Marine Weather Net

Calcasieu Lake Marine Forecast


REST OF TODAY

E
WINDS
5 KNOTS

TONIGHT

S
WINDS
5 KNOTS

MONDAY

S
WINDS
5 KNOTS

MONDAY NIGHT

S
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
GMZ432 Forecast Issued: 927 AM CDT Sun Sep 19 2021

Rest Of Today...East Winds Around 5 Knots Becoming South In The Afternoon. Lake Waters Smooth. Slight Chance Of Showers And Thunderstorms Late In The Morning, Then Chance Of Showers And Thunderstorms In The Afternoon.
Tonight...South Winds Around 5 Knots. Lake Waters Smooth. Chance Of Showers And Thunderstorms In The Evening. Slight Chance Of Showers And Thunderstorms After Midnight.
Monday...South Winds Around 5 Knots. Lake Waters Smooth. Chance Of Showers And Thunderstorms.
Monday Night...South Winds 5 To 10 Knots. Lake Waters A Light Chop.
Tuesday...Southwest Winds Around 5 Knots. Lake Waters Smooth. Slight Chance Of Showers And Thunderstorms In The Morning, Then Chance Of Showers And Thunderstorms In The Afternoon.
Tuesday Night...West Winds Around 5 Knots Becoming North 10 To 15 Knots After Midnight. Lake Waters Smooth Increasing To Choppy After Midnight. Chance Of Showers And Thunderstorms.
Wednesday...North Winds 10 To 15 Knots. Lake Waters Choppy. Chance Of Showers And Thunderstorms In The Morning.
Wednesday Night...Northeast Winds 10 To 15 Knots. Lake Waters Choppy.
Thursday...Northeast Winds 5 To 10 Knots. Lake Waters A Light Chop.
Thursday Night...Northeast Winds 5 To 10 Knots. Lake Waters A Light Chop.
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Synopsis for Lower Atchafalaya River LA to High Island TX out 60 NM including Sabine and Calcasieu Lakes and Vermilion Bay: GMZ400
927 AM CDT Sun Sep 19 2021

Light onshore flow today will continue into Monday with a chance for scattered showers or storms over coastal waters. Heavy rains, gusty winds and lightning are all possible in and around these storms. Winds will strengthen and turn offshore Wednesday with increasing seas as a cold front pushes down into the Gulf of Mexico. Winds and waves will taper down on Thursday as high pressure continues to build into the northwest gulf waters.
Area Forecast Discussion
National Weather Service Lake Charles LA
655am CDT Sunday September 19 2021

/issued 336am CDT Sunday September 19 2021/

Short Term - Today through Tuesday
Upper level pattern has not changed that much across across southeast Texas and Louisiana. The upper weak low continues to just meander across the area which has provided some daytime support of showers and thunderstorms especially during maximum heating. LCH sounding profile has inched up in moisture in the atmospheric column. Last reading of precipitable water was 1.83 which was above the median average of 1.51. All areas should have a decent chance of rain later this morning into this afternoon.

A change in the upper level pattern begins to materialize on Monday as the upper level low or trough across the area begins to shift a bit north and east in response to a deepening trough moving across the northwest United States. This should briefly push moisture further east across our area and therefore lower probability of precipitation can be expected from west to east Monday.

On Tuesday...the upper level trough across the northwest shifts east into the plains which should help to drive a cold front southward into north Texas Tuesday morning. Gulf moisture will open up ahead of the cold front on stronger southerly flow. As the front approaches interior southeast Texas late in the afternoon...showers and thunderstorms will increase in broad fashion there and into the rest of our Louisiana area. The front is expected to sweep quickly across southeast Texas and southwest Louisiana early Tuesday evening and the rest of central and south central Louisiana Tuesday night. Rain will end quickly after frontal passage with cooler and drier air settling in. The threat of severe weather does appear to be low at this time as well as flooding due to the quick nature of the frontal boundary and rapid drying behind it. Crispy cooler weather is coming. See the longterm discussion below.

06

Long Term - Wednesday Through Sunday
No significant changes to the extended period this morning with dry pleasant weather expected throughout. Dry nwrly flow behind the departing trough axis will scour out any lingering moisture, leaving behind generally clear skies and no precipitation into the weekend. Cold Air Advection on high pressure building in from the Pacific NW/warning Canadian coast will usher in significantly cooler air, with highs on Wednesday only forecast to reach the lower 80s... some locations over the northern 1/2 of the area may not get out of the 70s. Wakeup temps Thursday morning look to be in the mid/upper 50s (generally 10 degrees below normal for late September) for most of the area along/north of I-10. Mins Friday morning could be a few degrees cooler. Highs look to remain static through Friday before surface high pressure builds northeast of the forecast area and low-level flow turns more erly, allowing temps to begin gradually moderating.

Marine
Light onshore flow today will continue into Monday with a chance for an isolated shower or storm over coastal waters through Monday. Winds will strengthen and turn offshore Wednesday with increasing seas as a cold front pushes down into the Gulf of Mexico.

NOAA Lake Charles LA Office: Watches - Warnings - Advisories
LA...None. TX...None. GM...None.