Thursday, July16, 2020
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Marine Weather and Tides
Bayou L'Ourse, 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 6:12AMSunset 8:05PM Thursday July 16, 2020 12:10 PM CDT (17:10 UTC) Moonrise 1:42AMMoonset 3:38PM Illumination 14% Phase: Waning Crescent; Moon at 26 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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GMZ455 Coastal Waters From Lower Atchafalaya River To Intracoastal City La Out 20 Nm- 1031 Am Cdt Thu Jul 16 2020
Rest of today..Southwest winds 5 to 10 knots. Seas 1 foot or less. Chance of showers and Thunderstorms.
Tonight..South winds 5 to 10 knots. Seas 1 foot or less. Chance of Thunderstorms in the evening. Slight chance of showers through the night. Slight chance of Thunderstorms after midnight.
Friday..Southeast winds 5 to 10 knots. Seas 1 foot or less. Slight chance of showers and Thunderstorms.
Friday night..Southeast winds 5 to 10 knots. Seas 1 foot or less.
Saturday..East winds 5 to 10 knots. Seas 1 foot or less. Slight chance of showers and Thunderstorms through the day.
Saturday night..Southeast winds 5 to 10 knots. Seas 1 foot or less. Slight chance of showers and Thunderstorms after midnight.
Sunday..East winds 5 to 10 knots. Seas 1 foot or less. Chance of showers and Thunderstorms in the morning, then slight chance of showers and Thunderstorms in the afternoon.
Sunday night..Southeast winds 5 to 10 knots. Seas 1 foot or less. Chance of showers and Thunderstorms after midnight.
Monday..East winds 5 to 10 knots. Seas 1 foot or less. Chance of showers and Thunderstorms.
Monday night..Southeast winds 5 to 10 knots. Seas 1 foot or less. Slight chance of showers and Thunderstorms in the evening, then chance of showers and Thunderstorms after midnight.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 1031 Am Cdt Thu Jul 16 2020
Synopsis.. A light to moderate southerly flow today will continue across the coastal waters. An upper level trough moving over the region will result in showers and Thunderstorms through tonight. Winds becoming southeasterly by the end of the week as high pressure becomes established across the southeast states. This will also continue the chance for showers and Thunderstorms in the coastal waters.


7 Day Forecast for Marine Location Near Bayou L'Ourse, LA
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location: 29.67, -91     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 160909 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 409 AM CDT Thu Jul 16 2020

SHORT TERM. Not much change in thinking as high precip numbers will remain for today. Along with PW values around 2", conditions will remain condusive for waterspouts and some wet microbursts. Some dry air will provide a lid on most activity Friday but it won't keep some sh/ts from developing. It will just take a few hours more of heating to accomplish this. This should provide a more normal distribution of activity during the day through Saturday.

LONG TERM. The start of next week will be the next indication of deep moisture moving into the area once again providing higher than normal numbers of sh/ts. With the dry air moving over the area in the mid levels, the chance of one or two downbursts will be around basically each day through the weekend at least.

AVIATION. VFR outside TSRA which should affect all terminals at some point today. TS activity will bring about IFR conditions rapidly for cigs and vis. Winds could be an issue as well with some of these.

MARINE. Higher winds and seas will be found in and around sh/ts. Overall winds will be onshore around 10kt with a few fluctuations to 15kt for a short time overnight. Conditions will also promote the possibility of waterspouts today but not as much Friday through Sunday. Then these conditions are back again by the start of the new week along with nocturnal sh/ts.

PRELIMINARY POINT TEMPS/POPS. MCB 91 74 91 74 / 80 0 20 10 BTR 93 75 93 75 / 80 10 40 0 ASD 91 74 93 75 / 90 10 20 0 MSY 90 77 92 78 / 100 10 20 0 GPT 88 76 89 76 / 80 0 10 0 PQL 90 72 93 73 / 80 0 20 0

LIX WATCHES/WARNINGS/ADVISORIES. LA . None. GM . None. MS . None. GM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AMRL1 - 8764227 - Amerada Pass, LA 23 mi71 min 86°F
EINL1 29 mi71 min 86°F
BYGL1 - 8762482 - Bayou Gauche, LA 32 mi71 min 86°F
CARL1 49 mi71 min 86°F

Wind History for Tesoro Marine Terminal, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Patterson Memorial, LA18 mi15 minNNE 610.00 miA Few Clouds89°F78°F70%1018.4 hPa
Houma-Terrebonne Airport, LA19 mi24 minSSE 12 G 162.00 miThunderstorm Light Rain81°F75°F84%1018.6 hPa

Link to 5 minute data for KPTN

Wind History from PTN (wind in knots)
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S3CalmCalmCalmCalmCalmCalmCalmN4NE3N8N7N6
1 day agoW9SW9SW9SW8SW9SW8S7SW6SW4CalmCalmCalmSW3CalmS3CalmCalmCalmCalmCalmSW3SW7SW10SW6
2 days agoW7W11W8W12W10SW9SW9W9
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Tide / Current Tables for Shell Island, Louisiana
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Shell Island
Click for Map
Thu -- 02:43 AM CDT     Moonrise
Thu -- 05:14 AM CDT     1.36 feet High Tide
Thu -- 06:16 AM CDT     Sunrise
Thu -- 04:39 PM CDT     Moonset
Thu -- 07:29 PM CDT     -0.16 feet Low Tide
Thu -- 08:06 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.91.11.31.31.41.31.31.31.31.31.31.21.210.80.50.2-0-0.1-0.1-0.10.10.3

Tide / Current Tables for Eugene Island, Louisiana
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Eugene Island
Click for Map
Thu -- 02:43 AM CDT     Moonrise
Thu -- 03:55 AM CDT     1.78 feet High Tide
Thu -- 06:16 AM CDT     Sunrise
Thu -- 04:39 PM CDT     Moonset
Thu -- 06:05 PM CDT     -0.20 feet Low Tide
Thu -- 08:06 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.51.71.81.81.81.71.71.71.71.61.61.51.30.90.50.2-0.1-0.2-0.2-00.20.50.8

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 (13,3,4,5)
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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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Disclaimer:
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.