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Marine Weather and Tide Forecast for Bayou L'Ourse, LA

April 20, 2025 7:56 PM CDT (00:56 UTC) Change Location
Sunrise 6:29 AM   Sunset 7:34 PM
Moonrise 12:51 AM   Moonset 11:03 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
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NOTE: Zones were updated 3/20/2025
GMZ436 Atchafalaya And East Cote Blanche Bays- 418 Pm Cdt Sun Apr 20 2025

Tonight - Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Bay waters choppy.

Monday - South winds 5 to 10 knots. Bay waters light chop. A chance of showers with a slight chance of Thunderstorms.

Monday night - Southeast winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and Thunderstorms after midnight.

Tuesday - Southeast winds 5 to 10 knots. Bay waters light chop. A chance of showers with a slight chance of Thunderstorms.

Tuesday night - Southeast winds 5 to 10 knots. Bay waters light chop.

Wednesday - Southeast winds 5 to 10 knots. Bay waters light chop. A chance of showers and Thunderstorms.

Wednesday night - Southeast winds 5 to 10 knots. Bay waters light chop.

Thursday - Southeast winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and Thunderstorms.

Thursday night - Southeast winds 5 to 10 knots. Bay waters light chop.

Friday - Southeast winds 5 to 10 knots. Bay waters light chop.

Friday night - Southeast winds 5 to 10 knots. Bay waters light chop.
winds and waves higher in and near Thunderstorms.
GMZ400 418 Pm Cdt Sun Apr 20 2025

Synopsis -
light to moderate southerly flow will prevail through this week. Tides will run around a foot above normal.

7 Day Forecast for Marine Location Near Bayou L'Ourse, LA
   
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Tide / Current for Shell Island, Louisiana
  
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Shell Island
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Sun -- 01:51 AM CDT     Moonrise
Sun -- 03:01 AM CDT     0.09 feet Low Tide
Sun -- 06:33 AM CDT     Sunrise
Sun -- 12:04 PM CDT     Moonset
Sun -- 02:48 PM CDT     1.65 feet High Tide
Sun -- 07:35 PM CDT     Sunset
Sun -- 08:37 PM CDT     Last Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Shell Island, Louisiana does not exist in database. Press Edit above and select a valid nearby location.

Shell Island, Louisiana, Tide feet
12
am
0.6
1
am
0.3
2
am
0.2
3
am
0.1
4
am
0.1
5
am
0.2
6
am
0.3
7
am
0.5
8
am
0.7
9
am
0.9
10
am
1.2
11
am
1.3
12
pm
1.5
1
pm
1.6
2
pm
1.6
3
pm
1.6
4
pm
1.6
5
pm
1.6
6
pm
1.6
7
pm
1.5
8
pm
1.4
9
pm
1.3
10
pm
1.2
11
pm
1.1

Tide / Current for Eugene Island, Louisiana
  
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Eugene Island
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Sun -- 01:38 AM CDT     0.12 feet Low Tide
Sun -- 01:51 AM CDT     Moonrise
Sun -- 06:33 AM CDT     Sunrise
Sun -- 12:05 PM CDT     Moonset
Sun -- 01:29 PM CDT     2.15 feet High Tide
Sun -- 07:35 PM CDT     Sunset
Sun -- 08:37 PM CDT     Last Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Eugene Island, Louisiana does not exist in database. Press Edit above and select a valid nearby location.

Eugene Island, Louisiana, Tide feet
12
am
0.3
1
am
0.1
2
am
0.1
3
am
0.2
4
am
0.3
5
am
0.5
6
am
0.8
7
am
1
8
am
1.3
9
am
1.6
10
am
1.8
11
am
2
12
pm
2.1
1
pm
2.2
2
pm
2.1
3
pm
2.1
4
pm
2.1
5
pm
2
6
pm
1.9
7
pm
1.8
8
pm
1.7
9
pm
1.5
10
pm
1.3
11
pm
1

Area Discussion for New Orleans/Baton Rouge, LA
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FXUS64 KLIX 202031 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 331 PM CDT Sun Apr 20 2025

New SHORT TERM, LONG TERM, MARINE

SHORT TERM
(This evening through Monday night)
Issued at 325 PM CDT Sun Apr 20 2025

Onshore flow continues to feed moisture into the area which has helped several spotty showers form today. Chances for these spotty showers will continue into the evening hours before we see better rain chances on Monday. These increased rain chances come as a frontal boundary comes to a slow just to our north and west and stalls out. It is also a little bit gusty out there today due to the surface pressure gradient, but this will start to ease as we head into the evening and overnight hours.

Taking a look at some CAM forecast soundings for Monday, I would not be surprised to see a storm or two drop some near severe hail or have some locally strong wind gusts. 500MB temperatures are ~-12C, DCAPE is ~500-700J/Kg, and lapse rates look to be plenty supportive. The only noticeable issue is the lack of shear, but a few strong to near severe storms cannot be ruled out.

LONG TERM
(Tuesday through Saturday night)
Issued at 325 PM CDT Sun Apr 20 2025

Tuesday will continue to see scattered rain and storm chances throughout the day, with PoPs peaking in the afternoon hours around ~60-70% especially for the northern half of the CWA A couple disturbances from Texas will move through our area throughout the long term period, or at least through Thursday, before we quiet down some into the weekend.

Late Tuesday evening an MCS looks to fire back in western Texas that will move this way. Both the globals do show this MCS making it into at least a portion of our CWA during the day on Wednesday.
Additionally, any residual outflow boundaries or sea/lake breeze boundaries will serve as some lift for showers and thunderstorms to fire at random across the area. Overall, following a very dry couple weeks for us we do look like we are heading back into a more active pattern.

AVIATION
(18Z TAFS)
Issued at 1225 PM CDT Sun Apr 20 2025

VFR conditions will persist through this afternoon, but heading into the evening hours we will see the return of lower cigs. This brings MVFR and eventually IFR conditions overnight due to the lower ceilings. Possibility of some patchy fog, mainly for MCB area, around daybreak bringing some IFR vis.

MARINE
Issued at 325 PM CDT Sun Apr 20 2025

Winds have backed down some from earlier this morning which allowed the Small Craft to fall off at 10am. We will continue to see winds come down as the pressure gradient eases late this evening and overnight. Otherwise onshore flow will continue through the next several days, but remaining on the lighter side as we don't really see any organized systems roll through. Several rain and storm chances through the week however, which could bring locally higher gusts and waves at times.

PRELIMINARY POINT TEMPS/POPS
MCB 68 84 66 84 / 20 70 30 80 BTR 70 85 67 85 / 20 60 10 80 ASD 69 83 66 82 / 40 60 30 60 MSY 71 83 69 83 / 20 50 20 60 GPT 70 80 68 79 / 30 50 30 60 PQL 67 83 66 82 / 20 30 20 50

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


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 13 mi57 minSE 6G8.9 76°F 68°F30.01
AMRL1 - 8764227 - Amerada Pass, LA 23 mi57 minESE 5.1G8 76°F 70°F30.01
EINL1 29 mi57 minESE 17G20 77°F 72°F30.0474°F
BYGL1 - 8762482 - Bayou Gauche, LA 32 mi57 min 76°F 77°F30.07
CARL1 49 mi57 min 66°F


Wind History for Tesoro Marine Terminal, LA
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Airport Reports
   
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KPTN HARRY P WILLIAMS MEMORIAL,LA 18 sm60 minSE 1010 smMostly Cloudy79°F72°F79%30.05
KHUM HOUMATERREBONNE,LA 19 sm41 minESE 105 smOvercast77°F70°F78%30.06

Weather Map
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GEOS Local Image of Southern Mississippi Valley  
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New Orleans/Baton Rouge, LA,





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