Tuesday, March26, 2019 L-36.com


Marine Weather and Tides
Port Sulphur, LA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:55AMSunset 7:15PM Tuesday March 26, 2019 5:53 AM CDT (10:53 UTC) Moonrise 12:17AMMoonset 11:06AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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 Expires:201903262115;;358807 Fzus54 Klix 260853 Cwflix Coastal Waters Forecast National Weather Service New Orleans La 353 Am Cdt Tue Mar 26 2019 Pascagoula To Atchafalaya River Out To 60 Mile Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest Ten Percent Of The Waves. Gmz536-538-262115- Chandeleur Sound-breton Sound- 353 Am Cdt Tue Mar 26 2019
Today..North winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Tonight..North winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Wednesday..Northeast winds 15 to 20 knots becoming east 5 to 10 knots late in the afternoon. Waves 2 to 4 feet. Dominant period 4 seconds. Waves subsiding to 1 foot in the afternoon.
Wednesday night..East winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Thursday..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Thursday night..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Friday..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday night..South winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Saturday..South winds 5 to 10 knots. Waves 1 to 2 feet. Slight chance of showers.
Saturday night..Southeast winds 10 to 15 knots becoming northeast after midnight. Waves 1 to 2 feet. Chance of showers.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 353 Am Cdt Tue Mar 26 2019
Synopsis..A cold front moved through the coastal waters overnight. High pressure will build over the northern gulf of mexico through Wednesday and control the weather across the waters through the remainder of the week.


7 Day Forecast for Marine Location Near Port Sulphur, LA
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location: 29.6, -89.62     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 260907
afdlix
area forecast discussion
national weather service new orleans la
407 am cdt Tue mar 26 2019

Short term
Advection of dry cool air will continue through Wed and stabalize
Thursday. Winds will veer around to the east Thursday and
southeast by Friday. This will help to bring some moisture back to
the area starting Friday, but the moisture advection will be a
rather slow process as dew pt temps will struggle to get back to
the mid 60s by the weekend just ahead of the next cold front. The
front should move through Saturday night into Sunday morning. The
front does not look to cleanly push through as the subtrop jet
will keep moisture lifting over the boundary into the cooler air
behind the front. A sfc low may form along the boundary over the
gulf and lift northeast. At the moment, there is no confidence in
the placement of this low and where it approaches the coast. But
this should be somewhere between the new oreans area and tampa
bay Monday or Tuesday of next week. The weekend into early next
week will be the only focus for meso or synoptic scale weather
impacts.

Aviation
Cold front has moved south of all terminals. All terminals currently
vfr. Only two real concerns for the 12z package. First is whether
clouds over northern half of mississippi continue to sink southward
toward kasd and kgpt later this morning. These cold advection
stratocumulus clouds are based around fl025, give or take a few
hundred feet, so MVFR ceilings are not out of the question. Looks
like it will be a close call around 16-18z, but current indications
are that the clouds will get shunted eastward just as they arrive in
the area. Second will be northerly winds due to cold advection at
knew and kmsy. Some potential for gusts to 20 knots during the
evening hours tonight, primarily at knew. 35

Marine
Cold front has moved through most of the coastal waters this
morning. Seeing a brief increase in winds over the coastal waters.

Certainly will need exercise caution headlines over the outer waters
today, but question is over the inner waters and tidal lakes and
sounds. Right now, it appears that 15 knots may hold the for the
lakes, sounds and inner waters, and will hold off on headlines
there. A secondary push of colder and drier air will arrive this
evening and likely will need headlines tonight for most or all
waters. Winds should ease during the day on Wednesday.

Conditions should then be quiet through at least Saturday. Beyond
that, quite a bit of difference in medium range model guidance. Have
opted toward a blended solution which fits with most neighbors. Will
note that the GFS solution is significantly more windy from Sunday
onward as it tracks a fairly healthy surface low across southeast
louisiana. This solution appears to have been favored by the ocean
prediction center for the middle gulf of mexico, but we are
consistent with wfos mob and lch. This is beyond the 5 days of the
marine forecast package, so there is time to make adjustments if
necessary. 35

Decision support
Dss code: blue.

Deployed: none.

Activation: none.

Activities: river flood warnings
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; marginal risk severe or excessive rain.

Yellow = heightened impacts with short-fused watch, warning or
advisory issuances; radar support for slight risk severe
or excessive rain.

Orange = high impacts; enhanced risk severe; nearby tropical events;
hazmat or other large episodes.

Red = full engagement for moderate to high risk of severe and or
excessive rainfall, or direct tropical threats; events of
national significance.

Preliminary point temps pops
Mcb 69 41 72 46 0 0 0 0
btr 70 44 72 48 0 0 0 0
asd 71 46 71 48 0 0 0 0
msy 70 50 69 53 0 0 0 0
gpt 69 46 69 50 0 0 0 0
pql 71 46 72 48 0 0 0 0

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
SHBL1 - 8761305 - Shell Beach, LA 19 mi35 min 61°F 67°F1021 hPa
GISL1 - 8761724 - Grand Isle, LA 29 mi35 min 63°F 69°F1020.6 hPa
KDLP 33 mi18 min WNW 8.9 63°F 54°F
PILL1 35 mi35 min 60°F 54°F1019.8 hPa
CARL1 36 mi35 min 54°F
NWCL1 - 8761927 - New Canal, LA 39 mi35 min 60°F 65°F1021.2 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 44 mi35 min 58°F 70°F1021.5 hPa
KXPY 45 mi18 min N 12 G 20 63°F 54°F
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 48 mi41 min 60°F 54°F1020.5 hPa
BURL1 - Southwest Pass, LA 49 mi113 min N 14 G 16 62°F 1019.2 hPa (+0.5)56°F

Wind History for Shell Beach, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boothville, LA22 mi62 minVar 510.00 miFair60°F52°F75%1020 hPa

Wind History from BVE (wind in knots)
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Last 24hr--S3CalmSW4W5W8SW7SW9SW9SW12SW11SW11SW10
G18
SW12SW10SW9W8W8W7NW9N7N8N55
1 day agoCalmCalmE3E5E6E5E7E8E75S6S8S7SE6SE3SE4SE3SE4SE3SE4SE3S4S4Calm
2 days agoCalmCalmE3NE3NE5E6NE6E7E7E7E6E5E5E4E4E5E4NE3E3E4E4E3SE3Calm

Tide / Current Tables for Gardner Island, Breton Sound, Louisiana
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Gardner Island
Click for Map
Tue -- 12:16 AM CDT     Moonrise
Tue -- 02:24 AM CDT     -0.22 feet Low Tide
Tue -- 06:54 AM CDT     Sunrise
Tue -- 11:04 AM CDT     Moonset
Tue -- 03:16 PM CDT     1.41 feet High Tide
Tue -- 07:12 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.2-0.2-0.2-0.2-0.100.20.30.50.70.91.11.21.41.41.41.31.210.80.60.40.2

Tide / Current Tables for Shell Beach, Lake Borgne, Louisiana
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Shell Beach
Click for Map
Tue -- 12:18 AM CDT     Moonrise
Tue -- 06:17 AM CDT     -0.19 feet Low Tide
Tue -- 06:55 AM CDT     Sunrise
Tue -- 11:05 AM CDT     Moonset
Tue -- 06:57 PM CDT     1.23 feet High Tide
Tue -- 07:13 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.30.1-0-0.1-0.2-0.2-0.2-0.1-0.10.10.20.30.50.70.811.11.21.21.21.110.9

Weather Map and Satellite Images
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GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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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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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.