Monday, December10, 2018 L-36.com


Marine Weather and Tides
Madisonville, 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 6:47AMSunset 5:02PM Monday December 10, 2018 5:43 PM CST (23:43 UTC) Moonrise 9:27AMMoonset 8:05PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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- 243 Pm Cst Mon Dec 10 2018
.small craft exercise caution in effect from 6 pm cst this evening through late tonight...
Tonight..North winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Tuesday..North winds 10 to 15 knots becoming northwest near 5 knots early in the afternoon, then becoming west late in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday night..Southeast winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds.
Wednesday..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Wednesday night..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers after midnight.
Thursday..South winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers in the morning, then showers and slight chance of Thunderstorms in the afternoon.
Thursday night..South winds 10 to 15 knots becoming west in the late evening. Waves 2 to 4 feet. Dominant period 4 seconds. Showers in the evening. Slight chance of Thunderstorms through the night. Showers likely after midnight.
Friday..West winds near 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Slight chance of showers.
Friday night..West winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Saturday..Northwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Saturday night..Northwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 243 Pm Cst Mon Dec 10 2018
Synopsis..High pressure will build across the central gulf coast through Tuesday before shifting east of the area on Wednesday. A cold front will sweep across the coastal waters late Thursday and Thursday night.


7 Day Forecast for Marine Location Near Madisonville, LA
   Hourly   EDIT   Help
location: 30.38, -90.16     debug


Area Discussion for - New Orleans/Baton Rouge, LA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 klix 102201
afdlix
area forecast discussion
national weather service new orleans la
401 pm cst Mon dec 10 2018

Discussion
Really only two weather concerns in the 7 day forecast
period... Low temperatures tonight and thunderstorm heavy rain
threat with the frontal system later this week.

Regarding tonight, expect temperatures to plummet after sunset as
clear skies, light winds and low dewpoints allow for efficient
radiative cooling. Expect to see widespread freezing temperatures
across the area. Temps forecast to bottom out in the upper 20s and
lower 30s along north of the i-10 12 corridor and generally in the
mid to upper 30s south of the tidal lakes. Where it gets a little
tricky is through the river parishes and along the west bank of
the mississippi river through the south shore. One thing is fairly
certain... And that is that the more urban areas should remain
above freezing. All of the available guidance even suggests belle
chasse, which is one of the typically colder spots, will remain
just above freezing. However, the swath from houma up to the river
and nortwestward will likely hit freezing for a few hours near
daybreak. Per local policy, freeze warnings are issued for every
freeze across areas for areas from donaldsonville to lake
pontchartrain and southward. This means that a freeze warning will
be issued for assumption, st. James, st. John, st. Charles, upper
terrebonne and upper lafourche from 3am until 8am tomorrow
morning.

Temps should rise fairly quickly in the morning once the Sun comes
up. Expect highs in the mid to upper 50s. Lows should be a few
degrees warmer tomorrow night, bottoming out in the mid 30s north
and the upper 30s and lower 40s south.

Return flow starts to kick in on Wednesday as high pressure shifts
eastward and winds turn southerly ahead of a vigorous frontal
system taking shape over the plains states. Models remain in
fairly good agreement with respect to timing on this system, but
still have differences in both the intensity and placement of the
surface and upper lows. GFS continues to have the deeper and
farther north solution. Again, while these differences will affect
some nuances of the forecast, the overall pattern is fairly
similar and a general blend of the guidance has been used for our
local weather.

Both the GFS and the euro indicate a vigorous trough will dive
southward Wednesday night into Thursday morning causing a surface
low to deepen over texas as it moves eastward toward the middle
mississippi valley. The tightening pressure gradient should result
in stronger winds, locally which will help pump gulf moisture
back into the area. Dewpoints are forecast to recover into the low
to 60s by Thursday afternoon. There still appears to be a fair
amount of instability and lift along the front as it passes
through the area late Thursday afternoon and Thursday evening.

Depending on how the exact details of this system play out, there
could be a squall line along ahead of the front. There will likely
be a non-negligible severe weather threat with this system, but
for the time being, the probability of severe weather is below the
threshold to be included in spc's severe weather outlook. The
system definitely bears continued monitoring over the next few
days as details become clearer.

Behind the front, both models suggest wrap around moisture will
keep things cloudy with some lingering showers into Friday, so
will maintain the 20 to 30 percent pops for Friday and Friday
afternoon. Of note, this kind of stacked and well-developed system
will typically include a dry slot feature, so as the details of
the dry slot feature become clearer, pop forecasts may need to be
adjusted. Behind the front, expect temperatures to fall to near or
just below normal for this time of year through the weekend.

Aviation
Vfr conditions are expected for all TAF sites through Wednesday
00z.

Marine
Cold air advection will decrease this evening and overnight.

However, north winds will increase slightly this evening through
midnight and ease after 2am Tuesday morning. Surface high pressure
system becomes more centered over the deep south. As a result,
winds will decrease early Tuesday and continue subsiding through
Wednesday. In addition, wind direction will veer from the north to
the southeast during this period and seas will subside as well.

Another strong storm system will begin to affect the waters Thursday
into Thursday with south and southwest winds increasing back into
the 20 to 25 knot range and seas climbing back above 7 feet over the
gulf waters and sounds. Due to the close proximity of the surface
low and deep upper level low over the deep south, strong westerly
winds are expected Thursday night through Saturday morning and a
period of gale force winds may develop as the strong storm system
pulls away from the region. West to northwest winds will finally
ease to 10 to 15 knots by late Saturday night.

Decision support
Dss code: blue.

Deployed: none.

Activation: none.

Activities: small craft advisory.

Widespread freezing conditions tonight.

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 28 57 34 63 0 0 0 0
btr 29 56 36 64 0 0 0 0
asd 30 56 34 64 0 0 0 0
msy 35 54 40 65 0 0 0 10
gpt 32 55 37 62 0 0 0 0
pql 32 57 34 65 0 0 0 0

Lix watches warnings advisories
La... Freeze warning from 3 am to 8 am cst Tuesday for laz056>060-065.

Gm... Small craft advisory until 6 pm cst this evening for gmz532-536-
538-550-552-555-557-570-572-575-577.

Ms... None.

Gm... Small craft advisory until 6 pm cst this evening for gmz536-538-
550-552-555-557-570-572-575-577.

Aviation marine... 18
rest of discussion... 95 dm


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
FREL1 23 mi43 min NW 1.9 G 5.1 1024.3 hPa (+1.3)
NWCL1 - 8761927 - New Canal, LA 25 mi49 min WNW 6 G 9.9 53°F 56°F1024.8 hPa
CARL1 31 mi43 min 48°F
BYGL1 - 8762482 - Bayou Gauche, LA 43 mi43 min WNW 6 G 8.9 51°F 56°F1025.4 hPa (+1.1)
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 44 mi43 min NNW 9.9 G 14 53°F 55°F1024.2 hPa (+1.6)
SHBL1 - 8761305 - Shell Beach, LA 44 mi43 min WNW 13 G 14 52°F 57°F1024.5 hPa (+0.8)

Wind History for New Canal Station, LA
(wind in knots)    EDIT      (on/off)   Help
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
1
PM
2
PM
3
PM
4
PM
5
PM
Last
24hr
NW3
G7
N7
G18
N15
G20
N12
G16
N11
G18
N12
G19
NW8
G17
NW9
G16
N15
NW2
G9
NW6
G11
NW4
G9
NW4
G11
NW3
G8
N4
G11
NW7
G14
NW4
G9
NW5
G10
NW5
G9
NW5
G11
W5
G9
W4
G10
NW4
G8
NW7
G12
1 day
ago
NW2
G6
NW3
G7
NW5
G9
NW8
G14
W4
G12
NW6
G12
W6
G15
W8
G13
W6
G13
NW8
G13
NW8
G16
NW8
G15
NW8
G15
NW9
G19
NW9
G16
NW8
G13
NW9
G14
NW8
G16
NW6
G16
NW4
G12
NW3
G17
NW5
G15
NW5
G14
NW4
G12
2 days
ago
E2
G6
E4
G13
E6
G14
E8
G14
E8
G14
E10
G13
E11
G15
E13
G16
E16
G20
E13
G18
E8
G13
E9
G15
E10
G14
E4
G13
E6
G13
E4
G10
E8
G12
E3
G7
E4
G9
W14
G18
S10
G16
SW8
G11
W2
G5
W9
G12

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hammond, Hammond Municipal Airport, LA17 mi48 minNNW 410.00 miFair48°F32°F54%1025.4 hPa
Slidell, Slidell Airport, LA18 mi50 minNNW 410.00 miFair51°F34°F52%1024.5 hPa
New Orleans, New Orleans Lakefront Airport, LA24 mi50 minWNW 1410.00 miFair53°F35°F51%1024.3 hPa

Wind History from HDC (wind in knots)
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
1
PM
2
PM
3
PM
4
PM
5
PM
Last 24hrN8
G16
N9NW6N8N8NW7N5NW4NW7NW8NW4N9NW4CalmNW7NW6N7NW7NW9NW8
G16
N8NW7NW7NW3
1 day agoN5CalmNW5NW6NW8NW5NW9NW8NW8NW7W9NW10
G16
NW11
G18
NW13
G18
NW7NW12NW9NW11NW9N9
G15
NW11
G16
NW12
G16
NW8
G15
NW9
G15
2 days agoSE8E6E5E6E8E8E5E7E8E8E8E8
G18
E5E8E8E5E9E6NE8E5NW6N5N5N6

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
Mon -- 03:56 AM CST     1.15 feet High Tide
Mon -- 06:44 AM CST     Sunrise
Mon -- 09:25 AM CST     Moonrise
Mon -- 03:58 PM CST     -0.29 feet Low Tide
Mon -- 05:00 PM CST     Sunset
Mon -- 08:05 PM CST     Moonset
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
0.70.911.11.21.110.90.80.60.40.20-0.1-0.2-0.3-0.3-0.3-0.2-0.100.20.30.5

Tide / Current Tables for Long Point, Lake Borgne, Louisiana
   EDIT      (on/off)   Help   One Week of Data
Long Point
Click for Map
Mon -- 01:16 AM CST     1.04 feet High Tide
Mon -- 06:43 AM CST     Sunrise
Mon -- 09:24 AM CST     Moonrise
Mon -- 12:31 PM CST     -0.26 feet Low Tide
Mon -- 04:58 PM CST     Sunset
Mon -- 08:03 PM CST     Moonset
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
11110.90.70.50.30.2-0-0.1-0.2-0.3-0.3-0.2-0.2-0.100.20.30.40.60.70.8

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 (18,4,5,8)
      (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.