fzus54 khgx 180511
cwfhgx
expires:202604181815;;561707

coastal waters forecast for texas
national weather service houston/galveston tx
1211 am cdt sat apr 18 2026

upper texas coastal waters from high island to the matagorda ship
channel out 60 nautical miles including galveston and matagorda
bays.

seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the
average highest 10 percent of the waves.


gmz335-181815-
galveston bay-
1211 am cdt sat apr 18 2026

...small craft should exercise caution in effect until 7 am cdt
this morning...
...small craft advisory in effect from this evening through
sunday afternoon...

.rest of tonight...south winds 10 to 15 knots with gusts up to
20 knots. bay waters slightly choppy. 
.saturday...south winds 10 to 15 knots, diminishing to around
10 knots in the afternoon. bay waters slightly choppy,
diminishing to smooth in the afternoon. a slight chance of
showers in the morning, then a chance of showers and
thunderstorms in the afternoon. 
.saturday night...north winds around 20 knots with gusts up to
25 knots, becoming northeast around 30 knots after midnight. bay
waters choppy, increasing to very rough after midnight. showers
with a chance of thunderstorms. 
.sunday...northeast winds 20 to 25 knots with gusts up to
35 knots, diminishing to around 20 knots with gusts up to
25 knots in the afternoon. bay waters rough, diminishing to
choppy in the afternoon. 
.sunday night...northeast winds 15 to 20 knots. bay waters
choppy. 
.monday...east winds 15 to 20 knots, diminishing to around
15 knots in the afternoon. bay waters choppy, diminishing to
slightly choppy in the afternoon. 
.monday night...southeast winds 10 to 15 knots. bay waters
slightly choppy. 
.tuesday...southeast winds 10 to 15 knots. bay waters slightly
choppy. a chance of showers in the morning, then a chance of
showers and thunderstorms in the afternoon. 
.tuesday night...southeast winds 10 to 15 knots. bay waters
slightly choppy. 
.wednesday...southeast winds 10 to 15 knots. bay waters slightly
choppy. a chance of showers. a chance of thunderstorms in the
afternoon. 
.wednesday night...southeast winds 15 to 20 knots. bay waters
choppy. 

winds and waves higher in and near thunderstorms.

$$

fzus54 khgx 180511
cwfhgx
expires:202604181815;;561709

coastal waters forecast for texas
national weather service houston/galveston tx
1211 am cdt sat apr 18 2026

upper texas coastal waters from high island to the matagorda ship
channel out 60 nautical miles including galveston and matagorda
bays.

seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the
average highest 10 percent of the waves.


gmz350-355-181815-
coastal waters from freeport to matagorda ship channel tx out
20 nm-coastal waters from high island to freeport tx out 20 nm-
1211 am cdt sat apr 18 2026

...small craft should exercise caution in effect until 7 am cdt
this morning...
...gale watch in effect from this evening through sunday
afternoon...

.rest of tonight...south winds 15 to 20 knots with gusts up to
25 knots. seas 3 to 4 feet. wave detail: south 4 feet at
6 seconds. 
.saturday...south winds 10 to 15 knots, becoming southeast around
10 knots in the afternoon. seas 2 to 4 feet. wave detail: south
4 feet at 6 seconds. a slight chance of showers. a slight chance
of thunderstorms in the afternoon. 
.saturday night...northeast winds around 20 knots, increasing to
around 30 knots after midnight. seas 2 to 4 feet, building to
4 to 6 feet, occasionally to 8 feet after midnight. wave detail:
south 3 feet at 6 seconds, becoming northeast 4 feet at 4 seconds
and southeast 3 feet at 6 seconds. showers likely with a chance
of thunderstorms in the evening, then a chance of showers after
midnight. 
.sunday...northeast winds around 30 knots, diminishing to 20 to
25 knots in the afternoon. seas 5 to 8 feet, occasionally to
10 feet. wave detail: east 7 feet at 7 seconds and northeast
5 feet at 4 seconds. 
.sunday night...northeast winds 20 to 25 knots, becoming east
around 20 knots after midnight. seas 4 to 6 feet, occasionally to
8 feet. wave detail: east 6 feet at 7 seconds. 
.monday...east winds 15 to 20 knots with gusts up to 25 knots.
seas 4 to 6 feet, occasionally to 8 feet. wave detail: east
6 feet at 7 seconds. a chance of showers. 
.monday night...east winds 15 to 20 knots. seas 3 to 5 feet. a
chance of showers. 
.tuesday...southeast winds 15 to 20 knots. seas 3 to 4 feet. a
chance of thunderstorms. a chance of showers in the morning, then
showers likely in the afternoon. 
.tuesday night...southeast winds 15 to 20 knots. seas 3 to
4 feet. a chance of showers in the evening. 
.wednesday...southeast winds around 15 knots. seas 2 to 4 feet. a
chance of showers. 
.wednesday night...southeast winds 15 to 20 knots. seas 2 to
4 feet. 

winds and seas higher in and near thunderstorms.

$$

fzus54 khgx 180511
cwfhgx
expires:202604181815;;561710

coastal waters forecast for texas
national weather service houston/galveston tx
1211 am cdt sat apr 18 2026

upper texas coastal waters from high island to the matagorda ship
channel out 60 nautical miles including galveston and matagorda
bays.

seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the
average highest 10 percent of the waves.


gmz370-375-181815-
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-
1211 am cdt sat apr 18 2026

...small craft should exercise caution in effect until 7 am cdt
this morning...
...gale watch in effect from this evening through sunday
afternoon...

.rest of tonight...south winds 15 to 20 knots with gusts up to
25 knots. seas 4 to 5 feet. wave detail: south 4 feet at
6 seconds. 
.saturday...south winds 10 to 15 knots with gusts up to 20 knots,
becoming southeast around 10 knots in the afternoon. seas 3 to
5 feet. wave detail: southeast 4 feet at 6 seconds. 
.saturday night...east winds around 20 knots, becoming northeast
around 30 knots after midnight. seas 3 to 4 feet, building to
4 to 6 feet, occasionally to 8 feet after midnight. wave detail:
south 3 feet at 6 seconds, becoming northeast 4 feet at 4 seconds
and southeast 3 feet at 6 seconds. a chance of thunderstorms. a
chance of showers in the evening, then showers likely after
midnight. 
.sunday...northeast winds around 30 knots with gusts up to
40 knots, diminishing to 20 to 25 knots with gusts up to 30 knots
in the afternoon. seas 7 to 10 feet, occasionally to 13 feet.
wave detail: northeast 8 feet at 6 seconds and southeast 2 feet
at 6 seconds. a chance of showers in the morning. 
.sunday night...east winds 20 to 25 knots. seas 6 to 8 feet,
occasionally to 10 feet. wave detail: east 8 feet at 7 seconds. 
.monday...east winds 15 to 20 knots with gusts up to 25 knots.
seas 5 to 7 feet, occasionally to 9 feet. wave detail: east
6 feet at 7 seconds. a chance of showers. 
.monday night...east winds 15 to 20 knots. seas 4 to 6 feet,
occasionally to 8 feet. a chance of showers. 
.tuesday...southeast winds 15 to 20 knots. seas 4 to 5 feet. a
chance of thunderstorms. a chance of showers in the morning, then
showers likely in the afternoon. 
.tuesday night...southeast winds 15 to 20 knots. seas around
4 feet. a chance of showers. 
.wednesday...southeast winds around 15 knots. seas around 4 feet.
a chance of showers. 
.wednesday night...southeast winds 15 to 20 knots. seas around
4 feet. 

winds and seas higher in and near thunderstorms.

$$