Sunday, November19, 2017 L-36.com


Marine Weather and Tides
Lafitte, 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 2:50 AM CST (08:50 UTC) Moonrise 7:19AMMoonset 6:15PM Illumination 0% 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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GMZ538 Chandeleur Sound-breton Sound- 955 Pm Cst Sat Nov 18 2017
.small craft advisory in effect through Sunday morning...
Rest of tonight..West winds 20 to 25 knots becoming north 20 to 30 knots with higher gusts after midnight. Waves 3 to 6 feet with occasional waves to 8 feet. Dominant period 4 seconds. Chance of showers late in the evening.
Sunday..North winds 20 to 25 knots easing to 15 to 20 knots in the afternoon. Waves 3 to 6 feet with occasional waves to 8 feet. Dominant period 4 seconds. Waves subsiding to 3 to 5 feet in the afternoon. Dominant period 4 seconds in the afternoon.
Sunday night..Northeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Monday..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Monday night..East winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Tuesday..Northeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers.
Tuesday night..Northeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Slight chance of showers.
Wednesday..North winds 15 to 20 knots. Waves 3 to 5 feet with occasional waves to 6 feet. Dominant period 4 seconds.
Wednesday night..North winds 15 to 20 knots. Waves 3 to 5 feet with occasional waves to 6 feet. Dominant period 4 seconds.
Thursday..North winds 15 to 20 knots. Waves 3 to 5 feet with occasional waves to 6 feet.
Thursday night..North winds 15 to 20 knots. Waves 3 to 5 feet with occasional waves to 6 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 955 Pm Cst Sat Nov 18 2017
Synopsis..A strong cold front is expected to sweep through the north gulf waters tonight with gales expected across most of the coastal waters. High pressure will then build in for Sunday and Monday. Another low pressure system may begin to affect the waters by Tuesday.

7 Day Forecast for Marine Location Near Lafitte, LA
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location: 29.54, -90.06     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 190533
afdlix
area forecast discussion
national weather service new orleans la
1133 pm cst Sat nov 18 2017

Aviation
Cold front has pushed south of all the TAF airports which has
ended the threat of showers, and mainlyVFR level cloud cover will
be decreasing quickly over the next few hours. Also, much drier
air at the surface and low levels will make for excellent
visibility over the next 24 to 30 hours. The only element of
concern is the brisk north winds which will continue to gust in
the 20 to 30 knots range at many airports through the night into
morning hours on Sunday, and continuing into at least the early
afternoon at kmsy, knew, kgpt and khum. 22 td

Prev discussion issued 335 pm cst Sat nov 18 2017
short term...

our long awaited cold front is pushing through northern louisiana,
as dewpoints in shv have falling into the mid 40s. Front will
continue to move towards our area and push through rather quickly,
entering the CWA around 6pm this evening and moving into the
coastal waters by midnight. Rain is expected but not much in the
way of rainfall totals, with most areas seeing less than a tenth
of an inch. Winds will pick up after the front passes but again,
the increase in winds will not last long over land.

Tomorrow, temperatures will warm into to the lower 60s in most
locations. Monday morning will see the coldest temperatures in
the wake of the front with mid 30s across the northern parts of
the area and mid 40s on the southshore.

Long term...

still some model variation in the handling of the next system but
overall, rain chances look to be lower and have adjusted the
forecast to account for that.

Taking a peak to thanksgiving day, looks to be a fairly pleasant
day in our area and if anything a tad on the chilly side with
daytime temperatures in the upper 50s.

Aviation...

main concerns will be with frontal passage this evening through all
terminal locations. Timing now appears to be kbtr 02z, kmcb 03z,
khdc 0415z, khum kmsy kasd 05-0530z, kgpt 07z, kpql 0730z. Some
temporary low level wind shear considerations with frontal passage
but not enough to warrant inclusion. Radar showing some shallow
showers near khdc and kbtr at this time with some spotty coverage
expected in pre-frontal zone. Otherwise,VFR ceilings and
visibilities expected to prevail all terminals next 24-30 hours.

Marine...

strong cold front continue to advance steadily southeast 24 knots
into central louisiana this afternoon. It times out off the mouth of
the ms river and east of the the ms sound by 07z. Strong NW winds
are expected to develop rapidly with frontal passage with frequent
gale force gusts overnight into Sunday morning before moderating
Sunday afternoon. Winds slowly veer through easterly Monday, before
a second re-enforcing front Tuesday to bring another increase in
north winds into Wednesday.

Decision support...

dss code: blue.

Deployed: none.

Activation: none.

Activities: gale warning
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 43 61 32 61 40 0 0 0
btr 46 62 34 62 40 0 0 0
asd 48 64 35 61 50 0 0 0
msy 53 63 44 62 50 0 0 0
gpt 49 63 38 60 50 0 0 0
pql 48 64 33 61 70 0 0 0

Lix watches warnings advisories
La... Small craft advisory until midnight cst tonight for laz068.

Small craft advisory from 9 am to noon cst Sunday for laz068.

Gale warning until 9 am cst Sunday for laz068.

Small craft advisory until 9 am cst Sunday for laz070.

Gm... Small craft advisory until midnight cst tonight for gmz550-552-
555-557-570-572-575-577.

Small craft advisory from 9 am to noon cst Sunday for gmz550-552-
555-557.

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

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

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

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

Ms... None.

Gm... Small craft advisory until midnight cst tonight for gmz552-555-
557-570-572-575-577.

Small craft advisory from 9 am to noon cst Sunday for gmz552-555-
557.

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

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

Small craft advisory until noon cst Sunday for gmz538.

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



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KDLP 40 mi35 min N 31 64°F 55°F
LOPL1 - Louisiana Offshore Oil Port, LA 45 mi50 min N 22 G 33 64°F 5 ft1015.1 hPa (+2.0)

Wind History for Grand Isle, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galliano, South Lafourche Airport, LA13 mi75 minN 21 G 2610.00 miMostly Cloudy and Breezy59°F46°F64%1016.3 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA20 mi1.9 hrsN 11 G 2310.00 miMostly Cloudy61°F51°F70%1016.4 hPa

Wind History from GAO (wind in knots)
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Last 24hrS5S5S6S7S7S9SW14
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SW12SW9SW8SW9SW8SW8SW7N14
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1 day agoCalmCalmCalmCalmCalmCalmE3SE3E6S6S5S6SE7SE5SE3CalmSE3SE4SE3SE3SE3S3S4S4
2 days agoCalmCalmCalmCalmCalmCalmSE4E5CalmCalmCalmNE3CalmSE3CalmSE3SE3CalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Manilla, Mississippi River Delta, Louisiana
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Manilla
Click for Map
Sun -- 06:27 AM CST     Sunrise
Sun -- 07:18 AM CST     Moonrise
Sun -- 11:24 AM CST     -0.05 feet Low Tide
Sun -- 05:02 PM CST     Sunset
Sun -- 06:15 PM CST     Moonset
Sun -- 11:46 PM CST     1.09 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.110.90.80.70.50.40.30.10-0-0-000.10.20.30.40.50.60.80.911.1

Tide / Current Tables for Independence Island, Mississippi River Delta, Louisiana
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Independence Island
Click for Map
Sun -- 06:26 AM CST     Sunrise
Sun -- 07:18 AM CST     Moonrise
Sun -- 10:10 AM CST     -0.04 feet Low Tide
Sun -- 05:03 PM CST     Sunset
Sun -- 06:15 PM CST     Moonset
Sun -- 11:43 PM CST     0.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.90.80.70.50.40.30.10-0-0-000.10.10.20.30.40.50.60.70.90.91

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 (3,6,7,8)
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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.