Thursday, January24, 2019 L-36.com


Marine Weather and Tides
Houma, 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 6:54AMSunset 5:34PM Thursday January 24, 2019 12:09 AM CST (06:09 UTC) Moonrise 9:44PMMoonset 9:43AM Illumination 89% 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
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GMZ550 Coastal Waters From Port Fourchon La To Lower Atchafalaya River La Out 20 Nm- Coastal Waters From The Southwest Pass Of The Mississippi River To Port Fourchon Louisiana Out 20 Mile- 847 Pm Cst Wed Jan 23 2019
.small craft advisory in effect until 6 am cst Thursday...
Rest of tonight..Northwest winds 20 to 25 knots. Seas 8 to 12 feet with occasional seas to 14 feet. Dominant period 9 seconds. Chance of showers early in the evening.
Thursday..North winds 15 to 20 knots easing to near 10 knots in the afternoon. Seas 5 to 8 feet with occasional seas to 9 feet. Dominant period 8 seconds. Waves or seas subsiding to 3 to 6 feet with occasional seas to 6 feet. Dominant period 8 seconds in the afternoon.
Thursday night..North winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Dominant period 8 seconds.
Friday..North winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 7 seconds.
Friday night..Northeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 7 seconds.
Saturday..Northeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Saturday night..Northeast winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Sunday..North winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Sunday night..North winds near 10 knots becoming southeast in the late evening. Seas 1 to 2 feet. Dominant period 7 seconds.
Monday..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 7 seconds.
Monday night..South winds 10 to 15 knots becoming west after midnight. Seas 3 to 5 feet. Dominant period 8 seconds. Chance of showers.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 847 Pm Cst Wed Jan 23 2019
Synopsis..A cold front has pushed through the coastal waters today. High pressure will settle for a short time after Wednesday and another cold front will move through the northern gulf Friday.


7 Day Forecast for Marine Location Near Houma, LA
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location: 29.58, -90.71     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 240136
afdlix
area forecast discussion
national weather service new orleans la
736 pm cst Wed jan 23 2019

Sounding discussion
The upper air release this evening was routine and successful. The
00z sounding indicated a relatively moist but stable sounding. A
shallow layer of dry air was evident below 850 mb in the wake of a
cold front. The column was nearly saturated from 850 to just
above 500 mb. The precipitable water value was 1.29 inches.

Northwest flow was observed near the surface with generally
westerly flow throughout the remainder of the lower levels.

Moderate to strong southwest to south-southwest winds were noted
in the mid and upper levels. 11

Prev discussion issued 249 pm cst Wed jan 23 2019
synopsis...

low pressure over michigan with the trailing cold front soon to
depart the CWA to the east. Still a band of convection with the
front, but it's only produced wind gusts in marine areas. Most
rain amounts in the 1-2 inch range. Still light precipitation well
behind the front, but rain amounts in these areas have been fairly
light. Quite a spread in temperatures across the area, ranging
from 71 at pascagoula at 2 pm, to 46 at new roads. West of the
atchafalaya river, temperatures have fallen into the 30s over much
of western louisiana.

Short term...

precipitation will continue to shift eastward tonight with all
areas dry by midnight. Very small chance that a little bit of
frozen precipitation could occur on the backside of the
precipitation shield, but the threat is very low, and not seeing
any indications that it's occurring to our west.

Cold high pressure will move southeast over the next few days,
and be centered over alabama on Saturday. This will keep dry
weather over the area through the weekend. Temperature guidance is
fairly similar for much of the period, with the exception of the
met lows on Friday night, which appear to be too cold. Will
generally trend toward the gfs ECMWF temperature guidance. 35
long term...

a southern stream shortwave moves across the gulf of mexico on
Sunday, but this one will be far enough to the south to keep the
precipitation shield restricted to the gulf. Another shortwave and
cold front will move across the area Monday night or Tuesday,
with at least some scattered showers associated with the frontal
passage. Once again, at least a small potential for frozen
precipitation on the back edge of the departing precipitation
field, but threat not high enough to carry 6 days out in the
forecast. Another cold blast behind that system, but at least at
this point, no indication that it will be any colder than the last
few systems. 35
aviation...

MVFR and occasionally ifr conditions will continue through much of
the evening as lingering showers associated with cold front continue
to affect the area. Gusty northwest winds behind the front will
gradually ease through the night, with the exception of terminals
along the immediate south shore of lake pontchartrain where it will
likely remain gusty through the early morning. Showers should come
to an end from west to east beginning around 00z for kbtr and kmcb
and continuing through 03z for kgpt. Similarly, low ceilings should
improve from west to east after midnight.

Marine...

a cold front will continue sweeping eastward through the coastal
waters this evening. In the wake of the front expect strong
northwest winds with gusts in the 30 to 35 knot range. Winds and
seas will gradually ease beginning late tonight and continuing
through tomorrow morning. While winds are forecast to drop below
advisory criteria by sunrise, seas will take a little bit longer to
respond and the small craft advisory may need to be extended through
the morning hours due to hazardous seas - mainly across the open
gulf waters. Beginning tomorrow, high pressure remains in control of
the local weather through the weekend and into early next week. The
next front looks to affect the coastal waters toward midweek.

Decision support...

dss code: blue.

Deployed: none.

Activation: none.

Activities: monitoring hazardous conditions over coastal waters
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 30 52 31 50 50 0 0 0
btr 32 54 32 53 30 0 0 0
asd 34 55 33 55 60 0 0 0
msy 37 52 37 54 60 0 0 0
gpt 36 54 35 53 70 0 0 0
pql 35 54 34 55 90 0 0 0

Lix watches warnings advisories
La... None.

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

Ms... None.

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



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BYGL1 - 8762482 - Bayou Gauche, LA 21 mi52 min WNW 9.9 G 18 39°F 56°F1017.6 hPa
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 29 mi58 min NNW 7 G 14 38°F 49°F1018.7 hPa
AMRL1 - 8764227 - Amerada Pass, LA 34 mi58 min WNW 12 G 20 40°F 50°F1018.6 hPa
EINL1 38 mi58 min N 25 G 28 41°F 49°F1018 hPa35°F
CARL1 39 mi52 min 46°F
FREL1 39 mi52 min NW 5.1 G 12 37°F 1016.4 hPa
KXPY 41 mi35 min NNW 15 G 27 43°F 39°F
NWCL1 - 8761927 - New Canal, LA 44 mi58 min WNW 8.9 G 17 40°F 54°F1016.9 hPa
GISL1 - 8761724 - Grand Isle, LA 45 mi52 min NW 24 G 27 43°F 60°F1016 hPa

Wind History for West Bank 1, Bayou Gauche, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houma-Terrebonne Airport, LA3 mi15 minNNW 16 G 227.00 miPartly Cloudy37°F31°F79%1017.6 hPa

Wind History from HUM (wind in knots)
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Last 24hrE6CalmE3CalmSE5SE5S7S10S14S12
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1 day agoE9SE9SE6SE11SE14SE10SE13SE15
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2 days agoN4N3NE3NE4E3NE3NE4NE4E7E6E10E10E12SE12SE12E10E8E8E8E8E7E6NE5E7

Tide / Current Tables for Cocodrie, Terrebonne Bay, Louisiana
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Cocodrie
Click for Map
Thu -- 12:39 AM CST     1.08 feet High Tide
Thu -- 06:55 AM CST     Sunrise
Thu -- 09:42 AM CST     Moonset
Thu -- 11:57 AM CST     0.06 feet Low Tide
Thu -- 05:34 PM CST     Sunset
Thu -- 09:43 PM CST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.1110.90.80.70.50.40.20.10.10.10.10.20.30.40.50.60.70.80.80.80.9

Tide / Current Tables for Shell Island, Louisiana
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Shell Island
Click for Map
Thu -- 06:06 AM CST     0.90 feet High Tide
Thu -- 06:58 AM CST     Sunrise
Thu -- 09:45 AM CST     Moonset
Thu -- 11:48 AM CST     -0.61 feet Low Tide
Thu -- 05:36 PM CST     Sunset
Thu -- 08:49 PM CST     0.98 feet High Tide
Thu -- 09:46 PM CST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.60.70.70.80.90.90.80.60.2-0.2-0.5-0.6-0.5-0.4-0.20.10.40.60.80.910.80.6

Weather Map and Satellite Images
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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.
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Wind Forecast for New Orleans/Baton Rouge, LA (1,6,7,8)
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Ground Weather Radar Station New Orleans/Baton Rouge, LA
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Gulf Stream Current


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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.