Friday, December6, 2019
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Marine Weather and Tides
Belle Chasse, LA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:40AMSunset 5:02PM Friday December 6, 2019 12:03 PM CST (18:03 UTC) Moonrise 1:52PMMoonset 1:24AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 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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GMZ534 Lake Borgne- 935 Am Cst Fri Dec 6 2019
Rest of today..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of light rain.
Tonight..Southeast winds near 5 knots becoming north in the late evening and overnight. Waves less than 1 foot building to 1 to 2 feet. Dominant period 4 seconds. Chance of light rain in the evening.
Saturday..North winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Saturday night..Northeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Sunday..East winds 5 to 10 knots becoming south late in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Sunday night..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Monday..Southwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Monday night..Southwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Tuesday..Southwest winds near 10 knots becoming north in the late morning and afternoon. Waves 1 to 2 feet. Dominant period 4 seconds. Showers likely.
Tuesday night..North winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 935 Am Cst Fri Dec 6 2019
Synopsis..A cold front will move across the north gulf tonight. High pressure will then settle over the north central and northwest gulf coast over the weekend. Another cold front will move through the area Tuesday.


7 Day Forecast for Marine Location Near Belle Chasse, LA
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location: 29.78, -90     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 060928 AFDLIX

AREA FORECAST DISCUSSION National Weather Service New Orleans LA 328 AM CST Fri Dec 6 2019

SHORT TERM. A weak shortwave is currently racing across Oklahoma and will continue through the lower Mississippi Valley today, bring a few showers across the CWA. Coverage should be upwards of 40 to 50% but with qpf amounts mainly less than a tenth of an inch. Before the cooler air moves in with the front associated with this trough, temps should warm quite a bit today. Highs yesterday were right at to slightly above MAV guidance, so went with that same trend for today. Thus, expect highs to max out in the mid to upper 70s. The cooler air will then move in tonight into Saturday, which will bring temps down to slightly below climatological normals. Shallowness and quick speed of the shortwave means those cool temps will only last for a day before beginning to moderate. Sunday will bring a continuation of Saturday, albeit slightly warmer. Could be a few lingering showers in the coastal waters as the previous cold front stalls in the northern Gulf. Most should remain offshore but possible to have isolated showers reach coastal parishes/counties in the CWA.

LONG TERM. A much more amplified upper level trough will move into the midsection of the country Monday, before lifting northeast Wednesday. It will start out as 2 separate troughs, one coming out of Canada and another racing through the Desert Southwest. They will merge Tuesday, spanning across the entire eastern half of the country. A cold front associated with this feature will move through the forecast area Tuesday morning. Expecting showers ahead of, along, and post frontal. Event qpf amounts still look to be on the lower side, generally a quarter to half an inch. POP forecast is generally a blend of those 2 models. The rain should quickly exit Wednesday as the apex of the trough passes east of the region. The rest of the forecast period will yield no to low rain chances and temps running several degrees below normal.

MEFFER

AVIATION. Ceilings at a few sites have started to develop at OVC020-030. This will continue to be the trend this morning at all sites. After ceilings become established, they will begin to lower through the remainder of the day and overnight. By this evening ceilings should be lower than OVC010. Some -RA will also accompany the lowering ceilings. A few mainly coastal sites could observe some lowered vis later today into tonight. A cold front will move through this evening cleaning most of these conditions out.

MARINE. SE winds will remain at 10-15kt today. There is a potential that some fog will start to form later this morning and throughout the remainder of the day into tonight. The fog should stay within the nearshore waters. Areas of fog will be used for these locations but this may be spread over the lakes as well if trends show development over those areas today. A cold front moves through this evening lifting and moving the fog out of the area. Behind this front, winds will shift to northerly around 10-15kt through Saturday. Winds will become light and variable once again Sunday before abruptly becoming south Sunday night around 15-20kt. These conditions should hold into Monday night as another cold front approaches. Strong northerly winds and widespread showers will develop and remain through the day Tuesday. These conditions will be pressed south into the central gulf Wednesday, but will rapidly move back into the area for the end of next week.

DECISION SUPPORT.

DSS code: Blue. Deployed: None. Activation: None. Activities: Forecast support to City of New Orleans

DECISION SUPPORT.

DSS code: Blue. Deployed: None. Activation: None. Activities: Forecast support to City of New Orleans

PRELIMINARY POINT TEMPS/POPS. MCB 72 53 64 51 / 40 30 10 10 BTR 77 54 64 50 / 40 20 0 10 ASD 75 54 67 51 / 40 30 0 10 MSY 76 57 66 54 / 40 30 0 10 GPT 70 54 65 54 / 40 30 0 10 PQL 74 54 68 52 / 40 30 10 10

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
CARL1 13 mi46 min 51°F
NWCL1 - 8761927 - New Canal, LA 18 mi52 min SSW 8.9 G 18 74°F 60°F1017.9 hPa
SHBL1 - 8761305 - Shell Beach, LA 18 mi52 min S 13 G 16 73°F 61°F1019.1 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 22 mi52 min SSW 7 G 8 76°F 60°F1018.8 hPa
FREL1 32 mi46 min SW 8 G 13 76°F 1017.5 hPa
GISL1 - 8761724 - Grand Isle, LA 36 mi46 min SSE 2.9 G 7 65°F
KXPY 47 mi139 min S 8.9 G 18 72°F 68°F

Wind History for Shell Beach, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans Naval Air Station - Alvin Callender Field, LA4 mi69 minSSW 1610.00 miPartly Cloudy76°F66°F72%1019 hPa
New Orleans, New Orleans Lakefront Airport, LA18 mi71 minSSW 1510.00 miA Few Clouds76°F63°F64%1018.2 hPa
New Orleans, New Orleans International Airport, LA19 mi71 minS 810.00 miMostly Cloudy77°F64°F66%1019.1 hPa

Link to 5 minute data for KNBG

Wind History from NBG (wind in knots)
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Last 24hrSE6SE10SE7SE9E5E3E5SE4CalmCalmSE3CalmSE4SE3CalmSE3CalmSE3SE4SE5S5S10S16S12
1 day agoNW7NW8N74CalmN3CalmNE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE7E9E10SE9
2 days ago54W3SW4SW3SW5S3SW6SW5SW4SW4SW5W3CalmCalmCalmCalmCalmCalmCalmW5NW6NW7N6

Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
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Paris Road Bridge
Click for Map
Fri -- 01:23 AM CST     Moonset
Fri -- 02:31 AM CST     0.54 feet High Tide
Fri -- 06:41 AM CST     Sunrise
Fri -- 01:51 PM CST     Moonrise
Fri -- 04:59 PM CST     Sunset
Fri -- 05:46 PM CST     0.29 feet Low Tide
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 Shell Beach, Lake Borgne, Louisiana
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Shell Beach
Click for Map
Fri -- 01:22 AM CST     Moonset
Fri -- 01:44 AM CST     0.63 feet High Tide
Fri -- 06:40 AM CST     Sunrise
Fri -- 01:50 PM CST     Moonrise
Fri -- 04:48 PM CST     0.34 feet Low Tide
Fri -- 04:58 PM CST     Sunset
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.
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 numerious 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.