Friday, September20, 2019 L-36.com


Marine Weather and Tides
Dulac, LA

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:48AMSunset 7:03PM Friday September 20, 2019 3:09 PM CDT (20:09 UTC) Moonrise 10:20PMMoonset 11:29AM Illumination 58% Phase: Waning Gibbous; Moon at 21 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- 1042 Am Cdt Fri Sep 20 2019
.small craft advisory in effect through Saturday morning...
Rest of today..East winds 20 to 25 knots. Seas 3 to 5 feet. Dominant period 6 seconds. Chance of showers and Thunderstorms.
Tonight..East winds 20 to 25 knots. Seas 3 to 6 feet. Dominant period 7 seconds. Slight chance of showers and Thunderstorms.
Saturday..East winds 20 to 25 knots. Seas 3 to 6 feet with occasional seas to 8 feet. Dominant period 7 seconds. Slight chance of showers and Thunderstorms.
Saturday night..East winds 15 to 20 knots. Seas 3 to 6 feet with occasional seas to 8 feet. Dominant period 8 seconds. Slight chance of showers and Thunderstorms.
Sunday..East winds 15 to 20 knots. Seas 3 to 6 feet with occasional seas to 8 feet. Dominant period 8 seconds. Slight chance of showers and Thunderstorms through the day.
Sunday night..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Dominant period 8 seconds. Slight chance of showers and Thunderstorms after midnight.
Monday..Southeast winds 5 to 10 knots. Seas 3 to 5 feet. Dominant period 7 seconds. Slight chance of showers and Thunderstorms in the morning.
Monday night..Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 7 seconds.
Tuesday..Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 7 seconds.
Tuesday night..South winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Slight chance of showers and Thunderstorms after midnight.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1042 Am Cdt Fri Sep 20 2019
Synopsis..A ridge of high pressure will prevail over the coastal waters into 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 201556
afdlix
area forecast discussion
national weather service new orleans la
1056 am cdt Fri sep 20 2019

Marine update
Added a small craft exercise caution for the tidal lakes and
upgraded to a small craft advisory for all other coastal waters
through Saturday with extensions possible. Current wind trends
already have elevated easterly winds with sustained winds near or
at 20 knots. Waves may be choppier in the tidal lakes due to the
easterly winds going against the flow of water. -bl

Prev discussion issued 301 am cdt Fri sep 20 2019
discussion...

above normal temperatures and mainly dry conditions will prevail
through the next week. The best rain chances during this period
will likely be today with isolated to scattered convection
expected. The higher rain chances today will be over the western
half of the forecast area where the better moisture will reside.

Some drier air will begin pushing westward into the forecast area
today which will limit the chances for convection across eastern
zones, especially coastal mississippi. This drier air will filter
across much of the area into the weekend, but will be most noted
across eastern and northern sections of the forecast area. As a
result, it will feel a bit less humid and nighttime lows will be a
little lower... Primarily across south mississippi and the florida
parishes of southeast louisiana. Otherwise, ridging aloft will
dominate the gulf south with some weakening and suppression of the
ridge during the middle and end of next week as a couple of short
wave troughs pass to our north and northwest. Generally went a
bit above guidance for daytime highs, especially through the
weekend, given recent model guidance performance and the dry
conditions across much of the area. 11
aviation...

vfr category conditions will generally prevail at the terminals
during the TAF forecast period. Isolated to scattered convection
today could impact any of the terminals, with kgpt having the
least chance. The convection should mostly dissipate after sunset.

11
marine...

a tightening pressure gradient will result in moderate to strong
easterly flow across the coastal waters through the weekend.

Exercise caution headlines will be needed during this period for
all locations but the tidal lakes with even small craft advisory
conditions possible at times. The winds will relax going into next
week with high pressure prevailing across the region. 11
decision support...

dss code: green.

Deployed: none.

Activation: none.

Activities: none.

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 89 68 89 68 20 10 10 0
btr 88 71 90 71 40 10 20 0
asd 90 70 90 69 30 10 20 0
msy 90 74 90 74 40 20 20 0
gpt 90 72 90 72 20 10 10 0
pql 90 70 90 69 20 10 10 0

Lix watches warnings advisories
La... None.

Gm... Small craft advisory until 7 am cdt Saturday for gmz532-536-538-
550-552-555-557-570-572-575-577.

Ms... None.

Gm... Small craft advisory until 7 am cdt Saturday for gmz536-538-550-
552-555-557-570-572-575-577.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SPLL1 - South Timbalier Block 52, LA / CSI06 22 mi129 min E 18 G 21 83°F
KXPY 33 mi34 min E 13 G 21 81°F 75°F
EINL1 37 mi51 min SE 15 G 19 85°F 84°F1018.1 hPa72°F
AMRL1 - 8764227 - Amerada Pass, LA 39 mi51 min E 12 G 18 88°F 87°F1018 hPa
LOPL1 - Louisiana Offshore Oil Port, LA 43 mi72 min SSE 19 G 21 81°F 5 ft1019.1 hPa66°F
KEIR 46 mi34 min 6 G 13 86°F 73°F
GISL1 - 8761724 - Grand Isle, LA 47 mi57 min ESE 9.9 G 15 85°F
42094 48 mi69 min 85°F4 ft
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 48 mi51 min NE 6 G 7 81°F 85°F1018.4 hPa

Wind History for LAWMA, Amerada Pass, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA33 mi14 minE 1610.00 miPartly Cloudy81°F77°F89%1019 hPa

Link to 5 minute data for KXPY

Wind History from XPY (wind in knots)
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1 day agoS85S5SE6CalmCalmS3CalmCalmCalmSE3SE4SW4CalmCalmCalmE3CalmSE6E9E9SE9SE8SE8
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2 days agoSE7SE6SE8S6SE4SE3S4S4SW3SW5CalmCalmCalmCalmCalmCalmCalmCalmSE43SE5SE7SE7SE6

Tide / Current Tables for Caillou Boca, Mississippi River Delta, Louisiana
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Caillou Boca
Click for Map
Fri -- 01:55 AM CDT     1.69 feet High Tide
Fri -- 06:50 AM CDT     Sunrise
Fri -- 12:28 PM CDT     Moonset
Fri -- 02:11 PM CDT     0.42 feet Low Tide
Fri -- 07:02 PM CDT     Sunset
Fri -- 11:19 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.71.71.71.61.51.41.21.10.90.70.60.50.40.40.40.50.60.70.911.21.31.5

Tide / Current Tables for Raccoon Point, Caillou Bay, Mississippi River Delta, Louisiana
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Raccoon Point
Click for Map
Fri -- 01:12 AM CDT     1.99 feet High Tide
Fri -- 06:51 AM CDT     Sunrise
Fri -- 12:29 PM CDT     Moonset
Fri -- 01:03 PM CDT     0.49 feet Low Tide
Fri -- 07:02 PM CDT     Sunset
Fri -- 11:20 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2221.91.81.71.51.31.10.90.70.60.50.50.50.60.70.911.21.41.61.71.9

Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (16,3,4,5)
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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.