Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Dulac, 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 6:29AMSunset 5:07PM Saturday November 18, 2017 7:20 PM CST (01:20 UTC) Moonrise 6:28AMMoonset 5:39PM Illumination 0% Phase: New Moon; Moon at 0 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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GMZ550 Coastal Waters From Port Fourchon La To Lower Atchafalaya River La Out 20 Nm- Coastal Waters From The Southwest Pass Of The Mississippi River To Port Fourchon Louisiana Out 20 Mile- 256 Pm Cst Sat Nov 18 2017
.small craft advisory in effect until midnight cst tonight...
.gale warning in effect from midnight cst tonight through Sunday morning...
.small craft advisory in effect Sunday morning...
Tonight..Southwest winds 10 to 15 knots becoming west 25 to 30 knots late in the evening, then becoming north 25 to 35 knots after midnight. Seas 3 to 6 feet. Dominant period 5 seconds. Waves or seas building to 4 to 7 feet with occasional seas to 9 feet. Dominant period 5 seconds after midnight. Chance of showers until early morning.
Sunday..North winds 25 to 30 knots easing to 15 to 20 knots in the afternoon. Seas 5 to 8 feet with occasional seas to 9 feet. Dominant period 4 seconds. Waves or seas subsiding to 3 to 5 feet with occasional seas to 5 feet. Dominant period 4 seconds in the afternoon.
Sunday night..Northeast winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 4 seconds.
Monday..East winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 4 seconds.
Monday night..East winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers after midnight.
Tuesday..Northeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Tuesday night..Northeast winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 4 seconds. Slight chance of showers.
Wednesday..North winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 4 seconds. Waves or seas building to 4 to 7 feet with occasional seas to 8 feet. Dominant period 4 seconds in the afternoon.
Wednesday night..North winds 20 to 25 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Dominant period 4 seconds.
Thursday..North winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas to 6 feet.
Thursday night..North winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas to 6 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 256 Pm Cst Sat Nov 18 2017
Synopsis..A strong cold front is expected to sweep through the north gulf waters tonight. Strong winds are expected this afternoon through Sunday. 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 Dulac, LA
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location: 29.06, -90.81     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 182135
afdlix
area forecast discussion
national weather service new orleans la
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 62 32 61 40 0 0 0
btr 46 63 34 62 40 0 0 0
asd 48 65 35 61 50 0 0 0
msy 53 64 44 62 50 0 0 0
gpt 49 64 38 60 50 0 0 0
pql 48 65 33 61 50 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 from midnight tonight to 9 am cst Sunday for laz068.

Small craft advisory from 9 pm this evening to 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 from midnight tonight to 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 from 9 pm this evening to noon cst Sunday
for gmz536-538.

Small craft advisory from 9 pm this evening to 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 from midnight tonight to 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 from 9 pm this evening to noon cst Sunday
for gmz538.

Small craft advisory from 9 pm this evening to 9 am cst Sunday
for gmz532-534.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SPLL1 - South Timbalier Block 52, LA / CSI06 22 mi140 min WSW 14 G 16
KSPR 38 mi35 min WSW 11 75°F 70°F
LOPL1 - Louisiana Offshore Oil Port, LA 43 mi80 min 15 G 18 76°F 3 ft1013.1 hPa
KEIR 46 mi25 min W 13 77°F 72°F

Wind History for LAWMA, Amerada Pass, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from XPY (wind in knots)
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Last 24hrE6SE6
G11
E8E5E5E4E3E5E3--CalmCalmCalmSE4----CalmCalmE4E7E8E7E8E7
1 day agoE6NE5E6E5E4E3NE4E4E5E3CalmCalmCalmNE3NE3NE3E4NE3E7E7E8E75SE6
2 days agoNE9NE9NE8NE8NE8NE8NE8NE8NE7E6E7E9E8E9E9NE8NE6E9E10NE10E11E10E8E9

Tide / Current Tables for Caillou Boca, Mississippi River Delta, Louisiana
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Caillou Boca
Click for Map
Sat -- 05:42 AM CST     New Moon
Sat -- 06:28 AM CST     Moonrise
Sat -- 06:29 AM CST     Sunrise
Sat -- 08:22 AM CST     0.01 feet Low Tide
Sat -- 05:07 PM CST     Sunset
Sat -- 05:38 PM CST     Moonset
Sat -- 09:22 PM CST     1.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.210.80.60.40.30.10000.10.20.30.40.50.70.911.21.31.51.51.51.5

Tide / Current Tables for Raccoon Point, Caillou Bay, Louisiana
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Raccoon Point
Click for Map
Sat -- 05:42 AM CST     New Moon
Sat -- 06:28 AM CST     Moonrise
Sat -- 06:29 AM CST     Sunrise
Sat -- 07:07 AM CST     0.14 feet Low Tide
Sat -- 05:07 PM CST     Sunset
Sat -- 05:39 PM CST     Moonset
Sat -- 09:02 PM CST     1.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.210.70.50.30.20.10.20.20.30.50.60.811.21.31.51.71.81.91.91.91.8

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 (20,4,5,8)
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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.