Southwest Pass of the Mississippi River to Port Fourchon Louisiana Marine Forecast
| Rest Of Tonight...North Winds 10 To 15 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: South 3 Feet At 7 Seconds And North 2 Feet At 3 Seconds. |
| Monday...Northeast Winds 10 To 15 Knots, Diminishing To 5 To 10 Knots In The Afternoon. Seas 2 To 3 Feet. Wave Detail: South 3 Feet At 7 Seconds And Northeast 2 Feet At 3 Seconds. |
| Monday Night...East Winds 5 To 10 Knots. Seas 1 To 2 Feet. Wave Detail: Southwest 2 Feet At 6 Seconds And East 1 Foot At 2 Seconds. |
| Tuesday...Southeast Winds 5 To 10 Knots. Seas 1 To 2 Feet. Wave Detail: Southeast 1 Foot At 3 Seconds And Southeast 1 Foot At 6 Seconds. |
| Tuesday Night...South Winds 5 To 10 Knots. Seas 1 To 2 Feet. Wave Detail: Southeast 2 Feet At 5 Seconds. A Slight Chance Of Showers. |
| Wednesday...South Winds 5 To 10 Knots. Seas 1 To 2 Feet. Wave Detail: South 2 Feet At 4 Seconds. A Slight Chance Of Showers. |
| Wednesday Night...South Winds 5 To 10 Knots, Increasing To 10 To 15 Knots After Midnight. Seas 1 To 2 Feet, Building To 2 To 3 Feet After Midnight. Wave Detail: South 2 Feet At 5 Seconds. A Slight Chance Of Showers In The Evening. |
| Thursday...South Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: South 3 Feet At 4 Seconds. A Slight Chance Of Showers In The Afternoon. |
| Thursday Night...South Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: South 3 Feet At 6 Seconds. A Slight Chance Of Showers In The Evening, Then A Chance Of Showers After Midnight. |
| Friday...South Winds Around 10 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: South 3 Feet At 6 Seconds. A Chance Of Showers. |
| Friday Night...South Winds Around 10 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. A Slight Chance Of Showers In The Evening, Then A Chance Of Showers After Midnight. |
| Area Forecast Discussion National Weather Service New Orleans LA 1151pm CST Sunday Feb 15 2026 .SHORT TERM... (Tonight through Tuesday night) Issued at 1151pm CST Sunday Feb 15 2026 The upper level flow pattern has evolved into a more northwestern flow aloft. Despite this typically leading to a dry and cooler airmass...yes, some slightly lower temps (slightly drier) when compared to the last few days, the pattern still suggests 70s for high temps (away from cooler waters). Otherwise, this morning a deck of low stratus will be in place and will be slow to mix out, which could affect temps just a bit. As soon as surface heating takes over we shouldn't have much of an issue with climbing temps this afternoon (as long as we mix out). Surface high pressure will begin to move into the region this afternoon, which will calm surface winds through the short term period. Eventually, an upper level ridge will spread eastward from south Texas and into the Gulf through the end of the period. The height rises will also aid in additional warming temperatures going into Mardi Gras and as you will soon read, in the long term section, beyond. (Frye) Long Term (Wednesday through Sunday night) Issued at 1151pm CST Sunday Feb 15 2026 Early in the long term period, the main focus will be continued increase in daily temperatures with some locations west of the lakes warming well into the 80s through the end of the week. Surface high pressure will continue east of the region, which will allow for a warm/rich low level return flow to take shape across the region. This and the higher heigheights will allow for temperatures to increase, again leading to some locations hitting 80F+ as we progress through the long term. Going into late this week, a modest frontal boundary will move southward with a weak upper trough. Initially, the front looks to hang up and stall just north of our region, which may support some isolated light shower activity as well as moisture pooling may support fog as well. Eventually, an H5 trough will push the frontal boundary through the region later on next weekend. Globals are in a bit of a disagreement with timing, but both only have a modest Quantitative Precipitation Forecast signal with the frontal passage with very little to work with aloft for our region...most of the ascent looks to stay well north of our region. Needless to say we have time to watch the evolution here since this is Day 6/7. (Frye) Marine Issued at 1151pm CST Sunday Feb 15 2026 Winds will begin to decrease through the morning. Cautionary headlines will continue through sunrise, but overall through the day, marine conditions will gradually become more favorable as high pressure moves into the region. By mid-week, the high will shift to the east and a persistent onshore flow of 10 to 15 knots will develop. These conditions will last through the end of the week. (Frye) NOAA New Orleans LA Office: Watches - Warnings - Advisories LA...None. GM...Small Craft Advisory until midnight CST tonight for GMZ530-532- 534-536-538-550-552-555-557-570-572-575-577. MS...None. GM...Small Craft Advisory until midnight CST tonight for GMZ532-534- 536-538-550-552-555-557-570-572-575-577. |
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