Monday, August19, 2019 L-36.com


Marine Weather and Tides
Zachary, LA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:31AMSunset 7:43PM Monday August 19, 2019 10:16 PM CDT (03:16 UTC) Moonrise 9:20PMMoonset 9:02AM Illumination 80% Phase: Waning Gibbous; Moon at 19 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- 935 Pm Cdt Mon Aug 19 2019
Rest of tonight..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of Thunderstorms early in the evening. Chance of showers through the night. Slight chance of Thunderstorms after midnight.
Tuesday..North winds near 5 knots becoming southeast early in the afternoon, then becoming south late in the afternoon. Waves less than 1 foot. Dominant period 4 seconds. Chance of showers and Thunderstorms through the day.
Tuesday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of Thunderstorms early in the evening. Chance of showers through the night.
Wednesday..Southwest winds near 5 knots becoming south in the late morning and afternoon. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers through the day. Chance of Thunderstorms in the late morning and afternoon.
Wednesday night..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of Thunderstorms early in the evening. Slight chance of showers in the evening.
Thursday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms through the day.
Thursday night..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Friday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers in the morning. Chance of Thunderstorms through the day. Showers likely in the afternoon.
Friday night..Southwest winds 5 to 10 knots becoming west after midnight. Waves 1 foot or less. Slight chance of showers.
Saturday..West winds near 5 knots becoming south in the late morning and afternoon. Waves 1 foot or less. Chance of showers in the morning. Chance of Thunderstorms through the day. Showers likely in the afternoon.
Saturday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Slight chance of showers through the night.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 935 Pm Cdt Mon Aug 19 2019
Synopsis..Ridge extension of bermuda high pressure area across the northern gulf of mexico will persist through the week. Unsettled pattern will provide several periods of Thunderstorms over the coastal waters through Saturday.


7 Day Forecast for Marine Location Near Zachary, LA
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location: 30.66, -91.16     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 192102
afdlix
area forecast discussion
national weather service new orleans la
402 pm cdt Mon aug 19 2019

Short term
Surface high pressure is noted in the meso- and synoptic scale
analyses but the weather is being driven by some mid- to upper
level instability, that is convectively induced. A rather
prominent MCV has been detected off the southern end of the
chandeleur islands within the radar presentation that has
disrupted the typical land sea breeze circulation and focused
convection on outflow interactions in a very tropical air mass.

Precipitable water values of 2.34" this morning likely enriched to
over 2.50" prior to onset of rainfall. Rain rates at the office
(kasd) did attain 0.12" min rates (7.2" hr instantaneous) for at
least 15-20 minutes at peak intensity, with a measured
accumulation of 2.37" in about 70 minutes. 500 mb pattern shows a
general weakness between the continental ridge over texas and the
bermuda ridge. This is aiding in providing less subsidence and
somewhat enhanced omega to optimize the diurnal convective
pattern. Suffice to say, Tuesday may not look much different from
today with a repeat of storms initially on land breeze convergence
in the near shore waters that ultimately evolves into outflow
focused convection over land in the late morning and early
afternoon hours. Rain rates can once again be on the torrential
side. Near seasonable warmth with relief coming once rains begin
and spread in coverage.

Long term
Overall synoptic pattern does not really change much from day to
day though the rainfall coverage may flex around based on
wherever outflow convergences take place but it does appear a
more typical land-sea breeze circulation becomes better
established Wednesday onward. Temperatures to be influenced by
rain coverage but should reach near normal levels before becoming
rain cooled.

Aviation
Vfr conditions outside of convective influences, but lowering to
mfvr CIGS and ifr vsby in torrential rainfall at times mainly int
he daylight hours.

Marine
Bermuda ridge flow pattern to maintain light winds and low seas
that will become locally enhanced near thunderstorms complexes
that develop mainly in the overnight hours.

Decision support
Dss code: blue.

Deployed: none.

Activation: none.

Activities: marginal risk excessive rainfall.

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 rainfall, or direct tropical threats; events of
national significance.

Preliminary point temps pops
Mcb 72 91 72 90 20 50 20 60
btr 74 90 75 90 20 70 20 70
asd 73 90 73 90 40 70 30 60
msy 76 89 77 90 40 80 30 60
gpt 74 87 74 88 40 60 40 50
pql 72 89 73 90 40 70 40 50

Lix watches warnings advisories
La... None.

Gm... None.

Ms... None.

Gm... None.

24 rr


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWCL1 - 8761927 - New Canal, LA 71 mi46 min S 2.9 G 4.1 1016.2 hPa

Wind History for East Bank 1, Norco, B. LaBranche, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baton Rouge, Baton Rouge Metropolitan, Ryan Field, LA8 mi83 minENE 87.00 miLight Rain78°F75°F93%1016.2 hPa
New Roads False River Regional Airport, LA17 mi60 minN 010.00 miFair77°F75°F94%1016.3 hPa

Link to 5 minute data for KBTR

Wind History from BTR (wind in knots)
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Last 24hrSE4S6NE5CalmSE3CalmCalmCalmNE3CalmCalm4W5NE8S8SW11S10SW5S7SE8NE7W6E8NE3
1 day agoS5S7CalmCalmNE3CalmCalmNE3CalmCalmSW5SW7W7SW6S6SW12W8W5S10S10S11SE6S8E3
2 days agoS3CalmCalmSW5W4N3NE3CalmCalmCalmCalmW4NE3CalmE6CalmSW4SE8CalmS7SE5S7S5SE4

Tide / Current Tables for Weeks Bay, Vermilion Bay, Louisiana
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Weeks Bay
Click for Map
Mon -- 03:11 AM CDT     0.48 feet Low Tide
Mon -- 06:37 AM CDT     Sunrise
Mon -- 09:35 AM CDT     1.37 feet High Tide
Mon -- 10:04 AM CDT     Moonset
Mon -- 03:56 PM CDT     0.84 feet Low Tide
Mon -- 07:44 PM CDT     Sunset
Mon -- 09:08 PM CDT     1.22 feet High Tide
Mon -- 10:22 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.70.50.50.50.60.811.21.41.41.31.21.10.90.90.80.911.11.21.21.21.1

Tide / Current Tables for Cote Blanche Island, West Cote Blanche Bay, Louisiana
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Cote Blanche Island
Click for Map
Mon -- 02:55 AM CDT     0.45 feet Low Tide
Mon -- 06:36 AM CDT     Sunrise
Mon -- 10:04 AM CDT     Moonset
Mon -- 10:10 AM CDT     1.28 feet High Tide
Mon -- 03:40 PM CDT     0.79 feet Low Tide
Mon -- 07:43 PM CDT     Sunset
Mon -- 09:43 PM CDT     1.14 feet High Tide
Mon -- 10:21 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.60.50.40.50.60.80.91.11.21.31.31.110.90.80.80.80.911.11.11.11.1

Weather Map and Satellite Images
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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 (23,6,7,8)
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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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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.