Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 300833
CWFHGX

COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
333 AM CDT SUN APR 30 2017

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.

GMZ300-302130-
SYNOPSIS FOR HIGH ISLAND TO THE MATAGORDA SHIP CHANNEL OUT 60
NAUTICAL MILES INCLUDING GALVESTON AND MATAGORDA BAYS
333 AM CDT SUN APR 30 2017

.SYNOPSIS FOR HIGH ISLAND TO MATAGORDA SHIP CHANNEL OUT 60 NM...
MODERATE TO STRONG OFFSHORE WINDS DEVELOPING IN THE WAKE OF A COLD
FRONT WILL PERSIST INTO THIS AFTERNOON. EVEN WITH THE OFFSHORE
FLOW...THE ELEVATED LONG PERIOD SWELLS WILL BE SLOW TO DIMINISH.
ONSHORE WINDS WILL RESUME MONDAY AS HIGH PRESSURE MOVES OFF TO THE
EAST. ANOTHER COLD FRONT IS EXPECTED WEDNESDAY NIGHT.

$$

GMZ330-335-302130-
MATAGORDA BAY-GALVESTON BAY-
333 AM CDT SUN APR 30 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING...

.TODAY...NORTHWEST WINDS 20 TO 25 KNOTS DIMINISHING TO 15 TO 20
KNOTS THIS MORNING...AND THEN TO 10 TO 15 KNOTS IN THE AFTERNOON.
BAY WATERS CHOPPY TO ROUGH BECOMING SLIGHTLY CHOPPY. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING.
.TONIGHT...NORTHWEST WINDS 10 TO 15 KNOTS BECOMING SOUTH 5 TO
10 KNOTS AFTER MIDNIGHT. BAY WATERS SLIGHTLY CHOPPY BECOMING
SMOOTH AFTER MIDNIGHT.
.MONDAY...SOUTH WINDS 5 TO 10 KNOTS INCREASING TO 10 TO 15 KNOTS
IN THE AFTERNOON. BAY WATERS SMOOTH BECOMING 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.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS. BAY WATERS
SLIGHTLY CHOPPY. A CHANCE OF SHOWERS. A CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT.
.WEDNESDAY...SOUTH WINDS 10 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS IN THE AFTERNOON. BAY WATERS SLIGHTLY CHOPPY BECOMING
CHOPPY IN THE AFTERNOON. SHOWERS AND THUNDERSTORMS.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 15 KNOTS BECOMING NORTH
15 TO 20 KNOTS AFTER MIDNIGHT. BAY WATERS SLIGHTLY CHOPPY
BECOMING CHOPPY AFTER MIDNIGHT. SHOWERS AND THUNDERSTORMS LIKELY
IN THE EVENING, THEN A CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT.
.THURSDAY...NORTH WINDS 15 TO 20 KNOTS. BAY WATERS CHOPPY. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 20 KNOTS DECREASING TO
10 TO 15 KNOTS AFTER MIDNIGHT. BAY WATERS CHOPPY BECOMING
SLIGHTLY CHOPPY AFTER MIDNIGHT.

$$

GMZ350-355-302130-
COASTAL WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT
20 NM-COASTAL WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-
333 AM CDT SUN APR 30 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON...

.TODAY...NORTH WINDS 20 TO 25 KNOTS BECOMING NORTHWEST 15 TO 20
KNOTS IN THE AFTERNOON. SEAS 5 TO 7 FEET WITH OCCASIONAL SEAS UP
TO 8 FEET. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING.
.TONIGHT...NORTHWEST WINDS 15 TO 20 KNOTS BECOMING EAST 5 TO
10 KNOTS AFTER MIDNIGHT. SEAS 4 TO 6 FEET WITH OCCASIONAL SEAS UP
TO 7 FEET.
.MONDAY...SOUTHEAST WINDS 5 TO 10 KNOTS BECOMING SOUTH 10 TO
15 KNOTS IN THE AFTERNOON. SEAS 2 TO 4 FEET.
.MONDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 4 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 15 TO 20 KNOTS. SEAS 3 TO
5 FEET. A CHANCE OF SHOWERS AND THUNDERSTORMS.
.WEDNESDAY...SOUTH WINDS 15 TO 20 KNOTS. SEAS 4 TO 5 FEET WITH
OCCASIONAL SEAS UP TO 6 FEET. SHOWERS AND THUNDERSTORMS LIKELY.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING NORTH
15 TO 20 KNOTS AFTER MIDNIGHT. SEAS 3 TO 5 FEET. SHOWERS AND
THUNDERSTORMS LIKELY IN THE EVENING, THEN A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT.
.THURSDAY...NORTH WINDS 15 TO 20 KNOTS. SEAS 4 TO 6 FEET WITH
OCCASIONAL SEAS UP TO 7 FEET. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
.THURSDAY NIGHT...NORTH WINDS 15 TO 20 KNOTS. SEAS 2 TO 4 FEET.

$$

GMZ370-375-302130-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL FROM 20 TO
60 NM-WATERS FROM HIGH ISLAND TO FREEPORT FROM 20 TO 60 NM-
333 AM CDT SUN APR 30 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...NORTH WINDS 20 TO 25 KNOTS BECOMING NORTHWEST 15 TO
20 KNOTS IN THE AFTERNOON. SEAS 6 TO 9 FEET WITH OCCASIONAL SEAS
UP TO 11 FEET. A CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE
MORNING. A SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE MORNING. A
SLIGHT CHANCE OF SHOWERS IN THE LATE MORNING AND EARLY AFTERNOON.
.TONIGHT...NORTHWEST WINDS 15 TO 20 KNOTS BECOMING NORTHEAST 5 TO
10 KNOTS AFTER MIDNIGHT. SEAS 5 TO 7 FEET WITH OCCASIONAL SEAS UP
TO 8 FEET.
.MONDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 3 TO 5 FEET.
.MONDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 4 FEET.
.TUESDAY...SOUTHEAST WINDS AROUND 15 KNOTS. SEAS 3 TO 5 FEET. A
SLIGHT CHANCE OF SHOWERS.
.TUESDAY NIGHT...SOUTHEAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6 FEET
WITH OCCASIONAL SEAS UP TO 7 FEET. A CHANCE OF SHOWERS AND
THUNDERSTORMS.
.WEDNESDAY...SOUTH WINDS 15 TO 20 KNOTS. SEAS 5 TO 6 FEET WITH
OCCASIONAL SEAS UP TO 7 FEET. A CHANCE OF SHOWERS AND
THUNDERSTORMS.
.WEDNESDAY NIGHT...SOUTH WINDS 15 TO 20 KNOTS BECOMING NORTHWEST
AFTER MIDNIGHT. SEAS 4 TO 6 FEET WITH OCCASIONAL SEAS UP TO
7 FEET. A CHANCE OF SHOWERS AND THUNDERSTORMS.
.THURSDAY...NORTH WINDS 15 TO 20 KNOTS INCREASING TO 20 TO
25 KNOTS IN THE AFTERNOON. SEAS 5 TO 7 FEET WITH OCCASIONAL SEAS
UP TO 8 FEET. A CHANCE OF SHOWERS AND THUNDERSTORMS.
.THURSDAY NIGHT...NORTH WINDS 20 TO 25 KNOTS. SEAS 5 TO 7 FEET
WITH OCCASIONAL SEAS UP TO 8 FEET SUBSIDING TO 4 TO 5 FEET WITH
OCCASIONAL SEAS UP TO 6 FEET AFTER MIDNIGHT.

$$



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