Intracoastal City to Cameron, LA Marine Forecast
|Tonight...West Winds Around 5 Knots. Seas 1 Foot Or Less.|
|Friday...North Winds Around 5 Knots Becoming South In The Afternoon. Seas 1 Foot Or Less.|
|Friday Night...South Winds 5 To 10 Knots. Seas 1 Foot Or Less.|
|Saturday...South Winds 5 To 10 Knots. Seas 1 Foot Or Less. Slight Chance Of Showers And Thunderstorms.|
|Saturday Night...South Winds 5 To 10 Knots. Seas 1 To 2 Feet.|
|Sunday...South Winds 5 To 10 Knots. Seas 1 To 2 Feet. Slight Chance Of Showers And Thunderstorms.|
|Sunday Night...South Winds 5 To 10 Knots. Seas 1 To 2 Feet.|
|Monday...South Winds 5 To 10 Knots. Seas 1 To 2 Feet. Slight Chance Of Showers And Thunderstorms.|
|Monday Night...South Winds 5 To 10 Knots. Seas 1 To 2 Feet.|
|Tuesday...South Winds 5 To 10 Knots. Seas 1 To 2 Feet. Slight Chance Of Showers And Thunderstorms.|
|Tuesday Night...South Winds 5 To 10 Knots. Seas 1 To 2 Feet.|
Synopsis for Lower Atchafalaya River LA to High Island TX out 60 NM including Sabine and Calcasieu Lakes and Vermilion Bay: GMZ400|
343 PM CDT Thu Aug 6 2020
Light and variable winds will continue into early Friday. Onshore flow will develop by late Friday and continue through next week as high pressure ridges across the northern Gulf.
Area Forecast Discussion|
National Weather Service Lake Charles LA
413pm CDT Thu August 6 2020
Convection today has been much less than the past few days, although some widely sctd showers and storms have developed acrs lower SE TX and SW LA, mainly south of I-10 where a seabreeze boundary has been attempting to organize. Otherwise, amidst partly to mostly cloudy skies, temperatures are in the upper 80s/around 90.
Latest UA analysis and satellite imagery shows ridging building across the Rio Grande Valley into TX, with a lingering trough/shear axis acrs just east of the lower MS Valley. A weak shortwave sliding south over the area is providing additional support to convection across SW LA and SE TX.
Convection this afternoon should dissipate by early this evening as daytime heating wanes. Ridging aloft will build in from the west tonight, while a wedge of drier air in the mid levels across TN/N MS spreads southwestward into the region. PWATs (Precipitable Waters) will diminish to between 1.3 to 1.6 inches on Friday (near normal for this time of year). While convective coverage should be even less on Friday, CAM guidance suggests some sctd showers and storms will be possible mainly across SE TX. With moisture a little better in this area, along with minimal capping, would not be surprised to see some convection develop again during the afternoon so inserted some low-ish Probability of Precipitation (no more than 30 percent) here.
Meanwhile, whatever is left of the diffuse frontal boundary that has been over the region the past several days will begin to lift north as it gradually dissipates, with onshore flow becoming established as the Bermuda high ridges into the Gulf of Mexico. A return to low end chance Probability of Precipitation is expected on Saturday, with the best chances acrs the lower Atchafalaya Basin and lower Acadiana.
By Sunday, a weakness will develop over the northern Gulf between the ridge across the southern plains and subtropical ridging over the western Atlantic. This weakness will gradually migrate west through the early part of next week as the ridge across TX begins to retrograde. The result will be a return to a more typical summertime pattern of diurnally influenced convection, with a gradual increase in coverage each day.
No significant fluctuation in temperatures is expected through the period. Daytime highs will be mostly in the lower to middle 90s, with overnight lows in the 70s, close to August climatological normals.
Light and somewhat vrbl winds will persist through early Friday, with onshore flow developing Friday afternoon. and continuing through next week. Winds will remain around 10 KT or less, with seas of 1 to 2 feet, so no advisory or caution flags are anticipated. Showers and tstms will remain limited tonight into Friday, with a return to more seasonal sctd convection over the weekend and into early next week.
NOAA Lake Charles LA Office: Watches - Warnings - Advisories
LA...None. TX...None. GM...None.