Wednesday, November14, 2018 L-36.com


Marine Weather and Tides
Golden Meadow, 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 6:25AMSunset 5:08PM Wednesday November 14, 2018 6:42 PM CST (00:42 UTC) Moonrise 12:12PMMoonset 11:10PM Illumination 44% Phase: First Quarter Moon; Moon at 7 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- 254 Pm Cst Wed Nov 14 2018
.small craft exercise caution in effect through Thursday morning...
Tonight..North winds 20 to 25 knots. Seas 6 to 10 feet with occasional seas to 11 feet. Dominant period 4 seconds. Waves or seas subsiding to 5 to 8 feet with occasional seas to 9 feet. Dominant period 4 seconds after midnight.
Thursday..Northwest winds 15 to 20 knots. Seas 4 to 7 feet with occasional seas to 8 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.
Thursday night..North winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 4 seconds. Waves or seas subsiding to 1 to 2 feet. Dominant period 4 seconds after midnight.
Friday..North winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Friday night..Northeast winds 5 to 10 knots. Seas 1 foot or less. Dominant period 4 seconds.
Saturday..East winds 5 to 10 knots. Seas 1 foot or less. Dominant period 4 seconds.
Saturday night..Northeast winds 5 to 10 knots. Seas 1 foot or less. Dominant period 4 seconds.
Sunday..Northeast winds 5 to 10 knots. Seas 1 foot or less. Dominant period 4 seconds.
Sunday night..Northeast winds 10 to 15 knots. Seas 1 foot or less. Dominant period 4 seconds.
Monday..Northeast winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Monday night..Northeast winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Chance of showers after midnight.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 254 Pm Cst Wed Nov 14 2018
Synopsis..Strong northwesterly winds will persist tonight and into tomorrow. Winds will likely diminish late week and into this weekend thanks to surface high pressure across the northern gulf of mexico.


7 Day Forecast for Marine Location Near Golden Meadow, LA
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location: 29.13, -90.42     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 142103
afdlix
area forecast discussion
national weather service new orleans la
303 pm cst Wed nov 14 2018

Synopsis
Upper low currently centered over southern arkansas. Starting to
see some indications from satellite and surface obs that low
clouds may be starting to break up over the atchafalaya basin, but
until upper jet pulls out, there will still be high clouds above
the low ones. Lix radar shows no significant precipitation over
the area, any returns being seen are from mid level clouds, and
not seeing any echoes below about 6500 feet. Cloud cover has meant
no recovery in temperatures today with mid-afternoon temperatures
generally in the upper 30s and lower 40s. Wind chill values range
from the upper 20s to upper 30s.

Short term
Drier air is on the way, and with the upper low jet MAX forecast
to shift northeast during the night, skies are expected to clear.

Timing of the departure of the high clouds will determine whether
the current freeze warning verifies. With upstream dew points over
northern louisiana and central mississippi in the upper 20s, will
not make significant changes to going forecast or warning
configuration, but not out of the question that some areas in the
warning could see temperatures remain just above freezing tonight.

Beyond tonight... Clear skies will be the rule across the area
through the weekend. Still some slight cold advection tomorrow, so
temperatures are going to have a difficult time getting past the
lower 50s, even with full sun. Another cold night tomorrow night
with areas north of the interstate 10 12 corridors potentially
seeing another light freeze. Gradual warming into the weekend with
high temperatures on Saturday and Sunday pretty close to normal.

Guidance spread on temperatures is actually pretty small for this
time of year, and have accepted a blend of guidance on highs. 35

Long term
Upper flow becomes more zonal over the weekend, and only a weak
shortwave forecast to move through on Monday or Tuesday. At this
time, an increase in clouds is about all that is anticipated. A
stronger system is expected to move out of the southern rockies
Wednesday into Thursday. Precipitation could spread into the area
as early as Wednesday, but is more likely Wednesday night and
thanksgiving day. Those periods will be beyond the scope of the
current forecast package, but something to keep in mind for later
forecast packages.

Extended temperature guidance will be dependent on cloud cover
with the early week shortwave, but highs should be fairly close to
normal, with lows near to slightly above normal. 35

Aviation
Lingering clouds remain in place across most of SE la and coastal ms
in the wake of a departing upper-level system to our north. Cigs
have been rather consistent between 008 and 012 and should stay that
way through late evening. These clouds will progress to the east
through early tonight leading to eventual clearing into daybreak
tomorrow. Winds should steadily diminish for inland locations
throughout the night, but will likely remain breezy along coastal
areas with winds remaining generally from the northwest. Tomorrow
will be dry with clear skies, leading to widespreadVFR categories
for all terminals. Klg

Marine
Strong northwesterly offshore winds will continue through tonight
and into tomorrow thanks to a departing upper-level system well
north across arkansas. Small craft advisory has been extended for
offshore zones until 15z tomorrow, and added marine zones gmz536 and
gmz538. Support behind this decision was an in depth analysis at
what appears to be a developing low-level speed MAX behind
tightening height gradients across the area. Model sounding guidance
across these outer marine zones support the development of a well-
mixed marine boundary layer which will have no problem transferring
these low-level winds to the sea surface through mid morning
Thursday. Lingering gusty winds and seas 3-5 feet following through
mid-afternoon has prompted exercise caution statements for the 4
offshore zones of SE la. Otherwise, winds will finally diminish on
Friday and going into the weekend. Klg

Decision support
Dss code: blue
deployed: none
activation: none
activities: freeze warning in effect for majority of area
small craft advisory in effect for coastal waters
river flood warning along the pearl river near
bogalusa to pearlington and along the mississippi river
at red river landing
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 28 51 33 62 0 0 0 0
btr 30 53 34 63 0 0 0 0
asd 30 53 32 62 0 0 0 0
msy 35 52 38 61 0 0 0 0
gpt 31 51 34 60 10 0 0 0
pql 30 52 31 61 10 0 0 0

Lix watches warnings advisories
La... Freeze warning from midnight tonight to 9 am cst Thursday for
laz034>037-039-040-046>050-056>059-065-071-072.

Gm... Small craft advisory until 9 am cst Thursday for gmz555-557-570-
572-575-577.

Ms... Freeze warning from midnight tonight to 9 am cst Thursday for
msz068>071-077-080>082.

Gm... Small craft advisory until 9 am cst Thursday for gmz557-570-572-
575-577.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KXPY 12 mi27 min NNW 15 43°F 37°F
SPLL1 - South Timbalier Block 52, LA / CSI06 18 mi102 min NNW 20 G 25 46°F
GISL1 - 8761724 - Grand Isle, LA 26 mi42 min N 11 G 19 43°F 54°F1025.5 hPa (+0.5)
LOPL1 - Louisiana Offshore Oil Port, LA 27 mi77 min N 12 G 23 44°F 4 ft1025.1 hPa38°F
BYGL1 - 8762482 - Bayou Gauche, LA 46 mi42 min NNW 1 G 6 40°F 55°F1026.7 hPa (+0.4)
KMDJ 47 mi27 min

Wind History for Grand Isle, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA12 mi47 minNNW 1510.00 miOvercast43°F37°F81%1026.1 hPa
Galliano, South Lafourche Airport, LA23 mi47 minNNW 1010.00 miMostly Cloudy41°F34°F78%1026.1 hPa

Wind History from XPY (wind in knots)
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Last 24hr----N15N13
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1 day agoNW7NW3NW13N15N15N11
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2 days agoNE11
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NW5CalmW4

Tide / Current Tables for Pelican Islands, Timbalier Bay, Mississippi River Delta, Louisiana
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Pelican Islands
Click for Map
Wed -- 02:52 AM CST     1.23 feet High Tide
Wed -- 06:24 AM CST     Sunrise
Wed -- 12:12 PM CST     Moonrise
Wed -- 02:59 PM CST     0.08 feet Low Tide
Wed -- 05:07 PM CST     Sunset
Wed -- 11:10 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.11.21.21.21.110.90.80.60.50.30.20.10.10.10.10.20.20.30.50.60.70.8

Tide / Current Tables for Timbalier Island, Timbalier Bay, Mississippi River Delta, Louisiana
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Timbalier Island
Click for Map
Wed -- 12:45 AM CST     1.25 feet High Tide
Wed -- 06:24 AM CST     Sunrise
Wed -- 12:12 PM CST     Moonrise
Wed -- 12:56 PM CST     0.08 feet Low Tide
Wed -- 05:07 PM CST     Sunset
Wed -- 11:11 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.31.21.21.10.90.80.60.50.30.20.10.10.10.10.20.30.40.50.60.70.80.91

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 (19,4,5,8)
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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.