Marine Weather and Tide Forecast for Montegut, LA

UPDATE
Issued at 337 AM CST Sat Feb 28 2026

Expanded the Dense Fog Advisory to include all of the Southshore.
That said fog appears to be bouncing back and forth so the dense fog may be more patchy to areas while light to moderate fog and low clouds will persist over the entire area. As for Marine fog not seeing that develop yet looking at cameras over the twice span or causeway but will continue to monitor. /CAB/

SHORT TERM
(Tonight through Sunday night)
Issued at 1112 PM CST Fri Feb 27 2026 The weak cold front that brought this morning's showers and storms is now moving offshore into the Gulf. Drier and slightly cooler air is entering the area now. Lows will generally be about 10 degrees cooler than yesterday (so around the 50s), but despite the cooling, this is still slightly above normal for this time of year. The potential for fog is a little murky tomorrow morning.
While there could be some patchy fog which could be dense in a few spots, with the drier air already moving through, the current thinking is the window of opportunity is going to be limited and along/south of the I-10/I-12 corridor. That being said this is still a lower than usual confidence in the forecast especially with guidance being all over the place for visibility.
Highs tomorrow and Sunday will be warm for this time of year, with a some spots possibly hitting 80 and the rest of the area not too far behind in the upper 70s.

LONG TERM
(Monday night through Friday night)
Issued at 1112 PM CST Fri Feb 27 2026

Weak ridging will hold over the area through around mid week.
Above average temperatures will continue through the rest of next week with much of the area near or above 80 degrees especially by mid week. Gulf moisture will also be advecting into the area bringing more humid conditions. A few shortwaves pass nearby around mid week bringing a low to medium chance of some showers and thunderstorms. As of right now the potential for heavy rainfall will be much further north of us with the better environment setup well into the midwest.

AVIATION
(12Z TAFS)
Issued at 532 AM CST Sat Feb 28 2026

Most terminals are in VLIFR status due to both cigs and vsbys however, a few are not quite that impacted but still dealing with low cigs and/or vsbys. The thinking is that both vsbys and cigs will quicklyu improve as the sun rises however it may take a little longer over NEW where the lake may slow things down. Once terminals move into VFR status they will stay that way through the day. /CAB/

MARINE
Issued at 1112 PM CST Fri Feb 27 2026

Benign conditions will settle over the coastal waters for the weekend. Light northeasterly to easterly winds will prevail through Monday before shifting to a stronger offshore flow starting Tuesday.
Low chances of rain return for the offshore waters around mid week.

LIX WATCHES/WARNINGS/ADVISORIES
LA...Dense Fog Advisory until 10 AM CST this morning for LAZ039-058- 060-064-071-076>082-087>090.

GM...Dense Fog Advisory until 11 AM CST this morning for GMZ530.

MS...Dense Fog Advisory until 10 AM CST this morning for MSZ077- 083>088.

GM...