Lake Borgne Marine Forecast
| Tonight...South Winds 10 To 15 Knots With Gusts Up To 20 Knots, Diminishing To 5 To 10 Knots After Midnight. Waves Around 2 Feet This Evening, Then 1 Foot Or Less. A Chance Of Showers And Thunderstorms Late. |
| Monday...West Winds 5 To 10 Knots. Waves 1 Foot Or Less. A Chance Of Thunderstorms. Showers Likely, Mainly In The Morning. |
| Monday Night...Southwest Winds Around 5 Knots. Waves 1 Foot Or Less. A Slight Chance Of Showers And Thunderstorms In The Evening. |
| Tuesday...North Winds Around 5 Knots, Becoming West In The Afternoon. Waves 1 Foot Or Less. |
| Tuesday Night...South Winds Around 5 Knots, Becoming West After Midnight. Waves 1 Foot Or Less. |
| Wednesday...Northeast Winds Around 5 Knots. Waves 1 Foot Or Less. |
| Wednesday Night...Southeast Winds Around 5 Knots, Becoming East After Midnight. Waves 1 Foot Or Less, Then Around 2 Feet After Midnight. |
| Thursday...East Winds 10 To 15 Knots. Waves Around 2 Feet. |
| Thursday Night...Southeast Winds Around 10 Knots. Waves Around 2 Feet. |
| Friday...Southeast Winds 10 To 15 Knots. Waves 2 To 3 Feet. |
| Friday Night...Southeast Winds 10 To 15 Knots. Waves 2 To 3 Feet. A Slight Chance Of Showers. Winds And Waves Higher In And Near Thunderstorms. |
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Area Forecast Discussion National Weather Service New Orleans LA 311pm CDT Sunday Mar 23 2025 ...New SHORT TERM, LONG TER Marine .SHORT TERM... (This evening through Monday night) Issued at 300pm CDT Sunday Mar 23 2025 Northern stream trough over Minnesota this afternoon with lead shortwaves over Iowa, the Texas Panhandle, and Baja California. At the surface, high pressure between Bermuda and the Bahamas had a westward extension into the eastern Gulf. A frontal boundary extended from Minnesota to Missouri to Texas. Locally, southerly flow was pumping moisture into the area on 15 to 20 mph southerly winds, and has brought mostly cloudy skies to much of the area this afternoon. Temperatures were mainly in the mid and upper 70s, but a few locations were right at 80 degrees. Dew points were in the lower and middle 60s. Radar indicated a few light rain showers or sprinkles across the extreme western portions of the CWA, but very few people in our CWA (County Warning Area) are seeing them this afternoon. The shortwave over Texas is beginning to produce convection over Arkansas along Interstate 40 at mid afternoon. Deep moisture remains somewhat lacking locally this afternoon, although dew points are climbing into the mid 60s. We will have steep mid level lapse rates in place, of around 8C/km and CAPE values of 1500-2000 J/kg, but low level wind fields aren't particularly strong at this time. Most of the convection allowing models develop a larger area of convection from northeast Mississippi southwestward into Texas during the evening hours, but probably not moving into our area of responsibility over southwest Mississippi until perhaps 3am CDT. Forecast soundings would be supportive of hail as the main threat, as well as damaging winds. However, most model solutions indicate storms will be weakening as they move into the area, with not much remaining of those storms by 9 or 10 AM. That being said, forecast soundings indicate that conditions could destabilize again during the afternoon if we get some sunshine. While the main troughing should be east of the area by midday, if any isolated storms can develop, they will again bring a threat of hail. Clearing skies are expected Monday night across the area, with at least some potential for fog around sunrise Tuesday. Overnight lows the next two nigheights will be mainly in the upper 50s to mid 60s. Highs Monday are likely to be in the mid and upper 70s, but if we get more sunshine than expected Monday afternoon, some lower 80s will be possible. Long Term (Tuesday through Saturday night) Issued at 300pm CDT Sunday Mar 23 2025 Upper flow will primarily be northwesterly for the remainder of the workweek until a southern stream shortwave approaches the area Friday or Friday night. There is likely to be at least one period of showers and thunderstorms next weekend, probably Saturday. The early week trough will only have drier air behind it and not cold air, so temperatures are going to be above normal during the day all week. Much of the area should see high temperatures get into the 80s on multiple days, with potentially mid 80s Tuesday and Wednesday. Normal highs for late March are in the lower and mid 70s. Overnight lows should be in the upper 40s to mid 50s, and we will likely be above those levels most mornings, if not all of them. Marine Issued at 300pm CDT Sunday Mar 23 2025 Beyond the potential for thunderstorms later tonight into Monday, there should be a period of 48 hours or so with fairly benign conditions over the waters, with winds remaining well below 15 knots during that period. Wind and sea conditions will deteriorate somewhat beginning Thursday or Friday ahead of next weekend's weather system. Small Craft Exercise Caution or Small Craft Advisory conditions look likely, perhaps as early as Thursday night. NOAA New Orleans LA Office: Watches - Warnings - Advisories LA...None. GM...None. MS...None. GM...None. |
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