Stake Island, LA to Southwest Pass of the Mississippi River out 20 - 60 NM Marine Forecast
| Overnight...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Southwest 1 Foot At 4 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Sunday...West Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 3 Seconds. A Chance Of Showers. A Slight Chance Of Thunderstorms In The Morning, Then A Chance Of Thunderstorms In The Afternoon. |
| Sunday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 4 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Monday...West Winds 5 To 10 Knots, Becoming Northwest In The Afternoon. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 4 Seconds. Showers Likely. A Slight Chance Of Thunderstorms In The Morning, Then A Chance Of Thunderstorms In The Afternoon. |
| Monday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 3 Seconds. A Chance Of Showers. A Chance Of Thunderstorms, Mainly In The Evening. |
| Tuesday...West Winds 5 To 10 Knots, Becoming Northwest In The Afternoon. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 3 Seconds And Northeast 1 Foot At 4 Seconds. A Chance Of Thunderstorms. Showers Likely, Mainly In The Morning. |
| Tuesday Night...Northeast Winds Around 5 Knots, Becoming Southwest After Midnight. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 3 Seconds And Northeast 1 Foot At 3 Seconds. A Chance Of Showers. A Chance Of Thunderstorms, Mainly In The Evening. |
| Wednesday...Northwest Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: West 1 Foot At 3 Seconds. A Slight Chance Of Thunderstorms. A Chance Of Showers, Mainly In The Morning. |
| Wednesday Night...East Winds Around 5 Knots, Becoming Southwest After Midnight. Seas 1 Foot Or Less. Wave Detail: North 1 Foot At 3 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Thursday...North Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Northwest 1 Foot At 2 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Thursday Night...North Winds 5 To 10 Knots. Seas 1 Foot Or Less. A Slight Chance Of Showers After Midnight. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service New Orleans LA 1009pm CDT Sat September 14 2024 ...New Issued at 1007pm CDT Sat September 14 2024 Isolated showers and storms continue to diminish, and are mainly south of Interstate 10 and over the coastal wathers. Winds, temperatures and dew points are currently tracking along forecast trends. No signifiicant need for an update at this time. .SHORT TERM... (This evening through Monday night) Issued at 232pm CDT Sat September 14 2024 A broad upper level low pressure system centered over the Southeastern CONUS will be the main feature of concern driving the forecast through the entire short term period. The forecast area will remain on the southwest periphery of this upper level low as it slowly sinks southward from the Tennessee Valley toward the Gulf Coast over the next two days. Upper level forcing will increase with the approach of the low, and this will support greater diurnally driven convective coverage for Sunday and Monday. The highest rain chances will be on Monday when the low is centered directly over southern Mississippi and southern Alabama resulting in the greatest amount of upper level lift across the region. The forecast calls for Probability of Precipitation values ranging from high end chance over southern and western portions of the CWA (County Warning Area) to likely across coastal Mississippi due to the proximity of the low. Temperatures will be near average through the period with highs in the mid to upper 80s and lows in the upper 60s and lower 70s. There is very little spread in the ensemble data, so have largely stuck with the NBM deterministic output for both Probability of Precipitation and temperatures. Long Term (Tuesday through Friday night) Issued at 232pm CDT Sat September 14 2024 The upper level low will begin to pull back to the north and away from the area on Tuesday, and this will result in less convective coverage as both moisture and upper level forcing begin to decrease. However, enough forcing will be in place to allow for scattered convective development during peak heating hours Tuesday afternoon over much of the forecast area. Highs will be near average with readings climbing into the mid 80s. The rest of the long term period will be dry as the upper level low becomes more centered over the Mid-Atlantic states and a strong upper level ridge forms over Texas and the Plains states. This will keep the area in a northerly flow regime through Friday with dry air and decent subsidence limiting cloud development. The end result will be mostly clear skies, lower humidity, and seasonable temperatures each day. Given the low model spread in the ensemble members, have opted to stick with NBM deterministic output for the extended period in terms of both temperatures and POP. Marine Issued at 232pm CDT Sat September 14 2024 Light gradient flow is expected to remain over the coastal waters through the end of the week as a broad area of surface high pressure dominates the northern Gulf. Winds will remain at 10 knots or less and seas will remain below 2 feet through Friday. Overall, a very quiet period of weather is expected for the coastal waters this week. NOAA New Orleans LA Office: Watches - Warnings - Advisories LA...None. GM...None. MS...None. GM...None. |
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