Saturday, July22, 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 6:16AMSunset 8:02PM Saturday July 22, 2017 5:54 AM CDT (10:54 UTC) Moonrise 4:27AMMoonset 6:28PM Illumination 2% Phase: Waning Crescent; Moon at 28 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- 401 Am Cdt Sat Jul 22 2017
Today..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Tonight..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Sunday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Sunday night..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Monday..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Monday night..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Tuesday..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 5 seconds. Slight chance of showers and Thunderstorms.
Tuesday night..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds.
Wednesday..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Wednesday night..Northwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 401 Am Cdt Sat Jul 22 2017
Synopsis..An upper low will move through the northern gulf today. Surface high pressure will remain over the area through next week.

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 220900
afdlix
area forecast discussion
national weather service new orleans la
400 am cdt Sat jul 22 2017

Short term
Upper low will keep the area under enough sh TS and cloud cover
to keep heat index values low enough to keep the oppressive heat
down. But this will change as we approach mid week. The stacked
high from the sfc up to 700mb will begin to take shape today over
the florida straits and move into the gulf tonight and Sunday.

This feature can be observed best at the 850mb level.

A strong short wave, over southern canada, embedded in the larger
upper trough is moving southeast this morning. This feature will
cause the upper trough over the midwest to sharpen and dig
southeast developing a weak sfc trough axis oriented nw-se
adjacent to our area possibly as early as Monday. The gulf sfc
high will settle up against this weak stationary trough causing a
slightly tighter pressure gradient to exist helping to elevate
wind speeds just a bit while producing daily sh TS over locations
just northeast of the area. A few of these are expected to
develop into the area as well. This may be enough wind to
ventilate the column keeping heat index values from getting out of
control. But the battle grounds between teh high and the trough
will set up a fairly steep precip and temp gradient starting
Monday or Tuesday and lasting through the week. If this boundary
meanders into the area one or two days, the potential for a severe
thunderstorm will be heightened. With heating as it is, strong or
even a severe thunderstorm could occur any given day. The main
hazards expected with anything capable of developing into a severe
thunderstorm would be very heavy rain, wind, hail and plenty of
lightning.

Aviation
With the exception of one or two locations observing br or fg this
morning,VFR conditions outside sh TS should be the rule through
Sunday morning. An early start to the sh TS activity will show
today and activity should develop and decay throughout the day.

Some of the stronger thunderstorms could produce winds up to 40mph
and hail.

Marine
A sfc high will move into the northern gulf and settle up against
a weak stationary trough causing a slightly tighter pressure
gradient to exist helping to elevate wind speeds to 10-15kt. This
should remain through much of the week. An abundance of sh ts
activity is expected but will be found mostly during morning
hours. Some of these could become strong with winds up to 40kt
possible.

Decision support
Dss code: green.

Deployed: none.

Activation: none.

Activities: monitoring convective trends.

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 90 73 90 74 40 20 60 30
btr 90 74 90 76 50 20 60 20
asd 91 76 91 77 40 20 60 30
msy 90 77 89 78 40 20 60 20
gpt 89 78 88 78 40 20 50 30
pql 90 76 89 77 40 30 50 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
KXPY 33 mi40 min SW 4.1 84°F 75°F
EINL1 37 mi55 min ENE 2.9 G 2.9 82°F 86°F1014.4 hPa (-0.9)74°F
KSPR 38 mi40 min WSW 4.1 84°F 75°F
AMRL1 - 8764227 - Amerada Pass, LA 39 mi55 min Calm G 0 77°F 85°F1014.9 hPa (-0.6)
LOPL1 - Louisiana Offshore Oil Port, LA 43 mi105 min 8.9 G 12 84°F 1 ft1015.1 hPa
KEIR 46 mi40 min SW 8 84°F 75°F
GISL1 - 8761724 - Grand Isle, LA 47 mi55 min W 5.1 G 7 84°F 88°F1015.6 hPa (-0.0)

Wind History for LAWMA, Amerada Pass, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA33 mi60 minSSW 79.00 miA Few Clouds84°F75°F74%1014.9 hPa

Wind History from XPY (wind in knots)
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Last 24hrNW4
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N5N4N5N8NE5NE6E7SE85S9SW5
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SW5SW5CalmCalmCalmS3CalmCalmSW7SW5SW5SW4
1 day agoCalmN5N3NW64N454E6SE5S6SE6S8S7SW5SW5SW4SW4SW4CalmSW4W3W5NW4
2 days ago4N9NW4W3NW6NW7W8W5E6CalmSW4SW4W4CalmCalmCalmCalmCalmN3CalmCalmCalmN3N4

Tide / Current Tables for Caillou Boca, Mississippi River Delta, Louisiana
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Caillou Boca
Click for Map
Sat -- 05:26 AM CDT     Moonrise
Sat -- 06:18 AM CDT     Sunrise
Sat -- 09:28 AM CDT     2.05 feet High Tide
Sat -- 07:27 PM CDT     Moonset
Sat -- 08:00 PM CDT     Sunset
Sat -- 09:45 PM CDT     -0.24 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
00.20.50.711.31.51.81.92221.81.61.310.70.40.2-0-0.2-0.2-0.2-0.2

Tide / Current Tables for Raccoon Point, Caillou Bay, Louisiana
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Raccoon Point
Click for Map
Sat -- 05:27 AM CDT     Moonrise
Sat -- 06:19 AM CDT     Sunrise
Sat -- 09:23 AM CDT     2.31 feet High Tide
Sat -- 07:28 PM CDT     Moonset
Sat -- 08:01 PM CDT     Sunset
Sat -- 08:11 PM CDT     -0.41 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.60.91.21.41.71.92.12.22.32.32.221.71.30.90.50.1-0.2-0.3-0.4-0.4-0.3-0.1

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 (6,6,7,8)
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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.