Marine Weather Net

Port Fourchon Louisiana to Lower Atchafalaya River Louisiana Marine Forecast


TODAY

NE
WINDS
5 - 10
KNOTS

TONIGHT

E
WINDS
5 - 10
KNOTS

SATURDAY

NE
WINDS
5 - 10
KNOTS

SATURDAY NIGHT

SE
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
GMZ550 Forecast Issued: 337 AM CDT Fri Jun 14 2024

Today...Northeast Winds 5 To 10 Knots, Becoming East This Afternoon. Seas 1 Foot Or Less, Then 1 To 2 Feet This Afternoon. Wave Detail: Northeast 1 Foot At 2 Seconds, Becoming East 1 Foot At 2 Seconds. A Slight Chance Of Showers Late This Morning.
Tonight...East Winds 5 To 10 Knots. Seas 1 To 2 Feet In The Evening, Then 1 Foot Or Less.
Saturday...Northeast Winds 5 To 10 Knots, Becoming East In The Afternoon. Seas 1 Foot Or Less, Then 1 To 2 Feet In The Afternoon. Wave Detail: East 1 Foot At 2 Seconds. A Slight Chance Of Showers In The Afternoon.
Saturday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: Southeast 2 Feet At 2 Seconds And Southeast 2 Feet At 5 Seconds. A Slight Chance Of Showers In The Evening, Then A Chance Of Showers And Thunderstorms After Midnight.
Sunday...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: Southeast 4 Feet At 8 Seconds And Southeast 2 Feet At 5 Seconds. A Chance Of Showers And Thunderstorms In The Morning, Then Showers With Thunderstorms Likely In The Afternoon.
Sunday Night...Southeast Winds 10 To 15 Knots With Gusts Up To 20 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: Southeast 4 Feet At 7 Seconds. Showers Likely With A Chance Of Thunderstorms.
Monday...Southeast Winds 15 To 20 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: Southeast 5 Feet At 8 Seconds. Showers. A Chance Of Thunderstorms In The Morning, Then Thunderstorms Likely In The Afternoon.
Monday Night...Southeast Winds 15 To 20 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: Southeast 5 Feet At 8 Seconds. Showers Likely With A Chance Of Thunderstorms.
Tuesday...East Winds 20 To 25 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: Southeast 5 Feet At 7 Seconds. Showers With A Chance Of Thunderstorms.
Tuesday Night...East Winds 20 To 25 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: Southeast 6 Feet At 8 Seconds. A Chance Of Thunderstorms. Showers. Winds And Seas Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service New Orleans LA
616am CDT Fri Jun 14 2024

Long Term
(Monday through Thursday) Issued at 343am CDT Fri Jun 14 2024

There has been little change in thinking from Monday through Wednesday from previous forecasts. The region will remain on the western periphery of a deep layer ridge and deep tropical moisture will continue to feed into the region. PWATs (Precipitable Waters) will be in the 90th percentile or higher each day with readings of between 2 and 2.25 inches expected. The result will be numerous showers and thunderstorms forming each day as temperatures climb into the mid to upper 80s. This is reflected by the high Probability of Precipitation values of 60 to 80 percent forecast each day. The convective activity will decrease in coverage a bit each night as temperatures cool back into the 70s, but will still be at least scattered in nature. Storm motion will remain decent at 10 to 15 knots on Monday and Tuesday with a further increase to around 20 knots on Wednesday. However, very high rainfall rates of 3 to 4 inches per hour with the strongest convection could lead to some localized flash flooding issues each day next week. The highest threat will be for urban drainage systems that could be easily overwhelmed by these excessive rainfall rates.

Thursday will see a change in the pattern as the deep plume of tropical moisture shifts toward Texas and an inverted trough axis associated with a more easterly flow regime aloft begins to move into the Gulf South. PWATs (Precipitable Waters) will decline back to more average levels for mid-June, and this will result in convective coverage becoming more scattered in nature. The decrease in convection and cloud cover will also allow temperatures to climb back to more normal levels in the lower 90s.

Marine
Issued at 343am CDT Fri Jun 14 2024

Benign conditions will remain in place across all of the waters through tomorrow as high pressure remains centered directly over the region. On Sunday, the high will shift to the east and a developing area of low pressure in the Bay of Campeche will lead to a tighter pressure gradient across the northern Gulf. East and southeast winds will be on the increase through the first half of next week with prevailing small craft advisory conditions expected over the open Gulf waters by Monday afternoon. A decent swell train is expected form as these long fetch winds of 20 to 25 knots extend from the eastern Gulf into the northern Gulf. This swell will combine with the wind waves already in place to produce seas of 7 to 10 feet in the open Gulf waters. Additionally, the prolonged nature of these stronger onshore winds will lead to some minor coastal flooding issues by Tuesday.

NOAA New Orleans LA Office: Watches - Warnings - Advisories
LA...None. GM...None. MS...None. GM...None.