Wednesday, October18, 2017 L-36.com


Marine Weather and Tides
Port Sulphur, 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 7:03AMSunset 6:26PM Wednesday October 18, 2017 3:34 PM CDT (20:34 UTC) Moonrise 5:52AMMoonset 6:06PM 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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GMZ538 Chandeleur Sound-breton Sound- 950 Am Cdt Wed Oct 18 2017
Rest of today..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Tonight..East winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Thursday..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Thursday night..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Friday..East winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Friday night..Southeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Saturday..Southeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Saturday night..Southeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Sunday..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Sunday night..Southeast winds 5 to 10 knots becoming northwest after midnight. Waves 1 foot or less. Showers and Thunderstorms likely.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 950 Am Cdt Wed Oct 18 2017
Synopsis..Ridge of high pressure will remain anchored over the southeast into the weekend. A cold front will approach the coastal waters Sunday night.

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 180757
afdlix
area forecast discussion
national weather service new orleans la
257 am cdt Wed oct 18 2017

Synopsis
High pressure centered near washington, dc this morning with an
axis southwestward into east texas. Upper troughs off the atlantic
coast and over the canadian prairies. No significant cloud cover
or precipitation across the area. Away from direct marine
influences, temperatures are generally in the 50s and 60s early
this morning.

Short term
Upper ridging builds into the area for Thursday and Friday, so
little in the way of precipitation through Friday. Not really much
difference in high temperature guidance through Friday, although i
wouldn't be surprised to see highs a degree or two above guidance.

Met min temp guidance appears to be a little warm when compared to
gfs ECMWF numbers and will go toward those cooler readings. 35

Long term
As upper and surface highs move eastward, onshore flow will become
more established over the weekend. This will allow moisture to
return, with precipitation to return over the weekend as an upper
trough moves out of the rockies. Several impulses will wrap around
the trough, aiding in the development of showers and thunderstorms
each day until the upper trough passes. The GFS has returned to
carrying an upper low, while the ECMWF carries a quicker moving
open trough. In coordination with neighboring offices, will hold
precipitation mention in the forecast through Monday. Temperatures
will remain unseasonably warm through the weekend with high
temperatures 10-15 degrees above normal. Cooler weather arrives at
midweek. 35

Aviation
Could be some very low br conditions at a few sites this morning as
moisture makes a return but the warming a the same time should keep
vis restrictions weak around 1-3sm otherwiseVFR through 12z taf
cycle.

Marine
A broad general weakness over the central to southern gulf will
continue to interact with strong high pressure to the northeast
keeping most of the coastal waters in moderate easterly flow through
the week. The only areas that should escape these winds will be lake
pontchartrain, lake borgne and the mississippi sound. There will be
a diurnal fluctuation each day in wind speeds with the highest being
found overnight.

A few showers will begin to make their way back to the coasal waters
later today but will be well offshore. These showers will gradually
begin covering more of the area through the weekend with a few
thunderstorms moving back into the fcast as early as Friday and
lasting through a frontal passage Sunday night or Monday.

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.

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 78 50 81 55 0 0 0 0
btr 80 53 83 57 0 0 0 0
asd 80 53 83 57 0 0 0 0
msy 79 61 82 67 0 0 0 0
gpt 79 55 81 62 0 0 0 0
pql 79 52 83 58 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 mi47 min ENE 16 G 18 72°F 77°F1021 hPa
GISL1 - 8761724 - Grand Isle, LA 29 mi47 min ENE 12 G 14 77°F 77°F1020.4 hPa
KDLP 33 mi40 min E 15 G 20 77°F 64°F
PILL1 35 mi47 min ENE 13 G 19 75°F 79°F1020.1 hPa
CARL1 36 mi47 min 79°F
NWCL1 - 8761927 - New Canal, LA 39 mi47 min E 12 G 15 74°F 75°F1020.7 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 44 mi47 min ENE 2.9 G 7 79°F 76°F1020.6 hPa
KXPY 45 mi40 min ENE 9.9 79°F 59°F
KMIS 46 mi40 min ENE 20 73°F 63°F
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 48 mi47 min ENE 18 G 21
BURL1 - Southwest Pass, LA 49 mi35 min NE 18 G 20 76°F 1019.6 hPa (-1.5)66°F

Wind History for Shell Beach, LA
(wind in knots)    EDIT      (on/off)   Help
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NE11
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E10
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NE11
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G22
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boothville, LA22 mi44 minENE 129.00 miA Few Clouds78°F64°F64%1020.6 hPa

Wind History from BVE (wind in knots)
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Last 24hrNE9NE9
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E11E12E7E9E9NE6NE3E4E5E5E5NE6NE6E13E10
G18
E9NE8NE11NE12
1 day agoN9
G17
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G19
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NE8NE9NE9
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NE9NE10NE7NE9N8
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2 days ago--W4SW7S3NE3CalmCalmNW4W3CalmCalmNW3N5CalmN7
G19
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G22
N11
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G19
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G17
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G18
--N10
G20
N10
G18

Tide / Current Tables for Bay Gardene, Louisiana
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Bay Gardene
Click for Map
Wed -- 01:38 AM CDT     1.36 feet High Tide
Wed -- 05:51 AM CDT     Moonrise
Wed -- 07:02 AM CDT     Sunrise
Wed -- 08:31 AM CDT     1.04 feet Low Tide
Wed -- 03:34 PM CDT     1.31 feet High Tide
Wed -- 06:06 PM CDT     Moonset
Wed -- 06:24 PM CDT     Sunset
Wed -- 06:41 PM CDT     1.28 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.41.41.31.31.21.11.1111.11.11.21.21.31.31.31.31.31.31.31.31.41.4

Tide / Current Tables for Gardner Island, Breton Sound, Louisiana
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Gardner Island
Click for Map
Wed -- 05:50 AM CDT     Moonrise
Wed -- 06:43 AM CDT     0.85 feet Low Tide
Wed -- 07:01 AM CDT     Sunrise
Wed -- 01:07 PM CDT     1.05 feet High Tide
Wed -- 03:56 PM CDT     1.04 feet Low Tide
Wed -- 06:05 PM CDT     Moonset
Wed -- 06:23 PM CDT     Sunset
Wed -- 10:48 PM CDT     1.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.11.110.90.90.90.80.90.91111.11111.11.11.11.21.31.31.3

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 (16,3,4,5)
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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.