Monday, September25, 2017 L-36.com


Marine Weather and Tides
Chalmette, 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 6:49AMSunset 6:52PM Monday September 25, 2017 10:53 PM CDT (03:53 UTC) Moonrise 11:42AMMoonset 10:41PM Illumination 30% 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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GMZ534 Lake Borgne- 1017 Pm Cdt Mon Sep 25 2017
Rest of tonight..East winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Tuesday..East winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Tuesday night..East winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Wednesday..East winds 5 to 10 knots becoming southeast late in the afternoon. Waves less than 1 foot. Dominant period 4 seconds.
Wednesday night..South winds near 5 knots becoming northwest after midnight. Waves 1 foot or less. Dominant period 4 seconds.
Thursday..Northeast winds 5 to 10 knots becoming east late in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Thursday night..East winds near 5 knots becoming north 10 to 15 knots in the late evening. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday..North winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday night..Northeast winds 15 to 20 knots. Waves 2 to 4 feet.
Saturday..Northeast winds 15 to 20 knots. Waves 2 to 4 feet.
Saturday night..Northeast winds 15 to 20 knots. Waves 2 to 4 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1017 Pm Cdt Mon Sep 25 2017
Synopsis..A weak trough of low pressure over the north central gulf of mexico will push west through tonight. Otherwise, weak high pressure will build over the region Tuesday and Wednesday. A cold front is expected to push through the coastal waters Thursday night into Friday.

7 Day Forecast for Marine Location Near Chalmette, LA
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location: 30, -89.93     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 260054
afdlix
area forecast discussion
national weather service new orleans la
754 pm cdt Mon sep 25 2017

Sounding discussion...

the sounding this evening has easterly winds through 700 mb and
there are still a couple spotty showers in that easterly flow.

The chance for these brief showers will continue tonight and early
tomorrow morning, mainly near coastal areas. Winds are northerly
above 500 mb from being under the western side of an upper low. Pw
is above average at 1.9 inches.

Krautmann

Prev discussion issued 409 pm cdt Mon sep 25 2017
short term...

weak upper low is over the forecast area and is triggering a few
showers and thunderstorms over the area. This upper low will
weaken and rain chances will come down tomorrow and lower to a dry
forecast on Wednesday. Temperatures will be in the upper 80s to
low 90s over the next few days. Overnight lows will be in the 70s.

Long term...

mid level ridging will be in place through Thursday. Guidance
points to a cold front... Well cool front with little to no
moisture moving through the area Friday into Friday night. Drier
and cooler air will move into the area behind the front for the
weekend. Medium range models struggle with timing location of
shortwaves beyond Sunday. Moisture return begins as high pressure
along the atlantic coast turns winds onshore. Have maintained a
blend of guidance in the long range. Temperatures should cool into
the mid 80s by the weekend and overnight lows will dip into the
60s. Little to no rain is expected at this point in time.

Aviation...

isolated showers will continue to develop over coastal areas and
south of tidal lakes this afternoon affecting kgpt, knew, kmsy
and khum. This activity will push west and develop more inland
later in the afternoon. Will carry tempo for TS most TAF sites and
use vicinity sh for kmcb and kbtr. There will be a chance of MVFR
to brief ifr conditions at a few airports due to patchy fog late
tonight early Tuesday morning. 18
marine...

a weak trough of low pressure over the north central gulf of mexico
will push west through tonight. Ridge of high pressure will build
just to the east of the coastal waters through the late Wednesday.

Winds and seas will collapse mid week with light southeast flow of
10 knots and seas of 3 feet or less during this period. A cold front
is expected to push through the coastal waters Thursday night into
Friday. Cool air advection off of brisk north winds over warm warmer
will cause waves to respond upward to 5 to 6 feet well offshore
Friday and Saturday nights. 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 69 88 70 91 10 30 10 10
btr 70 89 71 91 10 30 10 10
asd 70 88 71 91 30 30 10 10
msy 74 88 74 90 30 40 10 10
gpt 71 87 73 90 40 30 10 10
pql 69 88 70 91 40 30 10 10

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 10 mi54 min E 2.9 G 2.9 79°F 83°F1011.8 hPa (+1.0)
CARL1 12 mi54 min 80°F
SHBL1 - 8761305 - Shell Beach, LA 16 mi54 min E 7 G 8 80°F 85°F1012 hPa (+1.0)
FREL1 27 mi54 min ENE 8.9 G 11 81°F 1010.8 hPa (+1.0)75°F
BYGL1 - 8762482 - Bayou Gauche, LA 30 mi54 min E 1 G 1.9 77°F 85°F1011.8 hPa (+0.9)
OSTF1 - Stennis Test Facility 30 mi64 min Calm G 1.9 73°F 1012.7 hPa (+0.8)72°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 39 mi54 min NE 9.9 G 12 76°F 83°F1012.5 hPa (+1.3)

Wind History for New Canal Station, LA
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NE15

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans, New Orleans Lakefront Airport, LA6 mi61 minE 710.00 miMostly Cloudy81°F73°F77%1011.3 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA13 mi59 minN 010.00 miPartly Cloudy74°F73°F97%1011.7 hPa
New Orleans, New Orleans International Airport, LA17 mi61 minE 510.00 miPartly Cloudy79°F72°F79%1012 hPa

Wind History from NEW (wind in knots)
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Last 24hrE11E9E8E8E8NE10NE9NE11NE14NE12NE12NE10NE12NE12NE10NE10E11E9SE7E8E7E5SE3E7
1 day ago----E6E11E9NE11NE10NE11NE14NE15E10E8E10E9E13E12E15E13E11E11E9E10E13E11
2 days ago------------------------------------------------

Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
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Paris Road Bridge
Click for Map
Mon -- 06:29 AM CDT     1.27 feet High Tide
Mon -- 06:49 AM CDT     Sunrise
Mon -- 11:41 AM CDT     Moonrise
Mon -- 06:12 PM CDT     0.42 feet Low Tide
Mon -- 06:52 PM CDT     Sunset
Mon -- 10:41 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.911.11.21.21.31.31.21.21.110.90.70.60.50.50.40.40.40.50.50.60.7

Tide / Current Tables for Chef Menteur, Chef Menteur Pass, Louisiana
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Chef Menteur
Click for Map
Mon -- 06:05 AM CDT     1.36 feet High Tide
Mon -- 06:49 AM CDT     Sunrise
Mon -- 11:41 AM CDT     Moonrise
Mon -- 05:26 PM CDT     0.53 feet Low Tide
Mon -- 06:51 PM CDT     Sunset
Mon -- 10:40 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
111.11.21.31.31.41.31.31.21.110.90.80.70.60.60.50.50.60.60.70.70.8

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 (23,6,7,8)
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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.