Lower Atchafalaya River to Intracoastal City, LA from 20 - 60 NM Marine Forecast
| Tonight...West Winds 10 To 15 Knots, Increasing To 15 To 20 Knots With Gusts Up To 25 Knots Late This Evening, Then Becoming Southwest With Gusts Up To 30 Knots After Midnight, Becoming West 10 To 15 Knots With Gusts Up To 20 Knots Late. Seas 2 To 3 Feet. Wave Detail: West 2 Feet At 4 Seconds. A Slight Chance Of Showers And Thunderstorms This Evening. |
| Saturday...West Winds 10 To 15 Knots, Becoming Southwest 20 To 25 Knots With Gusts Up To 35 Knots In The Afternoon. Seas 2 To 3 Feet. Wave Detail: West 2 Feet At 4 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Saturday Night...West Winds Around 10 Knots. Seas 2 To 3 Feet. Wave Detail: West 2 Feet At 4 Seconds. |
| Sunday...Northwest Winds 5 To 10 Knots. Seas Around 2 Feet. Wave Detail: West 2 Feet At 4 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Sunday Night...West Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 4 Seconds. |
| Monday...West Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 3 Seconds. |
| Monday Night...South Winds 5 To 10 Knots. Seas 1 Foot Or Less. |
| Tuesday...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. A Slight Chance Of Showers And Thunderstorms In The Afternoon. |
| Tuesday Night...South Winds 5 To 10 Knots. Seas 1 Foot Or Less. |
| Wednesday...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. |
| Wednesday Night...South Winds 5 To 10 Knots. Seas 1 Foot Or Less, Then Around 2 Feet After Midnight. A Slight Chance Of Showers And Thunderstorms After Midnight. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Lake Charles LA 631pm CDT Fri August 21 2026 (This evening through next Thursday) Issued at 1228pm CDT Fri August 21 2026 Looking to 500 mb, a shortwave perturbation moved southeast through AR/MS, inducing a pressure gradient from south AR into north LA. The gradient then opens to the south, inducing a region of broad lift from northeast LA to central MS. Thus, a cluster of showers and storms have developed. Weak showers have spread west towards the Lakes region, but none of these updrafts have successfully taken root. This is more or less the wall of subsidence put on by upper ridging nosing over from east Texas. A modest increase in coverage, and perhaps intensity, will be possible for areas north of hwy190. According to meso modeling and the 18z sounding, the airmass overhead does carry some characteristics supportive of wet downbursts. There is plenty of CAPE, and lapse rates are favorable for strong updraft growth, which is what we are seeing in the more conducive environment to the east. However, weak capping off the surface and warm mid layer environment both existing beneath upper ridge influence could be enough to limit any real organized severe potential. Where storms can overcome the limitations, strong, damaging downdraft winds and frequent lightning are expected. The threat should diminish with sundown. Hot conditions will then persist through the remainder of the weekend as high pressure moves back overhead. Temperatures and dewpoints should not be so enhanced that extreme heat warnings are necessary, but heat advisories will be needed. A heat advisory has been issued area wide from 11am to 8 PM Saturday. 11/Calhoun Marine Issued at 1228pm CDT Fri August 21 2026 Surface ridging extending over the entire Gulf will keep conditions over the waters mostly clear of rain chances and with low, onshore winds and seas. Fire Weather Issued at 1228pm CDT Fri August 21 2026 An area of showers and isolated thunderstorms has developed across northeast LA and south central MS. An increase in coverage is possible across central LA into the mid to late afternoon and evening as a weak boundary is pushed through the region. Confidence is low for an organized severe risk, but there is at least a 25 percent chance of strong outflow winds and frequent lightning with storms this evening. These hazards could exacerbate fire conditions. Hot and dry conditions then return from Saturday through early next week with daytime RH mins in the 30 to 50 percent range. NOAA Lake Charles LA Office: Watches - Warnings - Advisories LA...Extreme Heat Warning until 8pm CDT this evening for LAZ027>033- 044-045-055-141>143-152>154-241>243. Heat Advisory from 11am to 8pm CDT Saturday for LAZ027>033-044- 045-055-073-074-141>143-152>154-241>243-252>254. Heat Advisory until 8pm CDT this evening for LAZ073-074-252>254. TX...Extreme Heat Warning until 8pm CDT this evening for TXZ180-201- 259>262-515-516-615-616. Heat Advisory from 11am to 8pm CDT Saturday for TXZ180-201- 259>262-515-516-615-616. GM...None. |
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