Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Metairie, LA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:54AMSunset 7:17PM Sunday March 26, 2017 4:12 AM CDT (09:12 UTC) Moonrise 5:05AMMoonset 5:00PM 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
    EDIT      (on/off)   Help
GMZ530 Lake Pontchartrain And Lake Maurepas- 336 Am Cdt Sun Mar 26 2017
Today..South winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Patchy fog early in the morning. Visibility 1 mile or less early in the morning.
Tonight..South winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds.
Monday..South winds near 15 knots. Waves 3 to 4 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Monday night..South winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds.
Tuesday..South winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Tuesday night..Southeast winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds.
Wednesday..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday night..Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms after midnight.
Thursday..South winds 15 to 20 knots. Waves 3 to 5 feet. Showers and Thunderstorms likely.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 336 Am Cdt Sun Mar 26 2017
Synopsis.. High pressure centered across the eastern gulf will overspread the area today and remain in control of the coastal waters through Wednesday. By Thursday, another area of low pressure will affect the coastal waters.

7 Day Forecast for Marine Location Near Metairie, LA
   Hourly   EDIT   Help
location: 30.03, -90.11     debug


Area Discussion for - New Orleans/Baton Rouge, LA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 klix 260423
afdlix
area forecast discussion
national weather service new orleans la
1123 pm cdt Sat mar 25 2017

Aviation
Vfr conditions initially should see marine layer cloud deck advect
overnight for a period of MVFR ceilings and radiational fog from
residual moisture of earlier rainfall. Conditinos should improve
toVFR by mid-morning and prevailing through the early evening
hours before marine layer advection MVFR cloud deck returns
towards latter portion of valid TAF period and beyond. 24/rr
decision support...

dss code... Green
deployed... None.

Activation... None.

Activities... None.

Decision support service (dss) code legend:
green = no weather impacts that require action
blue = long fused watch/warning/advisory in effect or high
visibility event
yellow = heightened impacts with short fused
watch/warning/advisory issuances; radar support
orange = high impacts - slight to moderate risk of severe weather;
nearby tropical events, hazmat or other large episodes
red = full engagement for moderate risk of severe weather; direct
tropical threats; events of national significance.

Prev discussion /issued 722 pm cdt Sat mar 25 2017/
update...

updated coastal waters forecast to remove small craft advisory
headline. Also updated enhanced hazardous weather outook graphics
and hazardous weather outlook text product for the all clear for
the remainder of the evening. No other changes at this time. 24/rr
prev discussion... /issued 430 pm cdt Sat mar 25 2017/
short term... Convection impacted the region much of the day. First
line of storms never quiet made it to the pearl river and the
southern edge of the line ended up sagging way back to the southwest
into south-central and even southwestern la. Convection fired along
the cold front back in southeast tx and moved into southwest la but
additional convection that wasn't anticipated fired between the two
main lines (basically the southern edge of the first line that was
left behind). This activity filled in and moved into the region late
this morning bringing about numerous reports of small hail and a few
severe hail reports upt to 2 inches around pearl river and the
pearl river wildlife management area.

Tonight and tomorrow... Should be quiet for the most parts as the
system responsible for today's storms lifts north and the trough
axis pushing east of the region. That said the cold front
associated with this system will stall just off to our northwest
this evening and then quickly lifting north through the lower ms
valley as a warm front tomorrow morning. This will lead to
dewpoints remaining in the 60s and increasing tomorrow with a warm
day on tap. H925 temps of 19-20c suggest highs in the lower 80s
with a few locations likely touching 85-86. Tomorrow should be dry
but maybe a rogue shower or two could develop. Rain chances will
be a tad higher Mon and tue.

As for the beginning of the work week the next system will quickly
be pushing into the lower ms valley. This system will be a little
weaker but will be moving more east instead of lifting north. This
will try to drive a cold front towards the region and provide
forcing for showers and thunderstorms mainly across the northern
half of the cwa. Once again the cold front will likely stall out
but it could actually just sneak into the CWA and provide focus
for afternoon showers and thunderstorms across the north Tuesday.

As for severity Monday afternoon could have a few potent storms. A
mid level jet core of 45-50 kts will swing through the northern
portions of the cwa. This combined with 1000-15 j/kg sfc based cape
and mid level lapse rates around 6.5-7 c/km. Not anticipating many
but a few storms could be capable of producing severe hail and wind
gusts. Again this is mainly across the north as the forcing quickly
weakens the closer we get to the coast.

Long term... Main focus in the long term is the system around the
end of the work week. There are some timing and strength difference.

Another potent storm system is expected to drop south along the pac
coast before deepening and eventually closing off over the 4
corners. It never quite becomes cut off so it continue to slide east
into the plains but the GFS is deeper, slightly slower, further
south and a stronger frontal passage. The ECMWF on the other hand is
still deep with the system but has more of a connection with the
northern stream so it is a tad faster, further north, and a messier
frontal passage Thursday/Thursday night. Will stick with a blend of
the models but will show high pops for both Thursday and Thursday
night. If the GFS soln comes to fruition then the risk for severe
weather will be higher Thursday and SPC is outlooking the area just
off to our northwest for Wednesday and into Thursday. /cab/
aviation...

the convective threat is waning with all of the terminals free of
thunderstorm threat in the next two hours. A period ofVFR
conditions should take hold at all of the terminals after 00z and
then continue through around 08z. After 08z, the combination of
light boundary layer flow and ample low level moisture should result
in a period of low ceilings and fog at all of the terminals.

Ceilings should drop to between 300 and 500 feet and visibilities
could fall to 1 mile or less at a few of the terminals.

Kmcb... Kbtr... And khdc have the highest probability of seeing lifr
and vlifr visibility restrictions. 32
marine...

the pressure gradient over the coastal waters will weaken a bit
tonight allowing for the onshore flow to decrease to 10 to 15 knots
through tomorrow. Seas should also drop to 2 to 4 feet in the open
gulf waters by tomorrow afternoon. However, another low pressure
system will pass north of the area on Monday. This system should
increase the pressure gradient enough over the gulf to push winds
back into exercise caution range of 15 to 20 knots. As the low
moves away Monday night, winds should relax back to 10 to 15 knots
and remain in that range through Tuesday evening. This brief
respite in stronger onshore flow will give way to another round of
small craft advisory conditions for Wednesday and Thursday as a much
stronger low pressure system passes north of the area. Seas will
respond to this increase in winds and rise back to around 7 to 8
feet in the offshore waters. 32
decision support...

dss code... Yellow.

Deployed... None.

Activation... None.

Activities... Monitoring severe weather potential.

Decision support service (dss) code legend:
green = no weather impacts that require action
blue = long fused watch/warning/advisory in effect or high
visibility event
yellow = heightened impacts with short fused
watch/warning/advisory issuances; radar support
orange = high impacts - slight to moderate risk of severe weather;
nearby tropical events, hazmat or other large episodes
red = full engagement for moderate risk of severe weather; direct
tropical threats; events of national significance.

Preliminary point temps/pops
Mcb 62 84 64 82 / 30 10 10 30
btr 65 86 65 83 / 20 10 10 30
asd 64 82 65 83 / 20 10 10 20
msy 68 85 67 82 / 20 10 10 20
gpt 66 82 66 78 / 40 10 10 20
pql 65 82 65 81 / 50 10 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
NWCL1 - 8761927 - New Canal, LA 0 mi43 min SE 1.9 G 2.9 65°F 71°F1014.8 hPa
CARL1 7 mi43 min 55°F
FREL1 17 mi43 min S 2.9 G 5.1 66°F 1013.8 hPa65°F
BYGL1 - 8762482 - Bayou Gauche, LA 23 mi43 min Calm G 1 67°F 72°F1015 hPa
SHBL1 - 8761305 - Shell Beach, LA 26 mi43 min S 8 G 11 67°F 73°F1015.1 hPa
OSTF1 - Stennis Test Facility 35 mi83 min Calm G 0 60°F 1015.9 hPa (-0.5)60°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 46 mi43 min SSW 5.1 G 8 69°F 71°F1015 hPa

Wind History for New Canal Station, LA
(wind in knots)    EDIT      (on/off)   Help
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
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
Last
24hr
S4
G7
S6
S6
G11
S8
G12
S10
G15
S8
G12
SW9
G15
S8
G14
S15
G25
W11
G18
NW6
G10
S5
G8
S6
G10
S5
G9
S6
G9
S5
G8
S4
G7
S4
S4
S3
S1
SE2
SE2
SE1
1 day
ago
SE4
G8
SE3
G7
SE4
G11
SE4
G10
SE7
G20
S10
G17
SE4
G12
SE3
G10
SE5
G14
SE8
G16
S5
G10
SE6
G12
SE3
G10
SE6
G12
SE6
G17
SE6
G15
SE10
G18
SE3
G11
SE5
G9
SE5
G10
SE6
G12
SE4
G10
S5
G9
S4
2 days
ago
N3
E5
E11
E8
E6
G9
SE3
G15
E3
G12
E4
G11
E8
G14
E4
G11
E5
G11
E3
G8
SE2
G8
E1
G5
SE1
G6
SE4
G7
SE4
G11
SE3
G7
SE4
G8
SE5
G12

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans, New Orleans Lakefront Airport, LA4 mi20 minSE 37.00 miOvercast67°F66°F97%1014.4 hPa
New Orleans, New Orleans International Airport, LA8 mi20 minS 310.00 miOvercast69°F66°F90%1015.1 hPa
New Orleans, Naval Air Station - Alvin Callender Field, LA15 mi18 minN 010.00 miOvercast0°F0°F%1014.9 hPa

Wind History from NEW (wind in knots)
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
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
Last 24hrS9SE9SE9SE12S15S17
G25
S19
G24
S14S19
G26
W22
G34
NW19SW7S12SE12S11S10S11S9S7S7SE4SE4SE3SE3
1 day agoSE10SE12SE14SE14SE21
G26
SE17
G24
SE20
G28
SE17
G26
SE19
G25
SE18
G24
SE15
G23
SE14SE13SE14SE19
G24
SE18
G24
SE15
G24
SE17
G24
SE16
G22
SE20
G26
SE15
G25
SE16
G22
S15S8
2 days agoE8E7E9E8E8SE12SE13E13E13E13E14E13E14E14E16E14SE15SE12SE13SE9SE14
G19
SE13SE14SE12

Tide / Current Tables for New Canal USCG station, Lake Pontchartrain, Louisiana
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
New Canal USCG station
Click for Map
Sun -- 06:04 AM CDT     Moonrise
Sun -- 06:56 AM CDT     Sunrise
Sun -- 07:04 AM CDT     0.35 feet High Tide
Sun -- 05:46 PM CDT     0.22 feet Low Tide
Sun -- 05:59 PM CDT     Moonset
Sun -- 06:38 PM CDT     0.22 feet High Tide
Sun -- 07:15 PM CDT     Sunset
Sun -- 08:57 PM CDT     0.20 feet Low Tide
Sun -- 09:58 PM CDT     0.21 feet High Tide
Sun -- 11:53 PM CDT     0.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.20.30.30.30.30.30.40.30.30.30.30.30.30.20.20.20.20.20.20.20.20.20.2

Tide / Current Tables for Michoud Substation, ICWW, Louisiana
   EDIT      (on/off)   Help   One Week of Data
Michoud Substation
Click for Map
Sun -- 03:07 AM CDT     0.98 feet High Tide
Sun -- 06:03 AM CDT     Moonrise
Sun -- 06:55 AM CDT     Sunrise
Sun -- 11:45 AM CDT     0.17 feet Low Tide
Sun -- 05:58 PM CDT     Moonset
Sun -- 07:15 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.91110.90.80.60.50.40.20.20.20.20.30.30.40.40.40.50.50.50.50.6

Weather Map and Satellite Images
       (on/off)   Help
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 (5,6,7,8)
      (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.