Coastal Waters Forecast
Issued by NWS New Orleans/Baton Rouge, LA
Issued by NWS New Orleans/Baton Rouge, LA
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409 FZUS54 KLIX 251037 CWFLIX Coastal Waters Forecast National Weather Service New Orleans LA 436 AM CST Tue Nov 25 2025 Pascagoula to Atchafalaya River out to 60 NM Seas are provided as a range of the average height of the highest 1/3 of the waves...along with the occasional height of the average highest 10 percent of the waves. GMZ500-GMZ501-252300- 436 AM CST Tue Nov 25 2025 .SYNOPSIS FOR PASCAGOULA TO ATCHAFALAYA RIVER OUT 60 NM... A warm front that was located near the coast has surged north and is well inland now as a cold front approaches from the west. Scattered showers and thunderstorms may develop across the coastal waters early this morning through the afternoon. Shear is quite light and instability just enough for thunder but not severe. A tightening pressure gradient has beginning to increase winds west of the MS River per recent marine obs. With those speeds exceeding 20 knots, have recently initiated a Small Craft Advisory. This matches up perfectly with model boundary layer wind forecast. That forecast also shows those winds dropping off around sunrise as the tight pressure gradient will be a short wind mostly due to the proximity of the surface low to the local area and the progressive nature of this system. The actual front will finally move through the coastal waters Wednesday morning as deepening comma low rolls into the Great Lakes Region. The combination of cold air advection over the relatively warm waters, and the pressure gradient between the high and low will cause winds to strengthen into the 20-25kt range and Small Craft Advisories will likely be needed Wednesday afternoon through at least midday Thursday. As the high settles into the area later in the week, winds will ease and turn back to the southeast as the high shifts east of the area by Saturday. $$ GMZ530-252300- Lake Pontchartrain and Lake Maurepas- 436 AM CST Tue Nov 25 2025 .TODAY...Southwest winds 5 to 10 knots. Waves around 2 feet. A chance of showers. A chance of thunderstorms early this morning. A slight chance of thunderstorms this afternoon. .TONIGHT...West winds 5 to 10 knots, becoming north 10 to 15 knots after midnight. Waves 1 to 2 feet, building to 2 to 3 feet after midnight. .WEDNESDAY...North winds 10 to 15 knots with gusts up to 20 knots. Waves 2 to 3 feet. .WEDNESDAY NIGHT...North winds 15 to 20 knots. Waves 3 to 4 feet. .THURSDAY...Northeast winds 10 to 15 knots with gusts up to 20 knots, becoming north 5 to 10 knots in the afternoon. Waves 2 to 3 feet. .THURSDAY NIGHT...Northeast winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Waves 2 to 3 feet. .FRIDAY...East winds 10 to 15 knots. Waves 2 to 3 feet. .FRIDAY NIGHT...East winds 10 to 15 knots. Waves 2 to 3 feet. .SATURDAY...Southeast winds 10 to 15 knots. Waves 2 to 3 feet. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Waves 2 to 3 feet. A slight chance of showers in the evening, then a chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ534-252300- Lake Borgne- 436 AM CST Tue Nov 25 2025 .TODAY...South winds 10 to 15 knots. Waves 2 to 3 feet. A chance of thunderstorms early this morning, then a slight chance of thunderstorms late this morning and early afternoon. A chance of showers. .TONIGHT...West winds 5 to 10 knots, becoming north 10 to 15 knots after midnight. Waves 1 foot or less, then 2 to 3 feet after midnight. .WEDNESDAY...North winds around 15 knots with gusts up to 20 knots. Waves 2 to 3 feet. .WEDNESDAY NIGHT...North winds 15 to 20 knots. Waves 3 to 4 feet. .THURSDAY...Northeast winds 15 to 20 knots, becoming north around 10 knots in the afternoon. Waves 2 to 4 feet. .THURSDAY NIGHT...North winds 10 to 15 knots, becoming northeast 15 to 20 knots after midnight. Waves 2 to 3 feet. .FRIDAY...Northeast winds 15 to 20 knots, becoming east 10 to 15 knots in the afternoon. Waves 2 to 3 feet. .FRIDAY NIGHT...East winds 10 to 15 knots. Waves 2 to 3 feet. .SATURDAY...Southeast winds around 15 knots. Waves 2 to 3 feet. .SATURDAY NIGHT...Southeast winds around 15 knots. Waves around 3 feet. A slight chance of showers in the evening, then a chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ532-252300- Mississippi Sound- 436 AM CST Tue Nov 25 2025 .TODAY...South winds 10 to 15 knots with gusts up to 20 knots. Waves around 3 feet. A slight chance of thunderstorms this morning, then a chance of thunderstorms early this afternoon. A chance of showers. .TONIGHT...Southwest winds around 10 knots, becoming northwest after midnight. Waves 2 to 3 feet. A slight chance of showers and thunderstorms in the evening. .WEDNESDAY...North winds 10 to 15 knots. Waves 2 to 3 feet. .WEDNESDAY NIGHT...North winds 15 to 20 knots. Waves 3 to 4 feet. .THURSDAY...North winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Waves 2 to 4 feet. .THURSDAY NIGHT...Northeast winds 10 to 15 knots. Waves 2 to 4 feet. .FRIDAY...Northeast winds 10 to 15 knots. Waves 2 to 4 feet. .FRIDAY NIGHT...East winds 10 to 15 knots. Waves 2 to 3 feet. .SATURDAY...Southeast winds 10 to 15 knots. Waves around 3 feet. .SATURDAY NIGHT...Southeast winds around 15 knots. Waves 3 to 4 feet. A slight chance of showers in the evening, then a chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ536-538-252300- Chandeleur Sound-Breton Sound- 436 AM CST Tue Nov 25 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS MORNING... .TODAY...South winds 10 to 15 knots. Waves 2 to 3 feet. A slight chance of thunderstorms this morning. A chance of showers. A chance of thunderstorms this afternoon. .TONIGHT...Southwest winds around 10 knots, becoming northwest after midnight. Waves 2 to 3 feet. .WEDNESDAY...North winds 15 to 20 knots. Waves 3 to 4 feet. .WEDNESDAY NIGHT...North winds 15 to 20 knots with gusts up to 25 knots. Waves 4 to 5 feet. .THURSDAY...Northeast winds 15 to 20 knots, becoming north 10 to 15 knots in the afternoon. Waves 3 to 5 feet. .THURSDAY NIGHT...Northeast winds 15 to 20 knots. Waves 3 to 4 feet. .FRIDAY...Northeast winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Waves 3 to 4 feet. .FRIDAY NIGHT...East winds around 15 knots. Waves around 3 feet. .SATURDAY...Southeast winds around 15 knots. Waves 3 to 4 feet. .SATURDAY NIGHT...Southeast winds around 15 knots. Waves 3 to 4 feet. A slight chance of showers in the evening, then a chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ555-557-252300- Coastal Waters from Boothville LA to Southwest Pass of the Mississippi River out 20 nm- Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM- 436 AM CST Tue Nov 25 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS MORNING... .TODAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. A slight chance of showers and thunderstorms. .TONIGHT...Southwest winds 5 to 10 knots, becoming northwest 10 to 15 knots after midnight. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds and west 2 feet at 3 seconds. A slight chance of showers and thunderstorms. .WEDNESDAY...North winds around 15 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 4 seconds and southeast 2 feet at 6 seconds. .WEDNESDAY NIGHT...North winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 5 seconds. .THURSDAY...North winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 6 seconds. .THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 4 seconds. .FRIDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 6 seconds. .FRIDAY NIGHT...East winds around 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds. .SATURDAY...Southeast winds around 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds. .SATURDAY NIGHT...Southeast winds around 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 6 seconds. A slight chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ550-552-252300- Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm- Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM- 436 AM CST Tue Nov 25 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS MORNING... .TODAY...Southwest winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots late. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southwest 4 feet at 6 seconds. A slight chance of showers and thunderstorms. .TONIGHT...West winds 5 to 10 knots, becoming north 10 to 15 knots with gusts up to 20 knots after midnight. Seas 2 to 3 feet. Wave Detail: West 2 feet at 5 seconds and south 2 feet at 6 seconds. .WEDNESDAY...North winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 4 seconds and southeast 2 feet at 6 seconds. .WEDNESDAY NIGHT...North winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 3 seconds and southeast 1 foot at 6 seconds. .THURSDAY...Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 2 seconds. .THURSDAY NIGHT...Northeast winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 3 seconds. .FRIDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. .SATURDAY...Southeast winds around 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 5 seconds. .SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at 6 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ575-577-252300- Coastal Waters from Stake Island LA to Southwest Pass of the Mississippi River from 20 to 60 nm- Coastal waters from Pascagoula Mississippi to Stake Island Louisiana out 20 to 60 NM- 436 AM CST Tue Nov 25 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS MORNING... .TODAY...South winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: South 3 feet at 5 seconds. A slight chance of showers. A slight chance of thunderstorms this afternoon. .TONIGHT...Southwest winds around 10 knots, becoming northwest after midnight. Seas around 3 feet. Wave Detail: Southwest 3 feet at 6 seconds. A chance of showers. A chance of thunderstorms, mainly in the evening. .WEDNESDAY...North winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet at 5 seconds and southeast 3 feet at 7 seconds. A slight chance of showers and thunderstorms in the morning. .WEDNESDAY NIGHT...North winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 7 feet at 6 seconds. .THURSDAY...North winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 7 seconds. .THURSDAY NIGHT...Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 6 seconds. .FRIDAY...Northeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 6 feet at 7 seconds. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 6 seconds. .SATURDAY...Southeast winds around 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 6 seconds. .SATURDAY NIGHT...Southeast winds around 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 6 seconds. A slight chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ570-572-252300- Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM- Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM- 436 AM CST Tue Nov 25 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST EARLY THIS MORNING... .TODAY...Southwest winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 4 feet at 6 seconds. A slight chance of showers. A slight chance of thunderstorms late this morning and afternoon. .TONIGHT...West winds 5 to 10 knots, becoming north 10 to 15 knots with gusts up to 20 knots after midnight. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds and west 2 feet at 6 seconds. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .WEDNESDAY...North winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds and north 4 feet at 5 seconds. A slight chance of showers and thunderstorms in the morning. .WEDNESDAY NIGHT...North winds 15 to 20 knots, becoming northeast 20 to 25 knots after midnight. Seas 5 to 6 feet, occasionally to 8 feet, building to 6 to 8 feet, occasionally to 10 feet after midnight. Wave Detail: Northeast 6 feet at 6 seconds, becoming northeast 7 feet at 7 seconds. .THURSDAY...Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 7 seconds. .THURSDAY NIGHT...Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 6 feet at 6 seconds. .FRIDAY...East winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 7 seconds. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East 7 feet at 7 seconds. .SATURDAY...Southeast winds around 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 7 seconds. .SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East 6 feet at 7 seconds. A slight chance of showers. Winds and seas higher in and near thunderstorms. $$