Thursday, January24, 2019 L-36.com


Marine Weather and Tides
Mandeville, LA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:52AMSunset 5:29PM Thursday January 24, 2019 5:09 AM CST (11:09 UTC) Moonrise 9:41PMMoonset 9:41AM Illumination 87% Phase: Waning Gibbous; Moon at 18 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- 356 Am Cst Thu Jan 24 2019
.small craft advisory in effect until 6 am cst early this morning...
Today..Northwest winds 20 to 25 knots easing to near 15 knots early in the morning and near 10 knots in the afternoon. Waves 3 to 5 feet easing to 1 to 2 feet. Dominant period 4 seconds.
Tonight..North 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.
Friday night..Northeast winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds.
Saturday..Northeast winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds.
Saturday night..Southeast winds near 5 knots becoming northwest after midnight. Waves less than 1 foot. Dominant period 4 seconds.
Sunday..Northwest winds near 5 knots becoming southwest late in the afternoon. Waves less than 1 foot. Dominant period 4 seconds.
Sunday night..Southwest winds 5 to 10 knots. Waves less than 1 foot. Dominant period 4 seconds.
Monday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Monday night..South winds near 10 knots becoming west after midnight. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers after midnight.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 356 Am Cst Thu Jan 24 2019
Synopsis..High pressure with colder air will build into the central gulf coast region today through the weekend.


7 Day Forecast for Marine Location Near Mandeville, LA
   Hourly   EDIT   Help
location: 30.33, -90.08     debug


Area Discussion for - New Orleans/Baton Rouge, LA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 klix 240920
afdlix
area forecast discussion
national weather service new orleans la
320 am cst Thu jan 24 2019

Short term Deep layer northwest flow will remain in firm
control of the gulf south through Saturday. Strong subsidence and
a deep pool of dry air will keep skies clear through the end of
the week. A thermal trough will also linger over the region, and
this will keep temperatures cooler than average through Saturday.

Daytime highs will only climb into the 50s today and tomorrow.

Some slight modification in the airmass on Saturday should allow
for highs closer to 60 degrees. The clear and dry conditions will
allow for a fairly large diurnal range, and expect to see
overnight lows fall into the 30s tonight and tomorrow night across
all of the forecast area. By Saturday night, temperatures should
rise slightly into the upper 30s and lower 40s.

Long term The benign weather conditions will persist on Sunday
and Monday as a more zonal flow pattern begins to take hold in the
upper levels. A surface high will remain in firm control of the
region, and expect to see continued mostly clear skies and low
humidity values. The biggest change will be a return to more
normal temperatures with highs in the 60s both Sunday and Monday
and overnight lows in the upper 30s and lower 40s.

Another northern stream trough will begin to dig into the eastern
third of the nation Monday night into Tuesday, and this will drive
a cold front through the forecast area late Monday night and early
Tuesday. Although the duration of moisture advection into the
region will be limited to only a few hours, there should be enough
forcing along the front to produce scattered showers as it slices
through the cwa. Have put chance pop in the forecast from late
Monday night through Tuesday afternoon to reflect this.

Temperatures will be significantly cooler on Tuesday as strong
cold air advection takes hold by Tuesday morning. Highs should
only warm into the upper 40s over northern zones and the upper 50s
over southern zones. Strong subsidence and dry air advection in
the wake of the front and trough axis will lead to rapidly
clearing skies Tuesday night. These clear skies will persist into
Wednesday and Thursday as high pressure settles over the gulf
south. Strong cold air advection will drive temperatures well
below freezing across most of the CWA Tuesday and Wednesday nights,
and highs on Wednesday and Thursday will be a good 10 degrees
below average in the lower to middle 50s.

Aviation MVFR category CIGS will continue to gradually scatter out and clear
from the west and northwest over the next few hours withVFR
conditions expected to return to kmcb, kasd and knew by around 10z
and kgpt around 11z. Stronger and gusty northwest winds will also
decrease through 12z today. 22 td

Marine Strong winds in the wake of yeserday's cold frontal passage should
undergo steady weakening during the 4 am to 9 am period this morning
as the pressure gradient relaxes due to a lobe of high pressure
moving closer to the central gulf coast region. Have maintained the
small craft advisory in effect through 6 am this morning and added
"small craft exercise caution" headline for all waters except the
tidal lakes from 6 am to 9 am. Winds will be generally 15 knots or
less from late morning through this evening, but then reinforcing
high pressure and cold air advection from the northwest will likely
cycle winds back up to 15 to 20 knots again late tonight and early
Friday morning across the coastal waters. The center of high
pressure should elongate across the central gulf coast region late
Friday into Saturday which is expected to allow the winds to ease to
around 10 knots or less across the marine area. These lighter winds
should mostly prevail until the next strong cold front which looks
to move through the central gulf coast region on Tuesday. 22 td

Decision support
Dss code: blue.

Deployed: none.

Activation: none.

Activities: river flood warnings. Small craft advisory.

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 rain; direct tropical threats; events of national
significance.

Preliminary point temps pops
Mcb 53 30 53 30 0 0 0 0
btr 53 32 55 33 0 0 0 0
asd 54 30 57 31 0 0 0 0
msy 51 37 55 38 0 0 0 0
gpt 53 34 55 33 0 0 0 0
pql 54 31 56 30 0 0 0 0

Lix watches warnings advisories
La... None.

Gm... Small craft advisory until 6 am cst early this morning for
gmz530-532-534-536-538-550-552-555-557-570-572-575-577.

Ms... None.

Gm... Small craft advisory until 6 am cst early this morning for
gmz532-534-536-538-550-552-555-557-570-572-575-577.

32


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 21 mi40 min N 12 G 21 37°F 53°F1017.4 hPa
FREL1 24 mi40 min NNW 6 G 9.9 35°F 1016.4 hPa
CARL1 28 mi40 min 46°F
SHBL1 - 8761305 - Shell Beach, LA 39 mi40 min NNW 17 G 23 38°F 55°F1017.2 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 40 mi40 min N 12 G 18 37°F 53°F1016.4 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 41 mi40 min Calm G 1.9 35°F 54°F1018 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
S3
S4
S2
S4
S6
G10
S11
G17
S14
G19
S13
G19
NW7
G15
NW3
G8
NW2
G8
NW2
W6
W6
W11
G22
NW9
G16
W7
G17
NW11
G19
NW9
G15
N6
G18
NW4
G15
N3
G10
NW4
G17
N13
G21
1 day
ago
SE4
G7
S1
E2
G6
E2
G5
E3
G8
S1
G4
SE5
G12
SE6
G16
SE4
G17
SE7
G17
SE9
G17
SE4
G10
SE4
G11
SE4
G9
E3
G6
E2
G5
SE1
G6
E1
G5
SE1
--
N3
E3
SE2
SE1
2 days
ago
E7
G11
E7
G11
E7
G10
E10
G16
E13
E11
G14
E3
G7
E10
G15
E12
G18
E8
G12
E2
G11
E3
G8
E3
G11
E4
G7
E7
G10
E5
G9
E4
G7
E1
G4
SE1
E1
G6
E1
G4
E1
SE5
G9
SE4
G9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Slidell, Slidell Airport, LA14 mi17 minN 610.00 miOvercast36°F28°F73%1017.1 hPa
New Orleans, New Orleans Lakefront Airport, LA20 mi17 minNNW 1610.00 miOvercast37°F30°F76%1016.7 hPa
Hammond, Hammond Municipal Airport, LA22 mi35 minNNW 410.00 miFair32°F30°F93%1017.6 hPa

Wind History from ASD (wind in knots)
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
5
AM
Last 24hrS5S6S7S5SW5S15
G22
S11NW14
G24
N9N7N5Calm346
G16
6NW5NW8
G15
N10
G18
NW9
G15
NW8NW11
G17
N7N6
1 day agoSE10SE7SE9SE8SE9
G16
E8
G16
SE11
G20
SE9
G21
SE12SE9SE11
G17
SE8
G16
SE9
G17
SE6SE7SE7SE5SE6SE5CalmSE3CalmSE3S4
2 days agoN3CalmCalmE635--E7SE3SE8SE7E3E3E3E3E3E4E3E3E3NE4N4NE5SE9

Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Paris Road Bridge
Click for Map
Thu -- 04:42 AM CST     0.85 feet High Tide
Thu -- 06:53 AM CST     Sunrise
Thu -- 09:39 AM CST     Moonset
Thu -- 04:27 PM CST     -0.24 feet Low Tide
Thu -- 05:29 PM CST     Sunset
Thu -- 09:40 PM CST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
7
pm
8
pm
9
pm
10
pm
11
pm
0.40.50.70.80.80.90.80.70.60.50.30.20.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.1-00.10.2

Tide / Current Tables for Long Point, Lake Borgne, Louisiana
   EDIT      (on/off)   Help   One Week of Data
Long Point
Click for Map
Thu -- 02:02 AM CST     0.77 feet High Tide
Thu -- 06:52 AM CST     Sunrise
Thu -- 09:38 AM CST     Moonset
Thu -- 01:00 PM CST     -0.22 feet Low Tide
Thu -- 05:28 PM CST     Sunset
Thu -- 09:38 PM CST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
7
pm
8
pm
9
pm
10
pm
11
pm
0.70.70.80.80.70.60.50.30.20-0.1-0.2-0.2-0.2-0.2-0.2-0.1-0.100.10.10.20.30.4

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (6,6,7,8)
      (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.