Thursday, November23, 2017 L-36.com


Marine Weather and Tides
Madisonville, 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 6:34AMSunset 5:02PM Thursday November 23, 2017 9:55 PM CST (03:55 UTC) Moonrise 10:36AMMoonset 9:25PM Illumination 29% Phase: Waxing Crescent; Moon at 5 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- 905 Pm Cst Thu Nov 23 2017
Tonight..North winds 10 to 15 knots. Waves 2 feet. Dominant period 4 seconds.
Friday..Northeast winds 5 to 10 knots becoming west late in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Friday night..West winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds.
Saturday..Northwest winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds.
Saturday night..North winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Sunday..North winds 10 to 15 knots. Waves 2 feet. Dominant period 4 seconds.
Sunday night..Northeast winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Monday..East winds 5 to 10 knots. Waves 1 foot or less.
Monday night..Southeast winds 5 to 10 knots. Waves 1 foot or less.
Tuesday..Southeast winds 5 to 10 knots. Waves 1 foot or less.
Tuesday night..East winds 5 to 10 knots. Waves 1 foot or less.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 905 Pm Cst Thu Nov 23 2017
Synopsis..High pressure will prevail over the coastal waters through Friday and will be reinforced over the weekend.

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 240123
afdlix
area forecast discussion
national weather service new orleans la
723 pm cst Thu nov 23 2017

Sounding discussion...

the sounding this evening is dry and stable with northerly flow
throughout. Pw is near the daily minimum for this time of year at
0.26 inches and a broad inversion extends up to 650 mb.

Temperatures are cooling quickly this evening. Slidell is already
down to 43 f and dewpoints are in the low to mid 30s across the
northshore and SW mississippi, so the light freeze for early
Friday morning appears on track. Expect morning frost across these
areas as well.

Krautmann

Prev discussion issued 241 pm cst Thu nov 23 2017
short term...

deep layer northwest flow will remain in firm control of the gulf
south through the weekend. A strong vorticity maxima and
associated reinforcing cold front will slide down from the
northern plains Saturday, and then pass through the region
Saturday night. This system will be moisture starved, so only some
passing mid to high level clouds are expected as it moves through.

Otherwise, continued dry air advection will keep skies clear and
humidity values low through the weekend. A combination of clear
skies and light winds should allow for strong radiational cooling
tonight. A light freeze may occur over parts of the northshore and
southwest mississippi, and have opted to issue a freeze warning
for a light freeze in the aforementioned areas. Temperatures will
remain below average tomorrow with highs only warming into the
middle 60s. Some modification of temperatures is expected tomorrow
night and Saturday in advance of the next approaching short wave
feature, but this slight warming will only push readings closer to
seasonal averages in the 40s at night and the upper 60s and lower
70s during the afternoon hours. Temperatures on Sunday should dip
back below average in the middle 60s as some colder air advects in
behind the reinforcing frontal boundary.

Long term...

a deep layer ridge axis will build over the area on Monday and
Tuesday. This strong ridging will keep clear skies in place as the
atmosphere remains dry and stable. A lingering 925mb cold pool on
Monday should also keep temperatures around 5 degrees below
average on Monday with highs once again only rising into the
middle 60s. Monday morning lows should cool into the upper 30s and
lower 40s at most spots. By Tuesday, the 925mb cold pool should
shift east of the area, and expect to see temperatures climb back
to seasonal averages.

All of the guidance is in agreement that another short wave trough
should affect the region Wednesday into Thursday, but the models
differ on the exact timing and strength of this storm system. The
gfs shows and faster and slightly stronger vorticity MAX sliding
through the area compared to the weaker and slower european model.

At this time, have opted to go with a blend of the solutions for
the middle of next week. Have a low end chance of showers moving
through the area as this short wave trough axis and surface front
approach on Wednesday, and then keep a slight chance of showers in
place through Thursday closer to the louisiana and mississippi
coasts as the front begins to push offshore. Temperatures should
remain near average both Wednesday and Thursday with highs around
70 and lows in the 40s. Little in the way of cold air advection is
anticipated with this next storm system since the airmass moving
in is coming off the pacific as opposed to northern canada.

Aviation...

vfr cavu conditions to prevail all terminals next 24-30 hours.

24 rr
marine...

surface high pressure over the north gulf will remain in place, becoming
re-enforced over the next several days. This will maintain relatively light
winds and low seas for the next 5 days. 24 rr
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 31 66 38 70 0 0 0 0
btr 34 66 40 72 0 0 0 0
asd 33 66 38 71 0 0 0 0
msy 41 65 45 71 0 0 0 0
gpt 36 65 42 70 0 0 0 0
pql 33 67 37 71 0 0 0 0

Lix watches warnings advisories
La... Freeze warning from 4 am to 8 am cst Friday for laz037-039-040-
071-072.

Gm... None.

Ms... Freeze warning from 4 am to 8 am cst Friday for msz068>071-077.

Gm... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FREL1 23 mi37 min NW 1.9 G 4.1 53°F 1016.9 hPa35°F
NWCL1 - 8761927 - New Canal, LA 25 mi37 min N 13 G 15 58°F 61°F1017.7 hPa
OSTF1 - Stennis Test Facility 29 mi65 min Calm G 0 43°F 1017.9 hPa (+1.1)38°F
CARL1 31 mi37 min 58°F
BYGL1 - 8762482 - Bayou Gauche, LA 43 mi37 min NW 1 G 2.9 49°F 60°F1018.2 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 44 mi43 min N 7 G 8.9 52°F 59°F1017.4 hPa
SHBL1 - 8761305 - Shell Beach, LA 44 mi43 min N 12 G 14 57°F 62°F1017.3 hPa

Wind History for New Canal Station, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hammond, Hammond Municipal Airport, LA17 mi60 minN 010.00 miFair41°F33°F76%1018.3 hPa
Slidell, Slidell Airport, LA18 mi62 minN 310.00 miFair44°F35°F71%1017.7 hPa
New Orleans, New Orleans Lakefront Airport, LA24 mi62 minN 1110.00 miFair58°F37°F46%1017.2 hPa

Wind History from HDC (wind in knots)
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Last 24hrN7N8N5CalmN3N5NE3NW3N3N6N8N5N8N11
G14
N6N9N11N9N3CalmCalmCalmCalmCalm
1 day agoCalmN3N4N3CalmN4N6CalmCalmN3N7N9N14
G19
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2 days agoCalmE3CalmCalmCalmCalmCalmCalmCalmCalmE4E3SE3CalmSE3SE4CalmCalmCalmCalmN3N5N3Calm

Tide / Current Tables for Tchefuncta River, Lake Pontchartrain, Louisiana
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Tchefuncta River
Click for Map
Thu -- 06:33 AM CST     Sunrise
Thu -- 09:28 AM CST     0.71 feet High Tide
Thu -- 10:35 AM CST     Moonrise
Thu -- 05:00 PM CST     Sunset
Thu -- 09:25 PM CST     Moonset
Thu -- 09:35 PM CST     0.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.20.30.30.40.50.60.60.70.70.70.70.60.60.50.40.30.20.20.10.1000.1

Tide / Current Tables for Bayou BonFouca, Route 433, Louisiana
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Bayou BonFouca
Click for Map
Thu -- 06:31 AM CST     Sunrise
Thu -- 09:04 AM CST     0.63 feet High Tide
Thu -- 10:33 AM CST     Moonrise
Thu -- 04:59 PM CST     Sunset
Thu -- 08:45 PM CST     0.04 feet Low Tide
Thu -- 09:23 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.20.30.30.40.50.50.60.60.60.60.60.50.50.40.30.20.20.10.10000.1

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 (22,6,7,8)
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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.