Tuesday, June19, 2018 L-36.com


Marine Weather and Tides
Grand Isle, LA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:58AMSunset 8:05PM Tuesday June 19, 2018 9:15 AM CDT (14:15 UTC) Moonrise 11:18AMMoonset 12:00AM Illumination 36% Phase: Waxing Crescent; Moon at 6 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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GMZ552 Coastal Waters From The Southwest Pass Of The Mississippi River To Port Fourchon Louisiana Out 20 Mile- Coastal Waters From Boothville La To Southwest Pass Of The Mississippi River Out 20 Nm- Coastal Waters From Pascagoula Mississippi To Stake Island Out 20 Mile- 426 Am Cdt Tue Jun 19 2018
Today..Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Dominant period 6 seconds. Chance of showers and Thunderstorms.
Tonight..South winds 5 to 10 knots. Seas 3 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms.
Wednesday..South winds 10 to 15 knots. Seas 3 feet. Dominant period 6 seconds.
Wednesday night..South winds 5 to 10 knots. Seas 2 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms after midnight.
Thursday..Southwest winds 10 to 15 knots. Seas 3 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms.
Thursday night..Southwest winds 10 to 15 knots. Seas 3 feet. Dominant period 5 seconds.
Friday..Southwest winds 10 to 15 knots. Seas 3 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms.
Friday night..Southwest winds 10 to 15 knots. Seas 3 feet. Dominant period 5 seconds.
Saturday..Southwest winds 10 to 15 knots. Seas 3 feet. Slight chance of showers and Thunderstorms.
Saturday night..Southwest winds 10 to 15 knots. Seas 3 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 426 Am Cdt Tue Jun 19 2018
Synopsis..A broad area of low pressure will move into texas this morning. High pressure will then build over the eastern gulf of mexico and remain in place through the end of the week.

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


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 190853
afdlix
area forecast discussion
national weather service new orleans la
353 am cdt Tue jun 19 2018

Short term
A tropical wave meandering across southeast texas extends well
across louisiana into mississippi. The upper air sounding from 00z
yesterday showed just how much moisture has spread into the area. Pw
was over 2 inches which is above the 90th percentile for this time
of year. Model soundings show that number creeping up throughout the
day. With so much moisture in place, should be easy for numerous
showers and thunderstorms again today. Therefore, mirrored the mav
for pops today as opposed to the conservative blended guidance. The
main potential impact today will be locally heavy rainfall due to
such efficient rain processes expected.

On Wednesday, an upper ridge will spread south and west across then
gulf of mexico from florida westward. Although subsidence will
moving in from the gulf, still will have enough moisture in place
for rain chances to be in the 40 to 50% range. The only exception is
far easter portions of the CWA where column moisture in lower and
subsidence is stronger.

An upper low will be tracking into the central plains Wednesday and
Thursday. This will cause the ridge over the gulf to retreat
slightly. A gradient in convective coverage will likely exist with
highest pops in northern forecast zones and lowest along the
coastline.

Long term
The aforementioned upper low will lift northeast ending this week,
thus allowing the ridge over the gulf to spread north over the
region this weekend. Subsequently, rain chances will drop quite a
bit and temps should be on the rise. Kept previous pops of 20% and
slightly increased high temps into the lower 90s.

Aviation
Another round of scattered sh TS are expected with more activity to
the west than those terminals to the east. A few sites mainly west
will have ceilings around bkn015 temporarily as most should remain
well inVFR. Some ceilings in the bkn060 can be expected for this
afternoon for a short time as well. Not a lot of difference between
this morning and tonight expected.D low pressure system over texas.

Marine
A fairly tight pressure gradient remains in place over the open gulf
waters west of the mississippi river this morning. Onshore flow of
15 to 20 knots and seas of 4 to 6 feet will persist over these
western waters through this morning. The pressure gradient will
gradually begin to ease tonight and Wednesday as the low over texas
weakens and a broad ridge of high pressure strengthens over the
eastern gulf of mexico. Winds and seas should drop to around 10
knots or less, and seas should fall to 3 feet or less for the latter
part of the week and the upcoming weekend.

Decision support
Dss code: blue.

Deployed: none.

Activation: none.

Activities: none.

Preliminary point temps pops
Mcb 87 73 89 73 60 20 50 20
btr 85 75 89 74 70 20 50 20
asd 88 76 90 75 50 20 20 20
msy 88 77 90 77 50 20 30 10
gpt 89 77 89 77 40 10 20 10
pql 91 75 90 75 30 10 20 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
GISL1 - 8761724 - Grand Isle, LA 7 mi46 min ESE 6 G 9.9 83°F 82°F1017.2 hPa
KXPY 10 mi41 min SE 11 84°F 79°F
LOPL1 - Louisiana Offshore Oil Port, LA 22 mi31 min SE 15 G 16 83°F 4 ft1017.1 hPa
KDLP 27 mi41 min ESE 11 84°F 82°F
SPLL1 - South Timbalier Block 52, LA / CSI06 32 mi136 min SE 14 G 16
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 39 mi46 min ESE 12 G 13 87°F 83°F1017.9 hPa
BURL1 - Southwest Pass, LA 39 mi76 min ESE 13 G 14 83°F 1017.3 hPa (+0.8)78°F
KMDJ 41 mi41 min SE 15 84°F 77°F
PILL1 42 mi46 min ESE 6 G 9.9 83°F 83°F1017.6 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 45 mi46 min E 1.9 G 5.1 82°F 82°F1017.6 hPa

Wind History for Grand Isle, LA
(wind in knots)    EDIT      (on/off)   Help
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Last
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SE9
G14
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G14
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SE14
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G22
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SE4
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G20
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G19
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G21
SE15
G19

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA10 mi41 minSE 119.00 miPartly Cloudy84°F78°F84%1017.3 hPa
Galliano, South Lafourche Airport, LA20 mi21 minE 510.00 miMostly Cloudy83°F77°F84%1017.6 hPa

Wind History from XPY (wind in knots)
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Last 24hrE3S24
G29
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G26
N6N7NE6NE6NE8
G14
E6SE9SE12SE11SE13SE12SE11SE9
G15
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1 day agoSE19
G25
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2 days agoSE6SE9SE10E9
G15
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G24
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G20
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SE11
G17
SE8
G14
SE16SE15
G24

Tide / Current Tables for Caminada Pass (bridge), Mississippi River Delta, Louisiana
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Caminada Pass (bridge)
Click for Map
Tue -- 12:31 AM CDT     Moonset
Tue -- 02:23 AM CDT     0.04 feet Low Tide
Tue -- 06:01 AM CDT     Sunrise
Tue -- 12:17 PM CDT     Moonrise
Tue -- 03:35 PM CDT     0.79 feet High Tide
Tue -- 08:02 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.1000.10.10.20.30.30.40.50.60.70.70.80.80.80.80.70.70.60.50.40.3

Tide / Current Tables for Bayou Rigaud, Grand Isle, Mississippi River Delta, Louisiana
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Bayou Rigaud
Click for Map
Tue -- 12:30 AM CDT     Moonset
Tue -- 01:02 AM CDT     -0.02 feet Low Tide
Tue -- 06:00 AM CDT     Sunrise
Tue -- 12:17 PM CDT     Moonrise
Tue -- 02:26 PM CDT     0.84 feet High Tide
Tue -- 08:01 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0-0-00.10.10.20.30.40.50.60.70.70.80.80.80.80.80.80.70.60.50.40.30.2

Weather Map and Satellite Images
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wmap_A
GOES 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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (10,2,3,4)
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Ground Weather Radar Station New Orleans/Baton Rouge, LA
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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.