Marine Weather Net

Southwest Pass of the Mississippi River to Port Fourchon Louisiana Marine Forecast


TONIGHT

SW
WINDS
5 KNOTS

FRIDAY

W
WINDS
5
KNOTS

FRIDAY NIGHT

SW
WINDS
5 - 10
KNOTS

SATURDAY

SW
WINDS
5 KNOTS

The Marine Weather Forecast In Detail:
GMZ552 Forecast Issued: 352 PM CDT Thu Aug 06 2020

Tonight...Southwest Winds Near 5 Knots. Seas 1 Foot Or Less. Dominant Period 4 Seconds.
Friday...West Winds Near 5 Knots Becoming South In The Late Morning And Afternoon. Seas Less Than 1 Foot. Dominant Period 4 Seconds.
Friday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Dominant Period 4 Seconds.
Saturday...Southwest Winds Near 5 Knots Becoming South In The Late Morning And Afternoon. Seas 1 Foot Or Less. Dominant Period 4 Seconds. Slight Chance Of Showers And Thunderstorms Through The Day.
Saturday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Dominant Period 7 Seconds.
Sunday...West Winds Near 5 Knots Becoming North Late In The Morning, Then Becoming South In The Afternoon. Seas 1 Foot Or Less. Dominant Period 5 Seconds. Slight Chance Of Showers And Thunderstorms In The Afternoon.
Sunday Night...Southwest Winds 5 To 10 Knots. Seas 1 Foot Or Less. Dominant Period 5 Seconds.
Monday...Southwest Winds Near 5 Knots Becoming Southeast In The Late Morning And Afternoon. Seas 1 Foot Or Less. Dominant Period 5 Seconds. Slight Chance Of Showers And Thunderstorms.
Monday Night...Southwest Winds 5 To 10 Knots. Seas 1 To 2 Feet. Dominant Period 5 Seconds.
Tuesday...Southwest Winds Near 5 Knots Becoming South In The Late Morning And Afternoon. Seas 1 Foot Or Less. Dominant Period 5 Seconds. Chance Of Showers And Thunderstorms.
Tuesday Night...South Winds 5 To 10 Knots. Seas 1 To 2 Feet. Dominant Period 4 Seconds. Slight Chance Of Showers And Thunderstorms After Midnight.
SHARE THIS PAGE:           
Synopsis for Pascagoula to SW Pass Mississippi - GMZ501
Synopsis for SW Pass Mississippi River to Atchafalaya River- GMZ500
352 PM CDT Thu Aug 6 2020

Weak high pressure will prevail across the northern Gulf through this weekend and into next week.
Area Forecast Discussion
National Weather Service New Orleans LA
411pm CDT Thu August 6 2020

Short Term
Similar convective outcome as yesterday with limited convection on suppressed gulf breeze convergence zone over Terrebonne Parish, moving SE towards to coast. Once again, this will become part of the nocturnal land breeze process for the near coastal waters overnight. Still a weak surface pressure pattern with a third day of marginal stagnation for a little more haziness Friday over much of the area in the morning, then partly cloudy and warm for persistent temperatures Friday and Saturday. Rain chances should remain slightly less than normal through Sunday before trending upward.

Long Term
Surface flow becomes more onshore oriented later Sunday through much of next week to bring rain chances higher each day, mainly on sea breeze regime but somewhat enhanced by a frontolytic boundary that will be lingering and masking the sea breeze. Temperatures should be tamped by increased cloud and rain coverage during the extended period.

Marine
Continuation of light winds and low seas for the much of the period. There will be a brief period of a ground swell train with a period 8 seconds dampening out Saturday, which may provide a duration of 2-3 foot swell, but currently will indicate a significant wave 1-2 feet Saturday as the secondary period from the Yucatan Channel will aid in dampening the Florida Straits longer period swell.

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