Mississippi Sound GMZ632 Marine Forecast
| Tonight...West Winds 5 To 10 Knots, Becoming Northwest Late. Waves 1 Foot Or Less. Light Chop. A Chance Of Showers And Thunderstorms, Mainly This Evening. |
| Saturday...Northwest Winds Around 5 Knots, Becoming Southwest In The Afternoon. Waves 1 Foot Or Less. Light Chop. |
| Saturday Night...Southwest Winds 5 To 10 Knots. Waves 1 Foot Or Less. Light Chop. |
| Sunday...North Winds Around 5 Knots, Becoming South In The Afternoon. Waves 1 Foot Or Less. Light Chop. |
| Sunday Night...Southwest Winds 5 To 10 Knots. Waves 1 Foot Or Less. Light Chop. |
| Monday...Southwest Winds Around 5 Knots. Waves 1 Foot Or Less. Smooth. A Slight Chance Of Showers And Thunderstorms In The Afternoon. |
| Monday Night...Southwest Winds Around 5 Knots. Waves 1 Foot Or Less. Smooth. A Slight Chance Of Showers And Thunderstorms After Midnight. |
| Tuesday...West Winds 5 To 10 Knots. Waves 1 Foot Or Less. Light Chop. A Chance Of Showers And Thunderstorms. |
| Tuesday Night...Southwest Winds Around 5 Knots. Waves 1 Foot Or Less. Smooth. A Slight Chance Of Showers And Thunderstorms. |
| Wednesday...Southwest Winds 5 To 10 Knots. Waves 1 Foot Or Less. Light Chop. A Slight Chance Of Showers And Thunderstorms In The Morning, Then A Chance Of Showers And Thunderstorms In The Afternoon. |
| Wednesday Night...Southwest Winds 5 To 10 Knots. Waves 1 Foot Or Less. Light Chop. A Slight Chance Of Showers And Thunderstorms In The Evening, Then A Chance Of Showers And Thunderstorms After Midnight. Winds And Waves Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Mobile AL 701pm CDT Fri August 21 2026 .UPDATE Issued at 525pm CDT Fri August 21 2026 Ongoing this afternoon, keeping a close eye on convection ongoing generally along and north of the I-10 corridor. Plenty of support in place for strong to severe thunderstorms, including ample dry air entrainment per recent GOES-16 Precipitable water, resulting in extremely high DCAPE across central MS/AL and plenty of available instability. Environmental favorability for severe weather is in place, but focus will be on any outflow boundary and/or seabreeze interactions to individual, pulse-like severe storms causing damaging downburst winds. REFS guidance/trends slides all convection south late this afternoon/evening, but not entirely sure this will happen as they interact with the post- seabreeze environment along the coast, with low confidence on this activity sagging south through the evening. If it does, the severe threat will transition into coastal marine areas around sunset with ongoing gusty winds the main risks. Drier air filters into the area tomorrow through Sunday, resulting in lower forecast Probability of Precipitation and greater PBL mixing to cause a reduction in the heat risk. Not anticipating the need for an advisory tomorrow as heat indices range in the 103-106 range, still hot though. Could still see an isolated storm along the seabreeze, but keeping Probability of Precipitation in the 10-20% range both Saturday and Sunday afternoons. Monday into next week, focus shifts to the northwest as we could likely see distinct PVA/impulses riding around the periphery of the ridge across the four corners region. This could introduce a series of long-distant MCS's from the central MS valley region into the northern Gulf coast. Something we'll need to carefully monitor for Monday and Tuesday. Mid to late week, we return right back to the typical summertime pattern but again with ongoing impulses from the north. Afternoon heat indices remain below criteria/heat risk impacts remain limited throughout the week with highs in the low 90's, but Probability of Precipitation remain elevated with daily localized strong to isolated severe storm risks. KLG Marine Issued at 325am CDT Fri August 21 2026 No impacts expected other than locally higher winds and seas possible near thunderstorms. /13 NOAA Mobile AL Office: Watches - Warnings - Advisories AL... Heat Advisory until 8pm CDT this evening for ALZ051>060-261>266. FL... Heat Advisory until 8pm CDT this evening for FLZ201>206. MS... Heat Advisory until 8pm CDT this evening for MSZ067-075-076-078- 079. GM...None. |
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