Wednesday, November14, 2018 L-36.com


Marine Weather and Tides
New Orleans, LA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:24AMSunset 5:06PM Wednesday November 14, 2018 2:38 PM CST (20:38 UTC) Moonrise 12:12PMMoonset 11:07PM Illumination 42% Phase: First Quarter Moon; Moon at 7 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- 1012 Am Cst Wed Nov 14 2018
Today..Northwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers in the morning.
Tonight..Northwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Thursday..Northwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Thursday night..North winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday..North winds near 5 knots becoming west late in the afternoon. Waves less than 1 foot. Dominant period 4 seconds.
Friday night..West winds near 5 knots becoming northeast after midnight. Waves less than 1 foot. Dominant period 4 seconds.
Saturday..East winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds.
Saturday night..Northeast winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds.
Sunday..Northeast winds near 5 knots. Waves less than 1 foot.
Sunday night..Northeast 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- 1012 Am Cst Wed Nov 14 2018
Synopsis..A strong ridge of high pressure will build over the coastal waters and become centered across the region by the end of the week.


7 Day Forecast for Marine Location Near New Orleans, LA
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location: 30.07, -90.06     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 141756
afdlix
area forecast discussion
national weather service new orleans la
1156 am cst Wed nov 14 2018

Aviation section updated...

Sounding discussion
This morning's balloon launch was successful, and there were no
issues. Looking at the sounding, the overall atmospheric profile
is moist. The CAPE is 1 j kg and the CIN is 0 j kg in the mixed
layer, indicating a lack of convection in the atmosphere. There
may still be a stray shower or two in the area. The vertical wind
profile is mostly uniform with height. At the surface, the winds
are westerly and weak (5 knots). At the lower, middle, and upper
levels, the winds are strong (120 knots) and southwesterly. Msw
prev discussion... Issued 352 am cst Wed nov 14 2018

Short term
An upper level low centered over northeast texas will be pushing east-
northeast across arkansas today. This will finally bring an end to
the ongoing wet period. Radar imagery this morning shows the back
side of the rain shield to be just south of a houma to chalmette to
bay st louis line. Medium range and meso models all agree that the
rain will slowly by steadily shift east throughout the day with
slight differences on timing. The latest forecast is a blend of
those solutions. Post frontal air mass remains well entrenched and
the combination of overcast skies and strong cold air advection will
limit warming considerably. Highs will once again struggle to get
out of the mid 40s which is only a few degrees from the current temp
and 25 to 30 degrees below normal.

Long term
The remainder of this week and into the weekend looks to be a dry
forecast as surface high pressure builds in and upper level
troughing remains in place. Continental air mass will be bringing
the first light freeze of this fall season to the area Thursday
morning. The met and mav have tightened up on the differences but
the met is still the cooler of the 2. For tonight's lows, blended
the met and mav. Those numbers are fairly similar to previous
forecasts, so have upgraded the freeze watch to a warning for the
same parishes counties. As the surface ridge building in shifts to
just northeast of the area on Friday morning, will likely have cold
air drainage in northeastern portions of the CWA (from mcb to asd to
pql). Those areas may once again dip down to freeze or just below.

Temperatures will be moderating Friday and Saturday as the upper low
ejects northeast. The GFS and moreso ECMWF indicate that a weak
upper level inflection will bring a reinforcing cold front through
the CWA Sunday night. Rain chances are not very likely as it will be
a moisture starved boundary due to a lack of return flow ahead of it
and generally just slightly strengthen northerly surface flow.

Meffer

Aviation
Updated 1756z
Latest radar imagery across the area continues to show a steady
decrease in light rain coverage, with most light rain confined
along coastal regions of SE la. A strengthening upper-level low to
our north will continue to drag continued colder air from the
northwest, and help kick out any lingering rain through the rest
of today. Clouds may stick around through this evening, with
overcast cig's ranging between 008 and 012. However, the back edge
of the thick cloud canopy will push east of the area early
tonight with clear skies for all terminals by daybreak tomorrow.

Winds will also be breezy at times today, but should become more
calm tonight for inland terminals. Near coast terminals may remain
breezy through the night, as a developing 925mb speed max
develops behind the back edge of the departing upper-level low.

Otherwise, no other significant impacts are expected tonight
through tomorrow. Klg

Marine
Strong north winds will remain over the gulf waters today. These
conditions will likely stay through tonight and possibly even into
Thursday before easing. SCA flags have been extended through today
for the outer waters while caution conditions should hold over the
inner waters. Wind speeds will slowly ease through the remainder of
the week and should be back down to around 10kt by the end of the
week.

Decision support
Dss code: blue
deployed: none
activation: none
activities: freeze warning in effect for majority of area
small craft advisory in effect for coastal waters
river flood warning along the pearl river near
bogalusa to pearlington and along the mississippi river
at red river landing
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
excessive rainfall, or direct tropical threats; events of
national significance.

Preliminary point temps pops
Mcb 28 50 30 59 10 0 0 0
btr 30 52 32 61 10 0 0 0
asd 30 52 31 59 10 0 0 0
msy 35 52 39 59 10 0 0 0
gpt 32 52 34 58 10 0 0 0
pql 30 52 30 58 20 0 0 0

Lix watches warnings advisories
La... Freeze warning from midnight tonight to 9 am cst Thursday for
laz034>037-039-040-046>050-056>059-065-071-072.

Gm... Small craft advisory until 9 am cst Thursday for gmz555-557-570-
572-575-577.

Ms... Freeze warning from midnight tonight to 9 am cst Thursday for
msz068>071-077-080>082.

Gm... Small craft advisory until 9 am cst Thursday for gmz557-570-572-
575-577.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWCL1 - 8761927 - New Canal, LA 4 mi39 min WNW 6 G 12 42°F 57°F1026 hPa (-2.2)
CARL1 10 mi39 min 57°F
FREL1 19 mi39 min WNW 2.9 G 8.9 1024.9 hPa (-2.6)
SHBL1 - 8761305 - Shell Beach, LA 25 mi39 min NW 19 G 22 43°F 58°F1025.6 hPa (-2.1)
BYGL1 - 8762482 - Bayou Gauche, LA 27 mi39 min N 1.9 G 2.9 40°F 56°F1026 hPa (-2.5)
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 43 mi39 min NW 13 G 16 39°F 55°F1025.4 hPa (-1.3)

Wind History for New Canal Station, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans, New Orleans Lakefront Airport, LA3 mi46 minNNW 1510.00 miOvercast42°F37°F82%1024.7 hPa
New Orleans, New Orleans International Airport, LA12 mi46 minWNW 1010.00 miOvercast42°F37°F82%1026.6 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA17 mi1.7 hrsNW 7 G 156.00 miFog/Mist42°F37°F85%1025.7 hPa
Slidell, Slidell Airport, LA23 mi46 minNW 710.00 miOvercast40°F34°F79%1025.9 hPa

Wind History from NEW (wind in knots)
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1 day agoNW14CalmSW3NW3NW10NW15NW20N16N16N15N14NW18NW22NW21N22N23N16
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2 days agoNE7E8E9E10E11E14E13E14NE16NE15NE20NE20E15E12E10E13E8E8E6SE7S8S8NW11W11

Tide / Current Tables for New Canal USCG station, Lake Pontchartrain, Louisiana
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
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Paris Road Bridge
Click for Map
Wed -- 06:19 AM CST     1.16 feet High Tide
Wed -- 06:23 AM CST     Sunrise
Wed -- 12:11 PM CST     Moonrise
Wed -- 05:04 PM CST     Sunset
Wed -- 06:31 PM CST     0.07 feet Low Tide
Wed -- 11:07 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.70.80.911.11.21.21.110.90.80.70.50.40.30.20.10.10.10.10.20.30.4

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.
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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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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.