Monday, January18, 2021
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Marine Weather and Tides
Port Sulphur, 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 6:54AMSunset 5:26PM Monday January 18, 2021 8:18 AM CST (14:18 UTC) Moonrise 11:38AMMoonset 11:51PM Illumination 26% Phase: Waxing Crescent; Moon at 5 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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GMZ538 Expires:202101182230;;098435 Fzus54 Klix 180920 Cwflix Coastal Waters Forecast National Weather Service New Orleans La 320 Am Cst Mon Jan 18 2021 Pascagoula To Atchafalaya River Out To 60 Mile Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest Ten Percent Of The Waves. Gmz536-538-182230- Chandeleur Sound-breton Sound- 320 Am Cst Mon Jan 18 2021
Today..Northeast winds 5 to 10 knots becoming southeast in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Tonight..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday..Southeast winds near 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday night..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Wednesday..Northeast winds 5 to 10 knots becoming east late in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Wednesday night..South winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Thursday..Southwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
Thursday night..Southwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
Friday..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Chance of showers.
Friday night..Northwest winds near 10 knots becoming northeast in the late evening. Waves 1 to 2 feet. Slight chance of showers.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 320 Am Cst Mon Jan 18 2021
Synopsis..High pressure will remain centered over the northern gulf coast through tonight. The high pressure system will then shift toward the eastern gulf on Tuesday and remain there through the end of the week.


7 Day Forecast for Marine Location Near Port Sulphur, LA
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location: 29.6, -89.62     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 180921 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 321 AM CST Mon Jan 18 2021

SHORT TERM. A slow warming trend will begin Tuesday. Moisture will also begin to move back into the area as another system approaches.

LONG TERM (Thursday through Sunday).

The overall upper level pattern looks fairly consistent between varies long term model guidance. The period begins with a deep 500mb cut of low stranded over Baja California and separated from the mean flow across the CONUS. The upper level pattern over the Northern Gulf Coast is marked by zonal flow. Meanwhile, at the surface, high pressure will be across the Southeastern US with southerly flow over the region. This will allow increased moisture and warming temperatures to return to the area.

Increased moisture also means the return of precip chances to SE LA and portions of MS. Upper level impulses will eject out of the upper level low and move eastward through the zonal flow over southern LA/MS. Meanwhile, a stalled frontal boundary across Louisiana will act as a focus for rainfall as these impulses move eastward.

Unsettled weather and rounds of rainfall will likely continue from Thursday into the weekend However, timing, placement, and rainfall amounts will be hard to pin down this far out as any upper level waves and the placement of the surface boundary will likely change over the coming days. Also there could be periods of dry weather depending on how far north of south the frontal system meanders.

Temperature-wise, given the warm air mass in place, highs and lows will be more moderate. Highs through this period will be in the 60s to lower 70s, with overnight lows in the 50s to lower 60s.

AVIATION.

VFR conditions through this taf cycle.

MARINE.

NW winds around 15kt will remain for a short time this morning. Winds will ease rapidly after sunrise and remain light at 10 knots or less as high pressure continues to settle directly over the waters. Seas will also subside to around 2 to 3 feet in response to the lighter winds. Return flow will begin to develop tonight into Tuesday but should remain around 10kt then rise toward the end of the week.

PRELIMINARY POINT TEMPS/POPS. MCB 62 40 69 47 / 0 0 10 10 BTR 64 43 72 49 / 0 0 0 10 ASD 61 41 69 47 / 0 0 0 0 MSY 62 46 70 52 / 0 0 0 0 GPT 60 42 67 48 / 0 0 0 0 PQL 61 40 67 46 / 0 0 0 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
SHBL1 - 8761305 - Shell Beach, LA 19 mi48 min S 2.9 G 2.9 47°F 53°F1022.8 hPa
GISL1 - 8761724 - Grand Isle, LA 29 mi48 min 2.9 G 5.1 54°F
PILL1 35 mi48 min NE 4.1 G 4.1 45°F 44°F1022.6 hPa
CARL1 36 mi48 min 44°F
NWCL1 - 8761927 - New Canal, LA 39 mi48 min SSE 1.9 G 2.9 42°F 51°F1021.7 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 44 mi48 min Calm G 0 41°F 50°F1023 hPa
KMIS 46 mi23 min NE 9.9 57°F 34°F
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 48 mi48 min NNE 8 G 8.9 47°F 45°F1021 hPa
BURL1 - Southwest Pass, LA 49 mi78 min 14 G 14

Wind History for Shell Beach, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KBVE

Wind History from BVE (wind in knots)
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1 day agoS12SW12SW12S11S10S9S12S10S10S8S9S9S10S10S9S9SW10SW13N11
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2 days agoNE7NE6NE5E4NE5E3CalmCalmCalmSE3CalmCalmN3CalmSE3SE4S7S6S9S8S10S11S11S12

Tide / Current Tables for Gardner Island, Breton Sound, Louisiana
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Gardner Island
Click for Map
Mon -- 01:18 AM CST     0.76 feet High Tide
Mon -- 06:52 AM CST     Sunrise
Mon -- 10:36 AM CST     Moonrise
Mon -- 11:38 AM CST     -0.01 feet Low Tide
Mon -- 05:23 PM CST     Sunset
Mon -- 10:49 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.80.70.70.60.50.40.30.20.10-0-000.10.10.20.20.30.30.30.40.40.4

Tide / Current Tables for Shell Beach, Lake Borgne, Louisiana
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Shell Beach
Click for Map
Mon -- 04:59 AM CST     0.66 feet High Tide
Mon -- 06:54 AM CST     Sunrise
Mon -- 10:37 AM CST     Moonrise
Mon -- 03:31 PM CST     -0.01 feet Low Tide
Mon -- 05:24 PM CST     Sunset
Mon -- 10:51 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.40.50.60.60.70.60.60.50.40.30.20.10.10-0-000.10.10.20.20.20.3

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



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.