Monday, November20, 2017 L-36.com


Marine Weather and Tides
Violet, 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 6:28AMSunset 5:02PM Monday November 20, 2017 9:33 AM CST (15:33 UTC) Moonrise 9:11AMMoonset 7:57PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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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GMZ534 Lake Borgne- 922 Am Cst Mon Nov 20 2017
Rest of today..East winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds. Waves or seas subsiding to 1 foot or less. Dominant period 4 seconds in the afternoon.
Tonight..Northeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday..Northeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday night..North winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday..North winds 15 to 20 knots. Waves 1 to 3 feet. Dominant period 4 seconds.
Wednesday night..North winds 20 to 25 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Thursday..North winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Thursday night..North winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds. Waves or seas subsiding to 1 foot or less. Dominant period 4 seconds after midnight.
Friday..Northeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Friday night..Northeast winds near 5 knots becoming southwest in the late evening and early morning, then becoming west after midnight. Waves 1 foot or less. Dominant period 4 seconds.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 922 Am Cst Mon Nov 20 2017
Synopsis..Ridge of high pressure over southern united states will move east today. Another surge of high pressure will move southward into the gulf of mexico Wednesday.

7 Day Forecast for Marine Location Near Violet, LA
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location: 29.97, -89.7     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 200958
afdlix
area forecast discussion
national weather service new orleans la
358 am cst Mon nov 20 2017

Short term
1020+mb surface high pressure is centered around the appalachian
mountains and extends south well into the gulf of mexico. It will
still be building into the CWA even into Tuesday mornings as it
shifts into the western atlantic ocean. Cold airmass within this
ridge will be realized with highs struggling to rise much above 60
degrees again today. Going into Tuesday morning, temperatures will
be slightly warming than this morning, but likely to fall decently
in SW ms and river drainages in sela and coastal ms. The fcst temps
are close to bias corrected MOS guidance for lows and blend of
models for highs.

Long term
Models show a broad trough moving into the middle of the country
from the canada us border to the gulf coast tonight. A split flow
pattern will begin developing by the Tuesday afternoon.

Amplification of both troughs will occur as a reinforcing cold front
passes across the CWA Tuesday night. This should occur before
moisture returns to the forecast area which means any rain chances
will just be for the coastal waters. This FROPA will take the little
warming that will occur on Tuesday and bring temps back down to a
good 5 to 10 degrees below normal for wed-fri.

The CWA will generally remain under troughing through the rest of
this week and through the weekend. This will be the case due to the
mid week trough's lack of progressiveness and a deep trough diving
out of canada into the eastern 1 4 of the CONUS this weekend. This
will keep rain chances out of the picture and temps at to slightly
below normal.

Meffer

Aviation
Mostly clear skies and excellent vsbys are expected through tonight,
except for some broken high level clouds late in the period.

Stronger north to northeast winds of 15 to 20 knots sustained at
knew and some 15 to 20 knot gusts at kmsy will start to ease by or
shortly after sunrise, then lighter winds will prevail the remainder
of the TAF forecast. 18

Marine
Surface high over ohio valley will retreat east today. Pressure
gradient will relax through Tuesday as the associated ridge axis
will remain north of the coastal waters. As a result, northeast
winds will ease and become more easterly today and Tuesday. A
surface low is expected to develop over the central gulf late
Tuesday and move east. Surface winds of coastal waters will become
northeast to north Tuesday night with wind speeds up to 15 to 20
knots.

A cold front will push through the area on Wednesday. The cold
frontal passage will increase north winds to small craft advisory
criteria Wednesday night through Thursday. High pressure will once
again build in over the area Friday and Saturday. 18

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 61 38 68 46 0 0 0 0
btr 62 42 69 48 0 0 10 10
asd 63 42 70 48 0 0 10 10
msy 64 50 71 53 0 0 10 10
gpt 62 44 70 49 0 0 10 10
pql 62 39 70 46 0 0 10 0

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 7 mi46 min ENE 14 G 16 52°F 62°F1024 hPa
NWCL1 - 8761927 - New Canal, LA 22 mi46 min E 8 G 14 52°F 63°F1023.9 hPa
CARL1 23 mi46 min 59°F
OSTF1 - Stennis Test Facility 27 mi44 min SE 1.9 G 5.8 47°F 1024.6 hPa (+0.7)34°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 32 mi46 min E 8.9 G 12 47°F 59°F1024.3 hPa
FREL1 39 mi46 min E 11 G 13 53°F 1023.4 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 40 mi46 min E 1.9 G 4.1 51°F 62°F1024.7 hPa

Wind History for Shell Beach, LA
(wind in knots)    EDIT      (on/off)   Help
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N15
G20
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SW13
G18
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G24
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G27
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SW15
G19
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NW25
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NE3
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G11
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G8
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S10

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans, New Orleans Lakefront Airport, LA18 mi41 minE 1110.00 miFair53°F39°F59%1023.5 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA20 mi39 minE 1010.00 miMostly Cloudy54°F41°F62%1023.9 hPa

Wind History from NEW (wind in knots)
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Last 24hrN17
G22
N16
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N11N14N15N15N16N17N16N17N17N16N18NE20NE18NE20NE18NE19NE16E16E13E13E12E11
1 day agoSW19
G24
S20SW19SW17
G23
SW20
G27
SW19
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SW11SW12
G21
SW14SW14SW15SW13N24N26
G33
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G34
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G30
N18
G26
2 days agoNE6S8S11SW9S10S11S10S9S7S9S7S6S7S8S9S8S8S8S8S7S7S7S10S12

Tide / Current Tables for Shell Beach, Lake Borgne, Louisiana
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Shell Beach
Click for Map
Mon -- 02:20 AM CST     1.42 feet High Tide
Mon -- 06:27 AM CST     Sunrise
Mon -- 08:09 AM CST     Moonrise
Mon -- 01:51 PM CST     -0.10 feet Low Tide
Mon -- 05:00 PM CST     Sunset
Mon -- 06:57 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.41.41.41.31.21.10.90.70.40.20.1-0-0.1-0.1-0.100.10.20.40.50.70.91

Tide / Current Tables for Chef Menteur, Chef Menteur Pass, Louisiana
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Chef Menteur
Click for Map
Mon -- 02:43 AM CST     1.34 feet High Tide
Mon -- 06:28 AM CST     Sunrise
Mon -- 08:10 AM CST     Moonrise
Mon -- 01:31 PM CST     0.07 feet Low Tide
Mon -- 05:00 PM CST     Sunset
Mon -- 06:57 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.31.31.31.31.21.10.90.70.50.30.20.10.10.10.10.20.30.40.50.60.70.91

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 (10,2,3,4)
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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.