Wednesday, August23, 2017 L-36.com


Marine Weather and Tides
Golden Meadow, LA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:34AMSunset 7:35PM Wednesday August 23, 2017 3:21 AM CDT (08:21 UTC) Moonrise 7:24AMMoonset 8:04PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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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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- 936 Pm Cdt Tue Aug 22 2017
Tonight..Southeast winds 5 to 10 knots becoming northeast after midnight. Seas 1 foot. Dominant period 6 seconds. Chance of showers and Thunderstorms.
Wednesday..Northeast winds 5 to 10 knots becoming southeast in the afternoon. Seas 1 foot. Dominant period 6 seconds. Chance of showers and Thunderstorms.
Wednesday night..Southeast winds 5 to 10 knots becoming northeast after midnight. Seas 1 foot. Dominant period 5 seconds. Chance of showers and Thunderstorms through the night.
Thursday..East winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 5 seconds. Chance of showers and Thunderstorms.
Thursday night..Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Friday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 8 seconds. Chance of showers and Thunderstorms.
Friday night..Southeast winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 8 seconds. Chance of showers and Thunderstorms.
Saturday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Saturday night..Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Chance of showers and Thunderstorms.
Sunday..South winds 15 to 20 knots. Seas 3 to 5 feet. Showers and Thunderstorms likely.
Sunday night..South winds 20 to 25 knots. Seas 4 to 7 feet. Showers and Thunderstorms likely.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 936 Pm Cdt Tue Aug 22 2017
Synopsis..High pressure will remain over the coastal waters through Wednesday. A weak front will approach the coast on Thursday and slowly dissipate through the weekend. At the same time, a potential tropical low could form in the southwest gulf and move into texas late in the week or the weekend.

7 Day Forecast for Marine Location Near Golden Meadow, LA
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location: 29.13, -90.42     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 230701
afdlix
area forecast discussion
national weather service new orleans la
201 am cdt Wed aug 23 2017

06z sounding discussion
Routine flight terminated just west of madisonville at a height of
111,000 feet or 21 miles above the surface.

Airmass has dried since 00z flight with precipitable water values
down to 1.85, with drying especially noticeable around 700 mb.

Parcel is somewhat more unstable with MUCAPE of 3588 j kg, a
lifted index of -8 and mid level lapse rates of 6.5c km. Freezing
level remains near 16,000 feet, the -20c at 26,700 feet and the
wet bulb zero level just below 13,000 feet.

Light southerly winds in the boundary layer occasionally became
easterly between 850 and 750 mb, and again briefly around 570 mb.

Winds became southwest between 300 and 150 mb. Winds were a little
stronger in the mid and upper levels with this flight. Maximum
wind below 50 mb was 30 knots near 250 mb, near 36,000 feet. 35

Prev discussion issued 1142 pm cdt Tue aug 22 2017
aviation...

scattered to numerous showers and thunderstorms will again be the
main impact on the terminals during this TAF forecast period.

The convection will be most likely during late morning and in the
afternoon hours Wednesday. Patchy fog will will also be possible
around daybreak Wednesday... Primarily at kmcb... Possibly resulting
in a brief period of MVFR vsbys. Otherwise,VFR category
conditions will prevail outside areas of convection. 11

Preliminary point temps pops
Mcb 73 88 71 90 50 60 30 50
btr 75 90 74 90 50 60 30 60
asd 76 92 76 92 40 40 30 40
msy 77 92 78 90 20 40 30 50
gpt 77 89 77 90 30 40 30 40
pql 75 90 75 91 30 50 30 40

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
KXPY 12 mi46 min NW 2.9 84°F 75°F
SPLL1 - South Timbalier Block 52, LA / CSI06 18 mi141 min SSE 7 G 8.9
GRBL1 24 mi141 min SSE 6 G 7 1015.4 hPa (-0.5)
GISL1 - 8761724 - Grand Isle, LA 26 mi51 min WSW 1.9 G 2.9 85°F 89°F1015.5 hPa
LOPL1 - Louisiana Offshore Oil Port, LA 27 mi93 min SE 5.1 G 7 85°F 2 ft1016.1 hPa
KDLP 46 mi46 min Calm 88°F 75°F
BYGL1 - 8762482 - Bayou Gauche, LA 46 mi51 min Calm G 1.9 77°F 87°F1015.8 hPa
KMDJ 47 mi126 min S 11 86°F 75°F

Wind History for Grand Isle, LA
(wind in knots)    EDIT      (on/off)   Help
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NE4
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA12 mi46 minNW 310.00 miMostly Cloudy84°F75°F74%1015.2 hPa
Galliano, South Lafourche Airport, LA23 mi46 minNNE 310.00 miPartly Cloudy79°F75°F89%1015.2 hPa

Wind History from XPY (wind in knots)
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Last 24hrSE6NE3NE4NE4E4NE7E6E11
G17
E6E7SE4
G10
E7E76
G12
SE6SE6SE5E3E5CalmSE5S6SE4Calm
1 day agoSE5SW5CalmCalmCalmCalmCalmE4NE6E7E8E7E8E8
G14
SE11SE9SE9SE9SE96
G12
SE7SE7SE4SE3
2 days agoN5NE4CalmE6E7NE4NE6NE7NE8E8
G14
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G15
E11E11E7E8SE9SE8E4E6E5SE7SE7SE6SE5
G11

Tide / Current Tables for Pelican Islands, Timbalier Bay, Mississippi River Delta, Louisiana
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Pelican Islands
Click for Map
Wed -- 12:08 AM CDT     0.47 feet Low Tide
Wed -- 06:34 AM CDT     Sunrise
Wed -- 08:23 AM CDT     Moonrise
Wed -- 01:51 PM CDT     1.21 feet High Tide
Wed -- 07:33 PM CDT     Sunset
Wed -- 09:03 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.50.50.50.60.60.70.70.80.911.11.11.21.21.21.11.110.90.80.70.70.6

Tide / Current Tables for Timbalier Island, Timbalier Bay, Mississippi River Delta, Louisiana
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Timbalier Island
Click for Map
Wed -- 06:35 AM CDT     Sunrise
Wed -- 08:23 AM CDT     Moonrise
Wed -- 11:44 AM CDT     1.24 feet High Tide
Wed -- 07:33 PM CDT     Sunset
Wed -- 09:04 PM CDT     Moonset
Wed -- 09:57 PM CDT     0.65 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.60.60.60.70.70.80.911.11.21.21.21.21.21.110.90.80.70.70.70.60.7

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for New Orleans/Baton Rouge, LA (4,6,7,8)
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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.