Monday, July6, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Grand Isle, 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 6:04AMSunset 8:06PM Monday July 6, 2020 10:57 PM CDT (03:57 UTC) Moonrise 8:38PMMoonset 6:22AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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
GMZ552 Expires:202007071615;;442334 Fzus54 Klix 070309 Cwflix Coastal Waters Forecast National Weather Service New Orleans La 1009 Pm Cdt Mon Jul 6 2020 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. Gmz550-552-071615- 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- 1009 Pm Cdt Mon Jul 6 2020
Rest of tonight..Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 5 seconds. Slight chance of showers and Thunderstorms through the night.
Tuesday..Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Tuesday night..Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 6 seconds.
Wednesday..Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 6 seconds.
Wednesday night..Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 5 seconds.
Thursday..Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 5 seconds.
Thursday night..West winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 5 seconds.
Friday..West winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 5 seconds.
Friday night..West winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Saturday..West winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Saturday night..West winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms after midnight.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1009 Pm Cdt Mon Jul 6 2020
Synopsis..A trough of low pressure will hold across the northern gulf region and remain in place through tomorrow. High pressure will build from the gulf northward towards the coast later in the week.


7 Day Forecast for Marine Location Near Grand Isle, LA
   Hourly   EDIT   Help
location: 29.2, -90.05     debug


Area Discussion for - New Orleans/Baton Rouge, LA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS64 KLIX 070304 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 1004 PM CDT Mon Jul 6 2020

UPDATE.

Updated forecast earlier to lower rain chances in the evening, but have somewhat higher chances returning again overnight and especially in the morning Tuesday. Rainfall coverage and amounts are not expected to be as high as late last night and this morning, but still some locally heavy rainfall amounts could cause some localized flooding issues. Updates have been sent.

AVIATION.

Mostly VFR conditions are expected to prevail with any lower conditions expected to be brief and localized overnight and early Tuesday. Scattered to at times numerous SHRA/TSRA that are expected again on Tuesday will produce brief lower MVFR to LIFR conditions, so later TAF issuances may need to include that possibility.

22/TD

PREV DISCUSSION. /issued 342 PM CDT Mon Jul 6 2020/

SHORT TERM .

Main issue over the next roughly 24 hours will be the continued threat of heavy rain leading to flooding issues across the area. The sounding this morning showed PW values near 2.3", which is not far off from the highest for this date. Not surprisingly, we had quite efficent rainfall rates from storms this morning. Coverage has waned some in the past hour or two but there still remains a threat for heavy rainfall leading to flash flooding across just about any part of our CWA. The Flash Flood Watch will continue through tomorrow evening for this reason along with the saturated conditions in many areas from previous rains. Some areas cannot take much if any in the way of additional rainfall.

With the above said, POPs were lowered some for tomorrow as the overall coverage does not seem to be as high as expected. The main messaging is that regardless of the coverage of storms, whatever does develop will more than likely again be capable of dumping significant rainfall amounts in a short period of time.

LONG TERM .

By Wednesday, the pattern will begin to change and high pressure centered over the western states will slide more towards the area, getting us out of this weakness between systems. As the high pressure moves in, rain chances will diminish as temperatures climb. High temperatures in the mid 90s are likely for the weekend with heat index values ranging from 100-105 each afternoon.

AVIATION .

Radar trends early this afternoon continue to show disorganized areas of heavy rain and thunderstorms scattered across the area. This activity is beginning to wane but light drizzle may persist across many of these areas.

Short-range models hint at the potential for more convection to develop later this evening, and have introduced this potential in area TAF sites, as we remain in such a moist environment. These should come to an end well before midnight, with another round by Tuesday morning along with the same threats persisting.

MARINE .

A general weakness associated with a surface trough near the coast and surface high pressure over the southeastern Gulf will keep winds mainly out of a westerly direction through much of the week. Some onshore flow may be produced temporarily through the week with scattered showers and thunderstorms expected across the coastal waters for the rest of today and into tomorrow. Higher winds and seas can be expected near any thunderstorms that develop. Drier conditions expected from Wednesday through the weekend as high pressure builds back into the area.

PRELIMINARY POINT TEMPS/POPS. MCB 73 86 74 88 / 30 80 20 70 BTR 74 87 75 90 / 30 60 10 50 ASD 74 88 74 90 / 20 50 10 50 MSY 75 88 76 90 / 30 40 10 40 GPT 75 87 76 88 / 30 60 10 50 PQL 73 89 73 90 / 30 70 20 50

LIX WATCHES/WARNINGS/ADVISORIES. LA . Flash Flood Watch through Tuesday evening for LAZ034>037-039-040- 046>050-056>072.

GM . None. MS . Flash Flood Watch through Tuesday evening for MSZ068>071-077- 080>082.

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
GISL1 - 8761724 - Grand Isle, LA 7 mi58 min 7 G 8 83°F
KXPY 10 mi38 min SSW 6 81°F 77°F
42093 17 mi62 min 83°F2 ft
LOPL1 - Louisiana Offshore Oil Port, LA 22 mi41 min 9.9 G 12 81°F 2 ft1016.1 hPa74°F
KDLP 27 mi43 min SW 13 81°F 75°F
BURL1 - Southwest Pass, LA 39 mi58 min 8.9 G 9.9
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 39 mi58 min SW 7 G 9.9 81°F 1013.6 hPa (+0.6)
PILL1 42 mi58 min SW 8.9 G 11 80°F 83°F1015.1 hPa (+0.5)
BYGL1 - 8762482 - Bayou Gauche, LA 45 mi58 min SSW 1.9 G 2.9 77°F 78°F1014.8 hPa (+0.4)

Wind History for Grand Isle, LA
(wind in knots)    EDIT      (on/off)   Help
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
-12
PM
-12
PM
7
PM
8
PM
9
PM
10
PM
Last
24hr
W8
G11
W6
W3
W5
W6
W5
W5
SW17
G21
S5
SW13
G17
SW12
SW10
S9
G13
S12
G15
SW18
SW11
G14
S12
G17
S11
G16
S8
G11
S5
S4
S7
1 day
ago
S1
W3
NW2
SW2
SW1
SW3
SW4
SW8
SW6
G10
W5
W4
NW3
SW18
G22
SW10
G14
SW8
SW9
NW19
G23
NW6
NW5
W5
SW5
S2
W11
2 days
ago
W9
NW9
NW8
G12
NW4
SW3
SW7
W10
W9
W7
NW6
W3
NW4
W4
W4
W6
W8
SW9
G12
SW11
SW10
G13
SW11
SW11
SW6
N5
G8
N2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA10 mi58 minSSW 510.00 miFair81°F75°F84%1015.2 hPa
Galliano, South Lafourche Airport, LA20 mi81 minSSW 310.00 miFair79°F75°F89%1014.6 hPa

Link to 5 minute data for KXPY≥os=east/se

Wind History from (wind in knots)oops, file error: weather/buffer/KXPY≥os=east/seairportwind
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
-12
PM
Last 24hr------------------------------------------------
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Caminada Pass (bridge), Mississippi River Delta, Louisiana
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Caminada Pass (bridge)
Click for Map
Mon -- 06:06 AM CDT     Sunrise
Mon -- 07:22 AM CDT     Moonset
Mon -- 12:43 PM CDT     1.25 feet High Tide
Mon -- 08:03 PM CDT     Sunset
Mon -- 09:38 PM CDT     Moonrise
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
-0.2-0.2-0.1-00.10.20.40.60.70.911.21.21.21.21.110.80.60.40.20.1-0.1-0.1

Tide / Current Tables for Bayou Rigaud, Grand Isle, Mississippi River Delta, Louisiana
   EDIT      (on/off)   Help   One Week of Data
Bayou Rigaud
Click for Map
Mon -- 06:06 AM CDT     Sunrise
Mon -- 07:22 AM CDT     Moonset
Mon -- 11:31 AM CDT     1.35 feet High Tide
Mon -- 08:02 PM CDT     Sunset
Mon -- 09:38 PM CDT     Moonrise
Mon -- 11:08 PM CDT     -0.30 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
-0.3-0.2-0.10.10.30.50.70.911.21.31.31.31.31.210.80.60.30.1-0-0.2-0.3-0.3

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.

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (23,6,7,8)
      (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.