Marine Weather Net

Port Fourchon, LA to Lower Atchafalaya River, LA out 20 - 60 NM Marine Forecast


TODAY

SE
WINDS
15 - 20
KNOTS

TONIGHT

W
WINDS
20 - 25
KNOTS

SUNDAY

W
WINDS
15 - 20
KNOTS

SUNDAY NIGHT

W
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
GMZ570 Forecast Issued: 404 AM CST Sat Nov 26 2022

SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL NOON CST TODAY ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON CST TODAY THROUGH SUNDAY AFTERNOON...
Today...Southeast Winds 15 To 20 Knots With Gusts Up To 25 Knots, Becoming South 20 To 25 Knots With Gusts Up To 35 Knots This Afternoon. Seas 3 To 5 Feet, Occasionally To 6 Feet. Scattered Showers With Isolated Thunderstorms Late This Morning. Widespread Showers And Scattered Thunderstorms This Afternoon.
Tonight...West Winds 20 To 25 Knots With Gusts Up To 35 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Widespread Showers And Scattered Thunderstorms In The Evening, Then Isolated Showers After Midnight.
Sunday...West Winds 15 To 20 Knots With Gusts Up To 30 Knots, Diminishing To 10 To 15 Knots In The Afternoon. Seas 5 To 6 Feet, Occasionally To 8 Feet, Subsiding To 3 To 5 Feet, Occasionally To 6 Feet In The Afternoon.
Sunday Night...West Winds 10 To 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet.
Monday...North Winds 5 To 10 Knots, Becoming East In The Afternoon. Seas 2 To 3 Feet.
Monday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet.
Tuesday...South Winds Around 15 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. A Chance Of Showers. A Slight Chance Of Thunderstorms In The Afternoon.
Tuesday Night...South Winds 10 To 15 Knots. Seas 4 To 5 Feet, Occasionally To 6 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms In The Evening, Then Showers Likely With A Chance Of Thunderstorms After Midnight.
Wednesday...Southwest Winds 10 To 15 Knots, Becoming North In The Afternoon. Seas 4 To 5 Feet, Occasionally To 6 Feet. Showers Likely With A Slight Chance Of Thunderstorms In The Morning, Then A Chance Of Showers In The Afternoon.
Wednesday Night...Northeast Winds Around 15 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet In The Evening. A Slight Chance Of Showers In The Evening. Winds And Seas Higher In And Near Thunderstorms.
SHARE THIS PAGE:           
Area Forecast Discussion
National Weather Service New Orleans LA
603am CST Sat Nov 26 2022

Long Term
(Sunday night through Friday) Issued at 533am CST Sat Nov 26 2022

It looks like we will see another system impact the region during the middle of the week but overall not extremely confident in the forecast nor the impacts we could see. With that we stuck very close to the NBM.

As we move into Tuesday generally zonal flow will become more southwesterly as a ridge builds over Cuba and the next s/w system works southeast over the continental divide. There are some rather distinct differences in the strength of the next system. That also leads to differences in timing and potential for severe weather. Right now Storm Prediction Center has portions of the area outlooked at 15% (basically a Slight Risk) in the day 4 which is 12Z Tuesday through 12z Wed. The main timing would be overnight and through the Wednesday for our impacts. A stronger deeper s/w would suggest a better chance of strong to severe storms but also favor a slightly slower speed (later time frame possibly going a little deeper into Wednesday and not mainly an overnight Tuesday night episode). That said either solution looks like the bulk of the forcing will remain north of the region and thus the greatest impacts should as well. Still anticipate showers and thunderstorms at the least but we will wit a little longer and for us to get through todays systems before we really dive into the details on the mid week system. /CAB/

Marine
Issued at 533am CST Sat Nov 26 2022

Right now the coastal zones are only seeing minimal impacts and that is actually from slightly reduced visibilities but conditions should change rather quickly this morning as winds begin to ramp up. SCY conditions are expected to rapidly develop after sunrise across the waters west of the mouth of the river and then expand east through the morning and midday hours. By late this afternoon as the surface low begins to deepen and trek north near the TX/LA border the gradient will tighten and strong scy conditions will impact all of the coastal waters. The cold front is expected to traverse the waters overnight tonight and winds will quickly veer around to the west and southwest overnight but SCY conditions will remain in place through midday Sunday and possibly later. /CAB/

NOAA New Orleans LA Office: Watches - Warnings - Advisories
LA...Wind Advisory from noon today to midnight CST tonight for LAZ034>037-039-046>048-056>060-064>071-076>090.

GM...Small Craft Advisory from noon today to 1pm CST Sunday for GMZ530-532-534-536-538-550-552-555-557-570-572-575-577.

MS...Wind Advisory from noon today to midnight CST tonight for MSZ068>071-077-080>082.

GM...Small Craft Advisory from noon today to 1pm CST Sunday for GMZ532-534-536-538-550-552-555-557-570-572-575-577.