Tuesday, May22, 2018 L-36.com


Marine Weather and Tides
Port Sulphur, 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 6:00AMSunset 7:52PM Tuesday May 22, 2018 2:16 PM CDT (19:16 UTC) Moonrise 1:22PMMoonset 1:49AM Illumination 54% Phase: First Quarter Moon; Moon at 8 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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GMZ538 Chandeleur Sound-breton Sound- 1003 Am Cdt Tue May 22 2018
Today..Northwest winds near 5 knots becoming north late in the morning, then becoming southeast in the afternoon. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Tonight..South winds 5 to 10 knots becoming southwest after midnight. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Wednesday..North winds near 5 knots becoming east in the afternoon. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Wednesday night..Southeast winds 5 to 10 knots becoming northeast after midnight. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Thursday..East winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Showers and Thunderstorms likely.
Thursday night..East winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Friday..East winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Showers and Thunderstorms likely.
Friday night..East winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Showers and Thunderstorms likely.
Saturday..East winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Showers and Thunderstorms likely.
Saturday night..Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Showers and Thunderstorms likely.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1003 Am Cdt Tue May 22 2018
Synopsis..A weak trough will remain over the coastal waters well into next week. A surface low could move into the southeast gulf by Thursday. This low may begin to affect the north central and northeast gulf region starting Friday.

7 Day Forecast for Marine Location Near Port Sulphur, LA
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location: 29.6, -89.62     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 220902
afdlix
area forecast discussion
national weather service new orleans la
402 am cdt Tue may 22 2018

Short term
Pw values remain near or just above 2" well into next week. This
will lend to the production of heavy rainfall as the number is
higher than the MAX climo norm for this time of year. Basically,
any individual thunderstorm will be capable of heavy rainfall in a
short period of time. The next thing to compound this issue will
be the zero net storm motion vectors today into the weekend. The
only movement that will be noticed will be propagation vectors
which show a creep north and northwest at around 5kt. Wind speeds
with the strongest storms will also remain up to 35 mph.

Waterspouts will also be possible and will become more likely
Friday into the weekend.

Through the next several days, rainfall looks to become the
problematic variable. Even if tropical formation does not occur,
the moisture axis over florida will shift west and should orient
itself from the western most tip of cuba to new orleans. The
heaviest rainfall for the next 7 days should be along and east of
the miss river. Any location east of the miss river will need to
be ALERT of any changes in forecasted conditions not only for
tropical development but where the heaviest rainfall possibilities
will begin to line up over the coming days. Wpc is showing
numbers from 3 to 6 inches for the next seven days over a large
swath of the southeast CONUS mainly along and east of the miss
river with the highest of these numbers from mobile to pensacola.

There is sure to be some isolated higher values along with this as
well. The placement of these numbers may change from time to time
as things get a little better fine tuned.

Aviation
CurrentlyVFR conditions with the exception of khum, where MVFR
ceilings are in place. Can't rule out some fog around sunrise at
kbtr or kmcb, but that should be brief. Anticipate scattered
convection to develop by midday, especially for terminals along and
north of interstate 12 and the mississippi coast. Current prob30
groups will probably morph into tempo groups at most terminals with
the 12z package. Convection likely to produce ifr visibilities with
possible ifr ceilings, as well as wind gusts to 30-40 knots if a
core directly affects a terminal area. While most convection should
die out with sunset, some may linger beyond that as happened during
the past evening. That will likely be handled with amendments as
appropriate. Most of tonight's overnight period beyond 00z will see
vfr conditions with the possible exception of kmcb, where fog is
possible around sunrise Wednesday. 35

Marine
Winds will remain light easterly to southeasterly through
Wednesday before slowly rising to around 15kt Thursday and
possibly up to around 20kt by Friday into the weekend. Depending
on what eventually evolves over the eastern or central gulf,
winds could shift from easterly to north and then southwest over
the weekend. Mariners should remain attentive to subsequent
forecasts for any changes that could occur.

Showers and thunderstorms will be plentiful regardless of the
development of a subtropical or tropical system. Some of these
sh TS will likely develop waterspouts as well.

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 and or
direct tropical threats; events of national significance.

Preliminary point temps pops
Mcb 89 69 89 70 60 20 50 20
btr 89 71 90 72 50 20 50 20
asd 88 71 89 71 50 20 50 30
msy 88 74 90 75 40 20 40 30
gpt 87 74 88 73 50 30 60 40
pql 87 71 88 71 60 40 60 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
SHBL1 - 8761305 - Shell Beach, LA 19 mi46 min E 7 G 8.9 80°F 87°F1016.8 hPa
GISL1 - 8761724 - Grand Isle, LA 29 mi46 min SE 6 G 8.9 83°F 85°F1016.7 hPa
KDLP 33 mi21 min 82°F 72°F
PILL1 35 mi46 min E 5.1 G 8.9 82°F 76°F1017 hPa
CARL1 36 mi46 min 76°F
NWCL1 - 8761927 - New Canal, LA 39 mi46 min NE 2.9 G 5.1 82°F 85°F1016.4 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 44 mi46 min ESE 6 G 8.9 87°F 88°F1016.4 hPa
KXPY 45 mi21 min SE 7 G 12 84°F 70°F
KMIS 46 mi21 min 4.1 84°F 70°F
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 48 mi46 min E 8 G 11 86°F 76°F1017.6 hPa
BURL1 - Southwest Pass, LA 49 mi76 min E 8 G 8.9 80°F 1017.4 hPa (-0.5)72°F

Wind History for Shell Beach, LA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boothville, LA22 mi85 minNE 610.00 miFair87°F70°F57%1017.3 hPa

Wind History from BVE (wind in knots)
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Last 24hrNE9NE10E7E6SE7E5SE4SE3SE4SE3SE3S5S5S5S3CalmE3E3E4E54NE5NE5NE6
1 day agoNE8E7E8E7E7E5SE4SE3SE33CalmSE3CalmCalmCalmCalmCalmCalmCalmN6SW434NE8
2 days agoS7S7S6S9S7S7SE6CalmE3SE4E3SE4SE4E3CalmCalmCalmNE3E35E7NE7NE8NE6

Tide / Current Tables for Bay Gardene, Louisiana
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Bay Gardene
Click for Map
Tue -- 01:49 AM CDT     Moonset
Tue -- 04:53 AM CDT     0.07 feet Low Tide
Tue -- 06:02 AM CDT     Sunrise
Tue -- 01:21 PM CDT     Moonrise
Tue -- 05:30 PM CDT     1.28 feet High Tide
Tue -- 07:48 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.50.30.20.10.10.10.20.30.50.60.80.911.11.21.21.31.31.31.21.110.9

Tide / Current Tables for Gardner Island, Breton Sound, Louisiana
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Gardner Island
Click for Map
Tue -- 01:48 AM CDT     Moonset
Tue -- 03:18 AM CDT     -0.01 feet Low Tide
Tue -- 06:00 AM CDT     Sunrise
Tue -- 01:20 PM CDT     Moonrise
Tue -- 04:06 PM CDT     1.27 feet High Tide
Tue -- 07:47 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.10-000.10.20.30.40.60.70.911.11.21.21.31.31.21.110.90.70.6

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 (15,3,4,5)
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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.