Wednesday, January22, 2020
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Marine Weather and Tides
Arabi, LA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:53AMSunset 5:29PM Wednesday January 22, 2020 6:23 PM CST (00:23 UTC) Moonrise 5:07AMMoonset 3:34PM Illumination 5% Phase: Waning Crescent; Moon at 27 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- 258 Pm Cst Wed Jan 22 2020
Tonight..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers in the late evening and overnight.
Thursday..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Showers likely in the morning, then showers in the afternoon.
Thursday night..South winds 5 to 10 knots becoming northwest 10 to 15 knots in the late evening. Waves 1 foot or less. Dominant period 4 seconds. Waves building to 1 to 3 feet after midnight. Dominant period 4 seconds after midnight. Slight chance of showers in the evening.
Friday..Northwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday night..Northwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Saturday..North winds 5 to 10 knots becoming west late in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Saturday night..South winds near 5 knots becoming southeast after midnight. Waves less than 1 foot. Dominant period 4 seconds. Chance of showers after midnight.
Sunday..East winds 5 to 10 knots. Waves 1 to 2 feet. Chance of showers.
Sunday night..Northeast winds 5 to 10 knots. Waves 1 foot or less. Slight chance of showers in the evening.
Monday..East winds 5 to 10 knots. Waves 1 foot or less.
Monday night..East winds 5 to 10 knots. Waves 1 foot or less.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 258 Pm Cst Wed Jan 22 2020
Synopsis..A low pressure system will push through the area tomorrow. High pressure is expected to build in on Friday and remain in place through Saturday. Another low pressure system should push through the gulf of mexico on Sunday and Monday.


7 Day Forecast for Marine Location Near Arabi, LA
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location: 30.03, -90.03     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 222150 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 350 PM CST Wed Jan 22 2020

SHORT TERM. No significant changes from the previous forecast package. A progressive weather pattern will remain in place across the Gulf South. A fast moving shortwave trough axis currently moving through Texas will continue to approach the region tonight and push through the area tomorrow into tomorrow night. A surface low reflection of the upper level trough will pass directly across the forecast area during the day tomorrow. Ample forcing along with an increasingly deeper pool of moisture will bring higher rain chances to the area by later tonight. The rain chances will be highest across the western third of the forecast area tonight and then spread east across the region through the day tomorrow.

The trough axis and low pressure system will push east of the area by tomorrow night, and a surge of strong negative vorticity advection and related subsidence will overspread the area. Rain chances will quickly come to an end through the evening hours as a drier airmass moves in from the west, and fully expect to see mostly clear skies and dry weather in place by Friday morning. The airmass moving into the area will be Pacific based, so little in the way of cold air advection is expected. As a result, temperatures will be near average both tomorrow and Friday.

LONG TERM. The same high pressure system over the region on Friday and will remain in place through Saturday with dry weather and near average temperatures expected. Some high cloudiness may begin to spread in during the afternoon hours as a another storm system approaches from the west. This next upper level trough axis will be weaker, and the strong forcing and highest theta e values will be over the Gulf of Mexico, but a period of light rain showers and overcast skies can be expected late Saturday night through Sunday. The highest POP values will generally be along and south of the I-10 corridor where the greatest lift and higher available moisture content is expected. Temperatures should remain near average, but readings may be a few degrees cooler on Sunday due to the cloud cover and rainfall in the region. Highs should be near 60 degrees and lows should cool into the upper 40s and lower 50s.

A ridge of high pressure will build in behind this system on MOnday and remain in place through Tuesday. This airmass will also be Pacific based, and near normal temperatures will persist. Strong subsidence throughout the column will keep mostly clear skies and lower humidity values in place through Tuesday evening. Another trough of low pressure will begin to approach the area Tuesday night into Wednesday, and increasing cloud cover and rain chances are expected for the middle of the week. This system may have some more instability to work with, and have included a mention of thunderstorms in the forecast for Wednesday.

AVIATION. VFR conditions will persist through the overnight hours for the majority of the terminals. There will be mid and high level clouds through the night. A band of light to moderate rain is expected to move across the terminals after 12z tomorrow, and this will lead to lower ceilings and reduced visibilities from 12z through 18z. Expect to see prevailing IFR conditions with ceilings from 500 to 1000 feet and visibilities of around 3 miles through the afternoon hours tomorrow. Some improvement in conditions is expected to occur after 00z at KMSY as drier air begins to advect in from the west.

MARINE. An increasing pressure gradient over the Gulf waters will result in a period of onshore flow of 15 to 25 knots tonight into tomorrow. Small craft advisories are now in effect for the western waters west of Port Fourchon through tomorrow afternoon. Winds will shift to the northwest at 15 to 20 knots tomorrow night and persist through Friday. Seas of 3 to 6 feet can be expected from tomorrow through Friday. High pressure will briefly settle over the waters on Saturday with lighter winds and calmer seas expected. However, a strengthening low pressure passing through the central Gulf of Mexico Sunday into Sunday night should bring another round of 15 to 20 knot easterly winds to the outer Gulf waters. High pressure should settle back over the waters by Monday, and this will allow for a relaxation of the wind field back to around 10 knots.

DECISION SUPPORT.

DSS code: Blue. Deployed: None. Activation: None. Activities: Forecast support for Stennis. Small craft advisory. River flood warnings. Decision Support Services (DSS) Code Legend Green = No weather impacts that require action. Blue = Long-fused watch, warning, or advisory in effect or high visibility event; Marginal risk severe or excessive rain. Yellow = Heightened impacts with short-fused watch, warning or advisory issuances; radar support for slight risk severe or excessive rain. Orange = High Impacts; Enhanced risk severe; nearby tropical events; HazMat or other large episodes. Red = Full engagement for Moderate to high risk of severe and/or excessive rainfall, or direct tropical threats; Events of National Significance.

PRELIMINARY POINT TEMPS/POPS. MCB 42 60 44 59 / 70 90 20 0 BTR 46 65 44 62 / 70 90 10 0 ASD 44 63 46 61 / 40 90 30 0 MSY 50 65 49 61 / 40 90 20 0 GPT 44 60 47 59 / 30 90 40 0 PQL 42 61 48 62 / 30 90 50 0

LIX WATCHES/WARNINGS/ADVISORIES. LA . None. GM . Small Craft Advisory from midnight tonight to 3 PM CST Thursday for GMZ550-570.

MS . None. GM . Small Craft Advisory from midnight tonight to 3 PM CST Thursday for GMZ570.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWCL1 - 8761927 - New Canal, LA 4 mi54 min ESE 1 G 7 56°F1020.6 hPa
CARL1 9 mi54 min 50°F
FREL1 21 mi54 min ESE 11 G 13 49°F 1020.4 hPa
SHBL1 - 8761305 - Shell Beach, LA 22 mi54 min E 12 G 15 48°F 53°F1022.2 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 27 mi54 min E 5.1 G 8.9 53°F1021.5 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 43 mi54 min ESE 6 G 8 48°F 51°F1022.6 hPa

Wind History for New Canal Station, LA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans, New Orleans Lakefront Airport, LA1 mi31 minESE 1110.00 miFair49°F41°F74%1021.1 hPa
New Orleans, New Orleans International Airport, LA12 mi31 minE 1010.00 miOvercast50°F41°F71%1021.3 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA14 mi89 minE 810.00 miOvercast49°F42°F77%1021.7 hPa

Link to 5 minute data for KNEW

Wind History from NEW (wind in knots)
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Last 24hrNE15NE16NE14E17E18E13E17E10E11E16E13E13E9NE9NE11E9E9E9E10E10E7E8E13E11
1 day agoN17N19N21N18N18N17N16N13N17N22N17NE12NE11N13N13N12N9N9N11N8N11N11N12NE13
2 days agoN23
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Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Paris Road Bridge
Click for Map
Wed -- 12:27 AM CST     1.11 feet High Tide
Wed -- 05:06 AM CST     Moonrise
Wed -- 06:54 AM CST     Sunrise
Wed -- 12:49 PM CST     -0.61 feet Low Tide
Wed -- 03:33 PM CST     Moonset
Wed -- 05:27 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.110.90.80.60.30.1-0.1-0.3-0.4-0.5-0.6-0.6-0.6-0.5-0.4-0.2-00.20.40.60.80.9

Tide / Current Tables for Shell Beach, Lake Borgne, Louisiana
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Shell Beach
Click for Map
Wed -- 05:04 AM CST     Moonrise
Wed -- 06:53 AM CST     Sunrise
Wed -- 11:51 AM CST     -0.72 feet Low Tide
Wed -- 03:33 PM CST     Moonset
Wed -- 05:27 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.21.10.90.70.40.2-0.1-0.3-0.5-0.6-0.7-0.7-0.7-0.6-0.4-0.3-0.10.20.40.60.91.11.2

Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (19,4,5,8)
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Ground Weather Radar Station New Orleans/Baton Rouge, LA
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weather_mapweather_map weather_map

Gulf Stream Current


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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.