Sunday, May20, 2018 L-36.com


Marine Weather and Tides
Golden Meadow, 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 6:05AMSunset 7:53PM Sunday May 20, 2018 7:52 PM CDT (00:52 UTC) Moonrise 10:19AMMoonset 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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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- 338 Pm Cdt Sun May 20 2018
Tonight..Southeast winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 5 seconds. Slight chance of showers and Thunderstorms after midnight.
Monday..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms.
Monday night..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms in the evening.
Tuesday..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms.
Tuesday night..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms in the evening.
Wednesday..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 6 seconds. Chance of showers and Thunderstorms.
Wednesday night..Southeast winds near 10 knots becoming east after midnight. Seas 1 to 2 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms.
Thursday..Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Chance of showers and Thunderstorms.
Thursday night..Southeast winds 10 to 15 knots becoming northeast after midnight. Seas 2 to 4 feet. Slight chance of showers and Thunderstorms.
Friday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet. Chance of showers and Thunderstorms.
Friday night..Northeast winds 10 to 15 knots. Seas 2 to 4 feet. Chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 338 Pm Cdt Sun May 20 2018
Synopsis..High pressure to the northeast of the coastal waters, and low pressure to the south of the coastal waters will keep a general east-southeast flow in place through Thursday. The area of low pressure will strengthen and move into the northern gulf by 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 202047
afdlix
area forecast discussion
national weather service new orleans la
347 pm cdt Sun may 20 2018

Discussion
Little change from the previous forecast. Should transition to a
more active pattern beginning tomorrow, with daily scattered
showers and thunderstorms, primarily in the afternoon. Difficult
to pinpoint exactly which areas will see showers storms each day,
so area average rainfall numbers are fairly low, but as is typical
this time of year, individual heavier storms could produce an inch
or two of rain over smaller areas.

Increased cloud cover and afternoon convection should help keep
temperatures below the record heat we've seen of late as well.

Expect highs to top out in the upper 80s or lower 90s each day.

Lows will remain a few degrees above normal, only dropping into
the upper 60s north and lower 70s south.

Going into the second half of the week, significant uncertainties
are introduced into the forecast as models continue to show
disparate solutions concerning an area of low pressure and
associated moisture moving through the gulf of mexico. The GFS is
a bit more amplified with an upper level trough, and ships the
energy and associated moisture off to the northeast across
florida. The euro on the other hand brings the disturbance and
moisture through the central gulf toward the lower mississippi
valley. Obviously the euro would result in a wetter solution for
the local area. For the time being have continued to carry a blend
of available guidance, which results in chance pops each day
through the end of the period. This will continue to be
adjusted tweaked as the situation becomes clearer.

Aviation
Vfr conditions will continue to be the prevailing condition at all
of the terminals through much of the forecast period. However, a
round of fog and low ceilings could develop at kmcb around 12z in
the morning resulting in lifr conditions. Scattered convection is
also expected to develop after 17z tomorrow that could briefly
reduce visibilities and produce gusty winds. Otherwise, no
significant impacts to aviation are expected through tomorrow
afternoon.

Marine
Little change in the ongoing weather pattern is expected through
Thursday. A seabreeze cycle will dominate the sounds and tidal
lakes with weak offshore winds in the morning hours switching to an
onshore wind by the afternoon. Farther offshore, a prevailing east-
southeast wind of around 10 knots is expected. Seas will generally
range from 1 to 3 feet. By Friday, a weak area of low pressure may
move into the coastal waters and winds could increase to around 15
knots. The wind field should also take on a more northeasterly
direction as the low sits just southeast of the coastal waters. Seas
should rise to 2 to 4 feet as the wind increase. Overall, a fairly
benign weather pattern is expected for much of the weak.

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; marginal risk severe or excessive rain.

Yellow = heightened impacts with short-fused watch, warning or
advisory issuances; radar support for slight risk severe or
excessive rain.

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

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

Preliminary point temps pops
Mcb 69 88 68 88 20 60 30 50
btr 70 89 70 89 20 40 30 50
asd 69 88 69 88 20 50 30 50
msy 74 89 73 89 20 40 20 50
gpt 71 87 71 87 20 60 30 50
pql 68 87 69 87 20 50 30 40

Lix watches warnings advisories
La... None.

Gm... None.

Ms... None.

Gm... None.

Aviation marine... 32
rest of discussion... 95 dm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KXPY 12 mi37 min ESE 6 G 13 82°F 73°F
SPLL1 - South Timbalier Block 52, LA / CSI06 18 mi112 min ESE 8 G 9.9
GISL1 - 8761724 - Grand Isle, LA 26 mi52 min SSE 7 G 11 82°F 83°F1015.5 hPa (-0.5)
LOPL1 - Louisiana Offshore Oil Port, LA 27 mi76 min SE 9.9 G 12 80°F 2 ft1016.1 hPa
KDLP 46 mi37 min SSE 6 81°F 75°F
BYGL1 - 8762482 - Bayou Gauche, LA 46 mi52 min SE 5.1 G 8 85°F 89°F1015.6 hPa (-0.4)
KMDJ 47 mi37 min SE 9.9 81°F 72°F

Wind History for Grand Isle, LA
(wind in knots)    EDIT      (on/off)   Help
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Last
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S6
G9
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G11
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G11
SE7
G11
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1 day
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W11
N10
G15
NW3
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G7
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SW2
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G9
SW8
G12
SW5
G11
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G11
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G8
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G7
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G10
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G9
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G12
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2 days
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W12
G18
W13
G16
W12
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G17
W10
G16
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G15
W9
G13
W12
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G13
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G12
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SW7
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G11
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G13
SW10
G17
SW9
G15
SW13
G17
SW11
G15

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA12 mi57 minESE 910.00 miA Few Clouds82°F73°F74%1015.6 hPa
Galliano, South Lafourche Airport, LA23 mi57 minESE 410.00 miPartly Cloudy83°F69°F63%1015.2 hPa

Wind History from XPY (wind in knots)
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Last 24hrSE6SE7SE7SE6SE7
G12
SE8SE7SE7SE6SE7SE6SE7SE8SE76
G12
E8E9E10E8SE7E9SE9SE7SE6
G13
1 day agoN7
G13
CalmS5SW6S4S5S8S7S5S4S4S6S9S7SE8SE7S7SE10SE11SE9
G15
SE10S7S8SE7
2 days agoSW12
G19
W14SW12W12
G18
W10
G16
W11
G16
W11W8
G14
SW9W8SW9SW9SW8
G14
SW8
G15
W10W13W11
G16
SW8SW11SW10
G16
SW11
G17
SW10
G15
SW9
G15
NW10

Tide / Current Tables for Pelican Islands, Timbalier Bay, Mississippi River Delta, Louisiana
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Pelican Islands
Click for Map
Sun -- 12:17 AM CDT     Moonset
Sun -- 03:16 AM CDT     -0.30 feet Low Tide
Sun -- 06:07 AM CDT     Sunrise
Sun -- 11:18 AM CDT     Moonrise
Sun -- 03:38 PM CDT     1.37 feet High Tide
Sun -- 07:49 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0-0.2-0.3-0.3-0.3-0.2-0.10.10.20.40.60.811.21.31.41.41.31.21.10.90.70.50.3

Tide / Current Tables for Timbalier Island, Timbalier Bay, Mississippi River Delta, Louisiana
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Timbalier Island
Click for Map
Sun -- 12:17 AM CDT     Moonset
Sun -- 01:13 AM CDT     -0.31 feet Low Tide
Sun -- 06:07 AM CDT     Sunrise
Sun -- 11:19 AM CDT     Moonrise
Sun -- 01:31 PM CDT     1.40 feet High Tide
Sun -- 07:49 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.3-0.3-0.3-0.2-0.10.10.20.40.70.911.21.31.41.41.31.31.10.90.70.50.30.20

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Southeast    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 (20,4,5,8)
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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.