Monday, June26, 2017 L-36.com


Marine Weather and Tides
Metairie, 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 6:00AMSunset 8:06PM Monday June 26, 2017 10:45 PM CDT (03:45 UTC) Moonrise 7:48AMMoonset 9:33PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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- 941 Pm Cdt Mon Jun 26 2017
Rest of tonight..Southeast winds near 5 knots becoming northeast in the late evening. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers and Thunderstorms after midnight.
Tuesday..Northeast winds 5 to 10 knots becoming southeast late in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday night..South winds near 5 knots becoming east after midnight. Waves less than 1 foot. Dominant period 4 seconds.
Wednesday..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Waves or seas building to 1 to 3 feet. Dominant period 4 seconds in the afternoon. Showers and Thunderstorms likely.
Wednesday night..Southeast winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Thursday..Southeast winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Showers and Thunderstorms likely.
Thursday night..South winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Friday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Friday night..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Saturday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Saturday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 941 Pm Cdt Mon Jun 26 2017
Synopsis..A stationary front along the coast will maintain Thunderstorms overnight. The front is expected to retreat northa S a warm front late Tuesday with onshore flow becoming established across the coastal waters for the remainder of the week and into the weekend.

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 270316 aaa
afdlix
area forecast discussion... Updated
national weather service new orleans la
1016 pm cdt Mon jun 26 2017

Update
Brought pops and weather grids in line with current trends along
the immediate coast and near shore waters. Went with ruc13 model
hourly pops which does show 90% or better where activity is
currently, then a tight gradient to near 0% closer to the new
orleans metro area. There is some indication of potential
convection forming overnight over lake pontchartrain which is
plausible in this environment. This update mainly affects the
web-based areal point-n-click forecasts, which may or may not be
fully functional at this time. Major point forecast locations are
unaffected aside from perhaps the houma-thibodaux area. Will not
send a zfp as the gradient across the lower parishes will grab the
higher values and would be unrepresentative for some areas such as
upper jefferson and the adjacent river parishes. 24 rr

Aviation
Most terminals should remainVFR despite large anvil blow-off from
ongoing convection along the la coast. Khum has not reported an
observation since 26 2347z, and possibly may be transmitting with
an incorrect date. Therefore will show no amdt sked with the 06z
taf issuance. 24 rr

Prev discussion issued 738 pm cdt Mon jun 26 2017
sounding discussion...

the 00z sounding shows a dry and very stable airmass in place.

Precipitable water values have continued to decline on the back of
a persistent north-northeast flow in the low to mid-levels of the
atmosphere. Pw values dropped a quarter inch since the 12z
sounding, and the mean mixing ratio fell from 13.2 to 11.2g kg.

This drying of the mid-level atmosphere has resulting in warmer
temperatures between 850 and 700mb, and that warming has reduced
overall instability. This is most evident by the very weak 5.6c km
lapse rate observed in the 850-500mb layer, lack of cape, and very
high convective temperature of 100f. 32

Preliminary point temps pops
Mcb 68 88 69 87 0 0 0 50
btr 70 88 71 87 0 0 10 60
asd 69 89 72 86 20 0 0 60
msy 73 86 74 84 20 20 10 60
gpt 71 86 73 85 20 10 0 50
pql 68 89 71 87 10 10 0 30

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 mi46 min SE 1.9 G 4.1 81°F 83°F1017.2 hPa (+1.1)
CARL1 7 mi46 min 81°F
FREL1 17 mi46 min SSW 2.9 G 4.1 79°F 1016.3 hPa72°F
BYGL1 - 8762482 - Bayou Gauche, LA 23 mi46 min SE 1 G 1.9 80°F 85°F1017.4 hPa (+0.9)
SHBL1 - 8761305 - Shell Beach, LA 26 mi46 min SE 4.1 G 6 80°F 87°F1017.2 hPa (+0.8)
OSTF1 - Stennis Test Facility 35 mi56 min Calm G 0 75°F 1017.9 hPa (+0.8)71°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 46 mi46 min WNW 1.9 G 2.9 79°F 83°F1017.2 hPa (+0.8)

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 mi53 minSSE 510.00 miFair81°F71°F72%1016.7 hPa
New Orleans, New Orleans International Airport, LA8 mi53 minSE 510.00 miPartly Cloudy80°F71°F74%1017.5 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA15 mi51 minN 08.00 miFair0°F0°F%1017 hPa

Wind History from MSY (wind in knots)
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Last 24hrNE6NE8NE6NE6E7E5NE5NE5E5E8NE7NE8NE9NE6NE8NE10NE8NE5NE10E10E7S5SE7SE5
1 day agoCalmSE3N3CalmCalmCalmCalmCalmCalmNE5NE5NE6N8NE8NE7N6
G15
NE7NE9N5NE5S4S5CalmCalm
2 days agoS6S5S5S7SW4SW4W3CalmCalm5SW7W3SW4NW6NW5SE14
G22
S6W7W9N4CalmSW5N3Calm

Tide / Current Tables for New Canal USCG station, Lake Pontchartrain, Louisiana
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New Canal USCG station
Click for Map
Mon -- 06:01 AM CDT     Sunrise
Mon -- 08:48 AM CDT     Moonrise
Mon -- 08:50 AM CDT     0.02 feet Low Tide
Mon -- 08:05 PM CDT     Sunset
Mon -- 09:42 PM CDT     0.47 feet High Tide
Mon -- 10:32 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.30.30.20.20.10.10.10000.10.10.10.20.20.30.40.40.40.50.50.50.5

Tide / Current Tables for Michoud Substation, ICWW, Louisiana
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Michoud Substation
Click for Map
Mon -- 03:14 AM CDT     -0.48 feet Low Tide
Mon -- 06:00 AM CDT     Sunrise
Mon -- 08:47 AM CDT     Moonrise
Mon -- 05:05 PM CDT     1.65 feet High Tide
Mon -- 08:04 PM CDT     Sunset
Mon -- 10:32 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.3-0.4-0.5-0.5-0.4-0.2-0.10.10.30.60.811.21.41.51.61.71.61.51.31.10.80.5

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.