Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Port Sulphur, LA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:53AMSunset 7:16PM Sunday March 26, 2017 7:37 PM CDT (00:37 UTC) Moonrise 6:02AMMoonset 5:58PM Illumination 0% Phase: New Moon; Moon at 29 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- 336 Pm Cdt Sun Mar 26 2017
Tonight..South winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Monday..South winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms in the late morning and afternoon.
Monday night..South winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Tuesday..South winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Tuesday night..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday night..Southeast winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Thursday..South winds 15 to 20 knots. Waves 3 to 5 feet. Showers and Thunderstorms likely.
Thursday night..Southwest winds 15 to 20 knots. Waves 3 to 5 feet. Showers and Thunderstorms likely.
Friday..Southwest winds 10 to 15 knots. Waves 2 to 4 feet.
Friday night..South winds near 10 knots becoming southeast after midnight. Waves 1 to 2 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 336 Pm Cdt Sun Mar 26 2017
Synopsis..High pressure centered over the eastern gulf will remain in control of the coastal waters through Wednesday. A low pressure system should then impact the coastal waters on Thursday. High pressure is expected to build back in by 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 262056
afdlix
area forecast discussion
national weather service new orleans la
356 pm cdt Sun mar 26 2017

Short term Much quieter day today. A little fog and low clouds
early this morning quickly gave way to mostly sunny skies and warm
afternoon temperatures. Temperatures were already in the upper 70s
to lower 80s by 18z and we should continue to see another 1-3
degrees of warming by the end of the afternoon.

First issue in the next 60 hours will be tomorrow but overall
things just don't look to promising for rain. Tonight will be
quiet with the system that is producing the severe weather over
the southern plains pushing east into the ozarks. Problem for rain
tomorrow is the best support comes in early Monday. Best upper lvl
divergence, mid lvl speed max, and torugh axis all come through
b/t 12 and 18z. After all of this pushes east/northeast mid lvl
hghts rise and then the cold front slowly approaches along with
some afternoon heating. Maybe the proximity of the front and
daytime heating can spark a few thunderstorms. Best chance for
rain will be north of the 10/12 corridor and this may be a little
optimistic.

As for Monday night and Tuesday it looks like we may have to deal
with fog as the cold front stalls north of the area. The system
Monday will quickly move into the oh/tn valleys. As this happens
mid lvl ridging will be left in its place across the lower ms
valley. This along doesn't bode to well for rain but for some
reason the mdls are trying to print out some very light apf b/t 12
and 18z Tuesday. The thinking is that this could just be fog and
low clouds so will keep most of the area dry with the exception of
token 20% near southwest ms. As for the fog Tuesday morning it
could be dense in a few areas. Moisture will continue to increase
as we remain south of the front. Winds in the low lvls will be
weakening through the night and if there is any rain from Monday
the risk for fog will increase. /cab/

Long term Wednesday will be rain free and very warm as deep
southwest flow takes root ahead of a potent 500 mb trough. Storms
are expected to develop across texas, will will track into la
Wednesday night. Rain chances do not begin to go up across
southeast la and south ms until late in the night Wednesday into
early Thursday morning. The storms will likely be weakening at
that time. Restrengthening and development of storms should take
place Thursday with daytime heating and as the base of the upper
trough arrives. Strong southerly low level flow under westerly
winds aloft suggest favorable shear for some of the storms to be
severe.

For Friday into most of Saturday dry weather is expected from
ridging aloft that develops over the central gulf coast. Another
even deeper trough extending into northern mexico will begin to
anchor to the west. Despite the uncertainity with being towards the
end of the forecast period, the western trough does appear to place
the central gulf coast in a long duration period of southwest flow.

More storms and maybe even a heavy rain threat beginning Saturday
night through Monday may set up as ample moisture streams in.

Krautmann

Aviation
Vfr conditions will persist through around 06z. After 06z, a low
level inversion will develop allowing for another round of low
ceilings and fog to impact the terminals. Ceilings should bottom out
at around 300 feet and visibilities should generally range from 1 to
3 miles. However, kmcb could fall to around one half mile for a few
hours. As a result, lifr and vlifr conditions will be possible at
all of the terminals from 08z through around 14z. After 14z,
conditions should improve into MVFR range of around 2000 feet.

Marine
A weaker pressure gradient over the gulf will keep southerly winds
of around 10 to 15 knots in place through Tuesday. Seas should also
be much calmer at 2 to 4 feet during this period. By Wednesday, an
approaching low pressure system will result in an increased pressure
gradient over the coastal waters. Expect to see onshore flow
increase to 15 to 20 knots on Wednesday, and then further increase
to 20 to 25 knots and small craft advisory range by Thursday. Seas
should also increase to 4 to 7 feet in the open gulf waters during
this period. By Friday, the low should be well east of the area,
and the pressure gradient over the gulf will relax. A lighter west
winds of around 10 knots should take hold, and seas should begin to
drop off. 32

Decision support
Dss code... Green.

Deployed... None.

Activation... None.

Activities... None.

Decision support service (dss) code legend:
green = no weather impacts that require action
blue = long fused watch/warning/advisory in effect or high
visibility event
yellow = heightened impacts with short fused
watch/warning/advisory issuances; radar support
orange = high impacts - slight to moderate risk of severe weather;
nearby tropical events, hazmat or other large episodes
red = full engagement for moderate risk of severe weather; direct
tropical threats; events of national significance.

Preliminary point temps/pops
Mcb 64 84 64 84 / 10 30 10 20
btr 66 84 66 86 / 10 30 10 10
asd 66 82 65 83 / 10 20 10 10
msy 68 83 67 84 / 10 10 10 10
gpt 67 79 66 80 / 10 30 10 10
pql 65 79 65 81 / 10 30 10 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
SHBL1 - 8761305 - Shell Beach, LA 19 mi50 min SE 12 G 16 74°F 74°F1015.9 hPa
GISL1 - 8761724 - Grand Isle, LA 29 mi50 min SSE 7 G 9.9 74°F 75°F1015.7 hPa
KDLP 33 mi38 min 73°F 73°F
PILL1 35 mi50 min SSE 7 G 11 73°F 56°F1016 hPa
CARL1 36 mi50 min 56°F
GRBL1 39 mi98 min SE 9.9 G 12 1015.5 hPa (-1.1)
NWCL1 - 8761927 - New Canal, LA 39 mi50 min S 5.1 G 8.9 77°F 73°F1015.4 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 44 mi50 min S 5.1 G 8 77°F 80°F1015.7 hPa
KXPY 45 mi43 min SE 9.9 75°F 70°F
KMIS 46 mi43 min S 7 77°F 70°F
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 48 mi50 min SE 6 G 8.9
BURL1 - Southwest Pass, LA 49 mi38 min SE 11 G 12 74°F 1016.4 hPa (-0.7)71°F

Wind History for Shell Beach, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boothville, LA22 mi47 minSSE 810.00 miFair74°F70°F88%1016.3 hPa

Wind History from BVE (wind in knots)
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Last 24hrSE4SE4SE5SE6SE9S10S7S6S6S8S5S7E3E46S8SE64SW5SE75S8--SE8
1 day agoSE6SE7SE9SE10SE8SE9SE10SE9SE6SE6SE3SE3SE5S8SE11
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Tide / Current Tables for Bay Gardene, Louisiana
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Bay Gardene
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Sun -- 12:34 AM CDT     1.05 feet High Tide
Sun -- 06:02 AM CDT     Moonrise
Sun -- 06:54 AM CDT     Sunrise
Sun -- 09:27 AM CDT     0.18 feet Low Tide
Sun -- 05:57 PM CDT     Moonset
Sun -- 07:13 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1110.90.80.60.50.30.20.20.20.20.30.40.40.50.50.50.50.50.60.60.70.8

Tide / Current Tables for Gardner Island, Breton Sound, Louisiana
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Gardner Island
Click for Map
Sun -- 06:01 AM CDT     Moonrise
Sun -- 06:53 AM CDT     Sunrise
Sun -- 08:19 AM CDT     0.19 feet Low Tide
Sun -- 05:56 PM CDT     Moonset
Sun -- 07:12 PM CDT     Sunset
Sun -- 11:39 PM CDT     0.89 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.90.80.60.50.40.30.20.20.20.20.30.30.40.40.40.50.50.50.60.70.80.80.9

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 (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.