Friday, September25, 2020
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Marine Weather and Tides
Morgan City, LA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:52AMSunset 6:56PM Friday September 25, 2020 8:27 AM CDT (13:27 UTC) Moonrise 2:32PMMoonset 12:01AM Illumination 58% Phase: Waxing Gibbous; Moon at 8 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- 345 Am Cdt Fri Sep 25 2020
Today..Northeast winds 5 to 10 knots. Seas 1 foot or less.
Tonight..East winds 5 to 10 knots. Seas 1 foot or less.
Saturday..Southeast winds up to 5 knots. Seas 1 foot or less.
Saturday night..South winds 5 to 10 knots. Seas 1 foot or less.
Sunday..Southwest winds 5 to 10 knots. Seas 1 foot or less.
Sunday night..South winds 5 to 10 knots. Seas 1 foot or less. Slight chance of showers and Thunderstorms.
Monday..Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Chance of showers and Thunderstorms.
Monday night..North winds 15 to 20 knots. Seas 2 to 4 feet. Chance of showers and Thunderstorms.
Tuesday..North winds 15 to 20 knots. Seas 2 to 4 feet. Slight chance of showers and Thunderstorms.
Tuesday night..North winds 10 to 15 knots. Seas 2 to 4 feet.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 345 Am Cdt Fri Sep 25 2020
Synopsis.. A light and variable surface flow will prevail as weak high pressure crosses the area. The winds will become more southerly Saturday night into Sunday as the high moves east of the area. A fairly strong cold front will then move through the area late Monday resulting in moderate to strong northerly winds and elevated seas Monday night and Tuesday.


7 Day Forecast for Marine Location Near Morgan City, LA
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location: 29.67, -91.2     debug


Area Discussion for - Lake Charles, LA
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FXUS64 KLCH 251129 AFDLCH

Area Forecast Discussion National Weather Service Lake Charles LA 629 AM CDT Fri Sep 25 2020

DISCUSSION. For the 25/12Z TAF Issuance.

AVIATION. Upper level trough is located from the Lower Mississippi Valley across the forecast area then into east Texas. Dry air has filtered in behind the trough in the mid and upper levels. Some moisture remains trapped underneath an inversion, and this is keeping some low clouds in with IFR/MVFR conditions due to ceilings. These ceilings will gradually lift by afternoon with VFR conditions expected as dry air from northerly winds erode away the trapped low level moisture. VFR conditions are then expected to persist through the evening into the overnight.

Rua

PREV DISCUSSION. /issued Issued by National Weather Service Brownsville TX/

SYNOPSIS . The elongated 500 mb troffing will prevail over the lower Miss River Valley today with the southern end of the trough axis closing off later this evening over SE TX. The northern end of the trough will push out eastward towards the Mid Atlantic States. The closed 500 mb low over SE TX will drift E-NE moving over the lower Miss River Valley by late Sat/early Sun. Although this closed 500 mb low will move over E TX and SW LA this weekend, a pretty dry airmass will persist over the region keeping the pcpn chcs pretty low. A series of strong Canadian short waves will then dig across the Midwest carving out a pretty large trough axis over the central States. This increased troffing will push a substantial cold front down into the lower Miss River Valley late Mon providing Far E TX/SW LA a quick window of opportunity for some conv at the start of next week.

Up through next Mon, the GFS and ECMWF models are in pretty good agreement in the overall 500 mb pattern ahead of the fropa. After Mon, the longer range models diverge on the 500 mb pattern with the ECMWF pushing a closed 500 mb low over the ARK/LA/TEX region throughout much of next week with the closed low eventually lifting out next Wed and Thurs. Meanwhile, the GFS does not reflect any closed low and keeps the trough open throughout the forecast period. Despite these differences in the 500 mb pattern over the region, both models tend to reflect a pretty decent cool down next week. The ECMWF reflects a little stronger CAA versus the GFS after the Mon fropa mainly due to the influence of the 500 mb closed low indicated by the ECMWF. Drier air filtering into the region after the Mon fropa will keep the conv chcs down near zero through Thurs.

MARINE . A pretty weak PGF early in the CWF period will maintain light winds and low seas throughout today and into this weekend. The anticipated fropa late Mon will allow for a stronger PGF to build over the region potentially resulting in SCA conditions across portions of or all of the Far East TX/SW LA Mon Night into Tues.

PRELIMINARY POINT TEMPS/POPS. AEX 81 62 85 65 / 0 0 10 0 LCH 82 67 84 69 / 0 0 10 0 LFT 82 66 86 69 / 0 0 10 0 BPT 84 66 85 67 / 0 0 10 0

LCH WATCHES/WARNINGS/ADVISORIES. LA . None. TX . None. GM . None.

AVIATION . 07


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 2 mi58 min ENE 4.1 G 5.1
AMRL1 - 8764227 - Amerada Pass, LA 17 mi58 min E 4.1 G 5.1 71°F 79°F1014.8 hPa
EINL1 23 mi58 min ESE 6 G 7 72°F 79°F1014.6 hPa70°F
BYGL1 - 8762482 - Bayou Gauche, LA 42 mi58 min NE 1.9 G 5.1 70°F 76°F1014.9 hPa

Wind History for Tesoro Marine Terminal, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Patterson Memorial, LA8 mi32 minENE 310.00 miOvercast70°F69°F97%1015.4 hPa
Salt Point, LA19 mi29 minN 0 mi70°F69°F97%1014.5 hPa

Link to 5 minute data for KPTN

Wind History from PTN (wind in knots)
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Last 24hrW7W8NW8NW7W6W8W4W5W6N5NW3N3N4N3NW3N4N4N5N4CalmN3CalmN3NE3
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Tide / Current Tables for Shell Island, Louisiana
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Shell Island
Click for Map
Fri -- 01:02 AM CDT     Moonset
Fri -- 03:43 AM CDT     2.01 feet High Tide
Fri -- 06:55 AM CDT     Sunrise
Fri -- 03:31 PM CDT     Moonrise
Fri -- 05:57 PM CDT     0.11 feet Low Tide
Fri -- 06:57 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.81.92221.91.81.71.71.61.61.41.20.90.60.30.20.10.20.30.50.81.1

Tide / Current Tables for Point Chevreuil, Louisiana
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Point Chevreuil
Click for Map
Fri -- 01:03 AM CDT     Moonset
Fri -- 03:51 AM CDT     2.01 feet High Tide
Fri -- 06:56 AM CDT     Sunrise
Fri -- 03:33 PM CDT     Moonrise
Fri -- 05:42 PM CDT     0.11 feet Low Tide
Fri -- 06:58 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.81.92221.91.81.71.71.61.51.41.20.90.60.30.10.10.20.30.50.81.1

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
Ground Weather Radar Station New Orleans/Baton Rouge, LA
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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.