Sunrise 6:28 AM   Sunset 7:30 PM Moonrise 3:04 PM   Moonset 3:53 AM

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GMZ552 Expires:202404190915;;974159 Fzus54 Klix 182007 Cwflix
coastal waters forecast national weather service new orleans la 307 pm cdt Thu apr 18 2024
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.
gmz550-552-190915- 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- 307 pm cdt Thu apr 18 2024
Tonight - South winds 5 to 10 knots. Seas around 2 feet. Friday - Southeast winds around 5 knots. Seas 1 to 2 feet. Friday night - South winds 5 to 10 knots. Seas 1 to 2 feet. Saturday - Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Saturday night - Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and Thunderstorms after midnight. Sunday - South winds 5 to 10 knots, becoming northwest 10 to 15 knots in the afternoon. Seas 1 to 2 feet, building to 2 to 3 feet in the afternoon. A slight chance of Thunderstorms. Showers likely, mainly in the morning. Sunday night - North winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Monday - Northeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Monday night - East winds around 10 knots. Seas 1 to 2 feet. Tuesday - Southeast winds around 10 knots. Seas around 2 feet. A slight chance of showers and Thunderstorms in the afternoon. Tuesday night - Southeast winds 5 to 10 knots. Seas around 2 feet.
winds and seas higher in and near Thunderstorms.

GMZ500 307 Pm Cdt Thu Apr 18 2024
Synopsis for pascagoula to atchafalaya river out 60 nm -
a persistent south to southeast wind of around 10 knots will remain in place through Saturday. A weak cold front will slip through the waters Sunday morning, and winds will shift to northerly which will remain into Monday as high pressure moves in and exits east. There could be a small window of exercise caution conditions behind this boundary.

FXUS64 KLIX 182006 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 306 PM CDT Thu Apr 18 2024

New SHORT TERM, LONG TERM, AVIATION, MARINE

SHORT TERM
(This evening through Friday night)
Issued at 303 PM CDT Thu Apr 18 2024

A fairly broad upper level trough pushing south out of Canada will continue to expand across the High Plains to upper Mississippi River Valley the rest of this afternoon and evening. A cold front associated with this trough is moving southeast through OK, TX, and AR. Southerly flow across the region has been slowly increasing moisture levels throughout the column with highest PW's pooling ahead of the boundary in east Texas and northern/central LA. Closer to the CWA, PW's are around 1.5". A weak shortwave sliding across the Lower Mississippi Valley combined with modest low and upper level moisture is just enough to promote scattered light showers/sprinkles. CAMs seem to pick up on this much better than the global models. Therefore, have added them to the afternoon forecast.
Not much in the way of QPF expected, so minimal impacts expected.
Showers should dissipated this evening and overnight with loss of daytime heating. Clouds will hang around tonight and areas of mostly light fog will be possible.

MEFFER

LONG TERM
(Saturday through Wednesday night)
Issued at 303 PM CDT Thu Apr 18 2024

The above mentioned upper trough will continue east across the Great Lakes Friday and Saturday. The upper low aloft will still be fairly flat/zonal with possibly weak ridging in place. That'll still promote slightly more moderating temps. Could see an isolated location or 2 reach 90 degrees on Friday. That'll be within the realm of record highs for the local area.

As we go through the weekend, models show a shortwave on the backside of the northern trough moving through the region. This is what'll be needed to drive a cold front through the CWA on Sunday.
Ample moisture in place with lift from the front will be a good setup for increasing showers and thunderstorms. Latest forecast depicts this with rain chances increasing to near 80% and rainfall totals around an inch. This cold front won't be particularly strong, so only looking at a day of below normal temps with moderating conditions quickly returning as well as above normal temps Tuesday onward.

MEFFER

AVIATION
(18Z TAFS)
Issued at 303 PM CDT Thu Apr 18 2024

A mix of MVFR and VFR cigs dominate the short term with possibly more sites become VFR as ceilings try to rise. Later this evening and overnight, cloud decks will lower back to MVFR or IFR with the potential for areas of light fog. A few terminals may see moderate to occasionally dense fog at times. Expect conditions to start improving a couple/few hours after sunrise.

MEFFER

MARINE
Issued at 303 PM CDT Thu Apr 18 2024

A surface high pressure centered east of the local coastal waters will remain generally in that position through the rest of this week and starting this weekend. That'll keep onshore flow in place, but weaker pressure gradient should limit wind speeds and sea/wave heights. Current global model runs indicate that a cold front will move through the coast waters Sunday afternoon. Cold air advection won't be particularly strong with this boundary and thus likely only looking at about 12 to 18 hours of Exercise Caution conditions.

MEFFER

PRELIMINARY POINT TEMPS/POPS
MCB 64 85 65 80 / 0 10 0 40 BTR 69 89 69 86 / 0 0 0 20 ASD 68 87 67 85 / 0 0 0 20 MSY 70 87 69 84 / 0 10 0 10 GPT 68 83 67 82 / 0 10 0 20 PQL 66 86 65 84 / 0 0 0 20

LIX WATCHES/WARNINGS/ADVISORIES
LA...None.
GM...None.
MS...None.
GM...None.

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Barataria Pass
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Thu -- 03:52 AM CDT     Moonset
Thu -- 05:05 AM CDT     0.10 feet Low Tide
Thu -- 06:29 AM CDT     Sunrise
Thu -- 03:03 PM CDT     Moonrise
Thu -- 07:28 PM CDT     Sunset
Thu -- 07:37 PM CDT     0.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Barataria Pass, Mississippi River Delta, Louisiana, Tide feet

Quatre Bayous Pass
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Thu -- 03:52 AM CDT     Moonset
Thu -- 05:33 AM CDT     0.11 feet Low Tide
Thu -- 06:29 AM CDT     Sunrise
Thu -- 03:03 PM CDT     Moonrise
Thu -- 07:28 PM CDT     Sunset
Thu -- 08:55 PM CDT     0.96 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Quatre Bayous Pass, Mississippi River Delta, Louisiana, Tide feet

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