Sunday, November19, 2017 L-36.com


Marine Weather and Tides
New Orleans, 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 5:03PM Sunday November 19, 2017 6:09 AM CST (12:09 UTC) Moonrise 7:20AMMoonset 6:14PM Illumination 1% Phase: New Moon; Moon at 1 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- 335 Am Cst Sun Nov 19 2017
.small craft advisory in effect until 9 am cst this morning...
.small craft exercise caution in effect from 9 am cst this morning through this afternoon...
Today..North winds 20 to 25 knots easing to 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Tonight..Northeast winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Monday..East winds 10 to 15 knots easing to near 5 knots late in the afternoon. Waves 1 to 2 feet. Dominant period 4 seconds.
Monday night..East 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 15 to 20 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday..North winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday night..North winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Thursday..North winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Thursday night..North winds 10 to 15 knots. Waves 2 to 4 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 335 Am Cst Sun Nov 19 2017
Synopsis..A strong cold front has moved through the coastal waters this morning. Wind gusts to gales are likely across most of the coastal waters. High pressure will then build in later today through Monday. Another low pressure system may begin to affect the waters by Tuesday.

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 191018
afdlix
area forecast discussion
national weather service new orleans la
418 am cst Sun nov 19 2017

Short term
The cold front moving through the area yesterday has exited the cwa
and continues south into the open gulf of mexico. Models show very
strong high pressure building into the area behind the front. This
is indicative of substantially cold air mass. Highs will struggle to
reach 60 degrees and lows will drop into the 30s and 40s for much of
the area today and Monday. The coldest period will be Monday morning
with the northern half the area likely to drop into the mid to upper
30s. Mav guidance showed a few locations dropping to freezing.

Thinking that winds will remain just strong enough during the
overnight period to slow cooling. Thus have increased the
temperature forecast by a couple degrees above the mav.

Long term
Models show a broad trough moving into the middle of the country
from the canada us border to the gulf coast Monday night. A split
flow pattern will begin developing by the afternoon. Amplification
of both troughs will occur as a reinforcing cold front passes across
the cwa. This should occur before moisture returns to the forecast
area. Therefore, have shifted any rain chances from the previous
forecast south, to just 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 and thurs.

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
Cold front has pushed south of all the TAF airports and mainlyVFR
level cloud cover will be decreasing quickly through sunrise. Much
drier air at the surface and low levels will make for excellent
visibility over the next 24 to 30 hours. Brisk north winds will
continue to gust in the 20 to 30 knots range at many airports
through the morning hours and continuing into at least the early
afternoon at kmsy, knew, kgpt and khum. 18

Marine
A strong cold front has pushed through the coastal waters. Northwest
wind speeds will maintain small craft advisory conditions for
protected waters and wind gust to gales occasional on open waters
this morning. Short duration of cold air advection will allow winds
to slowly decrease throughout the day with most flags dropping by
this evening.

High pressure will settle over the area late today into Monday and
winds and seas should begin to dissipate. The high is expected to
move to the east by Tuesday, and a prevailing southeast to east flow
of 10 to 15 knots should set up across the waters Tuesday. A surface
low may develop over the central gulf late Tuesday. Another cold
front will push through the area on Wednesday. Both features will
develop and maintain an offshore flow Wednesday to next weekend. 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 58 34 59 38 0 0 10 10
btr 61 35 61 41 0 0 10 10
asd 62 34 60 40 0 0 10 10
msy 62 44 62 50 0 0 10 10
gpt 62 37 59 41 0 0 10 10
pql 62 33 60 37 0 0 10 10

Lix watches warnings advisories
La... Small craft advisory from 9 am this morning to noon cst today
for laz068.

Gale warning until 9 am cst this morning for laz068.

Small craft advisory until 9 am cst this morning for laz070.

Gm... Small craft advisory from 9 am this morning to noon cst today
for gmz550-552-555-557.

Gale warning until 9 am cst this morning for gmz550-552-555-557-
570-572-575-577.

Small craft advisory from 9 am this morning to 3 pm cst this
afternoon for gmz570-572-575-577.

Small craft advisory until noon cst today for gmz536-538.

Small craft advisory until 9 am cst this morning for gmz530-532-
534.

Ms... None.

Gm... Small craft advisory from 9 am this morning to noon cst today
for gmz552-555-557.

Gale warning until 9 am cst this morning for gmz552-555-557-570-
572-575-577.

Small craft advisory from 9 am this morning to 3 pm cst this
afternoon for gmz572-575-577.

Small craft advisory until noon cst today for gmz538.

Small craft advisory until 9 am cst this morning for gmz532-534.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OSTF1 - Stennis Test Facility 31 mi79 min NNW 3.9 G 9.7 50°F 1019.4 hPa (+1.4)38°F

Wind History for New Canal Station, LA
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Last
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans, New Orleans Lakefront Airport, LA3 mi76 minN 24 G 3310.00 miFair and Windy54°F42°F64%1019 hPa
New Orleans, New Orleans International Airport, LA12 mi76 minN 16 G 2510.00 miFair54°F41°F62%1019.9 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA17 mi74 minN 8 G 1910.00 miA Few Clouds53°F42°F66%1019 hPa
Slidell, Slidell Airport, LA23 mi76 minN 1010.00 miFair49°F39°F69%1019.2 hPa

Wind History from NEW (wind in knots)
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Last 24hrS7S10S12SW19
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S20SW19SW17
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SW19
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SW11SW12
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SW14SW14SW15SW13N24N26
G33
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N27
G34
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1 day agoE4E4NE3NE6S8S11SW9S10S11S10S9S7S9S7S6S7S8S9S8S8S8S8S7S7
2 days agoE4E4E4NE4N5N7N7N6NE5E7E5SE3S6SE5S4S4SW4SE3SE3CalmCalmCalmSE3E4

Tide / Current Tables for New Canal USCG station, Lake Pontchartrain, Louisiana
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New Canal USCG station
Click for Map
Sun -- 05:48 AM CST     0.45 feet High Tide
Sun -- 06:28 AM CST     Sunrise
Sun -- 07:19 AM CST     Moonrise
Sun -- 05:02 PM CST     Sunset
Sun -- 06:15 PM CST     Moonset
Sun -- 07:01 PM CST     0.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.30.30.40.40.40.40.40.40.40.30.30.20.20.20.10.10.10.10.10.10.10.10.2

Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
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Paris Road Bridge
Click for Map
Sun -- 02:35 AM CST     1.18 feet High Tide
Sun -- 06:28 AM CST     Sunrise
Sun -- 07:19 AM CST     Moonrise
Sun -- 02:09 PM CST     -0.05 feet Low Tide
Sun -- 05:01 PM CST     Sunset
Sun -- 06:14 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.11.21.21.11.10.90.80.60.40.30.10-0-0.1-000.10.20.30.40.60.70.8

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 (7,2,3,4)
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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.