Mississippi Sound GMZ532 Marine Forecast
| Tonight...Southeast Winds 5 To 10 Knots. Waves 1 Foot Or Less. A Slight Chance Of Showers Early This Evening. Patchy Fog Late. |
| Saturday...East Winds Around 5 Knots. Waves 1 Foot Or Less. Patchy Fog In The Morning. A Slight Chance Of Showers In The Morning, Then A Chance Of Showers In The Afternoon. |
| Saturday Night...Southeast Winds Around 5 Knots, Becoming West After Midnight. Waves 1 Foot Or Less. A Slight Chance Of Showers In The Evening, Then A Chance Of Showers After Midnight. |
| Sunday...North Winds 20 To 25 Knots With Gusts Up To 30 Knots. Waves 3 To 5 Feet. A Slight Chance Of Showers In The Morning. |
| Sunday Night...North Winds 25 To 30 Knots, Becoming Northeast 20 To 25 Knots After Midnight. Waves 4 To 5 Feet. |
| Monday...Northeast Winds 15 To 20 Knots With Gusts Up To 25 Knots, Diminishing To 5 To 10 Knots In The Afternoon. Waves 2 To 4 Feet. |
| Monday Night...Northeast Winds 5 To 10 Knots. Waves Around 2 Feet In The Evening, Then 1 Foot Or Less. |
| Tuesday...East Winds 5 To 10 Knots. Waves Around 2 Feet. |
| Tuesday Night...East Winds 5 To 10 Knots. Waves Around 2 Feet In The Evening, Then 1 Foot Or Less. |
| Wednesday...East Winds 5 To 10 Knots. Waves Around 2 Feet. |
| Wednesday Night...Southeast Winds 5 To 10 Knots. Waves Around 2 Feet. A Slight Chance Of Showers After Midnight. |
| Area Forecast Discussion National Weather Service New Orleans LA Issued by National Weather Service Jacksonville FL 1205pm CST Fri Dec 12 2025 .SHORT TERM... (This afternoon through Saturday Night) Issued at 1157am CST Fri Dec 12 2025 The main weather concern through Saturday night will be the potential for widespread morning fog Saturday AM, which may become dense in areas hindering visibilities. Some fog may develop again early Sunday morning along and south of I-10 but it's more likely to be patchy in nature due to a little more wind. Otherwise, weak high pressure at the surface will dominate and continue a weak onshore flow, elevating near-surface moisture across the CWA (County Warning Area) (fueling fog potential tonight and again Sunday AM). There is also the chance for bouts of light rain showers passing from west to east as mild warm advection and a weak impulse aloft moves from eastern Texas across the northern Gulf coast through Saturday, yielding rain chances around 10-20%. By Saturday afternoon, rain chances will trend up slightly but the best chances will be overnight, increasing to around 30-60% for LS parishes north of I-10 as well as the southern MS counties ahead of the an arctic front that will arrive late Saturday night. The most significant concern this period will be the cold arctic air that will follow behind the stronger aforementioned front on Sunday. This airmass will be very dry and cold, potentially the coldest of the Winter so far. Breezy winds will accompany the rush of cold air as it makes its way toward the Gulf shoreline Sunday, leading potentially dangerous wind chills. Low temperatures Sunday night into Monday will be near freezing at the coast with readings in the low to mid 20s common along and north of I-10. Breezy winds will lower the wind chills to the teens and low 20s area wide, likely requiring Cold Weather headlines for Sunday night and Monday. Long Term (Sunday through Thursday) Issued at 1157am CST Fri Dec 12 2025 The most significant concern this period will be the cold arctic air that will follow behind the stronger aforementioned front on Sunday. This airmass will be very dry and cold, potentially the coldest of the Winter so far. Breezy winds will accompany the rush of cold air as it makes its way toward the Gulf shoreline Sunday, leading potentially dangerous wind chills. Low temperatures Sunday night into Monday will be near freezing at the coast with readings in the low to mid 20s common along and north of I-10. Breezy winds will lower the wind chills to the teens and low 20s area wide, likely requiring Cold Weather headlines for Sunday night and Monday. After a bitterly cold day Monday, a transition to a warming onshore flow will begin Tuesday as high pressure becomes established to the east and continues through the rest of the work week resulting in warming temps, higher humidity, and better chances for daily bouts of morning fog. Marine Issued at 1157am CST Fri Dec 12 2025 Moistening onshore flow continues keep seas low through Saturday while a surface ridge resides over the waters. An abrupt change in the maritime conditions is expected Sunday as an arctic front rushes toward the coastal waters. Strong high pressure will strengthen offshore winds to Small Craft Advisory levels with gale-force gusts and seas pushing toward 5 to 8 feet. High pressure will gradually become established to the east around Tuesday next week setting up a period of onshore flow. NOAA New Orleans LA Office: Watches - Warnings - Advisories LA...None. GM...None. MS...None. GM...None. |
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