Sunrise 6:15 AM   Sunset 7:38 PM Moonrise 1:23 AM   Moonset 11:37 AM

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GMZ534 Lake Borgne- 949 Am Cdt Tue Apr 30 2024
Rest of today - North winds 5 to 10 knots, becoming southeast this afternoon. Waves 1 foot or less. Tonight - South winds 5 to 10 knots, becoming southwest after midnight. Waves 1 foot or less. Wednesday - East winds 5 to 10 knots, becoming southeast in the afternoon. Waves 1 foot or less, then around 2 feet in the afternoon. Patchy dense fog in the morning. A slight chance of showers in the afternoon. Wednesday night - Southeast winds 5 to 10 knots. Waves around 2 feet. Thursday - Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Thursday night - Southeast winds 10 to 15 knots. Waves 2 to 3 feet.Friday - Southeast winds around 10 knots. Waves around 2 feet. A slight chance of showers and Thunderstorms in the afternoon. Friday night - Southeast winds 5 to 10 knots. Waves around 2 feet in the evening, then 1 foot or less. Saturday - Southeast winds around 10 knots. Waves around 2 feet. Saturday night - Southeast winds 5 to 10 knots. Waves around 2 feet in the evening, then 1 foot or less.
winds and waves higher in and near Thunderstorms.

GMZ500 949 Am Cdt Tue Apr 30 2024
Synopsis for pascagoula to atchafalaya river out 60 nm -
the rest of the week should be relatively benign with light onshore flow.

FXUS64 KLIX 301350 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 850 AM CDT Tue Apr 30 2024

New UPDATE

UPDATE
Issued at 847 AM CDT Tue Apr 30 2024

Dense fog continues to persist over the River Parishes and portions of metro Baton Rouge. Satellite analysis and traffic cameras show that the fog bank has not yet begun to erode substantially and that visibilties remain extremely reduced. 12z sounding data does show some very dry air in the mid-levels, and this will begin to mix down into the boundary layer as temperatures warm over the next hour or two. This will allow the fog bank to begin eroding, and have only extended the advisory for western portions of the CWA by an hour until 10 AM. Some patchy fog may linger beyond 10 AM, but expect to see clear conditions in place by 1030 to 11 AM. PG

SHORT TERM
(Today through Wednesday)
Issued at 232 AM CDT Tue Apr 30 2024

Fog will be the weather maker this morning. Most locations should fall below 1/2 mile and many less than 1/4 mile. Dense fog advisory has been posted for most of the area. The only locations that may not have an issue with this is the eastern coastline of LA and some of coastal Mississippi. This is radiation fog so it will need very little to no wind, no cloud cover and mainly outside heat islands.
The cloudy skies are hanging on over areas where the dense fog advisory is not valid. This cloud cover is expected to hand on through sunrise in these areas. Some sh/ts are also hangin on over Jackson Co. this morning. But as the cloud cover slowly moves east, we may need to bring these areas in for fog as well. But current thinking is that these cloudy areas should be clear(of fog) for now.
The moisture is now in place for fog again tonight. And again, it will be a radiation fog night as well so areas where there are no cloudy cover and calm winds will likely see this again tonight/Wed morning. A weak trough axis exists from Houston to the SE well offshore. This will begin to move back to the north later today and should be near or just on the coast by Wed. It may be just enough to help a few sh/ts develop with heating. Widespread rain or storms are not expected with this, but it could bring some rain to areas in and around the Atchafalaya Basin.

LONG TERM
(Wednesday night through Monday)
Issued at 232 AM CDT Tue Apr 30 2024

Fog will remain a concern for Wed night/Thu morning as well as long as we still have enough moisture trapped in the BL. We should also see a similar type of event that occurred over our area yesterday.
But this time, it may be farther north. An MCS feature looks to break away from the front over central TX Thursday and move rapidly east along the interstate 20 corridor. At the same time, a cold front will orient east/west near the Missouri/Arkansas line and stall. This will help keep an unsettled environment along and south of this line as several disturbances move over and south of this line for the next several days Thursday. We will need to look at each day individually later this week to break down whether we will get some of this activity.

AVIATION
(12Z TAFS)
Issued at 232 AM CDT Tue Apr 30 2024

Mainly IFR to LIFR cigs and vis this morning for most areas. This will lift into VFR levels by mid morning. There is a good possibility of FG developing at some terminals again tonight/Wed morning.

MARINE
Issued at 232 AM CDT Tue Apr 30 2024

Light and variable winds will begin to become SE today and should stay this way through this fcast remaining around 10kt for the most part.

PRELIMINARY POINT TEMPS/POPS
MCB 84 62 86 64 / 0 0 30 0 BTR 89 67 88 69 / 0 0 40 0 ASD 86 66 87 67 / 10 0 20 0 MSY 85 69 86 71 / 10 0 20 0 GPT 84 66 84 67 / 10 0 10 0 PQL 86 64 88 64 / 10 0 10 0

LIX WATCHES/WARNINGS/ADVISORIES
LA...Dense Fog Advisory until 10 AM CDT this morning for LAZ034-035- 046>048-056>060-065-066-081>086.

GM...None.
MS...None.
GM...None.

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Paris Road Bridge
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Tue -- 01:23 AM CDT     Moonrise
Tue -- 06:17 AM CDT     Sunrise
Tue -- 07:55 AM CDT     -0.35 feet Low Tide
Tue -- 11:36 AM CDT     Moonset
Tue -- 07:36 PM CDT     Sunset
Tue -- 08:03 PM CDT     1.32 feet High Tide
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Paris Road Bridge, Mississippi River Delta, Louisiana, Tide feet

Chef Menteur, Chef Menteur Pass, Louisiana, Tide feet

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