Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Slidell, LA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:19AMSunset 7:34PM Wednesday April 25, 2018 1:07 PM CDT (18:07 UTC) Moonrise 3:28PMMoonset 3:50AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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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GMZ534 Lake Borgne- 1042 Am Cdt Wed Apr 25 2018
Rest of today..Northwest winds near 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tonight..West winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers after midnight.
Thursday..West winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and slight chance of Thunderstorms in the morning.
Thursday night..Northwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday..Northwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms in the afternoon.
Friday night..North winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds.
Saturday..North winds 10 to 15 knots becoming west 5 to 10 knots late in the afternoon. Waves 1 to 2 feet. Dominant period 4 seconds.
Saturday night..Southwest winds 5 to 10 knots becoming east after midnight. Waves 1 foot or less. Dominant period 4 seconds.
Sunday..East winds near 10 knots. Waves 1 to 2 feet.
Sunday night..East winds near 10 knots. Waves 1 foot or less.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1042 Am Cdt Wed Apr 25 2018
Synopsis..A series of weak cold fronts will sweep across the coastal waters through Friday. High pressure will then settle over the coastal waters for the upcoming weekend.

7 Day Forecast for Marine Location Near Slidell, LA
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location: 30.27, -89.79     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 250845
afdlix
area forecast discussion
national weather service new orleans la
345 am cdt Wed apr 25 2018
first short wave on the way this morning as it moves through
nebraska. The attendant cold front will move through with some
showers Thursday morning while there is the possibility of some
thunderstorms over the northern most portion of the area as well.

Severe thunderstorm activity, if any, should stay north and east
of our area.

The second short wave will be quick on the heels of this one and
should move through Friday. It is currently located over northern
canada. This will also help keep the area in a rather cool and
mostly dry forecast. This short wave will also be coupled with
some rather cold 500mb temps. There is very little moisture
associated with it, but the strong dynamic lift will cause layer
lifting which in turn causes instability of these layers and high
enough rh levels to produce rainfall. Sounding profiles are
supportive of hail with any thunderstorm activity that is capable
of getting started. So of the two systems, the one having the best
opportunity of having strong or a severe thunderstorm with it will
be the Friday system. While this system is moving through,
stability will increase along with more dry air intrusion. This
will cause thunderstorms to decay as they move through the area
Friday.

Warm air and moisture will begin to return to the area by the
start of the new week. This could lead to some convergent showers
moving in from the gulf by Tuesday and Wednesday. There is some
indication of a large slow moving cold front possibly affecting
the area by the end of next week.

Aviation
Vfr conditions will prevail at the majority of the terminals through
06z. However, at kmcb some light fog could develop around 12z and
push visibilities into MVFR range for an hour or two. After 06z, an
approaching front will bring lower ceilings to most of the
terminals. Expect to see prevailing ifr and MVFR ceilings in place
by 12z tomorrow. Some scattered showers and isolated thunderstorms
should also accompany the frontal passage by 12z tomorrow, but any
visibility restrictions will be short-lived as the convection passes
through quickly. 32

Marine
A passing frontal boundary late tonight and tomorrow should result
in west-northwest winds of 15 to 20 knots and higher seas developing
late tonight into tomorrow morning over the open gulf waters and
sounds. Gradient flow should relax back to around 10 knots by
Thursday night. However, another front will pass through the
coastal waters on Friday. Another surge of stronger northerly winds
of 15 to 20 knots and higher seas will once again develop over the
open gulf waters and sounds for late Friday and Friday night. High
pressure should settle directly over the waters for the weekend, and
winds should turn more variable and drop to 10 knots or less. Seas
should also fall back to 3 feet or less for the weekend. 32

Decision support
Dss code: blue.

Deployed: none.

Activation: none.

Activities: sandhill crane nwr outreach support
new orleans navy week support
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; direct tropical threats; events of
national significance.

Preliminary point temps pops
Mcb 77 58 71 53 10 60 20 10
btr 81 59 73 54 10 50 20 10
asd 79 62 74 56 0 30 40 10
msy 80 64 74 59 0 30 40 10
gpt 79 64 75 57 0 20 50 10
pql 78 63 75 56 0 20 50 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
NWCL1 - 8761927 - New Canal, LA 24 mi49 min NNW 2.9 G 5.1 70°F 72°F1017.2 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 25 mi49 min NNW 7 G 8 72°F 70°F1016.6 hPa
SHBL1 - 8761305 - Shell Beach, LA 28 mi49 min NNE 1.9 G 2.9 68°F 74°F1017.1 hPa
CARL1 30 mi49 min 59°F
FREL1 35 mi49 min NNE 1.9 G 4.1 75°F 1016.5 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 47 mi151 min Calm G 4.1 76°F 73°F1017.8 hPa

Wind History for New Canal Station, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Slidell, Slidell Airport, LA6 mi74 minN 810.00 miFair77°F55°F47%1016.8 hPa
Bay St. Louis, Stennis International Airport, MS19 mi77 minN 97.00 miClear75°F55°F50%1016.9 hPa
New Orleans, New Orleans Lakefront Airport, LA20 mi74 minWNW 610.00 miFair72°F57°F59%1016.9 hPa

Wind History from ASD (wind in knots)
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Last 24hrNW95
G14
N7N9NW8N6N5CalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmCalmN6N6N9N8N8
1 day agoSW765NW8NW6N6N4N3N3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm4N8NW8NW85
2 days agoSW13
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65CalmCalmCalmNW53NW35CalmCalmCalmCalmCalmCalmCalmW5NW7SW9W7W10
G15

Tide / Current Tables for Bayou BonFouca, Route 433, Louisiana
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Bayou BonFouca
Click for Map
Wed -- 03:21 AM CDT     0.49 feet High Tide
Wed -- 03:49 AM CDT     Moonset
Wed -- 06:21 AM CDT     Sunrise
Wed -- 02:40 PM CDT     0.09 feet Low Tide
Wed -- 03:27 PM CDT     Moonrise
Wed -- 07:33 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.50.50.50.50.50.50.40.40.30.30.20.20.10.10.10.10.10.20.20.30.30.30.3

Tide / Current Tables for Pearlington, Pearl River, Mississippi
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Pearlington
Click for Map
Wed -- 03:48 AM CDT     Moonset
Wed -- 06:20 AM CDT     Sunrise
Wed -- 08:40 AM CDT     0.20 feet Low Tide
Wed -- 03:26 PM CDT     Moonrise
Wed -- 07:32 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.110.90.80.60.50.40.30.20.20.20.30.40.50.60.70.70.80.80.80.90.90.90.9

Weather Map and Satellite Images
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wmap_A
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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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.