Thursday, December12, 2019
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Marine Weather and Tides
Venice, LA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 6:45AMSunset 5:03PM Thursday December 12, 2019 4:57 AM CST (10:57 UTC) Moonrise 6:40PMMoonset 8:00AM Illumination 100% Phase: Full Moon; Moon at 15 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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GMZ552 Expires:201912122230;;231620 Fzus54 Klix 120950 Cwflix Coastal Waters Forecast National Weather Service New Orleans La 350 Am Cst Thu Dec 12 2019 Pascagoula To Atchafalaya River Out To 60 Mile Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest Ten Percent Of The Waves. Gmz550-552-122230- 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- 350 Am Cst Thu Dec 12 2019
.small craft advisory in effect until 6 am cst early this morning...
Today..Northeast winds 20 knots decreasing to 15 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Dominant period 5 seconds. Chance of showers until late afternoon, then showers likely and slight chance of Thunderstorms late.
Tonight..Northeast winds 15 to 20 knots easing to 5 to 10 knots after midnight. Seas 3 to 5 feet. Dominant period 7 seconds. Patchy fog early in the evening. Slight chance of Thunderstorms until early morning. Chance of showers through the night.
Friday..Northwest winds 5 to 10 knots. Seas 3 to 5 feet. Dominant period 7 seconds. Chance of showers early in the morning. Slight chance of showers in the afternoon.
Friday night..Northwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Slight chance of showers in the evening.
Saturday..Northwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 4 seconds.
Saturday night..Northwest winds 5 to 10 knots becoming south in the late evening. Seas 1 to 2 feet. Dominant period 5 seconds.
Sunday..Southeast winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Sunday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 4 seconds. Slight chance of showers after midnight.
Monday..South winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 5 seconds. Chance of showers in the morning, then showers likely in the afternoon.
Monday night..South winds 10 to 15 knots becoming north 15 to 20 knots after midnight. Seas 3 to 5 feet. Dominant period 6 seconds. Showers likely.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 350 Am Cst Thu Dec 12 2019
Synopsis..An area of low pressure is expected to develop today along a stationary front draped across the north gulf. This low will move into the southeast u.s. Friday night. High pressure will then build into the north gulf through the weekend.


7 Day Forecast for Marine Location Near Venice, LA
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location: 28.94, -89.4     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 121015 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 415 AM CST Thu Dec 12 2019

SHORT TERM. Models are in pretty good agreement in depicting low pressure development along the stationary front situated across the central gulf. This feature remains relatively weak but does cause pressure gradient to tighten today along with inducing isentropic lift rainfall into the area by this afternoon. Temperatures will be greatly influenced by increased cloud cover and eventual rain but should be able to warm into the lower 60s based on offshore temperature trends. Any rain shield associated with the low should move east of the forecast area Friday morning with drier air working in from the west. If clouds clear as anticipated, then upper 60s to perhaps lower 70s are possible Friday afternoon.

LONG TERM. A pretty nondescript weekend is expected with weak surface high pressure settled over the area and somewhat neutral advection. Troughing over the western states amplifies upon approach into the Lower Mississippi Valley to induce cyclogenesis in the central Plains States that brings a cold front through the area Monday night into Tuesday. Currently, SPC is highlighting a 15% chance of severe thunderstorms to our north where better dynamics and frontal forcing is the greatest, but some quasi-linear convective system activity will likely be maintained into the forecast area along and ahead of the front. That front moves off the coast by Tuesday morning, per most guidance, with colder high pressure building in its wake. Temperatures are blend of guidance in the extended portion.

AVIATION. Current VFR conditions across all terminals. As shortwave over west Texas moves closer later today, moisture will return from the Gulf of Mexico with gradually lowering ceilings. Effectively, ceilings will be deteriorating from southeast to northwest, with MVFR ceilings as early as late this morning at KGPT, with all but KMCB and KBTR to MVFR by 21z. By 06z, all except perhaps KMCB should be experiencing IFR ceilings, continuing through the end of the forecast period. While there will be reduced visibilities due to rain during the overnight hours, rain probably will be spotty enough to not carry prevailing reduced visibilities 18 hours out in forecast. Thunder threat too low to carry as well. 35

MARINE. Thermal mixing coupled with gradient tigthening over the north gulf will maintain moderate to strong northeast winds this morning, veering to east by this afternoon. Small craft advisories will remain in effect for the open waters but will likely lower to exercise caution levels later this morning. Gulf low pressure development over the central gulf throughout the day should move northeast towards the eastern Florida panhandle Friday evening. This will usher renewed cold air advection into the north gulf as high pressure takes hold through the weekend. Another cold front enters the gulf next Tuesday morning.

DECISION SUPPORT. DSS code: Blue. Deployed: None. Activation: None. Activities: Forecast support for City of New Orleans. Small Craft Advisories. 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 61 47 65 48 / 10 40 40 20 BTR 61 49 66 50 / 30 30 20 20 ASD 63 47 68 49 / 30 80 30 20 MSY 62 54 67 54 / 40 70 20 20 GPT 60 50 65 51 / 30 90 40 20 PQL 63 48 69 48 / 20 90 50 30

LIX WATCHES/WARNINGS/ADVISORIES. LA . None. GM . Small Craft Advisory until 6 AM CST early this morning for GMZ530-532-534-550-552-570-572.

Small Craft Advisory until 9 PM CST this evening for GMZ536-538- 555-557-575-577.

MS . None. GM . Small Craft Advisory until 6 AM CST early this morning for GMZ532-534-550-552-570-572.

Small Craft Advisory until 9 PM CST this evening for GMZ538-555- 557-575-577.



24/RR 35


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 1 mi57 min NE 14 G 16
BURL1 - Southwest Pass, LA 3 mi57 min 17 G 18
KDLP 15 mi22 min 5.1 61°F 52°F
PILL1 18 mi57 min ENE 5.1 G 8 59°F 51°F1025 hPa (-0.9)
KMDJ 29 mi22 min E 16 66°F 59°F
LOPL1 - Louisiana Offshore Oil Port, LA 33 mi84 min ENE 19 G 23 61°F 4 ft1025.1 hPa50°F
GISL1 - 8761724 - Grand Isle, LA 37 mi57 min NNE 9.9 G 14 63°F
KMIS 38 mi22 min ESE 12 G 21 64°F 59°F
KXPY 44 mi22 min NNE 9.9 54°F 48°F

Wind History for Pilots Station East, SW Pass, LA
(wind in knots)    EDIT      (on/off)   Help
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N3
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S11
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S9
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SE9
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KBVE

Wind History from BVE (wind in knots)
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Last 24hrNW8NW8NW6
G15
W9NW7W5W4W4W6W7W9
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NW10NW13
G19
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G21
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G25
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1 day agoS12SW12SW12S11S10S9S12S10S10S8S9S9S10S10S9S9SW10SW13N11
G18
N7NW5NW53NW6
2 days agoNE7NE6NE5E4NE5E3CalmCalmCalmSE3CalmCalmN3CalmSE3SE4S7S6S9S8S10S11S11S12

Tide / Current Tables for Pilot Station, Southwest Pass, Louisiana
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Joseph Bayou, Mississippi River, Louisiana
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_A
GEOS Local Image of Southeast    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 (5,6,7,8)
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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.