Tuesday, May30, 2017 L-36.com


Marine Weather and Tides
New Orleans, 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 5:58AMSunset 7:57PM Tuesday May 30, 2017 4:12 AM CDT (09:12 UTC) Moonrise 10:05AMMoonset 11:40PM Illumination 23% 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- 400 Am Cdt Tue May 30 2017
Today..Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Showers and Thunderstorms likely.
Tonight..Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Wednesday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Showers and Thunderstorms likely.
Wednesday night..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Thursday..Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Thursday night..Southeast winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Friday..South winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Showers and Thunderstorms likely.
Friday night..South winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Saturday..South winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Showers and Thunderstorms likely.
Saturday night..South winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 400 Am Cdt Tue May 30 2017
Synopsis..A diffuse trough will remain over the northern gulf coast through the week. A weak surface low is expected to form over the western gulf and move through the coastal waters over the weekend.

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 300823
afdlix
area forecast discussion
national weather service new orleans la
323 am cdt Tue may 30 2017

Synopsis
Rather disorganized pressure and wind fields across the local area
with another surge of convection pressing northward across the
coast near grand isle. Temperatures generally in the lower and
middle 70s with dew points around 70.

Short term
The shortwave triggering this morning's convection can be seen on
water vapor loops south of lake charles. The next one in the
series can already be seen moving across west texas, with a third
one over baja california. Airmass will remain conducive for
convection in the short term as these impulses eventually roll
across the area. We seem to be getting them about every 12 hours
or so, and don't see much reason for the pattern to change in the
short term. No longer a signal for significant drying through late
in the week. Forecast precipitable water values remain between 1.5
and 2 inches across most of the area. Will continue with good
chance to likely pops for the next 36 hours with a slight
preference for the daytime hours. Not out of the question that a
storm or two could approach severe limits with wind being the main
threat. Also potential for one or two spots to see excessive
rainfall as convection has the potential to repeat in some areas.

Both SPC and wpc advertising marginal risks for severe heavy rain for
a good portion of our area today and tonight. Threat diminishes
slightly on Wednesday.

Will use blended temperature guidance realizing that timing of
convection may produce temperature busts in some locations. Will
go with highs in the lower and middle 80s through Thursday. 35

Long term
Unfortunately, do not see any large scale signals that there will
be any significant change in the pattern through the weekend. This
means scattered to numerous thunderstorms each day with higher
chances during the day and somewhat lesser chances overnight. Gfs
hints at possibly some drying as we get toward Tuesday or
Wednesday of next week, but will wait on better agreement before
making too many changes to extended forecast. Will use blended
temperature guidance as there is no real preference between medium
range models. 35

Aviation
Ceilings will remain at ovc080+ outside shra this morning. Ceilings
will fall to ovc015 as tsra develop and move through once again
today. No much in the way of change in this TAF pack as disturbances
can almost be timed roughly every 12 hours. Another disturbance is
scheduled to move through this morning. And yet another by late this
evening. Will use vcts in most if not all tafs once again.

Marine
Light to occasionally moderate onshore flow will prevail across the
coastal waters through the week as a ridge of high pressure remains
to the east. Two diffuse boundaries exist that will be used as a
sort of duct. One is well inland but the other is along the coast.

The coastal boundary will be responsible for the sh TS over the
coastal waters again today and tonight as well as for the next few
days. A slight decrease in activity may occur Thursday and Friday
but chances of sh TS will once again be on the rise as we move into
next weekend. Winds and seas will be much higher in and near
thunderstorms throughout the week.

Decision support
Dss code... Blue.

Deployed... None.

Activation... None.

Activities... Monitoring mississippi river.

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 80 66 83 68 70 40 70 30
btr 82 69 85 70 60 40 70 30
asd 82 69 84 72 50 40 50 20
msy 83 71 84 73 60 50 60 20
gpt 82 71 83 73 50 40 50 20
pql 84 68 85 69 50 40 50 20

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
NWCL1 - 8761927 - New Canal, LA 4 mi42 min ENE 1 G 1.9 74°F 81°F1017.5 hPa
CARL1 10 mi42 min 74°F
FREL1 19 mi42 min ESE 5.1 G 5.1 76°F 1016.7 hPa71°F
SHBL1 - 8761305 - Shell Beach, LA 25 mi42 min E 8 G 9.9 77°F 81°F1017.7 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 27 mi42 min E 1.9 G 2.9 73°F 84°F1018 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 43 mi42 min SE 6 G 8 77°F 79°F1017.9 hPa

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 mi19 minSSE 410.00 miOvercast76°F72°F88%1017.5 hPa
New Orleans, New Orleans International Airport, LA12 mi19 minESE 510.00 miLight Rain73°F71°F94%1018.1 hPa
New Orleans, Naval Air Station - Alvin Callender Field, LA17 mi17 minESE 510.00 miPartly Cloudy0°F0°F%1018.3 hPa
Slidell, Slidell Airport, LA23 mi19 minNNE 310.00 miLight Rain71°F69°F94%1017.8 hPa

Wind History from NEW (wind in knots)
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Last 24hrNE10SE9W14W19SE9S11SE7N6NE8SE8N8N8N8N8NW8W19
G24
CalmNE14E7SE5SE4E4SE4SE4
1 day agoS8SW8NW6NW4NW5W3W4N7N5N8NE14NE9SE13SE8S16S14S3S3W3W10NW7N21
G27
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2 days agoS9S9S6S9S8S12SW11SW8SW10
G16
SW12SW10SW9S13S14S12S12S14S13S13S14S12S11S11S10

Tide / Current Tables for New Canal USCG station, Lake Pontchartrain, Louisiana
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New Canal USCG station
Click for Map
Tue -- 06:00 AM CDT     Sunrise
Tue -- 10:44 AM CDT     0.07 feet Low Tide
Tue -- 11:06 AM CDT     Moonrise
Tue -- 07:56 PM CDT     Sunset
Tue -- 10:34 PM CDT     0.42 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.40.40.30.30.20.20.20.10.10.10.10.10.10.10.20.20.30.30.40.40.40.40.4

Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
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Paris Road Bridge
Click for Map
Tue -- 05:59 AM CDT     Sunrise
Tue -- 06:27 AM CDT     -0.19 feet Low Tide
Tue -- 11:05 AM CDT     Moonrise
Tue -- 06:48 PM CDT     1.23 feet High Tide
Tue -- 07:55 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.40.20-0.1-0.2-0.2-0.2-0.1-00.10.20.40.50.70.911.11.21.21.21.110.9

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 (5,6,7,8)
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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.