Small Craft Advisory 18, NWS Houston/Galveston, TX

792 
WHUS74 KHGX 170444
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
1044 PM CST Tue Feb 16 2021

GMZ335-350-355-370-375-171245-
/O.CON.KHGX.SC.Y.0018.210217T0600Z-210217T1800Z/
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-
1044 PM CST Tue Feb 16 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST
WEDNESDAY...

* WHAT...East to south winds 15 to 25 kt with gusts up to 35 kt 
  and seas 4 to 8 ft expected. Winds will shift to the 
  northeast, then northwest by Wednesday morning.

* WHERE...Galveston Bay and Portions of Gulf of Mexico.

* WHEN...From midnight tonight to noon CST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

673 
WHUS74 KHGX 170447
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
1047 PM CST Tue Feb 16 2021

GMZ330-171300-
/O.EXA.KHGX.SC.Y.0018.210217T0600Z-210217T1800Z/
Matagorda Bay-
1047 PM CST Tue Feb 16 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST WEDNESDAY...

* WHAT...Choppy expected.

* WHERE...Matagorda Bay.

* WHEN...Until noon CST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GMZ335-350-355-370-375-171300-
/O.CON.KHGX.SC.Y.0018.210217T0600Z-210217T1800Z/
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-
1047 PM CST Tue Feb 16 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST
WEDNESDAY...

* WHAT...East winds 15 to 25 kt with gusts up to 35 kt and seas 
  4 to 7 ft expected.

* WHERE...Portions of Gulf of Mexico. 

* WHEN...Until noon CST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

621 
WHUS74 KHGX 171022
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
422 AM CST Wed Feb 17 2021

GMZ330-335-350-355-370-375-171830-
/O.EXT.KHGX.SC.Y.0018.000000T0000Z-210217T2200Z/
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-
422 AM CST Wed Feb 17 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM CST THIS
AFTERNOON...

* WHAT...Northeast winds 20 to 25 kt with gusts up to 35 kt. Winds
  becoming north later today as a coastal low passes to the east.
  Seas 5 to 9 ft. Bay waters rough. 

* WHERE...Portions of Gulf of Mexico. 

* WHEN...Until 4 PM CST this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

936 
WHUS74 KHGX 171459
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
859 AM CST Wed Feb 17 2021

GMZ330-335-350-355-370-375-172300-
/O.EXT.KHGX.SC.Y.0018.000000T0000Z-210218T1000Z/
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-
859 AM CST Wed Feb 17 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM CST THURSDAY...

* WHAT...Northeast winds 20 to 25 knots with gusts up to 35 knots.
  Winds becoming north later today as a coastal low passes to the
  east. Seas 5 to 9 ft. Bay waters rough.

* WHERE...Portions of Gulf of Mexico.

* WHEN...Until 4 AM CST Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

105 
WHUS74 KHGX 172106
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
306 PM CST Wed Feb 17 2021

GMZ330-335-350-355-370-375-180700-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210218T1000Z/
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-
306 PM CST Wed Feb 17 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST
THURSDAY...

* WHAT...Northeast winds 20 to 25 knots with gusts up to 35 
  knots. Winds becoming north later today as a coastal low 
  passes to the east. Seas 5 to 9 ft. Bay waters rough.

* WHERE...Portions of Gulf of Mexico.

* WHEN...Until 4 AM CST Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

019 
WHUS74 KHGX 180335
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
935 PM CST Wed Feb 17 2021

GMZ330-335-350-355-370-375-181145-
/O.EXT.KHGX.SC.Y.0018.000000T0000Z-210218T2100Z/
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-
935 PM CST Wed Feb 17 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL AT LEAST 3 PM CST 
THURSDAY...

* WHAT...North winds 20 to 25 knots, with gusts to 30 knots on the
  Gulf. Seas 4 to 7 ft, occasionally to 8 feet more than 20 nm 
  offshore. Bay waters rough.

* WHERE...Matagorda Bay, Galveston Bay, and adjoining coastal 
  waters of the Gulf of Mexico.

* WHEN...At least through 3 PM CST Thursday, and possibly longer.

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

* ADDITIONAL DETAILS...Elevated north winds are expected to
  continue, and if strong enough, the small craft advisory may
  need to be extended. An extension appears more likely on the
  Gulf than either Matagorda or Galveston Bay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

233 
WHUS74 KHGX 180927
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
327 AM CST Thu Feb 18 2021

GMZ350-355-370-375-181730-
/O.EXT.KHGX.SC.Y.0018.000000T0000Z-210219T0600Z/
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-
327 AM CST Thu Feb 18 2021

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

* WHAT...North winds 20 to 25 knots, with gusts to 30 knots on 
  the Gulf. Seas 4 to 7 ft, occasionally to 8 feet more than 20 
  nm offshore. Bay waters rough.

* WHERE...Matagorda Bay, Galveston Bay, and adjoining coastal 
  waters of the Gulf of Mexico.

* WHEN...Until midnight CST tonight.

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

* ADDITIONAL DETAILS...Elevated north winds are expected to 
  continue, and if strong enough, the small craft advisory may 
  need to be extended. An extension appears more likely on the 
  Gulf than either Matagorda or Galveston Bay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GMZ330-335-181730-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210218T2100Z/
Matagorda Bay-Galveston Bay-
327 AM CST Thu Feb 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...North winds 20 to 25 knots, with gusts to 30 knots on 
  the Gulf. Seas 4 to 7 ft, occasionally to 8 feet more than 20 
  nm offshore. Bay waters rough.

* WHERE...Matagorda Bay, Galveston Bay, and adjoining coastal 
  waters of the Gulf of Mexico.

* WHEN...At least through 3 PM CST Thursday, and possibly longer.

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

* ADDITIONAL DETAILS...Elevated north winds are expected to 
  continue, and if strong enough, the small craft advisory may 
  need to be extended. An extension appears more likely on the 
  Gulf than either Matagorda or Galveston Bay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

297 
WHUS74 KHGX 181522
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
922 AM CST Thu Feb 18 2021

GMZ330-335-182100-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210218T2100Z/
Matagorda Bay-Galveston Bay-
922 AM CST Thu Feb 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...North winds 20 to 25 knots, with gusts to 30 knots on 
  the Gulf. Seas 4 to 7 ft, occasionally to 8 feet more than 20 
  nm offshore. Bay waters rough.

* WHERE...Matagorda Bay, Galveston Bay, and adjoining coastal 
  waters of the Gulf of Mexico.

* WHEN...At least through 3 PM CST Thursday, and possibly longer.

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

* ADDITIONAL DETAILS...Elevated north winds are expected to 
  continue, and if strong enough, the small craft advisory may 
  need to be extended. An extension appears more likely on the 
  Gulf than either Matagorda or Galveston Bay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GMZ350-355-370-375-182330-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210219T0600Z/
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-
922 AM CST Thu Feb 18 2021

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

* WHAT...North winds 20 to 25 knots, with gusts to 30 knots on 
  the Gulf. Seas 4 to 7 ft, occasionally to 8 feet more than 20 
  nm offshore. Bay waters rough.

* WHERE...Matagorda Bay, Galveston Bay, and adjoining coastal 
  waters of the Gulf of Mexico.

* WHEN...Until midnight CST tonight.

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

* ADDITIONAL DETAILS...Elevated north winds are expected to 
  continue, and if strong enough, the small craft advisory may 
  need to be extended. An extension appears more likely on the 
  Gulf than either Matagorda or Galveston Bay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

639 
WHUS74 KHGX 182020
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
220 PM CST Thu Feb 18 2021

GMZ330-335-182130-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210218T2100Z/
Matagorda Bay-Galveston Bay-
220 PM CST Thu Feb 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...North winds around 20 up to 30 knots. Bay waters rough.

* WHERE...Matagorda Bay, Galveston Bay, and adjoining coastal 
  waters of the Gulf of Mexico.

* WHEN...At least through 3 PM CST Thursday, and possibly longer.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GMZ350-355-370-375-190430-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210219T0600Z/
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-
220 PM CST Thu Feb 18 2021

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

* WHAT...North winds around 20 knots, with gusts to 30 knots. 
  Seas 4 to 7 ft, occasionally to 8 feet more than 20 nm offshore.

* WHERE...Gulf waters between High Island to Matagorda Ship
  Channel out 60 nm.

* 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.

&&

$$

988 
WHUS74 KHGX 182027
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
227 PM CST Thu Feb 18 2021

GMZ330-335-190000-
/O.EXT.KHGX.SC.Y.0018.000000T0000Z-210219T0000Z/
Matagorda Bay-Galveston Bay-
227 PM CST Thu Feb 18 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...North winds around 20 up to 30 knots. Bay waters rough.

* WHERE...Matagorda Bay, Galveston Bay, and adjoining coastal 
  waters of the Gulf of Mexico.

* WHEN...Until 6 PM CST this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GMZ350-355-370-375-190430-
/O.EXT.KHGX.SC.Y.0018.000000T0000Z-210219T1200Z/
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-
227 PM CST Thu Feb 18 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM CST FRIDAY...

* WHAT...North winds around 20 knots, with gusts to 30 knots. 
  Seas 4 to 7 ft, occasionally to 8 feet more than 20 nm 
  offshore.

* WHERE...Gulf waters between High Island to Matagorda Ship 
  Channel out 60 nm.

* WHEN...Until 6 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.

&&

$$

872 
WHUS74 KHGX 182352
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
552 PM CST Thu Feb 18 2021

GMZ330-335-190800-
/O.EXT.KHGX.SC.Y.0018.000000T0000Z-210219T0900Z/
Matagorda Bay-Galveston Bay-
552 PM CST Thu Feb 18 2021

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

* WHAT...North winds 20 to 25 knots. Bay waters rough.

* WHERE...Matagorda Bay and Galveston Bay.

* WHEN...Until 3 AM CST Friday.

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

* ADDITIONAL DETAILS...North winds have been slow to diminish on
  both Galveston and Matagorda bays this afternoon and early this
  evening. There are continued reports of sustained winds of 20 
  to 25 knots, and gusts to 30 knots. For this reason, the small 
  craft advisory on the bays is being extended to late tonight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GMZ350-355-370-375-190800-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210219T1200Z/
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-
552 PM CST Thu Feb 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY...

* WHAT...North winds around 20 knots, with gusts to 30 knots. 
  Seas 4 to 7 ft, occasionally to 8 feet more than 20 nm 
  offshore.

* WHERE...Gulf waters between High Island to Matagorda Ship 
  Channel out 60 nm.

* WHEN...Until 6 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.

&&

$$

481 
WHUS74 KHGX 190303
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
903 PM CST Thu Feb 18 2021

GMZ330-335-190900-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210219T0900Z/
Matagorda Bay-Galveston Bay-
903 PM CST Thu Feb 18 2021

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

* WHAT...North winds 20 to 25 knots. Bay waters rough.

* WHERE...Matagorda Bay and Galveston Bay.

* WHEN...Until 3 AM CST Friday.

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

* ADDITIONAL DETAILS...North winds have been slow to diminish on
  both Galveston and Matagorda bays. Though wind speeds are very
  slowly coming down, there are continued reports of sustained
  winds of 20 to 25 knots and gusts to 30 knots. This slow
  diminishing of winds will continue tonight, slipping below the
  threshold for a small craft advisory in the late night hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GMZ350-355-370-375-191115-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210219T1200Z/
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-
903 PM CST Thu Feb 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY...

* WHAT...North winds 20 to 25 knots, with gusts to 30 knots. Seas
  4 to 7 ft, occasionally to 8 feet more than 20 nm offshore.

* WHERE...Gulf waters between High Island to Matagorda Ship 
  Channel out 60 nm.

* WHEN...Until 6 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.

&&

$$

798 
WHUS74 KHGX 190648
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
1248 AM CST Fri Feb 19 2021

GMZ335-191500-
/O.NEW.KHGX.LO.Y.0008.210219T0648Z-210219T1800Z/
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210219T0900Z/
Galveston Bay-
1248 AM CST Fri Feb 19 2021

...LOW WATER ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST EARLY
THIS MORNING...

* WHAT...For the Low Water Advisory, abnormally low water levels.
  For the Small Craft Advisory, north winds 20 to 25 knots and
  rough bay waters.

* WHERE...Galveston Bay.

* WHEN...For the Low Water Advisory, until noon CST today. For 
  the Small Craft Advisory, until 3 AM CST early this morning.

* IMPACTS...Conditions will be hazardous to small craft. Below
  normal water levels will result in hazardous navigating
  conditions.

* ADDITIONAL DETAILS...North winds have been slow to diminish on
  both Galveston and Matagorda bays. Though wind speeds are very
  slowly coming down, there are continued reports of sustained
  winds of 20 to 25 knots and gusts to 30 knots. This slow
  diminishing of winds will continue tonight, slipping below the
  threshold for a small craft advisory in the late night hours.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Mariners should navigate shallow waters with extreme caution due
to below normal water levels.

&&

$$

GMZ330-190900-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210219T0900Z/
Matagorda Bay-
1248 AM CST Fri Feb 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST EARLY
THIS MORNING...

* WHAT...North winds 20 to 25 knots. Bay waters rough.

* WHERE...Matagorda Bay and Galveston Bay.

* WHEN...Until 3 AM CST Friday.

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

* ADDITIONAL DETAILS...North winds have been slow to diminish on
  both Galveston and Matagorda bays. Though wind speeds are very
  slowly coming down, there are continued reports of sustained
  winds of 20 to 25 knots and gusts to 30 knots. This slow
  diminishing of winds will continue tonight, slipping below the
  threshold for a small craft advisory in the late night hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GMZ350-355-370-375-191200-
/O.CON.KHGX.SC.Y.0018.000000T0000Z-210219T1200Z/
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-
1248 AM CST Fri Feb 19 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST EARLY
THIS MORNING...

* WHAT...North winds 20 to 25 knots, with gusts to 30 knots. 
  Seas 4 to 7 ft, occasionally to 8 feet more than 20 nm 
  offshore.

* WHERE...Gulf waters between High Island to Matagorda Ship 
  Channel out 60 nm.

* WHEN...Until 6 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.

&&

$$

379 
WHUS74 KHGX 190924
MWWHGX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Houston/Galveston TX
324 AM CST Fri Feb 19 2021

GMZ335-191800-
/O.EXP.KHGX.SC.Y.0018.000000T0000Z-210219T0900Z/
/O.NEW.KHGX.SC.Y.0019.210219T0924Z-210219T1200Z/
/O.CON.KHGX.LO.Y.0008.000000T0000Z-210219T1800Z/
Galveston Bay-
324 AM CST Fri Feb 19 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...
...LOW WATER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY...

* WHAT...For the Low Water Advisory, abnormally low water levels.
  For the Small Craft Advisory, north winds around 20 knots and slightly
  choppy to choppy bay waters.

* WHERE...Galveston Bay.

* WHEN...For the Low Water Advisory, until noon CST today. For 
  the Small Craft Advisory, until 6 AM CST early this morning.

* IMPACTS...Conditions will be hazardous to small craft. Below 
  normal water levels will result in hazardous navigating 
  conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Mariners should navigate shallow waters with extreme caution due
to below normal water levels.

&&

$$

GMZ330-191200-
/O.EXP.KHGX.SC.Y.0018.000000T0000Z-210219T0900Z/
/O.NEW.KHGX.SC.Y.0019.210219T0924Z-210219T1200Z/
Matagorda Bay-
324 AM CST Fri Feb 19 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS
MORNING...

* WHAT...North winds around 20 knots and choppy bay waters.

* WHERE...Matagorda Bay.

* WHEN...Until 6 AM CST early this morning.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GMZ350-355-370-375-191500-
/O.EXT.KHGX.SC.Y.0018.000000T0000Z-210219T1500Z/
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-
324 AM CST Fri Feb 19 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM CST THIS
MORNING...

* WHAT...North winds 20 to 25 knots, with gusts to 30 knots. 
  Seas 4 to 7 ft, occasionally to 8 feet more than 20 nm 
  offshore.

* WHERE...Gulf waters between High Island to Matagorda Ship 
  Channel out 60 nm.

* WHEN...Until 9 AM CST this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1153 AM CST Tue Feb 16 2021

.AVIATION...
High clouds are beginning to increase from the west while a lower cloud
deck (around 4000 feet) now in the Matagorda Bay area surges northward.
Increasing clouds today with lowering cloud decks later this afternoon
and especially this evening, overnight and on into tomorrow morning.
As the coastal low develops along the lower coast and moves toward
the region, we'll see increasing -RA/-SHRA near the coast (LBX and GLS)
and -FZRA likely inland overnight and on through tomorrow morning (mainly
CXO, UTS and CLL but also quite possible at SGR and IAH) along with
IFR and possible LIFR ceilings and/or visibilities. Expect gusty NE
to NNE winds LBX and GLS overnight through tomorrow morning. The area
will see gradually improving conditions from west to east in the late
morning through afternoon hours tomorrow.  42

&&

PREV DISCUSSION /Issued 444 AM CST Tue Feb 16 2021/...

SHORT TERM [Today Through Thursday]...
Today:
Very cold with temperatures starting out in the single digits to
teens and wind chills near or below zero. Axis of surface high
pressure edges to the east and a coastal trof begins developing.
Look for increasing cloud cover across coastal and w/sw parts of
the region and Gulf moisture begins overspreading the cold airmass
at the surface. Scattered light precipitation will begin
developing offshore later in the day.

This evening into around noon Wednesday:
Coastal trof will become better established and a low pressure
area will develop south of the Matagorda Bay area. Light
precipitation will begin spreading inland...first across southwest
parts of the CWA then northeast across the remainder of the area
overnight as the coastal low treks across the upper Tx coastal
waters and some lead shortwaves from the upper trough to the west
skirt across northern half of the area.

The freeze line around sunset should be situated from roughly the
northern Matagorda Bay area to Houston to Winnie. Although precip
will initially be light, those at or below the freezing mark will
see roads/bridges begin to ice.

Going into the midnight hour and beyond, the freeze line should
VERY VERY slowly edge north, but precip intensity/amounts will
increase. Locations north of the Highway 59 - Interstate 10
corridor become much more troublesome with some significant icing
as the night wears on. Extremely concerned for the northern half
of the CWA especially north of Highway 105 where ice accumulations
should average nearly 1/4". Some guidance - notably HREF members,
indicate the *potential* for significantly more amounts
(0.5-1.0"+). Most favored locations would be northeast parts
(Madison, Walker, Polk, Trinity and Houston Co's). Should these
type amounts actually occur...this would cause devastating impacts
to structures, powerlines and agriculture.

Wednesday afternoon and night:
Surface temps should climb above freezing for most of the area,
though there will remain lingering ice at many locations
especially north of the metro area. Anything that melts could very
well freeze over again Wednesday night. In addition, with any
lingering moisture left - additional disturbances moving across
the region Wed night into Thurs morning will have the potential to
produce some snow/sleet...though negligible accumulations <1/2"
(considering the earlier precip and impacts).  47

LONG TERM [Thursday Night Through Tuesday]...
In the wake of the Wednesday/Thursday's front, a high pressure will
begin to settle in over Texas and the long awaited warming trend
will finally arrive. Clear skies on Friday will allow temperatures
to reach the 40s on Friday. On Saturday, the return of southerly
winds and its corresponding WAA will drive temperatures up even
further to the 60s along the coast and mid-50s everywhere else.

By Sunday, a negatively tilted trough is expected to be over the
Four-Corners region in the Western US, and its associated surface
cold front will be approaching Texas. For our CWA, onshore flow will
strengthen and global models are indicating some rain chances
offshore and along the coast. However, forecast soundings don't look
that promising with plenty of dry air and a capping inversion near
the surface and near 850mb. Therefore, any precip that might try to
form offshore and along the coast will be shallow and stratiform.

By Monday, rain chances will increase as the previously
aforementioned cold front is expected to push through SE TX. The GFS
and Canadian models are handling these next rain chances similarly,
with a  broad swath of rain pushing through our region and leaving
our area by early Tuesday morning. However, the ECMWF is keeping
most precip to our west and offshore as the cold front develops just
west of our CWA. This far out, these models are definitely going to
change, so as of right now, expect another round of rain on Monday,
but timing, location, and duration are uncertain for now. KBL

MARINE...
Low water conditions will continue in the northern parts of the
bays through mid day before recovering as winds take on a more
northeasterly direction. Winds and seas will remain elevated for
the next several days. A coastal low is forecast to begin
developing along the middle Texas coast today and move
northeastward across the upper Texas coast tonight and Wednesday.
Look for showers and possibly a few embedded storms in the waters.
As this system passes, winds will again become northwest as
another push of cold air filters in. Improving marine conditions
can be anticipated Friday into the weekend as southerly winds
resume and warmer air and lowering winds and seas. 47

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      26  22  35  25  33 /   0  90  70  30  20
Houston (IAH)              31  27  40  30  39 /   0  80  90  20  10
Galveston (GLS)            39  38  53  36  43 /   0  90 100  20  10

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...Hard Freeze Warning until noon CST today for the following
     zones: Austin...Brazoria Islands...Brazos...Burleson...
     Chambers...Coastal Brazoria...Coastal Galveston...Coastal
     Harris...Coastal Jackson...Coastal Matagorda...Colorado...
     Fort Bend...Galveston Island and Bolivar Peninsula...
     Grimes...Houston...Inland Brazoria...Inland Galveston...
     Inland Harris...Inland Jackson...Inland Matagorda...
     Madison...Matagorda Islands...Montgomery...Northern
     Liberty...Polk...San Jacinto...Southern Liberty...Trinity...
     Walker...Waller...Washington...Wharton.

     Wind Chill Warning until noon CST today for the following zones:
     Austin...Brazoria Islands...Brazos...Burleson...Chambers...
     Coastal Brazoria...Coastal Galveston...Coastal Harris...
     Coastal Jackson...Coastal Matagorda...Colorado...Fort
     Bend...Galveston Island and Bolivar Peninsula...Grimes...
     Houston...Inland Brazoria...Inland Galveston...Inland
     Harris...Inland Jackson...Inland Matagorda...Madison...
     Matagorda Islands...Montgomery...Northern Liberty...Polk...
     San Jacinto...Southern Liberty...Trinity...Walker...
     Waller...Washington...Wharton.

     Winter Storm Warning from 6 PM this evening to 6 AM CST Thursday
     for the following zones: Austin...Brazos...Burleson...
     Coastal Harris...Coastal Jackson...Colorado...Fort Bend...
     Grimes...Houston...Inland Harris...Inland Jackson...
     Madison...Montgomery...Northern Liberty...Polk...San
     Jacinto...Southern Liberty...Trinity...Walker...Waller...
     Washington...Wharton.

GM...Low Water Advisory until noon CST today for the following zones:
     Galveston Bay...Matagorda Bay.

&&

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1000 AM CST TUE FEB 16 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 AM     SNOW             LIVINGSTON              30.71N 94.93W
02/15/2021  M3.0 INCH        POLK               TX   PUBLIC

0600 AM     SNOW             6 ESE GROVETON          31.03N 95.04W
02/15/2021  M3.0 INCH        TRINITY            TX   BROADCAST MEDIA

&&