Monday, January22, 2018 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 6:55AMSunset 5:34PM Monday January 22, 2018 4:13 AM CST (10:13 UTC) Moonrise 10:24AMMoonset 10:43PM Illumination 31% 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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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- 314 Am Cst Mon Jan 22 2018
Today..West winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 7 seconds. Chance of light rain early in the morning, then chance of showers and Thunderstorms late in the morning. Chance of light rain in the afternoon.
Tonight..Northwest winds 15 to 20 knots. Seas 3 to 6 feet. Dominant period 7 seconds.
Tuesday..North winds 15 to 20 knots. Seas 3 to 6 feet. Dominant period 5 seconds. Waves or seas subsiding to 2 to 4 feet. Dominant period 5 seconds in the afternoon.
Tuesday night..North winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 4 seconds.
Wednesday..Northeast winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 4 seconds.
Wednesday night..Northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Dominant period 4 seconds.
Thursday..East winds 15 to 20 knots. Seas 3 to 6 feet with occasional seas to 8 feet. Dominant period 4 seconds.
Thursday night..East winds 15 to 20 knots. Seas 3 to 6 feet with occasional seas to 8 feet. Dominant period 7 seconds.
Friday..Southeast winds 15 to 20 knots. Seas 4 to 7 feet with occasional seas to 9 feet. Chance of showers.
Friday night..Southeast winds 15 to 20 knots. Seas 4 to 7 feet with occasional seas to 8 feet building to 5 to 8 feet with occasional seas to 10 feet after midnight. Showers likely and slight chance of Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 314 Am Cst Mon Jan 22 2018
Synopsis..A cold front will move through the northern gulf today. Moderate offshore flow is expected after the frontal passage and will persist through Wednesday. High pressure will shift east by the end of the of week and yield a moderate easterly flow over the coastal waters Thursday and Friday.

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 220954
afdlix
area forecast discussion
national weather service new orleans la
354 am cst Mon jan 22 2018

Short term
Fog developed over lake pontchartrain but elsewhere winds and
gentle lift has caused the stratus deck to remain at 500-800ft.

A cold front located in east texas this morning will continue
moving east with sh TS out ahead of the boundary. An area of
convective development should begin to develop over then northern
gulf this morning which will begin to moisture starve the
southern end of the front. This should help in the lowering of
severe chances with exception to the northern gulf. But
parameters for a severe thunderstorm, although weak, will remain
and a marginal risk also remains for the eastern portion of the
area. If any thunderstorm is capable of taking advantage of these
variables, then an isolated severe would still be possible even
outside the marginal risk area. The actual cold front, will take
from noon at baton rouge until just after dark to reach
pascagoula. Once the front moves through, dry dew pt air will move
in bringing cool dry conditions and mostly clear skies through
Thursday with a day or two of cirrus.

Long term
Extended was left as is since model agreement is not occurring.

The general pattern is for a sfc low to develop Friday into
Saturday and move toward the area. Models are beginning to hint
that the low will couple with the front as it approaches the
northern gulf coast and kick out to the northeast giving somewhat
lower land impacts but keeping marine impacts fairly high. Again,
it will only take a slight shift of this low back to the west to
cause the extended portion of this forecast to become more
problematic. For this reason, we have left the extended with
likely sh TS chances for land areas by the end of the week but
kept most of the strongest weather near the coast and offshore.

Aviation
Winds have remained elevated this morning aiding in the lack of fog
development. Showers and thunderstorms associated with a rapidly
approching cold front will pass through the area from east to west
beginning by around 12z and last through late afternoon well east. A
few showers are beginning to develop out ahead of the main line and
could impact kmcb and kbtr a bit sooner. By this evening, all rain
will have moved to the east of the area.

Marine
Fog over the area lakes has developed overnight and will continue to
impact these areas through the mid-morning hours. An approaching
cold front will bring a stretch of strong northerly winds over the
next couple of days. By Thursday, high pressure will slide east with
the associated ridge axis stretching to east texas. As a result,
winds will become east to southeast Thursday and Friday.

Decision support
Dss code: green.

Deployed: none.

Activation: none.

Activities: none.

Decision support services (dss) code legend
green = no weather impacts that require action.

Blue = long-fused watch, warning, or advisory in effect or
high visibility event.

Yellow = heightened impacts with short-fused watch, warning or
advisory issuances; radar support.

Orange = high impacts; slight to moderate risk severe; nearby
tropical events; hazmat or other large episodes.

Red = full engagement for moderate risk of severe and or
direct tropical threats; events of national significance.

Preliminary point temps pops
Mcb 70 40 58 35 90 0 0 0
btr 71 41 60 36 80 0 0 0
asd 71 43 60 38 70 10 0 0
msy 72 46 59 42 70 0 0 0
gpt 69 45 60 39 60 10 0 0
pql 70 45 61 37 70 10 0 0

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 mi18 min SSE 6 66°F 64°F
SPLL1 - South Timbalier Block 52, LA / CSI06 18 mi133 min SE 19 G 20
GISL1 - 8761724 - Grand Isle, LA 26 mi43 min SSE 7 G 11 63°F 57°F1014.2 hPa
LOPL1 - Louisiana Offshore Oil Port, LA 27 mi24 min S 18 G 21 71°F 4 ft1013.1 hPa
KDLP 46 mi18 min SSE 20 66°F 66°F
BYGL1 - 8762482 - Bayou Gauche, LA 46 mi43 min ESE 2.9 G 2.9 60°F 50°F1014.5 hPa
KMDJ 47 mi38 min S 22

Wind History for Grand Isle, LA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA12 mi78 minSE 11 G 166.00 miFog/Mist66°F64°F94%1013.9 hPa
Galliano, South Lafourche Airport, LA23 mi78 minSE 610.00 miFair64°F59°F88%1013.9 hPa

Wind History from XPY (wind in knots)
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Last 24hrSE6SE6E5E6E9E9SE9
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1 day agoE5E5E6E4E4E8E9E8SE10E9
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SE4E4SE7SE9SE9SE7SE8SE9
2 days agoN5N7NE7N5N7NE9NE8NE7NE10NE9NE11NE8E9E8NE8E7E9E11E6E6E6E8
G14
E7NE6

Tide / Current Tables for Pelican Islands, Timbalier Bay, Mississippi River Delta, Louisiana
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Pelican Islands
Click for Map
Mon -- 01:56 AM CST     0.55 feet High Tide
Mon -- 06:54 AM CST     Sunrise
Mon -- 10:23 AM CST     Moonrise
Mon -- 12:45 PM CST     -0.04 feet Low Tide
Mon -- 05:31 PM CST     Sunset
Mon -- 10:43 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.50.60.50.50.50.40.30.20.10-0-0-0-000.10.10.20.20.30.30.30.3

Tide / Current Tables for Timbalier Island, Timbalier Bay, Mississippi River Delta, Louisiana
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Timbalier Island
Click for Map
Mon -- 06:55 AM CST     Sunrise
Mon -- 10:24 AM CST     Moonrise
Mon -- 10:42 AM CST     -0.04 feet Low Tide
Mon -- 05:32 PM CST     Sunset
Mon -- 10:43 PM CST     Moonset
Mon -- 11:34 PM CST     0.37 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.50.50.50.40.30.20.10-0-0-0-000.10.20.20.30.30.30.30.40.40.4

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 (5,6,7,8)
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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.