Saturday, March17, 2018

Marine Weather and Tides
Prairieville, LA

Version 3.4
What's New / NOTES
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.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 7:08AMSunset 7:15PM Saturday March 17, 2018 7:29 AM CDT (12:29 UTC) Moonrise 6:27AMMoonset 6:33PM Illumination 0% Phase: New Moon; Moon at 1 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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GMZ530 Lake Pontchartrain And Lake Maurepas- 317 Am Cdt Sat Mar 17 2018
Today..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers in the morning, then showers likely and slight chance of Thunderstorms in the afternoon.
Tonight..South winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds. Slight chance of showers.
Sunday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers through the day. Chance of Thunderstorms in the afternoon.
Sunday night..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and slight chance of Thunderstorms.
Monday..Southwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday night..West winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds.
Tuesday..Northwest winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Tuesday night..Northwest winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday..Northwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday night..North winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 317 Am Cdt Sat Mar 17 2018
Synopsis..Onshore flow pattern will persist through Monday. A cold front will move through the north central gulf Monday night. High pressure will settle over the northern gulf for the remainder of next week.

7 Day Forecast for Marine Location Near Prairieville, LA
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location: 30.31, -90.94     debug

Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 170855
area forecast discussion
national weather service new orleans la
355 am cdt Sat mar 17 2018

Short term
Elevated rain chances will continue today. A weak upper level ridge
will be passing across the area as it follows the trough that
brought rain to the region yesterday. Southeast flow wrapping around
a surface ridge centered near the bahamas will keep dewpoints well
into the mid 60s. Temperatures will moderate to near 80 as heights
increase from the upper ridge aloft. The combo of warming temps and
ample moisture in place will allow for scattered to numerous showers
and a few thunderstorms to develop. Maintained similar pops as
previous forecast.

Meanwhile, an upper level trough is moving into and across the
pacific northwest. This feature will progress east across the lower
rockies on Sunday. Thunderstorm coverage will increase throughout
the CWA as surface pressures begin dropping and lift along a pre-
frontal trough swings through. Increasing wind shear and instability
will provide the potential for low end severe storms... Mainly in
northern portions of the forecast area near southwest mississippi.

Lingering showers will probably persist into Monday morning as the
trough tracks across the lower mississippi valley.

Long term
The actual cold front associated with this early week system will
not get here until Tuesday morning as a secondary nose of the trough
digs south across the central gulf coast. Broad troughing will then
persist across the CWA through much of the rest of next week. This
will keep temps at to below normal during that time frame and a dry
forecast with no rain till possibly the following weekend.


Variable conditions were being observed at the terminals late
this evening... Ranging fromVFR to ifr. In general, MVFR to ifr
conditions will develop and prevail overnight and into early
Saturday as a result of ceilings and or restricted vsbys due to
patchy fog. Isolated lifr category conditions are also possible at
times. Conditions will mostly improve to ifr to MVFR by Saturday
afternoon outside areas of convection. 11

Light to moderate onshore flow will continue through Sunday
before moderate to possibly strong onshore flow develops Monday as
a strong sfc low gets going over the mid and lower ms valley.

This will drive a cold front through the coastal waters overnight
Monday with strong offshore winds in its wake. Scy conditions will
develop and continue through Tuesday night before winds finally
begin to relax Wednesday with high pressure building in. Cab

Decision support
Dss code: blue.

Deployed: none.

Activation: none.

Activities: monitoring river flooding
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; enhanced 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 79 64 78 65 50 20 60 40
btr 79 65 80 65 70 20 60 30
asd 77 64 78 66 60 20 40 30
msy 77 65 79 66 60 20 40 40
gpt 74 64 75 68 60 20 40 40
pql 75 64 77 66 50 20 40 40

Lix watches warnings advisories
La... None.

Gm... None.

Ms... None.

Gm... None.

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FREL1 31 mi47 min W 1.9 G 2.9 67°F 1014.4 hPa67°F
BYGL1 - 8762482 - Bayou Gauche, LA 45 mi41 min Calm 65°F 66°F1015.7 hPa
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 47 mi41 min S 2.9 G 4.1 67°F 58°F1015.4 hPa
NWCL1 - 8761927 - New Canal, LA 48 mi41 min S 1.9 G 2.9 67°F 63°F1015.4 hPa

Wind History for East Bank 1, Norco, B. LaBranche, LA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baton Rouge, Baton Rouge Metropolitan, Ryan Field, LA19 mi36 minWSW 41.50 miFog/Mist68°F66°F96%1015.2 hPa

Wind History from BTR (wind in knots)
Last 24hrNE5E6SE5SE5S8S10S9S13S12SW7S13S9S9S9S10S8S10S11S7S7S8S6SW7SW4
1 day agoNE3E5SE8S5S8S9
2 days agoCalmCalmN6NE6N5N54W74W9W7NW5CalmNW3CalmCalmNE3CalmCalmCalmCalmCalmCalmNE4

Tide / Current Tables for East Bank 1, Norco, Bayou Labranche, Louisiana
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East Bank 1
Click for Map
Sat -- 05:53 AM CDT     0.30 feet High Tide
Sat -- 06:59 AM CDT     0.30 feet Low Tide
Sat -- 07:08 AM CDT     Sunrise
Sat -- 07:24 AM CDT     Moonrise
Sat -- 08:14 AM CDT     New Moon
Sat -- 08:19 AM CDT     0.30 feet High Tide
Sat -- 01:38 PM CDT     0.23 feet Low Tide
Sat -- 01:51 PM CDT     0.23 feet High Tide
Sat -- 04:14 PM CDT     0.21 feet Low Tide
Sat -- 05:42 PM CDT     0.22 feet High Tide
Sat -- 07:11 PM CDT     Sunset
Sat -- 07:30 PM CDT     Moonset
Sat -- 07:42 PM CDT     0.21 feet Low Tide
Sat -- 08:57 PM CDT     0.21 feet High Tide
Sat -- 10:41 PM CDT     0.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Tchefuncta River, Lake Pontchartrain, Louisiana
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Tchefuncta River
Click for Map
Sat -- 07:08 AM CDT     Sunrise
Sat -- 07:24 AM CDT     Moonrise
Sat -- 08:14 AM CDT     New Moon
Sat -- 09:27 AM CDT     0.36 feet High Tide
Sat -- 06:32 PM CDT     0.08 feet Low Tide
Sat -- 07:10 PM CDT     Sunset
Sat -- 07:29 PM CDT     Moonset
Sat -- 11:44 PM CDT     0.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (8,2,3,4)
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Ground Weather Radar Station New Orleans/Baton Rouge, LA
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weather_mapweather_map weather_map

Gulf Stream Current

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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 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 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.