Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Violet, 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 6:20AMSunset 7:34PM Wednesday April 25, 2018 6:52 PM CDT (23:52 UTC) Moonrise 3:28PMMoonset 3:49AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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
    EDIT      (on/off)   Help
GMZ534 Lake Borgne- 434 Pm Cdt Wed Apr 25 2018
.small craft exercise caution in effect from 3 am cdt Thursday through Thursday morning...
Tonight..West winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Slight chance of showers after midnight.
Thursday..West winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and slight chance of Thunderstorms in the morning.
Thursday night..North winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday..Northwest winds near 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms in the afternoon.
Friday night..North winds near 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Saturday..Northwest winds 5 to 10 knots becoming west late in the afternoon. Waves 1 foot or less. 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.
Monday..East winds 10 to 15 knots. Waves 2 to 4 feet.
Monday night..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Slight chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 434 Pm 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 Violet, LA
   Hourly   EDIT   Help
location: 29.97, -89.7     debug


Area Discussion for - New Orleans/Baton Rouge, LA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 klix 252056
afdlix
area forecast discussion
national weather service new orleans la
356 pm cdt Wed apr 25 2018

Synopsis
Latest surface analysis showed a 1018mb high over northwest gulf
of mexico and a cold front from the ohio valley to arklatex
region to central texas. Surface winds over the area were
generally northerly around the high and surface dewpoint readings
were in the 50s this afternoon. Upper air analysis showed a low
over north oklahoma with the associated trough axis positively
tilted to west texas. Southwest flow ahead of the trough axis has
increased moisture over east texas and arkansas. Precipitable
water values were 0.8 inch over louisiana and 1.25 inches over
central texas at 12z. Another trough axis was noted over montana.

18

Discussion
The upper level trough over the southern plains will dive
southeast tonight and Thursday. This wave will bring its own
moisture or the moisture ahead of the trough. Precipitable water
values will increase up to 1.4 inches late tonight. The trough
will reach the lower mississippi valley Thursday morning becoming
neutrally tilted Thursday morning and becoming negatively tilted
over alabama Thursday afternoon, north and east of our forecast
area.

This is a cold core system will have a core temp of -21f well
north of the area. Models have backed off with the cooler temps
at 5h sweeping across our north zones, now projecting -12f to -14f
over the north zones. Will maintain convection and coverage late
tonight with a slight decrease in coverage as the system becomes
neutrally tilted toward noon Thursday. Then dry air will behind
exiting trough will decrease rain chances Thursday afternoon.

Severe weather is not anticipated as stronger dynamics will remain
north of the area on late tonight through Thursday afternoon.

The next system will quickly dive southeast over the forecast on
Friday. We talked about moisture remaining limited for several
runs and GFS show a little swath of 1 inch precipitable water
value at 18z across the north zones, 0.2 higher than previous
runs. Model consensus show web bulb zero around 8kft over the
forecast area Friday, less time for melting hail stones if
present. Mid layer lapse rates 7h to 5h off of gfs, nam12 and euro
showed values of 6.8 to 7.5 c km, need around 7 c km or greater.

In addition, MUCAPE value between btr and asd at 18z is projected
around 1000 j kg, 1000 j kg is need for any hail formation. Flow
will be northwesterly throughout the sounding at 18z. With no deep
sheer, growth of hail will be difficult but sub- severe small
hail is possible on Friday and hazardous weather outlook has it
covered for now. Conditions will improve Friday night with a
pleasant dry weekend expected with seasonal temperatures. Next
chance of rain will be mid next week.

18

Marine
A relatively weak cold front slide through Thursday morning as a
weak upper trough tracks across the southeast. A surge of drier air
behind this front could push winds back to around 15 knots Thursday
morning and early afternoon. Its borderline whether an exercise
caution headline will be needed. Very progressive upper level
pattern will bring yet another frontal boundary through the coastal
waters Friday. This will push winds back to 15 knots over the open
gulf waters for Friday evening through early Saturday. Surface high
pressure will track from west to east across the southeastern conus
this weekend. This will cause winds to rotate around from NW to se.

Onshore flow regime will settle in for the first half of next week.

Wind speeds will gradually increase due to tightening pressure
gradient.

Meffer

Aviation
Vfr conditions will dominate through the rest of this afternoon with
little in the way of cloud cover. A fast moving frontal system will
move into the region overnight. Showers with a few storm possible
will pass through from west to east from after 06z tonight and
ending during the mid to late morning hours. The main impact will be
lower ceilings, which could fall below 1kft.

Meffer

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 57 70 51 74 60 20 10 30
btr 58 72 53 75 50 20 10 30
asd 59 73 53 75 30 40 10 30
msy 63 73 57 75 30 40 10 30
gpt 64 74 55 73 20 50 10 20
pql 64 74 52 75 20 50 10 20

Lix watches warnings advisories
La... None.

Gm... None.

Ms... None.

Gm... None.



Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SHBL1 - 8761305 - Shell Beach, LA 7 mi52 min NW 6 G 7 77°F 78°F1013.9 hPa (-1.6)
NWCL1 - 8761927 - New Canal, LA 22 mi52 min NNW 1.9 G 2.9 78°F 76°F1013.7 hPa (-1.7)
CARL1 23 mi52 min 59°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 32 mi52 min N 8 G 9.9 78°F 75°F1013.6 hPa (-1.4)
FREL1 39 mi52 min Calm G 2.9 81°F 1012.7 hPa (-1.5)
BYGL1 - 8762482 - Bayou Gauche, LA 40 mi52 min W 2.9 G 5.1 81°F 77°F1014.1 hPa

Wind History for Shell Beach, LA
(wind in knots)    EDIT      (on/off)   Help
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last
24hr
NW10
NW10
N13
N15
N13
N9
G13
N10
N7
N7
N9
N8
N8
N10
N10
N8
G11
N7
N4
N2
NW5
NW9
NW8
NW8
NW5
NW6
1 day
ago
NW11
NW12
N13
N13
N8
NW4
SW3
SW5
SW5
SW5
W6
W10
W8
W10
NW10
NW10
NW9
NW9
G13
NW13
G16
NW17
NW16
G20
NW14
G17
NW13
NW13
2 days
ago
NW6
NW5
W5
NW11
NW20
NW17
NW18
NW15
G20
NW17
NW13
G16
NW14
G17
W10
W10
SW7
W10
NW12
NW9
W10
G15
NW8
G14
NW8
W4
G8
NW13
NW13
NW14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans, New Orleans Lakefront Airport, LA18 mi59 minWSW 510.00 miFair78°F61°F56%1013.3 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA20 mi57 minVar 610.00 miA Few Clouds80°F57°F47%1013.6 hPa

Wind History from ASD (wind in knots)
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last 24hrN6N5CalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmCalmN6N6N9N8N8--N9
G16
NW7N6NW4
1 day agoN6N4N3N3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm4N8NW8NW85NW95
G14
N7N9NW8
2 days agoCalmCalmCalmNW53NW35CalmCalmCalmCalmCalmCalmCalmW5NW7SW9W7W10
G15
SW765NW8NW6

Tide / Current Tables for Shell Beach, Lake Borgne, Louisiana
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Shell Beach
Click for Map
Wed -- 03:48 AM CDT     Moonset
Wed -- 06:21 AM CDT     Sunrise
Wed -- 09:25 AM CDT     0.12 feet Low Tide
Wed -- 03:27 PM CDT     Moonrise
Wed -- 07:32 PM CDT     Sunset
Wed -- 11:17 PM CDT     0.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
110.80.70.60.40.30.20.20.10.10.20.20.30.40.50.60.60.70.70.80.80.90.9

Tide / Current Tables for Chef Menteur, Chef Menteur Pass, Louisiana
   EDIT      (on/off)   Help   One Week of Data
Chef Menteur
Click for Map
Wed -- 03:49 AM CDT     Moonset
Wed -- 06:21 AM CDT     Sunrise
Wed -- 09:36 AM CDT     0.18 feet Low Tide
Wed -- 03:27 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
10.90.90.80.70.50.40.30.20.20.20.20.30.40.50.50.60.70.70.70.80.80.80.8

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES Local Image of Southeast    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 (19,4,5,8)
      (on/off)   Help

Ground Weather Radar Station New Orleans/Baton Rouge, LA
   (on/off)   Help
weather_mapweather_map weather_map

Gulf Stream Current


Ad by Google

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.