Wednesday, July15, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Montegut, LA

Version 3.4
NOTICE
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 6:12AMSunset 8:05PM Wednesday July 15, 2020 7:43 AM CDT (12:43 UTC) Moonrise 1:05AMMoonset 2:39PM Illumination 24% Phase: Waning Crescent; Moon at 25 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
    EDIT      (on/off)   Help
GMZ550 Coastal Waters From Port Fourchon La To Lower Atchafalaya River La Out 20 Nm- Coastal Waters From The Southwest Pass Of The Mississippi River To Port Fourchon Louisiana Out 20 Mile- 344 Am Cdt Wed Jul 15 2020
Today..Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 5 seconds. Chance of showers and Thunderstorms through the day.
Tonight..Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 5 seconds.
Thursday..West winds near 5 knots becoming south in the afternoon. Seas 1 foot or less. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Thursday night..Southeast winds near 5 knots. Seas 1 foot or less. Dominant period 4 seconds.
Friday..East winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Friday night..East winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Saturday..East winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms through the day.
Saturday night..East winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Sunday..East winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms through the day.
Sunday night..Southeast winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms after midnight.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 344 Am Cdt Wed Jul 15 2020
Synopsis..High pressure will remain settled over the central gulf waters through the week.


7 Day Forecast for Marine Location Near Montegut, LA
   Hourly   EDIT   Help
location: 29.29, -90.54     debug


Area Discussion for - New Orleans/Baton Rouge, LA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS64 KLIX 150918 AFDLIX

AREA FORECAST DISCUSSION National Weather Service New Orleans LA 418 AM CDT Wed Jul 15 2020

SHORT TERM. An upper level ridge centered over Texas continues to get suppressed by a broad trough out of Canada tracking eastward across the northern third of the country. Weakness aloft over the CWA means both lowering of temps as the atmosphere compresses and increased POPs from subsidence decreasing. Guidance is coming in with fairly high coverage today. Looking at Global and meso models, would probably say more than half agree on likely category of rain chances. So will be sending out today's POPs close to MAV/NBM blend. That puts 60-80% from Houma, across New Orleans to Slidell and MS coast. The rest of the CWA will be more in the 20 to 40% range.

Am concerned to some degree about flash flooding today. PW's are sitting around 2" right now per most recent sounding on station. GFSbfur soundings bring that up to 2.1-2.2" this afternoon. We saw upwards to 2" rainfall totals yesterday across the area with more outflow boundaries at one time than you can count on 2 hands. Thinking just as many outflow boundaries around which can lead to training/backbuilding and if you bump moisture from yesterday we could see a isolated 3 to 4 inch bullseyes around the CWA. Location and how fast that falls will be crucial to whether a flash flooding event occurs.

Finally seeing some appreciable improvements with heat index values. High temps look like they will finally settle back close to climatological normal which should limit HI from reaching advisory criteria. Could bust for a short period today in New Orleans but rain chances quite high there.

MEFFER

LONG TERM. The forecast looks to continue to transition into a more typical summertime environment moving into the latter half of the week and weekend as broad but weaker ridging encompasses the southern half of the country. This will put the CWA under easterly flow. With that we will obviously see easterly waves which will likely bring with them rain. The increase in rain will also be accompanied by greater cloud coverage. In addition to that we also look to have slightly cooler LL temps so the combination of all of these should keep highs in the lower to mid 90s. Now again it will still be somewhat miserable as the humidity is not going to go anywhere so until showers and thunderstorms develop it will be quite muggy with heat indices climbing into the lower to mid 100s each day.

MEFFER

AVIATION. VFR outside TSRA which should affect all terminals from HUM eastward to GPT. BTR and MCB could see a TS or two but should not take the majority of the day. TS activity will bring about IFR conditions rapidly for cigs and vis. Winds could be an issue as well with some of these.

MARINE. Higher winds and seas will be found in and around sh/ts. Overall winds will be onshore around 10kt with a few fluctuations to 15kt for a short time overnight. Daily sh/ts look to be throughout this fcast pack.

PRELIMINARY POINT TEMPS/POPS. MCB 92 75 91 74 / 60 10 70 10 BTR 93 76 92 75 / 50 10 70 10 ASD 92 75 91 75 / 80 20 80 0 MSY 93 80 93 79 / 80 20 80 10 GPT 90 77 88 76 / 70 20 70 0 PQL 92 75 91 73 / 80 20 70 0

LIX WATCHES/WARNINGS/ADVISORIES. LA . None. GM . None. MS . None. GM . None.


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KXPY 21 mi24 min WSW 8 86°F 75°F
GISL1 - 8761724 - Grand Isle, LA 31 mi56 min 84°F
BYGL1 - 8762482 - Bayou Gauche, LA 35 mi56 min 88°F
LOPL1 - Louisiana Offshore Oil Port, LA 39 mi96 min W 5.1 G 8 85°F 2 ft1017.1 hPa74°F
42093 42 mi48 min 85°F2 ft
AMRL1 - 8764227 - Amerada Pass, LA 44 mi56 min 85°F
EINL1 45 mi56 min 85°F
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 45 mi116 min Calm G 1
CARL1 49 mi56 min 86°F

Wind History for Grand Isle, LA
(wind in knots)    EDIT      (on/off)   Help
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last
24hr
W5
W7
W4
NW3
S1
E6
G10
SE8
G11
SE8
G13
S8
G13
SE8
G13
SE9
S8
G12
S6
SE5
G8
S6
G10
S6
SE4
S4
S5
S4
S4
S5
S6
S5
1 day
ago
SW13
SW12
SW12
SW12
SW11
S13
G16
SW15
G19
S15
G19
SE12
G16
SE3
G13
E6
G11
S4
S9
G12
S7
S6
SE5
G8
SE4
S6
S5
S4
S5
S7
S5
W7
2 days
ago
W11
G14
W9
SW8
SW8
SW9
G12
SW12
SW14
SW15
SW15
G19
S14
G19
SW15
SW17
SW16
SW12
G16
SW11
SW10
S8
S4
S7
S8
G11
S8
S8
G11
S8
SW9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houma-Terrebonne Airport, LA20 mi54 minN 07.00 miFair79°F77°F94%1016.6 hPa
Port Fourchon, LA21 mi44 minWSW 710.00 miFair86°F75°F70%1016.6 hPa

Link to 5 minute data for KGAO

Wind History from GAO (wind in knots)
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
Last 24hrSW11
G19
SW13
G16
W11W7W6W3SW4SW5SW5SW5SW5W5SW7SW7W8W8SW11SW9W9W9
G15
W10
G17
SW11SW10SW16
G19
1 day agoCalmS5S6SW9W7W6W3W4W3W5NW7NW6W7NW7NW8NW8W7W7SW8SW5W7
G14
SW11
G15
W11SW10
2 days agoSW7W4W6W7W5W5W4W5W3W4W4W3W3W4NW7NW10NW8NW7NW6NW8NW5NW4W3NE3

Tide / Current Tables for Cocodrie, Terrebonne Bay, Louisiana
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Cocodrie
Click for Map
Wed -- 02:05 AM CDT     Moonrise
Wed -- 06:13 AM CDT     Sunrise
Wed -- 08:16 AM CDT     0.99 feet High Tide
Wed -- 03:39 PM CDT     Moonset
Wed -- 07:42 PM CDT     0.05 feet Low Tide
Wed -- 08:03 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.50.60.70.70.80.90.91110.90.90.80.70.60.50.30.20.10.10.10.10.20.3

Tide / Current Tables for Pelican Islands, Timbalier Bay, Mississippi River Delta, Louisiana
   EDIT      (on/off)   Help   One Week of Data
Pelican Islands
Click for Map
Wed -- 02:04 AM CDT     Moonrise
Wed -- 06:13 AM CDT     Sunrise
Wed -- 08:44 AM CDT     1.16 feet High Tide
Wed -- 03:38 PM CDT     Moonset
Wed -- 08:02 PM CDT     Sunset
Wed -- 08:24 PM CDT     0.14 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.50.50.60.70.80.911.11.11.21.11.110.90.70.60.40.30.20.20.10.20.20.3

Weather Map
       (on/off)   Help Weather Map
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 (8,2,3,4)
      (on/off)   Help

Ground Weather Radar Station New Orleans/Baton Rouge, LA
   (on/off)   Help
weather_mapweather_map weather_map

Gulf Stream Current


Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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.