Lower Atchafalaya River to Intracoastal City, LA Marine Forecast
| Today...Northwest Winds 15 To 20 Knots With Gusts Up To 25 Knots. Seas 2 To 4 Feet. Wave Detail: Northwest 3 Feet At 4 Seconds. A Slight Chance Of Showers And Thunderstorms Early This Afternoon. A Chance Of Showers And Thunderstorms Late. |
| Tonight...Tropical Storm Conditions Expected. North Winds 30 To 35 Knots, Becoming West 25 To 30 Knots After Midnight. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: West 4 Feet At 4 Seconds And South 3 Feet At 2 Seconds. A Chance Of Thunderstorms. Showers. |
| Thursday...Tropical Storm Conditions Possible. South Winds 25 To 30 Knots With Gusts Up To 40 Knots, Diminishing To 20 To 25 Knots With Gusts Up To 30 Knots In The Afternoon. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: Southwest 4 Feet At 7 Seconds And Southwest 3 Feet At 4 Seconds. A Chance Of Thunderstorms. Showers Likely, Mainly In The Morning. |
| Thursday Night...South Winds 10 To 15 Knots. Seas 2 To 4 Feet. Wave Detail: Southwest 3 Feet At 4 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Friday...South Winds 5 To 10 Knots. Seas 2 To 3 Feet. Wave Detail: South 1 Foot At 3 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Friday Night...South Winds 5 To 10 Knots. Seas Around 2 Feet. Wave Detail: Southwest 1 Foot At 3 Seconds. |
| Saturday...Southwest Winds Around 5 Knots. Seas Around 2 Feet In The Morning, Then 1 Foot Or Less. |
| Saturday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. |
| Sunday...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. |
| Sunday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less, Then Around 2 Feet After Midnight. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Lake Charles LA 1239am CDT Wednesday July 22 2026 (Today through Tuesday) Issued at 1233am CDT Wednesday July 22 2026 Tropical Storm Bertha is getting battered tonight by northeast shear and dry continental air, two things tropical systems do not like, upper level shear and dry air. Satellite and radar show the center is exposed again with it becoming detached from the convection and the upper level low. Usually these tropical systems like to breathe at night, so the next few hours will be crucial to see what will be left of Bertha. Over the next couple of days the will be a battle between the strengthening upper level ridge from the Rockies building into the central and southwest US and the tropical system Bertha. Steering currents will keep Bertha moving westward near or just inland of the Louisiana coast. Land interaction, although it will be mainly marsh land, and more importantly, the hostile environment from the upper level shear and dry air should keep Bertha on a slow decline and there is still some debate that it may just open up into a wave by the time it reaches southwest Louisiana on Thursday. First thing first, and in the immediate term, heat will be the issue. Looks like a really good day for subsidence and sinking air as the combination apex from the upper level ridge and outflow from Bertha should be maximize. Usually in these situation air temperatures will sky rocket, especially with an expected lack of cloud cover, with air temperatures nearing triple digits. Meanwhile, tropical moisture in the lowest levels will be trying to move in with high surface dew points. Even accounting for some mixing, dew points are likely to be in the mid to upper 70s during max heating. This will bring about oppressive heat and dangerous apparent temperatures between 112 and 117 degrees. Heat Risk from WPC is pinging the forecast area in a Major (3 out of 4) to Extreme (4 out of 4) on the scale. An Extreme Heat Warning will be in effect. A few showers or storms may try to develop late in the afternoon over Acadiana with the daytime heating and enhanced convergence from the circulation of Bertha. As we enter Thursday, the track and strength of Bertha will be the main influence on the weather. Consensus shows that shear and dry air will eventually win the battle with weakening system if it has survived along or south of the southwest Louisiana coast. All indications are that the system will remain asymmetrical with the strong northerly shear pushing any heavy precipitation to the south side of the storm along with the stronger winds. There may be a potential for some stronger showers with high rain rates right along the coast on Thursday. Bertha is expected to dissipate by the weekend with the upper level ridge becoming the main weather player that will bring limited rain chances and hot conditions. 07/ Marine Issued at 1233am CDT Wednesday July 22 2026 Weak high pressure over the western Gulf and the circulation around Tropical Storm Bertha will bring modest west winds today. Winds and seas are expected to increase tonight as Bertha nears the coastal waters. Marine conditions on Thursday will depend on the eventual track and strength of Tropical Storm Bertha as it moves just inland or over the northwest Gulf. At this time tropical storm winds are possible late Wednesday night into Thursday east of Cameron. All marine interests should continue to monitor updates on Tropical Storm Bertha. Fire Weather Issued at 1233am CDT Wednesday July 22 2026 Hot and humid conditions are expected across the region today. Afternoon minimum RH values will be in the 50 to 60 percent range and when combined with air temperatures near 100 the heat index in the afternoon will be around 115 degrees. Tropical Storm Bertha will approach the area late tonight into Thursday. At the moment this system is expected to be asymmetrical with a majority of the higher winds and rain amounts to the south of the track of the center, which is expected to be right along or just off the coast. NOAA Lake Charles LA Office: Watches - Warnings - Advisories LA...Tropical Storm Watch for LAZ074-252>254. Extreme Heat Warning from 10am this morning to 8pm CDT this evening for LAZ027>033-044-045-055-073-074-141>143-152>154- 241>243-252>254. TX...Extreme Heat Warning from 10am this morning to 8pm CDT this evening for TXZ180-201-259>262-515-516-615-616. GM...Tropical Storm Watch for GMZ435-436-452-455-472-475. |
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