Tuesday, January19, 2021
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Marine Weather and Tides
Boothville, 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 5:27PM Tuesday January 19, 2021 8:40 PM CST (02:40 UTC) Moonrise 12:05PMMoonset 12:00AM Illumination 42% Phase: Waxing Crescent; Moon at 7 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:202101201015;;176809 Fzus54 Klix 192111 Cwflix Coastal Waters Forecast National Weather Service New Orleans La 311 Pm Cst Tue Jan 19 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. Gmz536-538-201015- Chandeleur Sound-breton Sound- 311 Pm Cst Tue Jan 19 2021
Tonight..Southeast winds 5 to 10 knots becoming west after midnight. Waves 1 foot or less. Dominant period 4 seconds.
Wednesday..Northeast winds 10 to 15 knots becoming east 5 to 10 knots late in the afternoon. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Thursday..Southwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Thursday night..Southwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers through the night.
Friday..Southwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Friday night..West winds 5 to 10 knots becoming northwest late in the evening, then becoming northeast 10 to 15 knots after midnight. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Saturday..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
Saturday night..East winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Sunday..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Slight chance of showers in the afternoon.
Sunday night..South winds 10 to 15 knots. Waves 2 to 4 feet. Slight chance of showers.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 311 Pm Cst Tue Jan 19 2021
Synopsis..High pressure will shift toward the eastern gulf today and remain there through the end of the week.


7 Day Forecast for Marine Location Near Boothville, LA
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location: 29.49, -89.17     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 200044 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 644 PM CST Tue Jan 19 2021

UPDATE.

Upon examining latest guidance for aviation, the pattern looks favorable for patchy fog to areas of fog after midnight tonight through early to mid morning Wednesday across areas mainly near the coast, tidal lakes and some adjacent river parishes. Dewpoint temperatures are and will remain well below the land and water temperatures, so this will be entirely a radiation fog and not the typical advection fog moving in from the Gulf. A northerly surface wind component and the usual river drainage basins may actually advect the fog to the south across some of the marine area including the tidal lakes and some nearshore Gulf waters. While some of the visibility guidance goes below one-quarter mile, am expecting most of the fog to be light to moderate with some patchy dense fog in some spots. With this in mind, confidence is too low to consider a Dense Fog Advisory at this time. Updates have been sent. 22/TD

AVIATION.

Fairly substantial changes to the TAFs were made with the 00z issuance to include IFR to LIFR in BR/FG late tonight and early Wednesday morning except at KMCB and KBTR. Confidence is not particularly high, but included lower visibility in the 1/2 to 2SM range, except went down to 1/4SM at KHUM where confidence is a bit higher that more widespread fog may develop. 22/TD

PREV DISCUSSION. /issued 317 PM CST Tue Jan 19 2021/

SHORT TERM . Trend of warmer temperatures and dry weather continues with high pressure moving east. Another system approaching will bring moisture back to the area. Next day of rain chances is Thursday for areas mainly north of the lake and should continue through the weekend. /TDB/

LONG TERM . Still monitoring conditions for sea fog as previously mentioned. Dewpoints reaching the low 60s may make for suitable conditions. It looks like late Thursday through Friday will be a likely day for this to take place.

The models are a little all over the place with warm and cold fronts moving in and out of the area over the weekend, however max temps near 70 should remain through at least Tuesday. Precipitation is expected to be light to moderate across the area through the start of next week. There may also be some periods of gusty winds during the more moderate rainfall times.

Overall, not too much taking place in the forecast beyond the mentioned rainfall. /TDB/

AVIATION . VFR conditions for the rest of today. There will be MVFR conditions late tonight through daybreak tomorrow with the possibility for some light fog and visibility restrictions. /TDB/

MARINE . Winds will shift several times over the next few days starting SE, then NE, before shifting back to the SE and finally to SW by Saturday. However, expect for wind speeds to remain fairly light near 10 kts with periods of gusts near 15 kts by Thursday night with light to moderate rain expected through the weekend. Seas should also remain round 1 to 4 feet. Still monitoring conditions for sea fog Thursday night through Friday. Not confident enough yet to add to the grids, but conditions are appearing favorable of of now. /TDB/

PRELIMINARY POINT TEMPS/POPS. MCB 47 65 52 68 / 0 0 10 60 BTR 50 68 54 71 / 0 0 10 30 ASD 47 68 50 70 / 0 10 10 20 MSY 51 66 52 72 / 0 0 0 10 GPT 47 66 50 66 / 0 10 10 20 PQL 45 67 49 67 / 0 0 0 20

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
KMIS 22 mi25 min Calm 66°F 57°F
PILL1 22 mi52 min S 2.9 G 4.1 58°F 45°F1027.2 hPa
SHBL1 - 8761305 - Shell Beach, LA 37 mi52 min E 4.1 G 5.1 56°F 57°F1027.7 hPa
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 41 mi52 min SE 13 G 14
KVKY 42 mi25 min 2.9 64°F 54°F
BURL1 - Southwest Pass, LA 43 mi40 min 13 G 14
GISL1 - 8761724 - Grand Isle, LA 45 mi52 min 2.9 G 4.1 59°F

Wind History for Shell Beach, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Main Pass 140B (Apache Corp), LA22 mi45 minN 0 G 1010.00 miFair66°F57°F73%1027.1 hPa

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 Breton Islands, Louisiana
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Breton Islands
Click for Map
Tue -- 01:26 AM CST     0.45 feet High Tide
Tue -- 06:51 AM CST     Sunrise
Tue -- 10:00 AM CST     0.12 feet Low Tide
Tue -- 11:04 AM CST     Moonrise
Tue -- 05:23 PM CST     Sunset
Tue -- 05:50 PM CST     0.41 feet High Tide
Tue -- 11:41 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Jack Bay, Louisiana
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Jack Bay
Click for Map
Tue -- 01:59 AM CST     0.38 feet High Tide
Tue -- 06:51 AM CST     Sunrise
Tue -- 10:45 AM CST     0.11 feet Low Tide
Tue -- 11:05 AM CST     Moonrise
Tue -- 05:24 PM CST     Sunset
Tue -- 06:23 PM CST     0.35 feet High Tide
Tue -- 11:42 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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.
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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.