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 |
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.
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.
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

NEW! Add second zone forecast
Shell Island Click for Map 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 |   |
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 |
Eugene Island Click for Map 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 |   |
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
Hide  HelpNOTE: mouseover dotted underlined text for definition
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.
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.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA | 13 mi | 57 min | SE 6G | 76°F | 68°F | 30.01 | ||
AMRL1 - 8764227 - Amerada Pass, LA | 23 mi | 57 min | ESE 5.1G | 76°F | 70°F | 30.01 | ||
EINL1 | 29 mi | 57 min | ESE 17G | 77°F | 72°F | 30.04 | 74°F | |
BYGL1 - 8762482 - Bayou Gauche, LA | 32 mi | 57 min | 76°F | 77°F | 30.07 | |||
CARL1 | 49 mi | 57 min | 66°F |
Wind History for Tesoro Marine Terminal, LA
toggle option: (graph/table)
Airport Reports
Link to 1 hour of 5 minute data for KPTN
Terminal Aerodrome Forecast (TAF) for KPTN
Wind History Graph: PTN
(wind in knots)GEOS Local Image of Southern Mississippi Valley
Edit Hide
New Orleans/Baton Rouge, LA,

NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE