Marine Weather and Tide Forecast for Slidell, LA
April 19, 2025 2:45 AM CDT (07:45 UTC) Change Location
 | Sunrise 6:25 AM Sunset 7:30 PM Moonrise 12:59 AM Moonset 10:55 AM |
GMZ534 Lake Borgne- 933 Pm Cdt Fri Apr 18 2025
Rest of tonight - Southeast winds around 10 knots. Waves around 2 feet.
Saturday - Southeast winds 10 to 15 knots with gusts up to 20 knots. Waves 2 to 3 feet.
Saturday night - Southeast winds 10 to 15 knots with gusts up to 20 knots. Waves around 2 feet.
Sunday - Southeast winds 10 to 15 knots with gusts up to 20 knots. Waves 2 to 3 feet.
Sunday night - Southeast winds 10 to 15 knots with gusts up to 20 knots. Waves 2 to 3 feet. A slight chance of showers and Thunderstorms after midnight.
Monday - Southeast winds around 10 knots. Waves around 2 feet. A chance of showers. A slight chance of Thunderstorms in the morning, then a chance of Thunderstorms in the afternoon.
Monday night - South winds 5 to 10 knots. Waves 1 foot or less. A slight chance of Thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight.
Tuesday - Southeast winds 5 to 10 knots. Waves 1 foot or less. A chance of Thunderstorms. A chance of showers in the morning, then showers likely in the afternoon.
Tuesday night - Southeast winds 5 to 10 knots. Waves 1 foot or less.
Wednesday - Southeast winds 5 to 10 knots. Waves 1 foot or less, then around 2 feet in the afternoon. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Wednesday night - Southeast winds 5 to 10 knots. Waves around 2 feet.
winds and waves higher in and near Thunderstorms.
winds and waves higher in and near Thunderstorms.
GMZ500 933 Pm Cdt Fri Apr 18 2025
Synopsis for pascagoula to atchafalaya river out 60 nm -
an onshore flow pattern will be in place through much of next week. Winds will also remain elevated through Sunday as a low pressure system passes to the north of the waters. Seas will also increase to up to 6 to 7 feet in the outer gulf waters as a combination of wind waves and swell creates hazardous boating conditions. However, the protected sounds and lakes will see better conditions over the weekend as winds and seas remain lower. Conditions will gradually improve on Monday and Tuesday as winds fall below 15 knots.
an onshore flow pattern will be in place through much of next week. Winds will also remain elevated through Sunday as a low pressure system passes to the north of the waters. Seas will also increase to up to 6 to 7 feet in the outer gulf waters as a combination of wind waves and swell creates hazardous boating conditions. However, the protected sounds and lakes will see better conditions over the weekend as winds and seas remain lower. Conditions will gradually improve on Monday and Tuesday as winds fall below 15 knots.
7 Day Forecast for Marine Location Near Slidell, LA
NEW! Add second zone forecast
| Long Point Click for Map Sat -- 12:58 AM CDT Moonrise Sat -- 04:03 AM CDT -0.23 feet Low Tide Sat -- 06:26 AM CDT Sunrise Sat -- 10:54 AM CDT Moonset Sat -- 05:07 PM CDT 1.10 feet High Tide Sat -- 07:28 PM CDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
Long Point, Lake Borgne, Louisiana, Tide feet
| 12 am |
| 0.1 |
| 1 am |
| -0 |
| 2 am |
| -0.1 |
| 3 am |
| -0.2 |
| 4 am |
| -0.2 |
| 5 am |
| -0.2 |
| 6 am |
| -0.1 |
| 7 am |
| -0.1 |
| 8 am |
| 0.1 |
| 9 am |
| 0.2 |
| 10 am |
| 0.3 |
| 11 am |
| 0.5 |
| 12 pm |
| 0.6 |
| 1 pm |
| 0.8 |
| 2 pm |
| 0.9 |
| 3 pm |
| 1 |
| 4 pm |
| 1.1 |
| 5 pm |
| 1.1 |
| 6 pm |
| 1.1 |
| 7 pm |
| 1 |
| 8 pm |
| 0.9 |
| 9 pm |
| 0.8 |
| 10 pm |
| 0.6 |
| 11 pm |
| 0.4 |
| Paris Road Bridge Click for Map Sat -- 12:59 AM CDT Moonrise Sat -- 06:28 AM CDT Sunrise Sat -- 07:31 AM CDT -0.25 feet Low Tide Sat -- 10:56 AM CDT Moonset Sat -- 07:29 PM CDT Sunset Sat -- 07:47 PM CDT 1.21 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Paris Road Bridge, Mississippi River Delta, Louisiana, Tide feet
| 12 am |
| 0.7 |
| 1 am |
| 0.5 |
| 2 am |
| 0.3 |
| 3 am |
| 0.1 |
| 4 am |
| -0 |
| 5 am |
| -0.1 |
| 6 am |
| -0.2 |
| 7 am |
| -0.2 |
| 8 am |
| -0.2 |
| 9 am |
| -0.2 |
| 10 am |
| -0.1 |
| 11 am |
| 0 |
| 12 pm |
| 0.2 |
| 1 pm |
| 0.4 |
| 2 pm |
| 0.5 |
| 3 pm |
| 0.7 |
| 4 pm |
| 0.9 |
| 5 pm |
| 1 |
| 6 pm |
| 1.1 |
| 7 pm |
| 1.2 |
| 8 pm |
| 1.2 |
| 9 pm |
| 1.2 |
| 10 pm |
| 1.1 |
| 11 pm |
| 1 |
Area Discussion for New Orleans/Baton Rouge, LA
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FXUS64 KLIX 190447 AFDLIX
Area Forecast Discussion National Weather Service New Orleans LA 1147 PM CDT Fri Apr 18 2025
New AVIATION
SHORT TERM
(This evening through Saturday night)
Issued at 230 PM CDT Fri Apr 18 2025
Upper ridging over the northern Gulf Coast states and Gulf. Upper troughing extends from western Ontario to southern California, with another ridge over the Pacific Northwest. At the surface, high pressure was off the Carolina coast, and over the Canadian Rockies. Low pressure was over Wisconsin with a cold front to the Texas Panhandle. This was producing low level southerly flow across the area. Away from immediate coastal areas (upper 70s), temperatures were in the lower and middle 80s with dew points in the 60s under partly to mostly sunny skies.
The upper ridging will progress eastward to the Georgia coast by Sunday morning with the southern portion of the upper trough extending from the Dakotas to New Mexico at that time.
Precipitable water values won't change much through Saturday night, remaining around 1 inch, with most of that below 900 mb.
That may produce a bit more cloud cover, especially during the late night and morning hours, but no significant precipitation is expected. NBM temperature guidance is pretty close to the GFS/ECMWF numbers, and is accepted. We'll be above normal for mid to late April, but with a fair amount of wind, it won't be oppressive for outdoor activities.
Current forecast sustained winds will generally be in the 15 to 20 mph range for Saturday with some gusts to close to 30 mph. That will be short of our advisory criteria. While we are in a prolonged period of southerly winds, current guidance indicates water levels should be short of what would cause coastal flooding issues.
LONG TERM
(Sunday through Thursday night)
Issued at 230 PM CDT Fri Apr 18 2025
Upper ridging off the Georgia and Florida coasts will remain in place early next week, although the axis will re-orient more northeast-southwest. The southern end of the trough over New Mexico will lift northeastward to the western Great Lakes by Monday night with the mid level flow across the local area becoming more zonal or at least west-southwesterly for much of the workweek next week. We won't have an actual frontal passage across the area during the long term portion of the forecast, but conditions are likely to be somewhat more favorable for the development of showers and thunderstorms. This would be mainly during the afternoon and evening hours from Monday into midweek.
Shear profiles are rather lacking on forecast soundings across the area, so at this time, severe weather doesn't appear to be a major threat locally, with the main concern to our northwest and north, generally north of Interstate 20. Similarly, forecast moisture levels are expected to be from the 50th to 75th percentile at best, climatologically, so any heavy rain concerns will also be north and west of the area.
Little day to day change in temperatures, both highs and lows, with no need to make significant changes to NBM values.
AVIATION
(06Z TAFS)
Issued at 1145 PM CDT Fri Apr 18 2025
MVFR to VFR conditions will prevail for most of the forecast period. There could be brief dips into IFR for both ceilings and vis (some patchy fog is possible in the early morning hours through sunrise or so). Winds will continue to be southerly gusting up to 20 to 25 knots during the day. -BL
MARINE
Issued at 230 PM CDT Fri Apr 18 2025
Expect several periods where winds in marine areas could approach 20 knots over the next couple of days, especially over the western waters. However, no indications of any prolonged periods where wind conditions would justify a Small Craft Advisory. With a prolonged persistent southerly fetch, seas may necessitate advisories by about Sunday over the open waters. That would be most likely over the western open waters. Will continue to monitor over the next day or so.
PRELIMINARY POINT TEMPS/POPS
MCB 66 85 67 84 / 0 0 0 10 BTR 69 86 70 86 / 0 0 0 10 ASD 68 83 68 83 / 0 0 0 10 MSY 71 84 71 83 / 0 0 0 10 GPT 68 80 68 79 / 0 0 0 0 PQL 65 82 65 82 / 0 0 0 0
LIX WATCHES/WARNINGS/ADVISORIES
LA...None.
GM...None.
MS...None.
GM...None.
Area Forecast Discussion National Weather Service New Orleans LA 1147 PM CDT Fri Apr 18 2025
New AVIATION
SHORT TERM
(This evening through Saturday night)
Issued at 230 PM CDT Fri Apr 18 2025
Upper ridging over the northern Gulf Coast states and Gulf. Upper troughing extends from western Ontario to southern California, with another ridge over the Pacific Northwest. At the surface, high pressure was off the Carolina coast, and over the Canadian Rockies. Low pressure was over Wisconsin with a cold front to the Texas Panhandle. This was producing low level southerly flow across the area. Away from immediate coastal areas (upper 70s), temperatures were in the lower and middle 80s with dew points in the 60s under partly to mostly sunny skies.
The upper ridging will progress eastward to the Georgia coast by Sunday morning with the southern portion of the upper trough extending from the Dakotas to New Mexico at that time.
Precipitable water values won't change much through Saturday night, remaining around 1 inch, with most of that below 900 mb.
That may produce a bit more cloud cover, especially during the late night and morning hours, but no significant precipitation is expected. NBM temperature guidance is pretty close to the GFS/ECMWF numbers, and is accepted. We'll be above normal for mid to late April, but with a fair amount of wind, it won't be oppressive for outdoor activities.
Current forecast sustained winds will generally be in the 15 to 20 mph range for Saturday with some gusts to close to 30 mph. That will be short of our advisory criteria. While we are in a prolonged period of southerly winds, current guidance indicates water levels should be short of what would cause coastal flooding issues.
LONG TERM
(Sunday through Thursday night)
Issued at 230 PM CDT Fri Apr 18 2025
Upper ridging off the Georgia and Florida coasts will remain in place early next week, although the axis will re-orient more northeast-southwest. The southern end of the trough over New Mexico will lift northeastward to the western Great Lakes by Monday night with the mid level flow across the local area becoming more zonal or at least west-southwesterly for much of the workweek next week. We won't have an actual frontal passage across the area during the long term portion of the forecast, but conditions are likely to be somewhat more favorable for the development of showers and thunderstorms. This would be mainly during the afternoon and evening hours from Monday into midweek.
Shear profiles are rather lacking on forecast soundings across the area, so at this time, severe weather doesn't appear to be a major threat locally, with the main concern to our northwest and north, generally north of Interstate 20. Similarly, forecast moisture levels are expected to be from the 50th to 75th percentile at best, climatologically, so any heavy rain concerns will also be north and west of the area.
Little day to day change in temperatures, both highs and lows, with no need to make significant changes to NBM values.
AVIATION
(06Z TAFS)
Issued at 1145 PM CDT Fri Apr 18 2025
MVFR to VFR conditions will prevail for most of the forecast period. There could be brief dips into IFR for both ceilings and vis (some patchy fog is possible in the early morning hours through sunrise or so). Winds will continue to be southerly gusting up to 20 to 25 knots during the day. -BL
MARINE
Issued at 230 PM CDT Fri Apr 18 2025
Expect several periods where winds in marine areas could approach 20 knots over the next couple of days, especially over the western waters. However, no indications of any prolonged periods where wind conditions would justify a Small Craft Advisory. With a prolonged persistent southerly fetch, seas may necessitate advisories by about Sunday over the open waters. That would be most likely over the western open waters. Will continue to monitor over the next day or so.
PRELIMINARY POINT TEMPS/POPS
MCB 66 85 67 84 / 0 0 0 10 BTR 69 86 70 86 / 0 0 0 10 ASD 68 83 68 83 / 0 0 0 10 MSY 71 84 71 83 / 0 0 0 10 GPT 68 80 68 79 / 0 0 0 0 PQL 65 82 65 82 / 0 0 0 0
LIX WATCHES/WARNINGS/ADVISORIES
LA...None.
GM...None.
MS...None.
GM...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| NWCL1 - 8761927 - New Canal, LA | 24 mi | 45 min | SSE 5.1G | 74°F | 30.13 | |||
| WYCM6 - 8747437 - Bay Waveland Yacht Club, MS | 25 mi | 45 min | SE 14G | 81°F | 74°F | 30.12 | ||
| SHBL1 - 8761305 - Shell Beach, LA | 28 mi | 45 min | ESE 12G | 73°F | 67°F | 30.14 | ||
| CARL1 | 30 mi | 45 min | 65°F | |||||
| BYGL1 - 8762482 - Bayou Gauche, LA | 47 mi | 45 min | 74°F | 76°F | 30.12 |
Wind History for New Canal Station, LA
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KASD
Terminal Aerodrome Forecast (TAF) for KASD
Wind History Graph: ASD
(wind in knots)
GEOS Local Image of Southern Mississippi Valley
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New Orleans/Baton Rouge, LA,
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