Southwest Pass of the Mississippi River to Port Fourchon, LA 20 - 60 NM Marine Forecast
| Overnight...Southeast Winds Around 10 Knots. Seas Around 2 Feet. |
| Thursday...Southeast Winds 10 To 15 Knots. Seas Around 2 Feet. |
| Thursday Night...Southeast Winds 10 To 15 Knots With Gusts Up To 25 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. |
| Friday...Southeast Winds 15 To 20 Knots With Gusts Up To 25 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. |
| Friday Night...Southeast Winds 15 To 20 Knots With Gusts Up To 30 Knots. Seas 4 To 5 Feet, Occasionally To 6 Feet, Building To 5 To 7 Feet, Occasionally To 9 Feet After Midnight. |
| Saturday...Southeast Winds Around 20 Knots With Gusts Up To 30 Knots. Seas 6 To 8 Feet, Occasionally To 10 Feet. |
| Saturday Night...Southeast Winds 20 To 25 Knots With Gusts Up To 30 Knots. Seas 7 To 8 Feet, Occasionally To 10 Feet. |
| Sunday...Southeast Winds 15 To 20 Knots. Seas 6 To 8 Feet, Occasionally To 10 Feet. |
| Sunday Night...Southeast Winds 15 To 20 Knots. Seas 6 To 7 Feet, Occasionally To 9 Feet. |
| Monday...Southeast Winds Around 15 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. |
| Monday Night...Southeast Winds Around 15 Knots. Seas 5 To 6 Feet, Occasionally To 8 Feet. |
| Area Forecast Discussion National Weather Service New Orleans LA 1156pm CDT Wednesday April 24 2024 .SHORT TERM... (This evening through Thursday night) Issued at 236pm CDT Wednesday April 24 2024 Northwesterly flow remains over our region as we reside between a shortwave ridge to our west and a modestly amplified trough east of us. With heigheights and thicknesses continuing to increase, temperatures have responded today with a few places exceeding the 80 degree mark. A surface front is currently over northern AL/MS and will drop southward with time toward our region. However, with the ridge upstream building in, this almost backdoor cold front will be just shy of making it into our region. Guidance has a very very modest Quantitative Precipitation Forecast signal over our northwest CWFA this evening. Cannot rule out a sprinkle or two in that area. The main impact from the front is potential moisture pooling and fog overnight ahead of the front with the best potential along and north of the I10/12 corridor and west of I55. Went with patchy fog for now, but some patchy dense fog at times cannot be ruled out in the fog favored locations. Going into Thursday the pattern transitions just a bit. H5 flow will evolve to a more active southwesterly flow as an amplifying upper trough moves east and suppresses the upper ridge down into the Gulf of Mexico. Despite being suppressed, our heigheights and thicknesses will continue to gradually rise and again will continue our warming trend through the end of the short term period. (Frye) Long Term (Friday through Tuesday night) Issued at 236pm CDT Wednesday April 24 2024 A large scale trough will reside across the Rockies and western half of the US. A modest ridge will remain in place across the east as the long term period begins, leaving our region in an active southwesterly flow aloft. H5 impulses will ride over the ridge from the southwest to the northern plains and Cornbelt region. This will help push yet another cold front toward our region, but as the upper level support moves downstream and the front becomes parallel to the mean flow, the front will stall across the ArkLaTex region keeping most of the rain with it just to our northwest this weekend. Temperatures look to remain a few degrees above average through much of this time as well. Going into the new workweek, another H5 impulse begins to amplify over the high plains, which will send the front closer to our region. Finally by this point the front may start to get close enough for POPs Monday afternoon with the best potential across the northern and western tier. A strengthening upper ridge by the end of the forecast period will help stall this front again just to our north and the POPs/Quantitative Precipitation Forecast associated with this feature may remain north of the area. (Frye) Marine Issued at 236pm CDT Wednesday April 24 2024 Mostly favorable marine conditions will continue through Thursday. Late Thursday and into the upcoming weekend winds will increase in response to a tightening of the pressure gradient between high pressure east and low pressure across the plains. Light to moderate winds and seas can be expected through the weekend and into early next week. This should lead to some headlines being needed possibly as early as Friday and into the start of the new workweek. (Frye) NOAA New Orleans LA Office: Watches - Warnings - Advisories LA...None. GM...None. MS...None. GM...None. |
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