Thursday, July19, 2018 L-36.com


Marine Weather and Tides
Lafitte, LA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.

Sunrise 6:11AMSunset 8:02PM Thursday July 19, 2018 12:36 PM CDT (17:36 UTC) Moonrise 12:07PMMoonset 12:00AM Illumination 42% 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
    EDIT      (on/off)   Help
GMZ538 Chandeleur Sound-breton Sound- 1020 Am Cdt Thu Jul 19 2018
Rest of today..West winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Tonight..West winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Friday..West winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Friday night..West winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Saturday..Southwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Saturday night..West winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Sunday..West winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Sunday night..West winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday..West winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday night..West winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1020 Am Cdt Thu Jul 19 2018
Synopsis..High pressure centered over the central gulf of mexico will dominate the coastal waters through the weekend. A low pressure system will affect the coastal waters early next week.

7 Day Forecast for Marine Location Near Lafitte, LA
   Hourly   EDIT   Help
location: 29.54, -90.06     debug


Area Discussion for - New Orleans/Baton Rouge, LA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 klix 190926
afdlix
area forecast discussion
national weather service new orleans la
426 am cdt Thu jul 19 2018

Short term
Latest guidance showing some confusion with strong differences in
moisture amounts leading to either very low or moderate precip
numbers. This should be a transition day from wet to relatively
drier and hot. For this reason, pop numbers have been taken back
just a bit showing a trend of lowering sh TS numbers for today
into the weekend. The dry air moving into the area from the north
can be seen in WV imagery, but this will not alleviate sh ts,
only bring them back to normal or just below for several days. The
dry air will also play another role with thunderstorms by
providing each with the opportunity to entrain this air causing
downburst speeds to increase as compared to the last several days.

So a severe thunderstorm can not be ruled out on any given day
now through the start of next week.

Heat index values will go up quite a bit over the next 48 hours.

Some numbers could be 110+ as we move into the weekend and even
the start of next week. A heat advisory will likely be issued
later today but will hold off on issuing this morning since it may
get confused with be active for today.

Long term
Stronger wind speeds will move into the back side of the long
wave trough that has been along the east coast today. This will
cause a broad troughing to develop from the gulf into georgia.

This weak trough will lift out Saturday. Then another surge of
winds fall into the back side of the upper trough Sunday causing
the upper trough to dig farther south cutting off the base of the
trough by the start of the new week. A broad baroclinic sfc low
will be stacked with the upper low as they will get caught in the
easterlies and move back to the west. This will bring our precip
chances back to normal or above next week breaking the oppressive
heat. There is some differences in solutions for Monday night into
Tuesday. But there is an outside possibility of a lower dew pt
surge moving in as a back door front that may bring mid 60f dew pt
air to at least a small portion of the area.

Aviation
Scattered thunderstorms will once again be the main forecast concern
today. Prob30 and vcts wording is in place to reflect this
convective risk from late morning into the evening hours. If a
thunderstorm passes over a terminal, gusty winds, MVFR ceilings, and
MVFR or ifr visiblities will be posible for an hour or less on
average. Outside of the convective threat,VFR conditions will
prevail at all of the terminals today. 32

Marine
Through Saturday, a general westerly flow of around 10 knots is
expected over the coastal waters. Seas should generally range from 2
to 3 feet during this period. The threat of stronger winds around
thunderstorms will be highest today with lower chances for Friday
and Saturday. The pressure gradient over the northern gulf will
increase heading into Sunday and Monday as a low pressure system
moves into the southeastern conus. West-southwest winds will
increase to 20 to 25 knots over the eastern waters and 15 to 20
knots over the western waters during this period. Seas will
correspondingly increase to 4 to 6 feet. A reduced threat of
thunderstorms will also continue through Monday. By Tuesday, the
low pressure system will move into the gulf south and the pressure
gradient over the waters will weaken. A southwest wind of 10 to 15
knots and seas of 3 to 4 feet along with the higher risk of
thunderstorms producing stronger wind gusts is expected. 32

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 94 74 96 75 30 20 20 0
btr 94 78 96 77 30 20 10 0
asd 93 77 95 77 40 20 20 10
msy 93 78 96 78 50 20 20 10
gpt 92 78 94 79 50 30 30 10
pql 93 75 96 76 50 30 30 10

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
GISL1 - 8761724 - Grand Isle, LA 20 mi37 min W 4.1 G 6 84°F 84°F1015.2 hPa (+0.0)
BYGL1 - 8762482 - Bayou Gauche, LA 26 mi37 min W 6 G 8 86°F 84°F1014.9 hPa (-0.5)
CARL1 27 mi37 min 88°F
KXPY 30 mi22 min SW 11 84°F 75°F
SHBL1 - 8761305 - Shell Beach, LA 31 mi37 min NW 11 G 13 84°F 84°F1014.6 hPa (-0.6)
NWCL1 - 8761927 - New Canal, LA 34 mi37 min WNW 4.1 G 9.9 87°F 87°F1014.5 hPa (-0.5)
KDLP 40 mi22 min WSW 22 82°F 81°F
FREL1 44 mi37 min W 5.1 G 8.9 87°F 1013.4 hPa
LOPL1 - Louisiana Offshore Oil Port, LA 45 mi90 min W 8.9 G 15 78°F 3 ft1016.1 hPa
PILL1 49 mi37 min NNW 7 G 9.9 83°F 87°F1015 hPa (-0.3)

Wind History for Grand Isle, LA
(wind in knots)    EDIT      (on/off)   Help
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
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
Last
24hr
W7
NW12
G15
NW8
W7
W6
G9
W8
G11
W9
W8
N15
NW7
N4
NW1
W1
SW2
S3
SW3
SW2
SW3
SW5
G11
SW5
W5
NW7
G10
W5
W4
1 day
ago
SW6
SW10
G15
W6
W5
G10
W5
SW2
W3
W3
W3
SW4
SW4
G7
SW4
SW4
G7
W5
G8
W5
SW5
G8
SW4
G7
W10
G16
SW5
G8
SW8
G11
SW5
G9
SW11
G16
W9
W8
G11
2 days
ago
SW5
G9
SW5
W5
G10
S3
SW4
G7
SW5
SW3
W3
SW2
SW3
W6
G9
SW6
G9
NW7
S6
G10
SW2
SW2
W2
NW9
NW11
G14
NW12
S12
G22
S9
G15
S5
G9
S5
G9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galliano, South Lafourche Airport, LA13 mi42 minSW 510.00 miOvercast87°F75°F70%1014.9 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA20 mi42 minW 67.00 miOvercast87°F80°F80%1014.3 hPa

Wind History from GAO (wind in knots)
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
-12
PM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
Last 24hrNW13SW4SW5SW4W6W3CalmNW3N4CalmS4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW8W6W9
1 day agoW7W7SW5CalmCalmCalmCalmCalmCalmSW3CalmSW3SW5CalmSW3W3W4W5CalmNW3W4W5SW4SW7
2 days agoNE3S7SW9SW7W4CalmCalmCalmCalmCalmNW3W4CalmCalmCalmCalmCalmCalmW4W5W4W4W8W7

Tide / Current Tables for Manilla, Mississippi River Delta, Louisiana
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Manilla
Click for Map
Thu -- 12:23 AM CDT     Moonset
Thu -- 01:24 AM CDT     0.45 feet Low Tide
Thu -- 06:12 AM CDT     Sunrise
Thu -- 08:09 AM CDT     0.70 feet High Tide
Thu -- 01:06 PM CDT     Moonrise
Thu -- 02:53 PM CDT     First Quarter
Thu -- 07:59 PM CDT     Sunset
Thu -- 11:15 PM CDT     0.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.40.50.50.50.60.70.70.70.70.70.70.60.60.60.60.50.50.50.50.50.40.40.4

Tide / Current Tables for Independence Island, Mississippi River Delta, Louisiana
   EDIT      (on/off)   Help   One Week of Data
Independence Island
Click for Map
Thu -- 12:10 AM CDT     0.41 feet Low Tide
Thu -- 12:23 AM CDT     Moonset
Thu -- 06:12 AM CDT     Sunrise
Thu -- 08:06 AM CDT     0.64 feet High Tide
Thu -- 01:06 PM CDT     Moonrise
Thu -- 02:53 PM CDT     First Quarter
Thu -- 07:59 PM CDT     Sunset
Thu -- 10:01 PM CDT     0.39 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.40.40.50.50.60.60.60.60.60.60.60.60.50.50.50.50.50.40.40.40.40.40.4

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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 (13,3,4,5)
      (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.