Lower Atchafalaya River to Intracoastal City, LA Marine Forecast
| Tonight...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Southwest 1 Foot At 2 Seconds. A Slight Chance Of Thunderstorms This Evening. A Chance Of Showers. A Chance Of Thunderstorms After Midnight. |
| Monday...West Winds 5 To 10 Knots. Seas 1 Foot Or Less, Then Around 2 Feet In The Afternoon. Wave Detail: Southwest 1 Foot At 3 Seconds, Becoming Northwest 1 Foot At 3 Seconds. A Chance Of Thunderstorms. Showers Likely, Mainly In The Morning. |
| Monday Night...West Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 2 Seconds. A Slight Chance Of Showers And Thunderstorms In The Evening, Then A Chance Of Showers And Thunderstorms After Midnight. |
| Tuesday...West Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: Southwest 1 Foot At 4 Seconds. A Chance Of Thunderstorms. Showers Likely, Mainly In The Morning. |
| Tuesday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 3 Seconds. A Slight Chance Of Showers And Thunderstorms In The Evening, Then A Chance Of Showers And Thunderstorms After Midnight. |
| Wednesday...Southwest Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: Southwest 1 Foot At 3 Seconds. A Chance Of Showers And Thunderstorms In The Morning. |
| Wednesday Night...South Winds Around 5 Knots. Seas 1 Foot Or Less. |
| Thursday...South Winds Around 5 Knots. Seas 1 Foot Or Less. |
| Thursday Night...South Winds 5 To 10 Knots. Seas 1 Foot Or Less. |
| Friday...West Winds Around 5 Knots. Seas 1 Foot Or Less. |
| Friday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Lake Charles LA 113pm CDT Sunday July 12 2026 ...NewARINE,Fire Weather .KEY MESSAGES... - An upper level trough and surface boundary will move into the region as deep tropical like moisture moves up from the Gulf that will result in widespread shower and thunderstorm activity through Tuesday. - The storms that develop will produce high rain rates in a short period of time that bring the potential for excessive rainfall with a Slight Risk (level 2 out of 4) Potential on Monday and a Marginal Risk (level 1 out of 4) on Tuesday. There will be a risk for flooding of low lying and urban poor drainage areas. - Rain chances are expected to decrease late in the week as an upper level high builds in. Typical summertime heat can be expected with afternoon max apparent temperatures between 100 and 107 degrees from Wednesday to Friday with the heat risk at the moderate level (2 out of 4.) (This evening through next Saturday) Issued at 110pm CDT Sunday July 12 2026 Latest upper air analysis shows 50H height falls continue across the region as water vapor shows a mid level trough moving south over the region. GOES-PWAT (Precipitable Water) indicate a moist air mass in place with values above 2 inches and near or above the 90th percentile of climo. Radar shows activity just beginning to develop and this should continue through the remainder of the afternoon. The main concern will be torrential downpours, brief gusty winds, and frequent cloud to ground lightning. The showers and thunderstorms are expected to diminish after sunset. However, with a very moist air mass in place, some nocturnal shower activity is expected to develop after midnight. The weakness in the Sub-tropical upper level ridge is expected to become more pronounced on Monday as the mid level short wave deepens over the region. This feature will bring a weak surface frontal boundary into region stalling near the ArkLaTex across northern Louisiana into central Mississippi. Meanwhile, trajectories will bring tropical like moisture up from southern Gulf and into the forecast area that will linger through Tuesday before decreasing some on Wednesday. The result will be high rain chances each day with activity beginning in the morning, with the best coverage during the afternoon hours, along with a potential for excessive rainfall. Monday looks like the potential for excessive rainfall and the risk for flooding will be at its greatest during this episode and a Slight Risk (level 2 out of 4) or between a 15 and 24 percent chance of seeing excessive rainfall leading to flooding has been outlined for the forecast area. On Monday, precipitable water will be over 2.25 inches with with mean layer relative humidity over 80 percent which will bring about high precipitation efficiency. Also, warm cloud layer is projected at 15k feet or higher that will make for warm rain processes to occur. Therefore, expect shower and thunderstorm activity to have high rain rates of 2 to 3 inches per hour. With flow ahead of the boundary becoming parallel to the 85H-70H theta-e ridge and mean storm motion around 10 knots or less, the high rain rates may stay over a location for a prolonged period increasing excessive rainfall and a flood risk, especially for low lying and urban poor drainage areas. Moisture values will decrease slightly on Tuesday, however PWAT (Precipitable Water) will stay above the 90th percentile with Mean Relative Humidity above 70 percent. An upper level ridge will start to build back in on Wednesday decreasing rain chances through Friday. Heat will then increase, although at this point just typical summertime values are expected with max apparent temperatures between 100 and 107 degrees. The heat risk is forecast to be mainly in the moderate (level 2 out of 4) range, which means affects may occur to those who are sensitive to heat, especially those without cooling and hydration. At the end of the period, an inverted trough feature will move across the Gulf. How strong the ridge stays will be the difference of an increase in shower activity or not. At this time, looks the main moisture will be south of the forecast area on Saturday. 07/ Marine Issued at 110pm CDT Sunday July 12 2026 Light southerly flow and low seas are expected to continue through the week as weak surface high pressure is centered over the northeast Gulf. Scattered showers and thunderstorms are expected each day through Wednesday, with the most widespread activity through Tuesday as a mid-level disturbance moves overhead. Winds and seas will be higher near the thunderstorms. Rain chances gradually decrease after midweek as high pressure builds back in aloft. Fire Weather Issued at 110pm CDT Sunday July 12 2026 Southerly flow will push a very moist Gulf air mass into the region through the middle part of the week. Afternoon minimum relative humidity values are expected to be in the 60 to 70 percent range. Meanwhile, a weakness aloft and a stalled frontal boundary will work with the moisture to provide widespread showers and thunderstorms each day through Tuesday. Rain chances decrease starting Wednesday as ridging begins to build back in aloft. No significant fire weather concerns are expected through the forecast period with the exception of cloud to ground lightning with the storms. NOAA Lake Charles LA Office: Watches - Warnings - Advisories LA...None. TX...None. GM...None. |
Lake Charles LA Radar
Gulf Radar