Thursday, May25, 2017 L-36.com


Marine Weather and Tides
Madisonville, LA

Version 3.4
What's New / NOTES
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 6:00AMSunset 7:57PM Thursday May 25, 2017 1:17 PM CDT (18:17 UTC) Moonrise 5:05AMMoonset 6:54PM Illumination 0% Phase: New Moon; Moon at 0 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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GMZ530 Lake Pontchartrain And Lake Maurepas- 1029 Am Cdt Thu May 25 2017
Rest of today..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tonight..South winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday..South winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds.
Friday night..South winds 10 to 15 knots. Waves 2 feet. Dominant period 4 seconds.
Saturday..Southwest winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Saturday night..Southwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Sunday..Southwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Sunday night..Southwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday..Southwest winds near 10 knots. Waves 1 to 2 feet. Chance of showers and Thunderstorms.
Monday night..Northwest winds 5 to 10 knots. Waves 1 foot or less. Chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1029 Am Cdt Thu May 25 2017
Synopsis..High pressure will move across the coastal waters today and then move east of the region tonight. The high will then remain centered east of the area through the weekend. A weak front should stall near the coast early next week.

7 Day Forecast for Marine Location Near Madisonville, LA
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location: 30.38, -90.16     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 251728
afdlix
area forecast discussion
national weather service new orleans la
1228 pm cdt Thu may 25 2017

Aviation
Vfr conditions expected through the forecast period. 35

Prev discussion issued 339 am cdt Thu may 25 2017
short term...

beautiful conditions to last at least one more day. Warming will
begin before the muggies move back over the area. Friday will be
the transition day as temps will warm to around 90. But it will
remain rather dry through the day as dew pt temps will continue to
be in the low to mid 60s until Friday evening when southerly
winds will begin to bring the warm muggy conditions back. Everyone
will retire Friday evening with rather nice conditions and wake
up Saturday morning to dew pt temps back in the low to mid 70s
which will be noticeable. These conditions look to persist
through the majority of next week if not longer.

A cold front will move south and stall near the coast late Monday.

The northern portion of the area should see rain chances increase
Sunday ahead of the front. But Monday, the entire area should see
sh TS development with the exception of coastal sections from
terrebonne to stbernard parish. The battle ground of Monday's
activity will be where the frontal induced thunderstorm outflows
come in contact with the sea breeze which should be mainly over
the northshore areas and southern mississippi. The coastal areas
should observe subsident conditions behind the sea breeze that
moves well inland which would tend to suppress convective
initiation for those areas. Once the front stalls, some weak jet
support will keep sh TS in the fcast Monday night as well. The
trough that is left along the coast will remain a focus for sh ts
development helped along by the daily collision of a sea breeze.

This diurnally driven cycle should last through Friday.

As far as severity of weather is concerned, this may have to be
solved on a daily basis. Basically, it looks like a normal summer
pattern setting up with a better than normal scattering of sh ts
daily with one or two possibly breaking that severe barrier. But
the best chance of receiving a severe thunderstorm could be Sunday
and Monday.

Long term...

after Friday, the old trough boundary looks to possibly lift back
toward the northeast. If this occurs, it would take the sh ts
percentages down but cause the hot muggy conditions to be
maintained to a slightly higher degree by next weekend.

Aviation...

vfr conditions will prevail at all of the terminals through the
forecast period.

Marine...

high pressure will settle over the area today allowing the gradient
flow over the gulf waters to ease through the morning hours. Expect
to see winds shift from a westerly component at 10 to 15 knots to a
more southwest component at 5 knots or less by this afternoon as the
surface ridge moves directly over the coastal waters. As the high
shifts to the east tonight, winds will turn southerly and increase
to 10 to 15 knots. Seas will also decrease from 3 to 5 feet this
morning to 2 to 4 feet by the evening hours. High pressure will
remain parked over the eastern gulf through the weekend, and expect
to see the southerly flow to 10 to 15 knots persist. A weak frontal
boundary could slip into the area by next Monday. Winds could
decrease to 10 knots or less and turn more variable with the front
in the vicinity. 32
decision support...

dss code... Blue.

Deployed... None.

Activation... None.

Activities... Monitoring mississippi river flooding
decision support services (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 severe; nearby
tropical events; hazmat or other large episodes
red = full engagement for moderate tonight risk svr
and or direct tropical threats; events of national
significance

Preliminary point temps pops
Mcb 82 62 90 69 0 0 0 10
btr 83 64 90 72 0 0 0 10
asd 83 66 89 73 0 0 0 10
msy 83 68 90 75 0 0 0 10
gpt 81 69 87 74 0 0 0 10
pql 82 64 86 71 0 0 0 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
FREL1 23 mi53 min WNW 2.9 G 9.9 78°F 1011.7 hPa53°F
NWCL1 - 8761927 - New Canal, LA 25 mi53 min NNW 4.1 G 7 75°F 78°F1012.9 hPa
OSTF1 - Stennis Test Facility 29 mi87 min NW 3.9 G 5.8 76°F 1013.4 hPa (+0.9)51°F
CARL1 31 mi59 min 72°F
BYGL1 - 8762482 - Bayou Gauche, LA 43 mi53 min W 6 G 9.9 77°F 78°F1013.1 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 44 mi53 min W 7 G 11 75°F 78°F1012.2 hPa
SHBL1 - 8761305 - Shell Beach, LA 44 mi53 min N 2.9 G 5.1 74°F 77°F1012.9 hPa

Wind History for New Canal Station, LA
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W7
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NE3
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hammond, Hammond Municipal Airport, LA17 mi22 minWNW 910.00 miFair79°F46°F32%1012.5 hPa
Slidell, Slidell Airport, LA18 mi24 minVar 610.00 miFair78°F52°F40%1012.4 hPa
New Orleans, New Orleans Lakefront Airport, LA24 mi24 minNNW 710.00 miFair78°F55°F47%1012.3 hPa

Wind History from HDC (wind in knots)
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Last 24hrNW11
G21
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G25
W13
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NW12
G16
W10
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G19
NW6NW4NW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW3CalmW8W4
1 day agoNW9NW13NW7NW4NW7N4NW4NW4NW4CalmCalmW4CalmW5W5NW8NW8NW8NW12
G17
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G22
N14
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2 days agoCalmCalmSE3E6NE4E3E4E5E4E9S11
G15
S7S7S8S10S9
G14
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W9W8W8W6NW4CalmNW10
G14

Tide / Current Tables for Tchefuncta River, Lake Pontchartrain, Louisiana
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Tchefuncta River
Click for Map
Thu -- 06:01 AM CDT     Sunrise
Thu -- 06:04 AM CDT     Moonrise
Thu -- 06:31 AM CDT     -0.06 feet Low Tide
Thu -- 02:46 PM CDT     New Moon
Thu -- 07:53 PM CDT     Moonset
Thu -- 07:54 PM CDT     Sunset
Thu -- 08:02 PM CDT     0.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.30.20.10-0-0.1-0.1-000.10.20.20.30.40.50.50.60.70.70.70.70.70.6

Tide / Current Tables for Bayou BonFouca, Route 433, Louisiana
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Bayou BonFouca
Click for Map
Thu -- 05:41 AM CDT     -0.05 feet Low Tide
Thu -- 06:00 AM CDT     Sunrise
Thu -- 06:03 AM CDT     Moonrise
Thu -- 02:46 PM CDT     New Moon
Thu -- 07:38 PM CDT     0.66 feet High Tide
Thu -- 07:51 PM CDT     Moonset
Thu -- 07:52 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.20.10-0-0-0.1-000.10.10.20.30.30.40.50.50.60.60.60.70.60.60.5

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 (14,3,4,5)
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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.