Lower Atchafalaya River to Intracoastal City, LA from 20 - 60 NM Marine Forecast
| Today...Northeast Winds 5 To 10 Knots, Becoming East This Afternoon. Seas 1 Foot Or Less. Wave Detail: East 1 Foot At 3 Seconds. A Slight Chance Of Showers This Morning. |
| Tonight...North Winds Around 5 Knots, Increasing To 5 To 10 Knots After Midnight. Seas 1 Foot Or Less. Wave Detail: Northwest 1 Foot At 3 Seconds. |
| Thursday...North Winds 10 To 15 Knots. Seas Around 2 Feet. Wave Detail: Northwest 2 Feet At 4 Seconds. |
| Thursday Night...North Winds 15 To 20 Knots. Seas 2 To 4 Feet. Wave Detail: North 3 Feet At 4 Seconds. |
| Friday...Northeast Winds 15 To 20 Knots, Diminishing To 5 To 10 Knots In The Afternoon. Seas 2 To 4 Feet. Wave Detail: North 3 Feet At 5 Seconds. |
| Friday Night...Northeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: North 2 Feet At 4 Seconds. |
| Saturday...East Winds 15 To 20 Knots. Seas 2 To 4 Feet. |
| Saturday Night...East Winds 15 To 20 Knots, Increasing To 20 To 25 Knots After Midnight. Seas 4 To 6 Feet, Occasionally To 8 Feet. A Chance Of Showers After Midnight. |
| Sunday...East Winds 20 To 25 Knots, Increasing To 25 To 30 Knots In The Afternoon. Seas 5 To 7 Feet, Occasionally To 9 Feet, Building To 6 To 9 Feet, Occasionally To 11 Feet In The Afternoon. A Slight Chance Of Showers. |
| Sunday Night...East Winds 25 To 30 Knots. Seas 8 To 11 Feet, Occasionally To 14 Feet. A Slight Chance Of Showers In The Evening, Then A Chance Of Showers After Midnight. |
| Area Forecast Discussion National Weather Service Lake Charles LA 542am CST Wednesday Nov 11 2026 (Tonight through next Tuesday) Issued at 1141pm CST Tuesday Nov 10 2026 An upper level disturbance moving eastward out of Texas and over the forecast area for the remainder of the night into Wednesday morning. Moisture in the atmosphere has increased and deepen more than what was anticipated in the forecast from last night. PWAT (Precipitable Water) values are over the 75th percentile and near 1.4 inches according to the 11/00z upper air sounding from KLCH. Although the sounding showed a dry layer below 10k feet, expect lift with a speed max will help moisten the air mass further. Therefore, widespread shower activity can be expected. Some decent mid level shear and lapse rates with a small amount of elevated CAPE, that there is a non-zero chance of seeing some thunderstorms embedded within the rain shield. Guidance is showing on average between 0.10 and 0.25 inches of rain before it ends on Wednesday morning, with between a 10 and 30 percent chance for a "wetting" rain of over 0.25 inches. The disturbance will move off to the east by noon with shower activity ending. Meanwhile, light mainly onshore winds will allow the air mass to moderate with unseasonably warm temperatures and more humid conditions. Guidance still consistent with northern jet stream short wave energy rotating around an upper level low over Ontario that will dig a large trough over the eastern third of the country. The deep northwest flow developing over the region will help push a Canadian cold front across on late Wednesday night/very early Thursday morning. Despite a brief period of light onshore flow ahead, best and deepest moisture moves off to the east with the upper level disturbance. This will leave behind limited and shall moisture with PWAT (Precipitable Water) near 1 inch and relative humidity around 40 percent. Surface moisture convergence ahead of the front is very weak with upper level dynamics not impressive. Therefore, shower activity is not expected with this frontal passage. Behind the front a strong upper level trough will dominate the eastern section of the continental US with an upper level ridge building up through the Rockies. This will open the door from the Canadian Prairies and the Northern Plains down to the Gulf coast with deep northwest flow. The northwest flow will bring in a very dry air mass for Thursday and Friday with PWAT (Precipitable Water) values around the 25th percentile with mean layer relative humidity values below 30 percent. Progs show 92H-85H mean wind speeds in the 15 to 20 knot range during Thursday afternoon. With clear skies and good solar heating could set up some decent mixing allowing some of these stronger winds to make it down to the surface in gusts. Afternoon minimum relative humidity values forecast to be below 30 percent to go along with overall dry fuels despite rains from the upper level disturbance. Therefore a potential for a fire danger risk can not be ruled out for Thursday and then again on Friday. Over the weekend, the best push of colder air with the Canadian air mass is still trending further to the east. Also, upper level moisture arrives that will limit solar heating during the daytime and radiational cooling at night. So, temperatures not looking quite as cool, however temperatures are still expected to be below seasonal norms and some of the usually colder locations of central Louisiana may see some lows in the upper 30s. Toward the end of the forecast period. Some signs of a more typical El Nino pattern with an active southern jet bringing extensive Pacific moisture to the region with a developing upper level low over the Southern Plains. If this scenario plays out, some decent rain chances for Sunday night into Monday can be expected. 07/ Marine Issued at 1141pm CST Tuesday Nov 10 2026 A weakening surface high over the coastal waters will allow for light and variable winds today with low seas. Occasional rain with a small chance for thunderstorms through the morning hours. A Canadian cold front is expected to move across the coastal waters late Wednesday night and very early Thursday morning. Strong and gusty offshore flow, along with building seas can be expected behind the front into early Friday. Offshore winds will decrease during Friday before winds become more easterly and increase again over the weekend as low pressure develops over Texas. Fire Weather Issued at 1141pm CST Tuesday Nov 10 2026 An upper level disturbance and a brief period of southerly winds will increase moisture values today. Occasional rain is expected through the morning hours. Afternoon minimum relative humidity values are expected to range from 50 to 60 percent. A cold front will move across late tonight and very early Thursday morning. No significant rainfall is expected with this frontal system. Very dry air behind this front along with some brisk northerly winds will bring about the potential for fire danger on Thursday and possibly again on Friday. NOAA Lake Charles LA Office: Watches - Warnings - Advisories LA...None. TX...None. GM...None. |
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