Coastal Waters Forecast
Issued by NWS Lake Charles, LA

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FZUS54 KLCH 222051
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
351 PM CDT Tue Aug 22 2017

Coastal waters from the Lower Atchafalaya River LA to High
Island TX out 60 nautical miles including Sabine and
Calcasieu Lakes and Vermilion Bay

Seas are provided as a range of the average height of the
highest one third of the waves...along with the occasional
height of the average highest ten percent of the waves.

GMZ400-231000-
Synopsis for Lower Atchafalaya River LA to High Island TX out
60 NM including Sabine and Calcasieu Lakes and Vermilion Bay
351 PM CDT Tue Aug 22 2017

.SYNOPSIS...
Light southeast winds and low seas will continue through
Wednesday as surface high pressure ridges west across the Gulf
States. Scattered showers and thunderstorms are expected each
afternoon. The high is forecast to breakdown late Wednesday as
the region is squeezed between an approaching cold front to the
north and what is likely to be a regenerated Harvey over the
Southern Gulf of Mexico. Elevated winds and seas are expected to
begin affecting the coastal waters on Friday, and continue through
the weekend. The magnitude of these elevated winds and seas, and
their duration, will depend on the eventual track and strength of
the system. At this time, there is a broad consensus for the
tropical cyclone to come ashore the lower to middle Texas coast
late Friday, then subsequently slow down over South Central Texas
over the weekend before turning eastward early next week. Should
this come to fruition, a prolonged period of rainfall, gusty
onshore flow, and rough seas will result.

$$

GMZ430-231000-
Sabine Lake-
351 PM CDT Tue Aug 22 2017

.TONIGHT...South winds up to 5 knots becoming southwest after
midnight. Lake waters smooth.
.WEDNESDAY...North winds up to 5 knots becoming east around
5 knots in the afternoon. Lake waters smooth. Slight chance of
showers and thunderstorms in the morning, then chance of showers
and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...South winds around 5 knots becoming northeast
after midnight. Lake waters smooth. Slight chance of showers and
thunderstorms.
.THURSDAY...Northeast winds 5 to 10 knots. Lake waters a light
chop. Chance of showers and thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters a light
chop. Chance of showers and thunderstorms.
.FRIDAY...East winds 10 to 15 knots. Lake waters choppy. Showers
and thunderstorms likely.
.FRIDAY NIGHT...East winds 10 to 15 knots. Lake waters choppy.
Showers and thunderstorms likely.
.SATURDAY...Southeast winds 10 to 15 knots. Lake waters choppy.
Showers and thunderstorms likely.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Lake waters
choppy. Showers and thunderstorms likely.
.SUNDAY...Southeast winds 10 to 15 knots. Lake waters choppy.
Showers and thunderstorms likely.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Lake waters
choppy. Showers and thunderstorms likely.

$$

GMZ432-231000-
Calcasieu Lake-
351 PM CDT Tue Aug 22 2017

.TONIGHT...South winds up to 5 knots becoming west after
midnight. Lake waters smooth.
.WEDNESDAY...North winds up to 5 knots becoming east around
5 knots in the afternoon. Lake waters smooth. Slight chance of
showers and thunderstorms in the morning, then chance of showers
and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 5 knots becoming
northeast after midnight. Lake waters smooth. Chance of showers
and thunderstorms in the evening, then slight chance of showers
and thunderstorms after midnight.
.THURSDAY...Northeast winds around 5 knots. Lake waters smooth.
Chance of showers and thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters a light
chop. Chance of showers and thunderstorms.
.FRIDAY...East winds 10 to 15 knots. Lake waters choppy. Showers
and thunderstorms likely.
.FRIDAY NIGHT...East winds 10 to 15 knots. Lake waters choppy.
Showers and thunderstorms likely.
.SATURDAY...Southeast winds 10 to 15 knots. Lake waters choppy.
Showers and thunderstorms likely.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Lake waters
choppy. Showers and thunderstorms likely.
.SUNDAY...Southeast winds 10 to 15 knots. Lake waters choppy.
Showers and thunderstorms likely.
.SUNDAY NIGHT...Southeast winds around 10 knots. Lake waters a
light chop. Showers and thunderstorms likely.

$$

GMZ435-231000-
Vermilion Bay-
351 PM CDT Tue Aug 22 2017

.TONIGHT...South winds up to 5 knots becoming northwest after
midnight. Bay waters smooth. Slight chance of showers and
thunderstorms after midnight.
.WEDNESDAY...North winds up to 5 knots becoming east around
5 knots in the afternoon. Bay waters smooth. Slight chance of
showers and thunderstorms in the morning, then chance of showers
and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...South winds up to 5 knots becoming north after
midnight. Bay waters smooth. Slight chance of showers and
thunderstorms.
.THURSDAY...Northeast winds around 5 knots. Bay waters smooth.
Chance of showers and thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Bay waters a light
chop. Chance of showers and thunderstorms.
.FRIDAY...East winds 5 to 10 knots. Bay waters a light chop.
Showers and thunderstorms likely.
.FRIDAY NIGHT...East winds 5 to 10 knots. Bay waters a light
chop. Showers and thunderstorms likely.
.SATURDAY...Southeast winds 5 to 10 knots. Bay waters a light
chop. Showers and thunderstorms likely.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters a
light chop. Showers and thunderstorms likely.
.SUNDAY...Southeast winds 5 to 10 knots. Bay waters a light chop.
Showers and thunderstorms likely.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
choppy. Showers and thunderstorms likely.

$$

GMZ450-231000-
Coastal waters from Cameron LA to High Island TX out 20 NM-
351 PM CDT Tue Aug 22 2017

.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Slight
chance of showers and thunderstorms after midnight.
.WEDNESDAY...North winds up to 5 knots becoming east around
5 knots in the afternoon. Seas 1 foot or less. Chance of showers
and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 5 knots becoming east
after midnight. Seas 1 foot or less. Slight chance of showers and
thunderstorms in the evening, then chance of showers and
thunderstorms after midnight.
.THURSDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Chance
of showers and thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet.
Chance of showers and thunderstorms in the evening, then showers
and thunderstorms likely after midnight.
.FRIDAY...East winds 20 to 25 knots. Seas 3 to 5 feet. Showers
and thunderstorms likely.
.FRIDAY NIGHT...Southeast winds 20 to 25 knots. Seas 3 to 6 feet
with occasional seas up to 7 feet. Showers and thunderstorms
likely.
.SATURDAY...Southeast winds 20 to 25 knots. Seas 3 to 5 feet.
Showers and thunderstorms likely.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 2 to
4 feet. Showers and thunderstorms likely.
.SUNDAY...South winds 15 to 20 knots. Seas 3 to 5 feet. Showers
and thunderstorms likely.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 5 feet.
Showers and thunderstorms likely.

$$

GMZ452-231000-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
351 PM CDT Tue Aug 22 2017

.TONIGHT...Southeast winds around 5 knots becoming east up to
5 knots after midnight. Seas 1 foot or less. Slight chance of
showers and thunderstorms after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots becoming east in the
afternoon. Seas 1 foot or less. Chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 5 knots becoming
northeast after midnight. Seas 1 foot or less. Slight chance of
showers and thunderstorms in the evening, then chance of showers
and thunderstorms after midnight.
.THURSDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Chance of
showers and thunderstorms.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.
Chance of showers and thunderstorms.
.FRIDAY...East winds 15 to 20 knots. Seas 3 to 5 feet. Showers
and thunderstorms likely.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 5 feet.
Showers and thunderstorms likely.
.SATURDAY...Southeast winds 15 to 20 knots. Seas 3 to 5 feet.
Showers and thunderstorms likely.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 2 to
4 feet. Showers and thunderstorms likely.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Showers and thunderstorms likely.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 5 feet.
Showers and thunderstorms likely.

$$

GMZ455-231000-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
351 PM CDT Tue Aug 22 2017

.TONIGHT...East winds up to 5 knots. Seas 1 foot or less. Slight
chance of showers and thunderstorms after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots becoming east in the
afternoon. Seas 1 foot or less. Slight chance of showers and
thunderstorms in the morning, then chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds up to 5 knots becoming
northeast after midnight. Seas 1 foot or less. Slight chance of
showers and thunderstorms in the evening, then chance of showers
and thunderstorms after midnight.
.THURSDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Chance
of showers and thunderstorms.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.
Slight chance of showers and thunderstorms in the evening, then
chance of showers and thunderstorms after midnight.
.FRIDAY...Southeast winds 15 to 20 knots. Seas 2 to 4 feet.
Showers and thunderstorms likely.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Seas 2 to 4 feet.
Showers and thunderstorms likely.
.SATURDAY...Southeast winds 15 to 20 knots. Seas 2 to 4 feet.
Showers and thunderstorms likely.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 1 to
3 feet. Showers and thunderstorms likely.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 1 to 3 feet.
Showers and thunderstorms likely.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 1 to 3 feet.
Showers and thunderstorms likely.

$$

GMZ470-231000-
Waters from Cameron LA to High Island TX from 20 to 60 NM-
351 PM CDT Tue Aug 22 2017

.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Slight chance of showers and thunderstorms after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet.
Chance of showers and thunderstorms in the morning, then slight
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 3 feet.
Slight chance of showers and thunderstorms in the evening, then
chance of showers and thunderstorms after midnight.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. Chance
of showers and thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 7 feet
with occasional seas up to 8 feet. Chance of showers and
thunderstorms in the evening, then showers and thunderstorms
likely after midnight.
.FRIDAY...East winds 20 to 25 knots. Seas 8 to 12 feet with
occasional seas up to 13 feet. Showers and thunderstorms likely.
.FRIDAY NIGHT...Southeast winds 20 to 25 knots. Seas 8 to 12 feet
with occasional seas up to 13 feet. Showers and thunderstorms
likely.
.SATURDAY...South winds 20 to 25 knots. Seas 6 to 10 feet with
occasional seas up to 11 feet. Showers and thunderstorms likely.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to
7 feet with occasional seas up to 8 feet. Showers and
thunderstorms likely.
.SUNDAY...South winds 15 to 20 knots. Seas 4 to 7 feet with
occasional seas up to 8 feet. Showers and thunderstorms likely.
.SUNDAY NIGHT...South winds 15 to 20 knots. Seas 5 to 8 feet with
occasional seas up to 10 feet. Showers and thunderstorms likely.

$$

GMZ472-231000-
Waters from  Intracoastal City to Cameron LA from 20 to 60 NM-
351 PM CDT Tue Aug 22 2017

.TONIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet. Slight
chance of showers and thunderstorms after midnight.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Chance
of showers and thunderstorms in the morning, then slight chance
of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 3 feet.
Slight chance of showers and thunderstorms in the evening, then
chance of showers and thunderstorms after midnight.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Chance
of showers and thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 7 feet
with occasional seas up to 8 feet. Chance of showers and
thunderstorms in the evening, then showers and thunderstorms
likely after midnight.
.FRIDAY...Southeast winds 20 to 25 knots. Seas 6 to 10 feet with
occasional seas up to 11 feet. Showers and thunderstorms likely.
.FRIDAY NIGHT...Southeast winds 20 to 25 knots. Seas 6 to 10 feet
with occasional seas up to 11 feet. Showers and thunderstorms
likely.
.SATURDAY...Southeast winds 20 to 25 knots. Seas 6 to 10 feet
with occasional seas up to 11 feet. Showers and thunderstorms
likely.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
6 feet with occasional seas up to 7 feet. Showers and
thunderstorms likely.
.SUNDAY...South winds 15 to 20 knots. Seas 4 to 7 feet with
occasional seas up to 7 feet. Showers and thunderstorms likely.
.SUNDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 7 feet with
occasional seas up to 8 feet. Showers and thunderstorms likely.

$$

GMZ475-231000-
Waters from Lower Atchafalaya River to Intracoastal City LA from
20 to 60 NM-
351 PM CDT Tue Aug 22 2017

.TONIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet. Slight
chance of showers and thunderstorms after midnight.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Slight
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet.
Slight chance of showers and thunderstorms in the evening, then
chance of showers and thunderstorms after midnight.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. Chance
of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
6 feet with occasional seas up to 7 feet. Slight chance of
showers and thunderstorms in the evening, then chance of showers
and thunderstorms after midnight.
.FRIDAY...Southeast winds 15 to 20 knots. Seas 5 to 8 feet with
occasional seas up to 10 feet. Showers and thunderstorms likely.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Seas 5 to 8 feet
with occasional seas up to 10 feet. Showers and thunderstorms
likely.
.SATURDAY...Southeast winds 15 to 20 knots. Seas 5 to 8 feet with
occasional seas up to 10 feet. Showers and thunderstorms likely.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
6 feet with occasional seas up to 7 feet. Showers and
thunderstorms likely.
.SUNDAY...South winds 10 to 15 knots. Seas 3 to 6 feet. Showers
and thunderstorms likely.
.SUNDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 6 feet with
occasional seas up to 7 feet. Showers and thunderstorms likely.

$$

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