Tuesday, August21, 2018 L-36.com


Marine Weather and Tides
Metairie, LA

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:30AMSunset 7:36PM Tuesday August 21, 2018 9:02 PM CDT (02:02 UTC) Moonrise 3:28PMMoonset 1:19AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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- 331 Pm Cdt Tue Aug 21 2018
Tonight..West winds 10 to 15 knots becoming north 5 to 10 knots after midnight. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday..North winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Wednesday night and Thursday..Northeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Thursday night..East winds near 5 knots becoming west after midnight. Waves less than 1 foot. Dominant period 4 seconds.
Friday..North winds near 5 knots becoming southeast in the afternoon. Waves less than 1 foot. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Friday night..Southeast winds 5 to 10 knots becoming east after midnight. Waves 1 foot or less. Dominant period 4 seconds.
Saturday through Sunday..East winds 5 to 10 knots. Waves 1 foot or less. Chance of showers and Thunderstorms.
Sunday night..Southeast 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- 331 Pm Cdt Tue Aug 21 2018
Synopsis..A cold front will push into the coastal waters tonight. High pressure will build in from the north on Wednesday and remain in place through the end of the week.


7 Day Forecast for Marine Location Near Metairie, LA
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location: 30.03, -90.11     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 220055
afdlix
area forecast discussion
national weather service new orleans la
755 pm cdt Tue aug 21 2018

Sounding discussion
The upper air release this evening was routine with no problems
encountered. The 00z sounding depicted an unstable and moist
atmosphere, but one in which substantial drying had taken place
in the mid levels when compared to the sounding from this
morning. The precipitable water value was 1.94 inches. The southwest
winds that prevailed near the surface veered to the west and then
northwest with height through the lower levels. Northwest winds
were observed in the mid levels while light and variable winds
prevailed throughout the upper levels. 11

Prev discussion issued 715 pm cdt Tue aug 21 2018
aviation...

a few showers are still ongoing across the forecast area, but
generallyVFR conditions will prevail through the TAF period. A
front will push through the forecast area tonight with a wind
shift expected sometime after 3z and progress throughout the area
through the late night and early morning hours. A few showers are
possible as the front moves through. ExpectVFR conditions to
prevail on Wednesday with a north wind. 13 mh
prev discussion... Issued 327 pm cdt Tue aug 21 2018
discussion...

a rather significant change to the local weather is beginning to
take place across the area. The short version is: out with muggy
& daily storms and in the drier air & rain-free skies. The more
detailed version: in the upper levels, a trough axis oriented from
the great lakes to the florida panhandle while a ridge is
centered near the permian basin of west texas. Down at the
surface, a weak frontal boundary associated with the upper trough
is located along a jackson to natchez to toledo bend line. It has
been slow to progress southward today but thinking that the
combination of loss of day time heating and reinforcement of the
western side of the upper trough will send the boundary into and
through most of the CWA tonight. Meso and global models continue
to be aggressive with convection development along and ahead of
the boundary. It hasn't been happening today and really don't
think much ever will except in la parishes south of new orleans.

Just too much mid level dry in capping development. Therefore,
will only carry slight chance pops in those coastal locations.

Drier air will be pushing into the CWA from north to south beginning
late this evening through Wednesday as the trough to the east
continues to dig south. The transition from near 80 td's to 70
will be much more gradual south of i-10 as coastal waters are
still extremely warm. Either way, should be a couple days of clear
skies and nighttime lows ranging from upper 60s in northern
portions of the forecast area and lower 70s for those in the
southern half. The CWA will not see a lowering of high temps
however. In fact, low dewpoints will allow even more warming than
currently forecast.

The pleasant weather will be short-lived however, with moisture and
lower rain chances beginning to return Friday. The good news is that
it should be gradual with barely 20% Friday, 20-30% Saturday and
40%+ Sunday as upper ridging aloft weakens. Early next week will
likely be a return to more typical wet summer pattern the bermuda
ridge strengthens. This will open the CWA up to deeper gulf moisture
and minimal subsidence aloft to inhibit convective development.

Meffer
marine... Weak front will continue to slowly work into the
coastal waters tonight. Not really expecting any impacts from this
front. It will stall over the coastal waters and again looks like
light offshore winds could develop over the inner waters tomorrow
and Thursday but by Friday winds the front should mix out and winds
will slowly veer around to easterly and then back to onshore flow by
Friday night. Cab
decision support...

dss code: green.

Deployed: none.

Activation: none.

Activities: none.

Preliminary point temps pops
Mcb 68 90 68 90 10 0 10 10
btr 71 92 70 91 20 0 10 10
asd 72 92 70 91 30 0 10 10
msy 75 92 74 91 30 10 10 10
gpt 73 91 71 90 30 0 10 10
pql 72 92 69 92 30 0 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 0 mi32 min SW 8 G 14 87°F 88°F1016.7 hPa
CARL1 7 mi32 min 86°F
FREL1 17 mi32 min SW 4.1 G 8 85°F 1015.9 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 23 mi32 min WSW 2.9 G 5.1 83°F 88°F1017.4 hPa
SHBL1 - 8761305 - Shell Beach, LA 26 mi32 min SSW 8.9 G 9.9 83°F 88°F1017.1 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 46 mi32 min SW 7 G 8.9 84°F 87°F1016.8 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, LA4 mi69 minS 710.00 miMostly Cloudy88°F75°F68%1016.3 hPa
New Orleans, New Orleans International Airport, LA8 mi69 minSW 610.00 miMostly Cloudy87°F80°F80%1017.2 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA15 mi67 minWSW 510.00 miMostly Cloudy88°F78°F73%1016.8 hPa

Wind History from MSY (wind in knots)
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Last 24hrS8S6S5SW5--SW5SW4S5S5W4SW5W6W5W8W14NW11W8W106N4SW5W5SW5SW6
1 day agoS5S5S5S5S6S6S5S4S3S3S4S6S7SW7S7SW10SW10SW23
G33
SE4SW8SW8S7S8S5
2 days agoSE3CalmS5S4S5S8SW5SW3S3S3S3SW4SW6SW8SW6S12SE5S4S10S8SW7S4W5S7

Tide / Current Tables for New Canal USCG station, Lake Pontchartrain, Louisiana
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New Canal USCG station
Click for Map
Tue -- 02:18 AM CDT     Moonset
Tue -- 03:30 AM CDT     0.08 feet Low Tide
Tue -- 06:31 AM CDT     Sunrise
Tue -- 04:27 PM CDT     0.42 feet High Tide
Tue -- 04:27 PM CDT     Moonrise
Tue -- 07:35 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.10.10.10.10.10.10.10.20.20.30.30.30.40.40.40.40.40.40.40.40.30.30.2

Tide / Current Tables for Michoud Substation, ICWW, Louisiana
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Michoud Substation
Click for Map
Tue -- 02:18 AM CDT     Moonset
Tue -- 06:30 AM CDT     Sunrise
Tue -- 12:04 PM CDT     1.60 feet High Tide
Tue -- 04:26 PM CDT     Moonrise
Tue -- 07:34 PM CDT     Sunset
Tue -- 11:07 PM CDT     0.09 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.20.40.50.70.811.21.31.41.51.61.61.61.51.41.210.80.60.40.20.10.1

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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (22,6,7,8)
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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.