Southwest Pass of the Mississippi River to Port Fourchon, LA 20 - 60 NM Marine Forecast
| Tonight...West Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Northeast 1 Foot At 3 Seconds And West 1 Foot At 4 Seconds. |
| Sunday...Northwest Winds 5 To 10 Knots. Seas Around 2 Feet In The Morning, Then 1 Foot Or Less. Wave Detail: Northwest 1 Foot At 4 Seconds, Becoming Northeast 1 Foot At 3 Seconds And West 1 Foot At 4 Seconds. |
| Sunday Night...Southwest Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 2 Seconds And Northeast 1 Foot At 3 Seconds. |
| Monday...West Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: East 1 Foot At 2 Seconds And South 1 Foot At 2 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Monday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Southeast 1 Foot At 3 Seconds. |
| Tuesday...West Winds Around 5 Knots, Becoming Northwest Around 5 Knots In The Afternoon. Seas 1 Foot Or Less. Wave Detail: Southeast 1 Foot At 3 Seconds. A Slight Chance Of Showers And Thunderstorms In The Morning, Then A Chance Of Showers And Thunderstorms In The Afternoon. |
| Tuesday Night...South Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Southeast 1 Foot At 3 Seconds. A Slight Chance Of Showers And Thunderstorms After Midnight. |
| Wednesday...West Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: Southwest 1 Foot At 3 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Wednesday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 4 Seconds. A Slight Chance Of Showers And Thunderstorms After Midnight. |
| Thursday...West Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 5 Seconds. A Chance Of Showers And Thunderstorms. |
| Thursday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. A Slight Chance Of Showers And Thunderstorms In The Evening, Then A Chance Of Showers And Thunderstorms After Midnight. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service New Orleans LA 623pm CDT Sat August 22 2026 .SHORT TERM... (Now through Tuesday) Issued at 1122am CDT Sat August 22 2026 Tonight through Monday, upper level ridging will remain in place over the area, and we will enter the "ring of fire" pattern. Southerly surface winds will continue to help advect warm air and moisture into the area, increasing the humidity across the region. Daily isolated to scattered showers and storms will be expected for the next few days. These storms will have the potential for frequent lightning and gusty subsevere winds (40- 50mph). These storms are not expected to be severe, based on recent model trends. The heat continues as ridging builds back over the area. Highs in the upper 90s to low 100s combined with heat index values in the 105-112 degrees range will be quite warm and uncomfortable. Heat advisories are in effect for Sunday and will likely be needed Monday and beyond. Be sure to stay hydrated and take frequent Long Term (Tuesday night through Friday) Issued at 1122am CDT Sat August 22 2026 High pressure continues to build over the area for the rest of the workweek. Southerly surface winds will continue to advect warm and moist air into the region, increasing humidities for the area. Conditions will be quite dry overall thanks to the upper level pattern with Probability of Precipitation around 10-20% for the long term forecast. An isolated shower or storm will be possible daily during peak heating hours. The main risk with these storms where they occur would be frequent lightning and gusty winds (30-50mph). The heat will continue with persistent ridging building over the area. With highs in the mid to upper 90s and heat index values in the 105-110 degree range, it will be quite uncomfortable outside. So, be sure to stay hydrated and take frequent breaks if spending time outdoors. MSW Long Term (Tuesday night through Friday) Issued at 1122am CDT Sat August 22 2026 High pressure continues to build over the area for the rest of the workweek. Southerly surface winds will continue to advect warm and moist air into the region, increasing humidities for the area. Conditions will be quite dry overall thanks to the upper level pattern with Probability of Precipitation around 10-20% for the long term forecast. An isolated shower or storm will be possible daily during peak heating hours. The main risk with these storms where they occur would be frequent lightning and gusty winds (30-50mph). The heat will continue with persistent ridging building over the area. With highs in the mid to upper 90s and heat index values in the 105-110 degree range, it will be quite uncomfortable outside. So, be sure to stay hydrated and take frequent breaks if spending time outdoors. MSW Marine Issued at 1122am CDT Sat August 22 2026 Surface high pressure centered over the central Gulf will maintain a generally weak pressure gradient through much of the period. Northerly winds around 10 knots will become W then SW to start the week. A predominantly light southerly flow will set up by mid week and remain through much of next week. Isolated to scattered thunderstorms will remain possible with winds and waves higher in and near this activity. NOAA New Orleans LA Office: Watches - Warnings - Advisories LA... Heat Advisory until 8pm CDT this evening for LAZ034>037-039- 046>048-056>058-064-070-071-076>087-089>100. Heat Advisory from 11am to 8pm CDT Sunday for LAZ034>037-039- 046>048-056>058-064-070-071-076>087-089>100. GM...None. MS... Heat Advisory until 8pm CDT this evening for MSZ068>071-077- 083>088. Heat Advisory from 11am to 8pm CDT Sunday for MSZ068>071-077- 083>088. GM...None. |
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