.251204T2000Z-251205T0600Z/
Galveston Bay-
Coastal waters from High Island to Freeport TX out 20 NM-
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-
202 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO MIDNIGHT CST TONIGHT...

* WHAT...North winds of 20 kt with gusts up to 25 kt, rough bay 
  waters, and seas of 4 to 6 ft with occasionally higher waves.

* WHERE...Portions of Gulf of America.

* WHEN...From 2 PM this afternoon to midnight CST tonight.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-04 02:03:12

761 
WHUS74 KHGX 040802
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
202 AM CST Thu Dec 4 2025

GMZ330-350-041615-
/O.EXT.KHGX.MF.Y.0035.000000T0000Z-251204T1200Z/
/O.CON.KHGX.SC.Y.0066.251204T2000Z-251205T0600Z/
Matagorda Bay-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-
202 AM CST Thu Dec 4 2025

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO MIDNIGHT CST TONIGHT...

* WHAT...For the Dense Fog Advisory, areas of dense fog will
  result in visibility under 1 NM at times. For the Small Craft 
  Advisory, north winds 15 to 20 kt with gusts up to 25 kt and 
  rough bay waters expected.

* WHERE...Matagorda Bay and Coastal waters from Freeport to 
  Matagorda Ship Channel TX out 20 NM.

* WHEN...For the Dense Fog Advisory, until 6 AM CST early this 
  morning. For the Small Craft Advisory, from 2 PM this 
  afternoon to midnight CST tonight.

* IMPACTS...Conditions will be hazardous to small craft. Low 
  visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

GMZ335-355-370-375-041615-
/O.CON.KHGX.SC.Y.0066.251204T2000Z-251205T0600Z/
Galveston Bay-
Coastal waters from High Island to Freeport TX out 20 NM-
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-
202 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO MIDNIGHT CST TONIGHT...

* WHAT...North winds of 20 kt with gusts up to 25 kt, rough bay 
  waters, and seas of 4 to 6 ft with occasionally higher waves.

* WHERE...Portions of Gulf of America.

* WHEN...From 2 PM this afternoon to midnight CST tonight.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-04 13:13:25

361 
WHUS74 KHGX 041912
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
112 PM CST Thu Dec 4 2025

GMZ330-335-350-355-370-375-050600-
/O.CON.KHGX.SC.Y.0066.251204T2000Z-251205T0600Z/
Matagorda Bay-Galveston Bay-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
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-
112 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...North winds around 20 kt with gusts up to 25 kt 
  expected.

* WHERE...Portions of Gulf of America. 

* WHEN...Until midnight CST tonight.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$


Action: Time Extended
Issued At: 2025-12-04 19:31:05

111 
WHUS74 KHGX 050130
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
730 PM CST Thu Dec 4 2025

GMZ350-355-370-375-050900-
/O.EXT.KHGX.SC.Y.0066.000000T0000Z-251205T0900Z/
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
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-
730 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM CST FRIDAY...

* WHAT...North winds around 20 kt with gusts up to 25 kt expected
  and seas 4 to 6 ft.

* WHERE...Portions of Gulf of America. 

* WHEN...Until 3 AM CST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ330-335-050600-
/O.CON.KHGX.SC.Y.0066.000000T0000Z-251205T0600Z/
Matagorda Bay-Galveston Bay-
730 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...North winds around 20 kt with gusts up to 25 kt expected
  and choppy bay waters.

* WHERE...Matagorda Bay and Galveston Bay.

* WHEN...Until midnight CST tonight.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-04 19:31:05

111 
WHUS74 KHGX 050130
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
730 PM CST Thu Dec 4 2025

GMZ350-355-370-375-050900-
/O.EXT.KHGX.SC.Y.0066.000000T0000Z-251205T0900Z/
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
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-
730 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM CST FRIDAY...

* WHAT...North winds around 20 kt with gusts up to 25 kt expected
  and seas 4 to 6 ft.

* WHERE...Portions of Gulf of America. 

* WHEN...Until 3 AM CST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ330-335-050600-
/O.CON.KHGX.SC.Y.0066.000000T0000Z-251205T0600Z/
Matagorda Bay-Galveston Bay-
730 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...North winds around 20 kt with gusts up to 25 kt expected
  and choppy bay waters.

* WHERE...Matagorda Bay and Galveston Bay.

* WHEN...Until midnight CST tonight.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-04 22:58:41

757 
WHUS74 KHGX 050458
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
1058 PM CST Thu Dec 4 2025

GMZ330-335-050900-
/O.EXT.KHGX.SC.Y.0066.000000T0000Z-251205T0900Z/
Matagorda Bay-Galveston Bay-
1058 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM CST FRIDAY...

* WHAT...North wind of 15 to 20 kt with gusts to 25 kt and choppy
  bay waters.

* WHERE...Matagorda Bay and Galveston Bay.

* WHEN...Until 3 AM CST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ350-355-370-375-050900-
/O.CON.KHGX.SC.Y.0066.000000T0000Z-251205T0900Z/
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
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-
1058 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST FRIDAY...

* WHAT...North winds around 20 kt with gusts up to 25 kt.

* WHERE...Portions of Gulf of America. 

* WHEN...Until 3 AM CST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$


Action: Time Extended
Issued At: 2025-12-04 22:58:41

757 
WHUS74 KHGX 050458
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
1058 PM CST Thu Dec 4 2025

GMZ330-335-050900-
/O.EXT.KHGX.SC.Y.0066.000000T0000Z-251205T0900Z/
Matagorda Bay-Galveston Bay-
1058 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM CST FRIDAY...

* WHAT...North wind of 15 to 20 kt with gusts to 25 kt and choppy
  bay waters.

* WHERE...Matagorda Bay and Galveston Bay.

* WHEN...Until 3 AM CST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ350-355-370-375-050900-
/O.CON.KHGX.SC.Y.0066.000000T0000Z-251205T0900Z/
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
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-
1058 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST FRIDAY...

* WHAT...North winds around 20 kt with gusts up to 25 kt.

* WHERE...Portions of Gulf of America. 

* WHEN...Until 3 AM CST Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$



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