Saturday, February27, 2021
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L-36.com

Marine Weather and Tides
Berwick, LA

Version 3.4
NOTICE
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 6:28AMSunset 6:02PM Saturday February 27, 2021 3:33 AM CST (09:33 UTC) Moonrise 6:39PMMoonset 7:02AM 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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GMZ435 Vermilion Bay- 948 Pm Cst Fri Feb 26 2021
.dense fog advisory in effect until noon cst Saturday...
Rest of tonight..South winds 5 to 10 knots. Bay waters a light chop. Patchy fog late in the evening, then areas of fog after midnight.
Saturday..Southeast winds 5 to 10 knots. Bay waters a light chop. Patchy fog in the morning.
Saturday night..Southeast winds around 10 knots. Bay waters a light chop.
Sunday..South winds around 10 knots. Bay waters a light chop.
Sunday night..South winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers after midnight.
Monday..East winds 5 to 10 knots. Bay waters a light chop. Chance of showers through the day. Slight chance of Thunderstorms in the afternoon.
Monday night..East winds 5 to 10 knots. Bay waters a light chop. Chance of rain showers.
Tuesday..Southeast winds 5 to 10 knots. Bay waters a light chop. Chance of rain showers.
Tuesday night..South winds 5 to 10 knots becoming north after midnight. Bay waters a light chop. Slight chance of rain showers in the evening.
Wednesday..North winds 5 to 10 knots. Bay waters a light chop.
Wednesday night..Northeast winds around 5 knots. Bay waters smooth. Slight chance of rain showers after midnight.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 948 Pm Cst Fri Feb 26 2021
Synopsis.. A light to at times modest onshore flow will continue through the weekend. Areas of dense marine fog formation will be likely once again tonight as the moist southerly flow passes atop the cooler shelf waters.


7 Day Forecast for Marine Location Near Berwick, LA
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location: 29.74, -91.23     debug


Area Discussion for - Lake Charles, LA
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FXUS64 KLCH 270537 AFDLCH

Area Forecast Discussion National Weather Service Lake Charles LA 1137 PM CST Fri Feb 26 2021

DISCUSSION. For 02/27/2021 06Z TAF Issuance

AVIATION. With the exception of AEX, CIGS have continued to lower this evening. Expect a mix of IFR/LIFR CIGS overnight. VIS once again has been a little more reluctant to drop, but starting to see some minor reductions from I-10 southward. Guidance suggests BPT/LCH have the best shot at more significant reductions prior to sunrise, though LFT/ARA can't be ruled out. In any case, the very saturated lower levels of the atmosphere result in sluggish improvement after sunrise tomorrow, with IFR/MVFR CIGS likely remaining throughout the day. CIGS begin to lower once more following sunset tomorrow, with guidance once again suggesting some lowering VIS will be possible through the overnight hours, primarily at the southern terminals.

50

PREV DISCUSSION. /issued 1018 PM CST Fri Feb 26 2021/

DISCUSSION . Wx map shows warm and humid airmass over the region, with temperatures still in the upper 60s to near 70 at this hour, and dewpoints not far behind. Available guidance and persistence shows areas of dense fog likely to expand across the coastal waters overnight, thus leaving the dense fog advisory for all lakes/bays and coastal waters out 60nm. Areas of dense fog may penetrate somewhat inland just beyond the immediate coast, but the latest guidance holds the winds up around 10-15 mph here, as well as around 5-10 mph further inland until diminishing briefly around daybreak. Thus, not extending the dense fog advisory for the coastal zones at this time. Overnight lows not expected to fall lower than the lower to mid 60s, with near 60 across the coast due to the cooler shelf waters.

DML

PREV DISCUSSION . /issued 314 PM CST Fri Feb 26 2021/

DISCUSSION . High pressure is centered near the mid Atlantic coast this afternoon with a frontal boundary stalled from South Texas through central Mississippi and Alabama. The local area remains south of the front with a flow off the gulf. A warm and moist air mass continues to be pushed across the cooler gulf shelf waters between the front and ridge keeping areas of fog over the coastal waters through most of the day. Visibility's are expected to fall again this evening across the coastal waters and perhaps inland as well as the fog advects onshore. Well inland and closer to the front that is stalled across the lakes region and Cen LA a little more mixing may keep the vis higher.

Also tonight and into Saturday the front will begin to lift back north as low pressure develops in the central plains. Another warm day with only a slim chance of a shower well inland is expected.

Sunday the plains low will eject out swinging a cold front to the coast by Sunday night or early Monday. The front will slowly sink into the gulf Monday while an upper level disturbance moves through. A dreary and cooler Monday and perhaps Tuesday can be expected.

Temperatures will be around normal for the date during the middle of the week with a gradual warming trend thereafter.

MARINE . Sea fog will be the main concern through the weekend as a warm and moist air mass moves across the cooler shelf waters. A cold front will move across the coast early Monday decreasing the chances for fog.

PRELIMINARY POINT TEMPS/POPS. AEX 78 63 78 65 / 40 10 10 10 LCH 79 63 77 64 / 10 10 10 10 LFT 79 65 79 66 / 0 10 10 0 BPT 76 63 75 64 / 10 10 10 0

LCH WATCHES/WARNINGS/ADVISORIES. LA . None. TX . None. GM . Dense Fog Advisory until noon CST Saturday for GMZ430-432-435- 450-452-455-470-472-475.



AVIATION . 50


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 5 mi46 min SSE 2.9 G 2.9 67°F 44°F1016.7 hPa
AMRL1 - 8764227 - Amerada Pass, LA 21 mi46 min ESE 1 G 2.9 66°F 49°F1016.3 hPa
EINL1 27 mi46 min E 6 G 6 63°F 44°F1016.1 hPa63°F
BYGL1 - 8762482 - Bayou Gauche, LA 43 mi46 min Calm G 2.9 64°F 65°F1017 hPa

Wind History for Tesoro Marine Terminal, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Patterson Memorial, LA5 mi38 minS 65.00 miFog/Mist67°F67°F100%1016.6 hPa
Salt Point, LA20 mi35 minSSE 3 mi63°F63°F100%1015.9 hPa

Link to 5 minute data for KPTN

Wind History from PTN (wind in knots)
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1 day agoS3CalmN3E3E4CalmCalmSW5SW6SW5SW6SW6S7S6SW7S4S4S6SE5SE5S8S7SE6S8
2 days agoCalmNE3NE3E3CalmCalmCalmSW8SW11S10SW7S9S9S6SW5S5S3S4S3S5S3SW4CalmCalm

Tide / Current Tables for Shell Island, Louisiana
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Shell Island
Click for Map
Sat -- 02:19 AM CST     Full Moon
Sat -- 03:35 AM CST     1.17 feet High Tide
Sat -- 06:32 AM CST     Sunrise
Sat -- 07:01 AM CST     Moonset
Sat -- 09:25 AM CST     -0.49 feet Low Tide
Sat -- 06:03 PM CST     Sunset
Sat -- 06:22 PM CST     1.12 feet High Tide
Sat -- 06:39 PM CST     Moonrise
Sat -- 09:37 PM CST     0.64 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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111.11.21.210.60.2-0.2-0.5-0.5-0.4-0.20.10.30.60.911.11.10.90.70.60.7

Tide / Current Tables for Point Chevreuil, Louisiana
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Point Chevreuil
Click for Map
Sat -- 02:19 AM CST     Full Moon
Sat -- 03:43 AM CST     1.17 feet High Tide
Sat -- 06:33 AM CST     Sunrise
Sat -- 07:02 AM CST     Moonset
Sat -- 09:10 AM CST     -0.49 feet Low Tide
Sat -- 06:04 PM CST     Sunset
Sat -- 06:30 PM CST     1.12 feet High Tide
Sat -- 06:40 PM CST     Moonrise
Sat -- 09:22 PM CST     0.64 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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111.11.21.210.60.1-0.3-0.5-0.5-0.3-0.10.10.40.60.911.11.10.80.70.60.7

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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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.