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Marine Weather and Tide Forecast for Chalmette, LA

February 18, 2025 8:13 PM CST (02:13 UTC) Change Location
Sunrise 6:35 AM   Sunset 5:52 PM
Moonrise 12:00 AM   Moonset 10:38 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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GMZ534 Lake Borgne- 334 Pm Cst Tue Feb 18 2025

.small craft exercise caution in effect until 3 am cst Wednesday - .

.small craft advisory in effect from 3 am cst Wednesday through Wednesday evening - .

Tonight - East winds around 15 knots with gusts up to 25 knots. Waves 2 to 4 feet. Showers. A chance of Thunderstorms after midnight, then a slight chance of Thunderstorms late.

Wednesday - Northeast winds around 20 knots, becoming north 20 to 25 knots in the afternoon. Waves 3 to 4 feet. Showers likely with a chance of Thunderstorms in the morning.

Wednesday night - North winds 20 to 25 knots with gusts up to 30 knots. Waves around 4 feet.

Thursday - North winds 20 to 25 knots, diminishing to around 15 knots in the afternoon. Waves 3 to 4 feet.

Thursday night - Northeast winds 15 to 20 knots with gusts up to 25 knots. Waves 3 to 4 feet.

Friday - Northeast winds 15 to 20 knots with gusts up to 25 knots, diminishing to 5 to 10 knots in the afternoon. Waves 2 to 4 feet.

Friday night - Northeast winds 5 to 10 knots. Waves 1 foot or less, then around 2 feet after midnight.

Saturday - Northeast winds 5 to 10 knots. Waves around 2 feet in the morning, then 1 foot or less.

Saturday night - Northeast winds 5 to 10 knots. Waves 1 foot or less, then around 2 feet after midnight. A chance of showers.

Sunday - Northeast winds 5 to 10 knots. Waves around 2 feet in the morning, then 1 foot or less. A chance of showers, mainly in the morning.

Sunday night - Northwest winds 5 to 10 knots. Waves 1 foot or less.
winds and waves higher in and near Thunderstorms.
GMZ500 334 Pm Cst Tue Feb 18 2025

Synopsis for pascagoula to atchafalaya river out 60 nm -
winds and waves are expected to become hazardous again across much of the waters overnight, continuing into Friday before conditions improve. Gales will be possible Wednesday over at least the western waters, and a gale warning has been raised for areas west of the mississippi river.

7 Day Forecast for Marine Location Near Chalmette, LA
   
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Tide / Current for Paris Road Bridge, Mississippi River Delta, Louisiana
  
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Paris Road Bridge
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Tue -- 05:44 AM CST     -0.02 feet Low Tide
Tue -- 06:36 AM CST     Sunrise
Tue -- 09:38 AM CST     Moonset
Tue -- 05:51 PM CST     Sunset
Tue -- 06:56 PM CST     0.66 feet High Tide
Tue -- 11:33 PM CST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
        
Sorry tide depth graphs only, please select another station.

Paris Road Bridge, Mississippi River Delta, Louisiana, Tide feet
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Tide / Current for Shell Beach, Lake Borgne, Louisiana
  
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Shell Beach
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Tue -- 04:46 AM CST     -0.02 feet Low Tide
Tue -- 06:35 AM CST     Sunrise
Tue -- 09:38 AM CST     Moonset
Tue -- 05:50 PM CST     Sunset
Tue -- 06:09 PM CST     0.77 feet High Tide
Tue -- 11:31 PM CST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
        
Sorry tide depth graphs only, please select another station.

Shell Beach, Lake Borgne, Louisiana, Tide feet
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Area Discussion for New Orleans/Baton Rouge, LA
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FXUS64 KLIX 182330 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 530 PM CST Tue Feb 18 2025

New AVIATION

SHORT TERM
(This evening through Wednesday night)
Issued at 315 PM CST Tue Feb 18 2025

Southwesterly upper flow across the area this afternoon with shortwaves near the Four Corners region and over Montana. At the surface, the center of the high pressure (1052 mb) bringing the arctic airmass to the Mississippi River Valley was near the North Dakota border with Canada. Isentropic processes have already started with an area of rain just off the Louisiana coast with some embedded thunderstorms. Filtered sunshine had allowed temperatures to warm into the lower and middle 60s across much of the area at 2 PM CST, with dew points gradually creeping up through the 40s with 60+ dew points remaining well offshore.

The Four Corners shortwave will move eastward to the Mississippi River by sunrise, and to the Appalachians by sunset. At present, it appears that the deeper moisture, as depicted by the 60+ dew points and southeasterly surface winds, will remain well offshore. Upper divergence and marginal instability, along with precipitable water values near or above the 90th percentile climatologically, will produce a band of moderate to heavy rainfall across perhaps the southern two thirds of the area.
Widespread 2 to 3 inch totals are expected from about the Interstate 10-12 corridors southward, with most falling between midnight and 6 am CST. All model forecast soundings, even over Plaquemines Parish at Boothville, do not indicate surface based convection developing, but embedded elevated convection will produce some rumbles of thunder and perhaps some hail. Rainfall has been somewhat limited over the last few weeks, so not planning on a Flood Watch. However, can't rule out a few isolated issues.

With the passage of the shortwave to the east, rain will end during the morning and very cold air will move into the area during the day. For much or all of the area, high temperatures for the calendar day Wednesday could be the midnight reading tonight, with falling temperatures during the day. Overnight lows Wednesday night will fall into the 20s across most of the area, with wind chill values in the teens and 20s...at best. Cold Weather Advisories will likely be necessary late tomorrow night and Thursday morning. Those will likely get issued at some point tomorrow morning.

LONG TERM
(Thursday through Monday night)
Issued at 315 PM CST Tue Feb 18 2025

The axis of the arctic high pressure will finally move east of the area on Friday. Sunshine Thursday should allow high temperatures to recover into the 40s, but wouldn't be totally shocked if northern portions of the area struggle to get there. It will be downright cold for late February, as the highs in the 40s are 20-25 degrees below normal. Record lows will be threatened Friday morning before a moderating trend begins. We'll still need Cold Weather Advisories Thursday night/Friday morning, and potentially another freeze Friday night. Another shortwave moves across the Gulf Coast states Saturday night, but temperatures will be well above freezing, so no threat of wintry precipitation.

By Monday into Tuesday, temperatures will warm to above normal levels, and the cold weather will just be a memory...for now.

AVIATION
(00Z TAFS)
Issued at 525 PM CST Tue Feb 18 2025

Low VFR to MVFR conditions are ongoing but deterioration of both ceilings and visibilities are forecast soon into the overnight hours as we have a system bringing showers and storms from the coast northward and another line of storms from the west. Then generally IFR to MVFR conditions will prevail through the rest of the forecast cycle with dips into LIFR possible if storms impact a terminal. Confidence is highest with rain impacting terminals so used prevailing for that and PROB30s for the thunderstorms. These storms will then move out from west to east but low ceilings will remain through the end of the forecast cycle. -BL



MARINE
Issued at 315 PM CST Tue Feb 18 2025

Conditions are in the process of deteriorating across the western coastal waters with Small Craft Advisories going into effect.
These conditions will spread across the remaining waters overnight into Wednesday morning. Will upgrade the Gale Watch to a Warning for the western open waters, and can't rule out needing one eventually across the rest of the waters, at least for gale force gusts. Small Craft Advisories, at a minimum, are likely to be needed into at least Friday across portions of the waters before conditions improve significantly.

CLIMATE
Issued at 1148 AM CST Tue Feb 18 2025

With the expected arctic blast arriving tomorrow, here are the record low temperatures for Thursday through Saturday mornings at our local sites.

Record lows Thursday through Saturday...POR is period of record

Location (POR) Thursday Friday Saturday BTR (1892) 25/2021 25/1908 24/1978 MSY (1946) 26/1978 31/1978 26/1978 MCB (1948) 19/1978 21/1978 15/1978 GPT (1893) 27/2021 29/1898 23/1978 ASD (1994) 26/2021 31/2021 28/1999 PQL (1997) 24/2015 30/2021 23/1999

PRELIMINARY POINT TEMPS/POPS
MCB 38 46 21 41 / 100 30 0 0 BTR 43 50 26 45 / 100 10 0 0 ASD 48 54 26 48 / 100 50 0 0 MSY 50 55 31 46 / 100 40 0 0 GPT 48 54 28 47 / 100 70 0 0 PQL 48 57 28 49 / 100 80 0 0

LIX WATCHES/WARNINGS/ADVISORIES
LA...None.
GM...Small Craft Advisory from 3 AM to 8 PM CST Wednesday for GMZ530- 532-534-536-538-555-557-575-577.

Small Craft Advisory until 8 AM CST Wednesday for GMZ550-552-570- 572.

Gale Warning from 8 AM to 8 PM CST Wednesday for GMZ550-552-570- 572.

MS...None.
GM...Small Craft Advisory from 3 AM to 8 PM CST Wednesday for GMZ532- 534-536-538-555-557-575-577.

Small Craft Advisory until 8 AM CST Wednesday for GMZ552-570-572.

Gale Warning from 8 AM to 8 PM CST Wednesday for GMZ552-570-572.


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
NWCL1 - 8761927 - New Canal, LA 10 mi56 min 57°F
CARL1 12 mi56 min 49°F
SHBL1 - 8761305 - Shell Beach, LA 16 mi56 min 58°F 54°F
BYGL1 - 8762482 - Bayou Gauche, LA 30 mi56 min 55°F 62°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 39 mi62 min 62°F 58°F


Wind History for New Canal Station, LA
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Airport Reports
   
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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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