Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Dulac, LA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:56AMSunset 7:19PM Sunday March 26, 2017 1:44 PM CDT (18:44 UTC) Moonrise 5:07AMMoonset 5:03PM Illumination 1% Phase: Waning Crescent; Moon at 29 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- 1006 Am Cdt Sun Mar 26 2017
Rest of today..South winds 5 to 10 knots. Seas 3 to 5 feet. Dominant period 7 seconds.
Tonight..South winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 7 seconds.
Monday..South winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 5 seconds.
Monday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds.
Tuesday..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds.
Tuesday night..Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds.
Wednesday..Southeast winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 5 seconds.
Wednesday night..Southeast winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 6 seconds.
Thursday..South winds 15 to 20 knots. Seas 3 to 6 feet with occasional seas to 8 feet. Chance of showers and Thunderstorms.
Thursday night..Southwest winds 15 to 20 knots. Seas 3 to 6 feet with occasional seas to 8 feet. Chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1006 Am Cdt Sun Mar 26 2017
Synopsis..High pressure centered across the eastern gulf will overspread the area today and remain in control of the coastal waters through Wednesday. By Thursday, another area of low pressure will affect the coastal waters.

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 261320
afdlix
area forecast discussion
national weather service new orleans la
820 am cdt Sun mar 26 2017

Sounding discussion...

aided by the the remaining moisture from the rain yesterday
conditions are saturated at the surface under a radiation
inversion in the first few hundred feet. Therefore patchy fog has
developed this morning. Winds though are relatively strong just
above, at 20 kts by 950 mb, so fog is expected to quickly mix out
with daytime heating. Southwest flow is in place through low
levels and becomes more westerly above 700 mb. There are a couple
elevated inversions around 850 and 700 mb.

Krautmann

Prev discussion /issued 334 am cdt Sun mar 26 2017/
discussion...

a series of weather systems will impact the region over the next
week bringing occasional bouts of convection to the forecast
area. However, today the area will be located between systems
with warm and tranquil conditions expected after some morning fog
and low clouds burn off.

Showers and thunderstorms will return to the forecast area on
Monday as a short wave trough moving into the plains today
traverses the lower and mid mississippi valley on Monday. This
system will yield isolated to scattered convection during the day
and evening with the best chances across northern sections of the
p/cwa. The potential for any severe weather is expected to remain
north of the area where the best forcing and stronger wind fields
will reside. After this system moves east of the region, a weak
cold front will approach from the north, but will not push through
the forecast area. On Tuesday, lingering moisture with a weak
frontal boundary near or just the north of the area and perhaps a
passing weak disturbance aloft may result in a few showers and
thunderstorms with the daytime heating.

Another warm and dry day is anticipated for Wednesday with upper
level ridging over the southeast conus. This will be short lived,
however, as a potent upper low/trough moving out of the southwest
u.S. And then across the southern plains and texas approaches
Wednesday night and moves across the lower and mid mississippi
valley on Thursday. There are some differences between the GFS and
ecmwf with this system with the euro solution featuring an upper
trough that takes on more of a negative tilt as it moves across
the lower mississippi valley. Widespread convection is forecast
as this system moves through from Wednesday night into Thursday
night with the potential for strong to severe thunderstorms. A
weak cold front associated with this system will attempt to push
into the local area.

A couple of dry days will then be on tap for Friday and Saturday
with an upper ridge sliding across the gulf south. Then, another
vigorous system will move out of the southwest CONUS and into the
middle section of the country late next weekend or the beginning
of the following work week. The GFS and ECMWF have some
significant differences with how they handle this system with
regard to its evolution, strength and timing. The euro is the
fastest model. If the euro is correct, then more convection could
be in the offing for next Sunday. 11
aviation...

once MVFR to ifr conditions due to lower CIGS and patchy fog this
morning improve, expectVFR conditions to prevail through the period
with southerly winds generally less than 10 knots. 95
marine...

a relatively weak pressure gradient will keep winds in the 10 to 15
knot range today and tonight with seas 2 to 4 feet. A surface low
will pass north of the area Monday, causing winds to strengthen a
bit, and exercise caution headlines may be necessary for a short
period. Weaker gradient flow will again be the rule Tuesday and
Tuesday night. It will be short lived, however, as yet another low
causes the pressure gradient to tighten with strong onshore flow and
rough seas Wednesday and Thursday. Small craft advisories may be
necessary as early as Thursday afternoon. 95
decision support...

dss code... Green.

Deployed... None.

Activation... None.

Activities... None.

Decision support service (dss) code legend:
green = no weather impacts that require action
blue = long fused watch/warning/advisory in effect or high
visibility event
yellow = heightened impacts with short fused
watch/warning/advisory issuances; radar support
orange = high impacts - slight to moderate risk of severe weather;
nearby tropical events, hazmat or other large episodes
red = full engagement for moderate risk of severe weather; direct
tropical threats; events of national significance.

Preliminary point temps/pops
Mcb 83 63 82 63 / 10 10 40 20
btr 84 65 83 65 / 10 10 30 10
asd 82 63 81 64 / 10 10 30 10
msy 83 67 82 67 / 10 10 20 10
gpt 78 64 78 65 / 10 10 30 10
pql 81 63 80 64 / 10 10 30 10

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
SPLL1 - South Timbalier Block 52, LA / CSI06 22 mi105 min SSE 6 G 8 74°F
KXPY 33 mi30 min SSE 7 75°F 68°F
EINL1 37 mi45 min S 12 G 12 73°F 62°F1016.6 hPa (+0.3)69°F
KSPR 38 mi30 min S 7 75°F 70°F
AMRL1 - 8764227 - Amerada Pass, LA 39 mi45 min SSE 6 G 9.9 75°F 61°F1017 hPa (+0.3)
LOPL1 - Louisiana Offshore Oil Port, LA 43 mi57 min SSE 4.1 G 4.1 74°F 3 ft1017.1 hPa
GRBL1 44 mi105 min SSE 4.1 G 5.1 1017.8 hPa (+1.1)
KEIR 46 mi30 min Calm 75°F 70°F
GISL1 - 8761724 - Grand Isle, LA 47 mi45 min SSE 6 G 8 74°F 74°F1017.8 hPa (+0.0)
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 48 mi45 min S 12 G 13 75°F 59°F1017.1 hPa (+0.0)

Wind History for LAWMA, Amerada Pass, LA
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NW9
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA33 mi50 minS 810.00 miPartly Cloudy77°F68°F74%1017.9 hPa

Wind History from XPY (wind in knots)
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Last 24hrS14
G19
S12NW18
G24
NW4SE7SE9SE7
G13
S7S6
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S6S4S6S8S9S9S6S6SW6S4S8S7S9S6S7
1 day agoSE16
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S12S9S10SE7S7S12
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S14S11
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2 days agoE8SE7
G12
E9E9SE8SE12SE11
G17
E9SE10SE10SE9SE13SE15SE14
G22
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Tide / Current Tables for Caillou Boca, Mississippi River Delta, Louisiana
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Caillou Boca
Click for Map
Sun -- 06:06 AM CDT     Moonrise
Sun -- 06:59 AM CDT     Sunrise
Sun -- 08:00 AM CDT     0.19 feet Low Tide
Sun -- 06:02 PM CDT     Moonset
Sun -- 07:18 PM CDT     Sunset
Sun -- 10:54 PM CDT     0.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.80.70.50.40.30.20.20.20.20.20.30.30.40.40.40.50.50.50.60.70.80.80.9

Tide / Current Tables for Raccoon Point, Caillou Bay, Louisiana
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Raccoon Point
Click for Map
Sun -- 06:07 AM CDT     Moonrise
Sun -- 06:44 AM CDT     0.32 feet Low Tide
Sun -- 07:00 AM CDT     Sunrise
Sun -- 06:03 PM CDT     Moonset
Sun -- 07:18 PM CDT     Sunset
Sun -- 11:21 PM CDT     1.12 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.110.80.70.50.40.30.30.30.40.50.50.60.60.60.60.60.70.70.80.911.11.1

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 (14,3,4,5)
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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.