Mississippi Sound GMZ532 Marine Forecast
| Today...North Winds 10 To 15 Knots. Waves 2 To 3 Feet. |
| Tonight...North Winds 10 To 15 Knots. Waves 2 To 4 Feet. |
| Saturday...Northeast Winds 10 To 15 Knots With Gusts Up To 20 Knots, Diminishing To 5 To 10 Knots In The Afternoon. Waves 2 To 4 Feet. |
| Saturday Night...Northeast Winds 10 To 15 Knots, Increasing To 15 To 20 Knots After Midnight. Waves 2 To 4 Feet. |
| Sunday...East Winds 15 To 20 Knots With Gusts Up To 25 Knots. Waves 3 To 4 Feet. |
| Sunday Night...East Winds 15 To 20 Knots, Becoming Northeast 20 To 25 Knots With Gusts Up To 30 Knots After Midnight. Waves 3 To 5 Feet. A Slight Chance Of Showers After Midnight. |
| Monday...Northeast Winds 25 To 30 Knots. Waves 4 To 5 Feet. A Chance Of Showers. |
| Monday Night...Northeast Winds 25 To 30 Knots, Diminishing To 20 To 25 Knots After Midnight. Waves 4 To 5 Feet. A Chance Of Showers, Mainly In The Evening. |
| Tuesday...Northeast Winds 20 To 25 Knots. Waves 4 To 5 Feet. A Slight Chance Of Showers In The Morning. |
| Tuesday Night...Northeast Winds 20 To 25 Knots. Waves Around 4 Feet. |
| Area Forecast Discussion National Weather Service New Orleans LA 527am CST Fri Nov 13 2026 .SHORT TERM... (Now through Sunday) Issued at 121pm CST Thu Nov 12 2026 The strong Arctic front has pushed through the region earlier this afternoon. Here at ASD, surface dew points have dropped into the middle 40s. With much of the regional temps still well into the 70s, an SPS has been issued for low RH values and elevated winds leading to the potential for enhanced fire weather. The highest chances for fires will reside over the MS Gulf Coast, Southwest Mississippi, and the Florida Parishes of Louisiana. Synoptically, the region resides under a strong dry northwest flow on the western periphery of the strong broad scale upper trough. This should continue to keep things dry through much of the short term period. Similar to today, RH values will be low, but winds will still be below critical thresholds. That said, antecedent conditions are very favorable for ignition of fires especially as vegetation becomes more and more dormant. Outside of the dry conditions, temperatures will also need to be monitored. With strong cold air advection, lower heights/thicknesses, Friday will be cooler with temperatures struggling to reach the uppers 60 or lower 70s. As winds calm slightly Saturday morning, temperatures are forecast to drop into the middle and upper 30s north of the I10/12 corridor. Southshore will cool into the middle 40s for the most part. We will need to watch for the potential of frost and maybe freezing conditions. However, high cloudiness during the overnight hours may help limit radiational cooling just enough to keep the region from seeing freezing conditions. Globals are adamant it will be a bit warmer, but MOS and a few mesoscale guidances are far lower so blended these solutions for now. The best potential would be over the drainage basins, but again there is still a bit more uncertainty depending on cloudiness. On Sunday morning frost may be possible, but temperatures appear to be just a few degrees higher with light winds expected. The best possible shot will be in the extreme northeastern portions of the CWFA. Going into Sunday the upper level pattern breaks down as the broad scale trough exits stage east. With a more progressive flow in place expect temperatures during the afternoon to be slightly warmer. An upper trough dives southward out of the Red River valley, but it appears that this feature will be well west of our region leading to continued dry conditions with no rainfall expected. (Frye) Long Term (Sunday night through Wednesday) Issued at 121pm CST Thu Nov 12 2026 By Sunday night, an upper level H3 trough currently just off the west coast will squeeze the high to its east causing the trough to sharpen over the southern half of the country and northern Mexico as it moves east. This will produce a surface low over TX which will move into the west gulf by Sat night or Sunday. The trough and surface low weaken with time as another strong short wave drops down the west side of the large eastern CONUS trough developing another stronger surface low that moves through the southern states Monday. We don't have any sampling of the upper trough that causes all of this to occur yet. But that is coming either with the 6p run today or 6a run Friday. So confidence is not very high with models in almost total disagreement with spacial and temporal solutions. We will have to see how these two surface lows interact as the first will be moving slower as it weakens which lends to the potential for phasing. The east coast trough does not budge this whole time until after this short wave kicks out Tue. The current model that closest resembles the last sampling of the jet is the EURO, but loosely at best. The global suites will come more in line once this trough is sampled. If the surface low follows the strongest climo thermal gradient, which is near the coast like the EURO advertises during the first part of next week, it could be another beneficial measurement of rainfall for the area. If it is forced far to the south, like the GFS (Global Forecast System) wants to handle it, there won't be as much to speak of. The GFS scenario is a strongly forced scenario where the EURO is somewhat forced but is still holding onto climo guidance. Again, this will all start to make more sense as we move through Friday. Regardless which model we tend to gravitate toward, we will be dry and cool again by Wednesday possibly with cloud cover. (TE) Marine Issued at 121pm CST Thu Nov 12 2026 Moderate northerly winds of 10 to 15 knots will be in place across the waters today in the wake of a passing front. Offshore waters will likely see some winds in the 15 to 20 knot range, so Cautionary Headlines are out through noon on Friday. As high pressure builds into the area behind the cold front through the day Friday, winds will strengthen further leading to potentially hazardous conditions for small craft going into late Friday evening and overnight. Winds will remain near or above Cautionary Headline criteria through the weekend, with Small Craft Advisories likely needed. A coastal low looks affect the waters early next week bringing potential for significant marine impacts to the coastal waters. However, these impacts will greatly depend on the specific track of the low. The current forecast calls for high-end Small Craft Advisory conditions to set in late Sunday night into Monday, with winds in the 20-30kt range accompanied by higher gusts and seas of 6 to 10 ft across the open Gulf waters. Beyond Monday winds and seas will likely continue to remain elevated with a continuation of hazardous conditions through the end of the forecast period. (Frye/TE) NOAA New Orleans LA Office: Watches - Warnings - Advisories LA...None. GM...None. MS...None. GM...None. |
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