Marine Weather Net

Calcasieu Lake Marine Forecast


TODAY

W
WINDS
5 - 10
KNOTS

TONIGHT

S
WINDS
5 - 10
KNOTS

FRIDAY

N
WINDS
5 KNOTS

FRIDAY NIGHT

S
WINDS
5 KNOTS

The Marine Weather Forecast In Detail:
GMZ432 Forecast Issued: 308 AM CDT Thu Aug 27 2026

Today...West Winds 5 To 10 Knots, Becoming South This Afternoon. Lake Waters Light Chop. A Chance Of Showers And Thunderstorms This Morning, Then Showers And Thunderstorms Likely This Afternoon.
Tonight...South Winds 5 To 10 Knots, Becoming West After Midnight. Lake Waters Light Chop. A Chance Of Thunderstorms. A Chance Of Showers In The Evening, Then Showers Likely After Midnight.
Friday...North Winds Around 5 Knots, Becoming Southeast In The Afternoon. Lake Waters Smooth. A Chance Of Showers And Thunderstorms.
Friday Night...South Winds Around 5 Knots, Becoming East After Midnight. Lake Waters Smooth. A Chance Of Showers And Thunderstorms In The Evening.
Saturday...Northeast Winds Around 5 Knots, Becoming Southeast In The Afternoon. Lake Waters Smooth. A Slight Chance Of Showers And Thunderstorms In The Afternoon.
Saturday Night...Southeast Winds Around 5 Knots. Lake Waters Smooth.
Sunday...East Winds Around 5 Knots, Becoming Southeast In The Afternoon. Lake Waters Light Chop. A Chance Of Showers And Thunderstorms.
Sunday Night...Southeast Winds 5 To 10 Knots. Lake Waters Light Chop. A Slight Chance Of Showers And Thunderstorms After Midnight.
Monday...Southeast Winds Around 5 Knots, Increasing To 5 To 10 Knots In The Afternoon. Lake Waters Light Chop. A Chance Of Showers And Thunderstorms.
Monday Night...Southeast Winds 5 To 10 Knots, Becoming South After Midnight. Lake Waters Light Chop. A Slight Chance Of Showers And Thunderstorms After Midnight. Winds And Waves Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Lake Charles LA
1235am CDT Thu August 27 2026

(Today through Wednesday) Issued at 1214am CDT Thu August 27 2026

At the surface, a stationary front is draped west to east across the Ark-La-Tex, while aloft strong upper ridging is centered over the Four Corners region and troughing is over the Great Lakes/Midwest region. A NWrly flow aloft between these two features will remain in place overhead through the end of the work week, allowing small perturbations to rotate down into the forecast area and initialize showers and thunderstorms across the northern Gulf Coast. Currently, one of these perturbations has allowed for a weak MCS (Mesoscale Convective System, a complex of thunderstorms which becomes organized on a scale larger than the individual thunderstorms) type system to develop across north LA tonight. Most recent CAMs guidance is beginning to agree on the western half of this system weakening while the eastern edge remains in tact as it dives south/southeast over the next few hours. This would lead to areas mainly along and east of the I-49 corridor being the main area to see any rain or severe weather tonight, with the remainder of the region getting shut out once again. In regards to that, for the remainder of the overnight hours WPC has outlined a Slight Risk for Excessive Rainfall across CENLA to the Atchafalaya Basin region and a Marginal Risk elsewhere, while Storm Prediction Center has outlined a Marginal Risk for severe weather (specifically severe winds) across nearly all of our LA parishes away from the coast and parts of adjacent interior SE TX. Main timing of these storms will be 3/4AM through 7/8AM.

Post 12Z, guidance is somewhat all over the place on timing/placement of further convection later today, as further shortwave/weaknesses aloft rotate down into the forecast area. Regardless of timing, it does look like we will see a good smattering of showers and storms today leading to better cloud cover area-wide and in turn slightly 'cooler' temps. Highs will reach into the low to mid 90s this afternoon, while cloud cover should help to hold afternoon heat indices in check keeping the need for a heat advisory at bay. Like tonight's convection, any showers/storms that develop later today will have the potential to produce torrential rainfall. WPC has outlined a Slight Risk for Excessive Rainfall along a line from AEX to LCH and all areas east, while the remainder of the CWA (County Warning Area) is in the Marginal Risk. Similar thinking for Friday's weather, albeit slightly drier, with the main risk for any heavy rain looking to consolidate near the coast and across Acadiana.

Finally by the weekend, upper ridging over the desert SW begins to shift eastward merging with the west Atlantic subtropical ridge overhead on Sunday through early next week. This will lead to slightly drier, and in turn warmer, conditions over the weekend into early next week however, we won't dry out again all together with at least small to medium POPs lingering each day.

Marine
Issued at 1214am CDT Thu August 27 2026

Winds will remain light and mainly out of the south to southwest through the end of the work week. A few round of showers and storms will be possible through the end of the week as well, with winds and seas higher near any convection. Winds turn more southeasterly over the weekend, while rain chances remain somewhat elevated.

Fire Weather
Issued at 1214am CDT Thu August 27 2026

Rain chances return to the forecast as high pressure aloft starts to weaken. We will also see temperatures return close to normal with highs in the low to mid 90s. MinRH values will range from around 55 to 65 percent through the weekend, with light winds.

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