Stake Island, LA to Southwest Pass of the Mississippi River out 20 - 60 NM Marine Forecast
| Rest Of Today...Southeast Winds 5 To 10 Knots. Seas Around 2 Feet. |
| Tonight...South Winds 5 To 10 Knots. Seas Around 2 Feet. |
| Saturday...Southeast Winds Around 5 Knots. Seas Around 2 Feet. |
| Saturday Night...Southeast Winds 5 To 10 Knots. Seas Around 2 Feet. |
| Sunday...South Winds 5 To 10 Knots, Becoming North 10 To 15 Knots With Gusts Up To 20 Knots In The Afternoon. Seas Around 2 Feet, Building To 3 To 4 Feet, Occasionally To 5 Feet In The Afternoon. A Chance Of Showers In The Morning, Then Showers Likely With A Slight Chance Of Thunderstorms In The Afternoon. |
| Sunday Night...North Winds 15 To 20 Knots With Gusts Up To 25 Knots. Seas 5 To 6 Feet, Occasionally To 8 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms In The Evening, Then A Slight Chance Of Showers After Midnight. |
| Monday...Northeast Winds 15 To 20 Knots, Diminishing To 10 To 15 Knots In The Afternoon. Seas 4 To 6 Feet, Occasionally To 8 Feet, Subsiding To 2 To 4 Feet, Occasionally To 5 Feet In The Afternoon. |
| Monday Night...Northeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. |
| Tuesday...East Winds Around 10 Knots. Seas Around 2 Feet. |
| Tuesday Night...Southeast Winds Around 10 Knots. Seas Around 2 Feet. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service New Orleans LA 636am CDT Fri April 19 2024 Long Term (Monday through Thursday) Issued at 300am CDT Fri April 19 2024 Deep layer northwest flow aloft on Monday will continue to usher in a dry, stable, and cooler than average airmass into the region. Skies will remain clear and temperatures will be below average in the lower 70s. Lows Monday night will cool back into the upper 40s and lower 50s as the combination of light winds and clear skies supports strong radiational cooling. Tuesday will see a weak and moisture starved shortwave trough move through the region on the back of developing zonal flow. Other than some scattered cirrus, there will be no evidence of this system moving through the area. Temperatures will gradually modify as the surface high shifts to the east and 925mb temperatures climb. Highs will warm into the mid to upper 70s on Tuesday and lows will be a good 10 degrees warmer Tuesday night with readings in the upper 50s and lower 60s. Conditions currently look favorable for another round of radiation fog development late Tuesday night into early Wednesday morning. Although a strengthening ridge axis over Texas will be the primary influence on the forecast on Wednesday, a shortwave trough riding over the ridge could push a frontal boundary close enough to the northern CWA (County Warning Area) to spark off some isolated showers and thunderstorms during the afternoon hours. Any convective activity will be highly conditioned on the ability to break a fairly strong mid-level capping inversion, and have only went with 20 percent PoP due to this. Highs will continue to warm as onshore flow strengthens and expect to see temperatures climb into the upper 70s and lower 80s. Lows Wednesday night will be little changed with readings falling back into the upper 50s and lower 60s and another round of patchy radiation fog will be possible. By Thursday, deep layer subsidence will take hold as the ridge axis over Texas shifts to the east and moves directly over the forecast area. A strong capping inversion will keep rain chances at bay even as a scattered cumulus field develops in the afternoon hours. This cumulus field will be driven by ample low level instability being fed by temperatures warming into the low to mid 80s. Marine Issued at 300am CDT Fri April 19 2024 Through Saturday night, winds will be largely from the southeast at 5 to 10 knots and seas of 1 to 2 feet can be expected as high pressure to the east dominates. However, a cold front will start to move through the waters on Sunday, and this will shift winds to the northwest at 10 to 15 knots by Sunday evening. Winds will further intensify to between 15 and 20 knots Sunday night into Monday as colder air advects over the warmer coastal waters. This will briefly raise seas to 3 to 5 feet by Monday morning. A high pressure system will pass directly over the waters Monday night into Tuesday and winds will shift to the northeast and then southeast over this period. Wind speeds will also drop to 10 to 15 knots as the heart of the cold pool(a region of relatively cold air) shifts to the east. Southeast winds will then persist on Wednesday and Tuesday at 10 to 15 knots as high pressure slides into the eastern Gulf. NOAA New Orleans LA Office: Watches - Warnings - Advisories LA...None. GM...None. MS...None. GM...None. |
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