Saturday, July24, 2021
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Marine Weather and Tides
Gretna, LA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:13AMSunset 7:59PM Saturday July 24, 2021 4:22 PM CDT (21:22 UTC) Moonrise 7:56PMMoonset 5:36AM Illumination 100% Phase: Full Moon; Moon at 15 days in cycle
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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GMZ530 Lake Pontchartrain And Lake Maurepas- 332 Pm Cdt Sat Jul 24 2021
Tonight..North winds 5 to 10 knots becoming west in the late evening and early morning, then becoming northwest after midnight. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms in the evening.
Sunday..Northwest winds 5 to 10 knots becoming southwest early in the afternoon, then becoming east 10 to 15 knots late in the afternoon. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms in the late morning and afternoon.
Sunday night..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms early in the evening.
Monday..South winds near 5 knots becoming southeast in the late morning and afternoon. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers in the late morning and afternoon. Chance of Thunderstorms in the afternoon.
Monday night..South winds 5 to 10 knots becoming northwest after midnight. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers and Thunderstorms in the evening.
Tuesday..North winds near 5 knots becoming southeast in the afternoon. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Tuesday night..Southwest winds 5 to 10 knots becoming west after midnight. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms in the evening.
Wednesday..North winds near 5 knots becoming east in the late morning and afternoon. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Wednesday night..South winds 5 to 10 knots becoming west after midnight. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Thursday..North winds near 5 knots becoming northeast late in the morning, then becoming southeast in the afternoon. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Thursday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 332 Pm Cdt Sat Jul 24 2021
Synopsis..High pressure will remain centered over the southern plains. A weak frontal boundary will move toward the gulf coast and the coastal waters on Tuesday. The front should then stall along the coast and over the waters for the remainder of next week.


7 Day Forecast for Marine Location Near Gretna, LA
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location: 29.95, -90.07     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 242013 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 313 PM CDT Sat Jul 24 2021

SHORT TERM (Tonight through Monday Night). A weak upper level vort lobe rotating around a broad upper level ridge dominating the Southern Plains will slowly push to the south and west across the forecast area through Monday. This upper level vort lobe will bring slightly higher omega values and overall upper level lift to the area, and support increased convective chances each day. The convection will be entirely diurnal with convective activity peaking over land in the late afternoon and early evening hours when the convective temperature is surpassed and overall instability is maximized. Some drier air in the mid-levels will be supportive of gusty winds from the deepest convection, but conditions are not supportive of severe thunderstorm development through Monday. Temperatures will be near to slightly warmer than average through the period with highs in the low to mid 90s and lows in the mid to upper 70s. A few locations will likely only cool into the upper 80s. Dewpoints will remain fairly high in the mid to upper 70s, and this will allow for heat index values to average around 105 to 110 degrees from late morning through the afternoon hours both Sunday and Monday. A pre-emptive heat advisory will be issued for portions of the area tomorrow with a focus on the Northshore and the River Parishes.

LONG TERM (Tuesday through Friday Night). The prevailing deep layer northerly flow pattern in the mid and upper levels will persist through the end of the week, and a trough axis deepening over the eastern seaboard will drive a weak backdoor front into the area on Tuesday. This front should stall along the Gulf coast on Wednesday and then slowly dissipate through the remainder of the forecast period. As this boundary moves into the area, accompanying deeper moisture will also advect in from the north and push precipitable water values into the 2.25 to 2.5 inch range. These values are well above the average of around 2 inches this time of year, and will support greater convective activity and overall convective coverage from Wednesday through Friday. The convection will remain largely diurnal with convection peaking over land in the afternoon hours and peaking over the offshore waters during the late overnight and early morning hours. Temperatures will be near average with highs in the low to mid 90s and lows in the 70s through the period. Heat index values of around 105 degrees can be expected each day before convection develops and begins to cool temperatures down.

AVIATION. The 00z TAF package will likely show prevailing VFR conditions at all of the terminals for much of the period. Some widely scattered convection could produce brief periods of IFR visibilities if storms move directly over a terminal, and the peak period for these higher convective chances will be after 18z tomorrow.

MARINE. Very benign conditions are expected across the coastal waters through next week. Light winds of 10 knots or less and seas of 3 feet or less are forecast through the period. Scattered thunderstorm activity each day will be the primary concern. These storms could produce brief periods of gusty winds, choppy seas, and possibly a few waterspouts.

PRELIMINARY POINT TEMPS/POPS. MCB 75 94 75 93 / 30 50 30 50 BTR 76 95 77 95 / 20 50 30 60 ASD 77 94 76 94 / 30 50 30 40 MSY 79 93 79 93 / 30 50 30 40 GPT 78 90 77 91 / 30 40 20 30 PQL 76 92 75 93 / 30 30 20 30

LIX WATCHES/WARNINGS/ADVISORIES. LA . Heat Advisory until 6 PM CDT this evening for LAZ034>037-046>050- 056>059-065.

Heat Advisory from 10 AM to 7 PM CDT Sunday for LAZ034>037-039- 046>050-056>059-065-071-072-075-076.

GM . None. MS . Heat Advisory until 6 PM CDT this evening for MSZ068-069.

Heat Advisory from 10 AM to 7 PM CDT Sunday for MSZ068>071-077.

GM . None.

PG


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CARL1 4 mi52 min 85°F
NWCL1 - 8761927 - New Canal, LA 6 mi52 min W 1 G 2.9 92°F 88°F1016.1 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 22 mi52 min Calm G 4.1 95°F 90°F1017.1 hPa
FREL1 22 mi52 min N 4.1 G 6 92°F 1015.8 hPa
SHBL1 - 8761305 - Shell Beach, LA 22 mi52 min Calm G 1 92°F 90°F1017.1 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 47 mi52 min S 8.9 G 14 90°F 89°F
GISL1 - 8761724 - Grand Isle, LA 48 mi52 min 2.9 G 5.1 90°F 87°F1017.5 hPa

Wind History for New Canal Station, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans, New Orleans Lakefront Airport, LA7 mi29 minW 510.00 miThunderstorm in Vicinity93°F79°F64%1016.3 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA9 mi27 minNE 310.00 miMostly Cloudy93°F78°F62%1016.5 hPa
New Orleans, New Orleans International Airport, LA10 mi29 minN 410.00 miA Few Clouds97°F74°F48%1017 hPa

Link to 5 minute data for KNEW

Wind History from NEW (wind in knots)
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Last 24hrW8W6W5W10W14W15W14W10W9W12W13NW13NW14NW15NW16NW17NW16N12N11NW8NW8W6W5W5
1 day agoN3--CalmSE5S4W11SW6W11W11W11W7SW8W13W13NW13NW11NW10NW12NW11NW8NW7NW6W5W6
2 days agoE5NE5SW11SW14SW10SW9SW6SW6SW6SW5SW5SW5SW6SW5SW7W8W8NW8NW7NW7NW7N7NW8NW7

Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
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Paris Road Bridge
Click for Map
Sat -- 03:23 AM CDT     -0.30 feet Low Tide
Sat -- 06:14 AM CDT     Sunrise
Sat -- 06:34 AM CDT     Moonset
Sat -- 03:47 PM CDT     1.67 feet High Tide
Sat -- 07:57 PM CDT     Sunset
Sat -- 08:55 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0-0.2-0.3-0.3-0.3-0.2-0.100.20.40.70.91.21.41.51.61.71.61.51.31.10.90.70.4

Tide / Current Tables for Shell Beach, Lake Borgne, Louisiana
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Shell Beach
Click for Map
Sat -- 02:25 AM CDT     -0.35 feet Low Tide
Sat -- 06:13 AM CDT     Sunrise
Sat -- 06:33 AM CDT     Moonset
Sat -- 03:00 PM CDT     1.96 feet High Tide
Sat -- 07:56 PM CDT     Sunset
Sat -- 08:53 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.3-0.3-0.3-0.3-0.100.30.50.811.31.61.81.921.91.81.61.41.10.80.50.3

Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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