Boothville, LA to Southwest Pass of the Mississippi River Marine Forecast
| This Afternoon...Southwest Winds 10 To 15 Knots With Gusts Up To 20 Knots, Becoming West Late. Seas 2 To 3 Feet. Wave Detail: South 3 Feet At 6 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Tonight...North Winds 15 To 20 Knots, Increasing To 20 To 25 Knots After Midnight. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: Southeast 5 Feet At 6 Seconds And Northwest 4 Feet At 4 Seconds. |
| Sunday...North Winds 20 To 25 Knots With Gusts Up To 30 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: East 6 Feet At 7 Seconds. |
| Sunday Night...Northeast Winds 20 To 25 Knots With Gusts Up To 30 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: Northeast 5 Feet At 6 Seconds. |
| Monday...Northeast Winds 15 To 20 Knots, Diminishing To 10 To 15 Knots In The Afternoon. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: Northeast 4 Feet At 6 Seconds. |
| Monday Night...Northeast Winds Around 10 Knots. Seas 2 To 3 Feet. Wave Detail: Northeast 3 Feet At 5 Seconds. |
| Tuesday...Northeast Winds 5 To 10 Knots, Becoming North In The Afternoon. Seas Around 2 Feet. Wave Detail: East 2 Feet At 5 Seconds. |
| Tuesday Night...Northwest Winds Around 5 Knots, Becoming West After Midnight. Seas 1 Foot Or Less, Then Around 2 Feet After Midnight. Wave Detail: East 1 Foot At 5 Seconds, Becoming West 1 Foot At 2 Seconds And East 1 Foot At 5 Seconds. A Slight Chance Of Showers In The Evening, Then A Chance Of Showers After Midnight. |
| Wednesday...West Winds 10 To 15 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: West 2 Feet At 3 Seconds And East 1 Foot At 5 Seconds. A Chance Of Showers. |
| Wednesday Night...West Winds 15 To 20 Knots, Becoming Northwest 20 To 25 Knots After Midnight. Seas 2 To 4 Feet, Occasionally To 5 Feet, Building To 4 To 6 Feet, Occasionally To 8 Feet After Midnight. Wave Detail: West 3 Feet At 4 Seconds, Becoming Northwest 3 Feet At 4 Seconds. A Slight Chance Of Showers. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service New Orleans LA 1212pm CST Sat Jan 10 2026 .SHORT TERM... (This afternoon through Sunday) Issued at 1202pm CST Sat Jan 10 2026 Today's cold front will continue to move east/southeastward out of the area and into the Gulf this afternoon. A band of post-frontal showers continues to be noted on radar, about 75 miles behind the main line of showers and storms. Once this activity clears the area, expect a dry forecast through the remainder of the short term, with a wind shift to the northwest. Expect a significant cool down behind the front, with overnight lows tonight forecast to be a solid 20-30 degrees cooler than last night. And believe it or not, tonight's lows in the 40s are STILL a few degrees warmer than normal for this time of year. Woof. At least we can turn off our air conditioners for a while! Temperatures during the day Sunday will be cooler than normal, topping out in the mid 50s most places with breezy conditions, so have those jackets on hand. Long Term (Sunday night through Friday) Issued at 1202pm CST Sat Jan 10 2026 Expect the coldest temperatures behind the front to occur late Sunday night/Monday morning and late Monday night/Tuesday morning as the high pressure and colder air mass settle over the area. Efficient radiative cooling will have temperatures falling quickly after sunset, and morning lows are forecasts to bottom out near or just below freezing for areas along/north of the I-10/12 corridor both mornings. For areas that experience freeze conditions, temperatures should only be at or below freezing for a few hours, so the main impact will be to unprotected sensitive vegetation. Residents should also take care to provide outdoor pets with warm shelter and/or blankets, and those using indoor space heaters or fire places should heed all necessary safety precautions. Regarding any cold weather headlines, it doesn't look like we'll meet criteria anywhere. Temperatures across the southernmost areas should remain above freezing, which precludes a freeze warning, and wind chills/ambient temperatures are forecast to remain above cold weather advisory criteria in all locations, though a couple places do get close along the I-10/12 corridor where wind chills will approach 25 degrees Monday morning for a couple hours. Afternoon temperatures will remain chilly on Monday, once again only rising into the mid 50s most places, but should be a bit warmer, closer to 60 degrees, Tuesday afternoon as a brief warming trend sets in ahead of the next frontal system. By midweek, a southern stream disturbance over northern Mexico will begin to open up as it gets absorbed into the longer-wave northern stream trough digging southward from the Great Lakes region toward the Gulf Coast. After a brief warm up on Wednesday, another cold front will drop temperatures back below normal to close out the work week. Regarding precipitation, the highest chances will be Tuesday night into Wednesday morning as the broadening southern stream disturbance moves through the local area. Even then, rain chances appear fairly meager (only in the slight chance to low-end chance range) due to limited moisture return ahead of the disturbance. Marine Issued at 1202pm CST Sat Jan 10 2026 In the wake of today's cold front, high pressure will build across the coastal waters. The combination of a tight pressure gradient and cold air advection will lead to strong winds and rough seas this evening through Sunday night. A small craft advisory will remain in effect for all coastal waters of SE LA and MS during this time. As the high settles over the area Monday, winds and seas will ease until another disturbance approaches the area midweek with another round of caution or advisory conditions likely Wednesday and Thursday as another cold front and following high pressure result in a tightening pressure gradient and cold air advection once again. NOAA New Orleans LA Office: Watches - Warnings - Advisories LA...None. GM...Small Craft Advisory from 6pm this evening to 6am CST Monday for GMZ530-532-534-536-538-550-552-555-557-570-572-575-577. MS...None. GM...Small Craft Advisory from 6pm this evening to 6am CST Monday for GMZ532-534-536-538-550-552-555-557-570-572-575-577. |
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