Tuesday, February20, 2018 L-36.com


Marine Weather and Tides
Lacombe, 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 6:32AMSunset 5:53PM Tuesday February 20, 2018 9:44 AM CST (15:44 UTC) Moonrise 9:36AMMoonset 10:33PM Illumination 28% 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- 922 Am Cst Tue Feb 20 2018
Rest of today..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
Tonight..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers.
Wednesday..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and slight chance of Thunderstorms.
Wednesday night..Southeast winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Thursday..Southeast winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers.
Thursday night..Southeast winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday..Southeast winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and slight chance of Thunderstorms.
Friday night..Southeast winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Saturday..South winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Saturday night..Southwest winds near 10 knots. Waves 1 to 2 feet. Chance of showers.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 922 Am Cst Tue Feb 20 2018
Synopsis..A cold front will begin moving toward the gulf coast this afternoon. This front will stall well north of the coast Wednesday night then move back northwest Thursday. Another cold front will move to the coast by the weekend.

7 Day Forecast for Marine Location Near Lacombe, LA
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location: 30.25, -90.04     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 201005
afdlix
area forecast discussion
national weather service new orleans la
405 am cst Tue feb 20 2018

Short term
An upper level ridge is currently centered north of the bahamas and
will remain there through most of this week. The west of this high
pressure extends into the western gulf of mexico. This extent of
coverage will change based upon intrusion of an upper trough to the
north. The main trough axis is still west of the rockie mountains. A
shortwave tracking through the trough will bring a cold front into
northern louisiana Wednesday but likely stall it there do to the
weakness and northern track of the shortwave.

Rain chances will increase slightly today from yesterday as low
level moisture remains high with dewpoints in the upper 60s and
daytime heating increases buoyancy. Strong cap at the top of the
boundary layer will limit development to just showers but 20 to 40%
coverage appears likely across the cwa. Those rain chances will
increase quite a bit on Wednesday as the front mentioned above moves
into northern la. There will will be a gradient in pops with higher
rain chances in northwestern zones of the CWA compared to
southeastern ones.

A slight retreat of the stalled front to north is likely on Thursday
as the shortwave races northeast and the ridge builds in from the
south. Rain chances should fall back into the 10-40% range as this
takes place. It will be a short reprieve from higher coverage as
another weak shortwave enhances shower and thunderstorm coverage
again on Friday. 80+ degree high temps will persist through this
part of the forecast period as 500mb heights remain 'high'.

Long term
The main upper trough axis west of the rockies will finally lift
northeast and race across the midsection of the country this
weekend. This will send a front through the forecast area early
Sunday morning. A line of showers and thunderstorms will likely
accompany this boundary as it moves through. As the trough exits the
east coast Sunday, it will shove the upper ridge near the bahamas
into the southern gulf of mexico. This will lead to either an
extended wet period or dry period depending on how far south or
north the center ends up.

Meffer

Aviation
Ceilings will be mainly at bkn020-030 with some tempo ceilings at
bkn008 for those terminals down wind of cooler water bodies and the
mississippi river. Vis restrictions should not be an issue this
morning provided that the wind does not ease. Any low ceilings will
break up by mid morning leaving all sites with bkn030-050. Same
conditions expected again tonight with a few terminals having
slightly reduced vis at locations with low wind speeds.

Marine
Winds will remain in the 15-20 kt range for most coastal waters and
this should keep fog from forming and instead promote a low stratus
deck from time to time along with a shower or two. The next cold
front will move toward the coast and stall well north of the coastal
waters Wednesday before moving back to the northwest, then stalling
once again over the central plains states. This will simply help
maintain the onshore flow through the week. The front will finally
push into the waters by Sunday.

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 81 68 82 65 40 20 70 60
btr 84 69 82 67 30 10 50 30
asd 82 67 82 67 30 20 40 20
msy 82 69 83 68 30 10 40 20
gpt 77 67 78 66 40 30 40 20
pql 80 67 80 67 30 30 40 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 16 mi45 min SSE 6 G 12 75°F 65°F1021.8 hPa (+1.8)
CARL1 22 mi45 min 46°F
FREL1 23 mi45 min SSE 12 G 14 74°F 1020.9 hPa (+1.9)69°F
SHBL1 - 8761305 - Shell Beach, LA 33 mi45 min ESE 15 G 19 74°F 74°F1022.1 hPa (+1.4)
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 38 mi45 min SE 15 G 19 70°F 71°F1022.9 hPa (+1.8)
BYGL1 - 8762482 - Bayou Gauche, LA 38 mi45 min SE 12 G 14 76°F 71°F1021.6 hPa (+1.7)

Wind History for New Canal Station, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Slidell, Slidell Airport, LA14 mi52 minSE 12 G 1810.00 miOvercast74°F69°F85%1022 hPa
New Orleans, New Orleans Lakefront Airport, LA15 mi52 minSE 127.00 miOvercast76°F69°F79%1021.3 hPa
New Orleans, New Orleans International Airport, LA22 mi52 minSE 1310.00 miMostly Cloudy77°F71°F82%1021.9 hPa

Wind History from ASD (wind in knots)
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Last 24hrSE8S13S14
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SE7SE8SE5SE7SE7SE5SE6SE3E33SE6SE8SE11
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1 day agoSE7SW6S75S4S9S7SE7SE5SE6SE6SE5SE4SE6SE5S6SE4CalmCalmCalmCalmCalmSE3SE5
2 days agoS10
G16
SW10SW8SW7SW86W7--SW5CalmS3S3S4CalmCalmCalmN3NW3N4N5N3CalmE4SE5

Tide / Current Tables for Tchefuncta River, Lake Pontchartrain, Louisiana
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Tchefuncta River
Click for Map
Tue -- 12:23 AM CST     0.10 feet High Tide
Tue -- 06:06 AM CST     0.06 feet Low Tide
Tue -- 06:36 AM CST     Sunrise
Tue -- 09:36 AM CST     Moonrise
Tue -- 11:13 AM CST     0.11 feet High Tide
Tue -- 05:46 PM CST     0.05 feet Low Tide
Tue -- 05:52 PM CST     Sunset
Tue -- 10:34 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.2

Tide / Current Tables for Bayou BonFouca, Route 433, Louisiana
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Bayou BonFouca
Click for Map
Tue -- 05:16 AM CST     0.05 feet Low Tide
Tue -- 06:34 AM CST     Sunrise
Tue -- 09:34 AM CST     Moonrise
Tue -- 10:49 AM CST     0.10 feet High Tide
Tue -- 04:56 PM CST     0.05 feet Low Tide
Tue -- 05:51 PM CST     Sunset
Tue -- 10:32 PM CST     Moonset
Tue -- 11:42 PM CST     0.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.100.10.10.10.10.10.1

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 (10,2,3,4)
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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.