Saturday, March28, 2020
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Marine Weather and Tides
Venice, LA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:52AMSunset 7:18PM Saturday March 28, 2020 6:44 PM CDT (23:44 UTC) Moonrise 9:28AMMoonset 11:09PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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:202003290400;;215763 Fzus54 Klix 282048 Cwflix Coastal Waters Forecast National Weather Service New Orleans La 348 Pm Cdt Sat Mar 28 2020 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. Gmz550-552-290400- 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- 348 Pm Cdt Sat Mar 28 2020
Tonight..South winds 10 to 15 knots. Seas 3 to 6 feet. Dominant period 7 seconds.
Sunday..South winds 10 to 15 knots becoming east in the afternoon. Seas 3 to 5 feet. Dominant period 7 seconds. Slight chance of showers early in the morning.
Sunday night..Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 7 seconds.
Monday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 7 seconds.
Monday night..South winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 6 seconds. Chance of showers in the late evening and overnight.
Tuesday..West winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 5 seconds. Slight chance of Thunderstorms in the morning. Chance of showers through the day.
Tuesday night..North winds 15 to 20 knots. Seas 3 to 6 feet. Dominant period 5 seconds.
Wednesday..Northeast winds 15 to 20 knots. Seas 3 to 5 feet.
Wednesday night..East winds 10 to 15 knots. Seas 2 to 4 feet.
Thursday..East winds 10 to 15 knots. Seas 1 to 2 feet.
Thursday night..Southeast winds 10 to 15 knots becoming east after midnight. Seas 1 to 2 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 348 Pm Cdt Sat Mar 28 2020
Synopsis..A weak front will stall along the coast and dissipate tonight into tomorrow. A low pressure system will then begin to develop over the plains tomorrow night and this system will drive a cold front through the waters Monday night and Tuesday. High pressure will settle over the waters behind this front for Wednesday and Thursday.


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 282043 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 343 PM CDT Sat Mar 28 2020

SHORT TERM. A shortwave trough axis lifting out of the Plains and into the Midwest tonight will drag a weakening cold front into the region. The front will be most robust as it enters the northwest portion of the forecast area generally north and west of a Baton Rouge to McComb line, and have the highest POP values in this region for tonight. Model soundings indicate a fair degree of instability in advance of the front, and there should be enough convergence along the front and weak omega aloft to support the development of some scattered thunderstorms. Any thunderstorm activity should remain on the weaker side tonight. Temperatures will remain very warm with lows in the middle to upper 60s.

The front will dissipate by tomorrow morning, and a brief window of drier weather will take hold of the region through tomorrow evening. Little in the way of cold air advection is now expected, and daytime highs will remain well above normal in the lower 80s.

The next round of rain will begin to develop tomorrow night as a vort max and jet streak slides through the Lower Mississippi Valley. Rain showers will be most likely through Monday afternoon generally along and north of the I-10 corridor. Fortunately, lapse rates and instability do not look favorable for thunderstorm development during this period. Temperatures will remain mild with highs climbing back into the lower 80s Monday afternoon.

Thunderstorm chances will increase Monday night into early Tuesday as a trough axis over the Southern Plains begins to take on a negative tilt in response to a strong jet streak ejecting out across the Lower Mississippi Valley. A stronger cold front will race to the east and pass through the forecast area. Ample forcing combined with increasing instability due to more favorable mid- level lapse rates will support the development of some thunderstorms late Monday night into early Tuesday morning. In advance of this front, a decent 40 knot jet streak could develop over the northern third of the forecast area. Model soundings at McComb indicate the potential for a curved hodograph, decent 0-3km helicity of 300m2/s2, and 0-3km shear of 35 knots. These parameters would support a risk of some strong to possibly severe thunderstorm activity across the northern third of the CWA late Monday night into early Tuesday. Temperatures will remain mild Monday night with lows only dipping into the upper 60s and lower 70s.

LONG TERM. The cold front will quickly clear the area on Tuesday with showers coming to an end by the afternoon. A strong ridge of high pressure will then build over the area. A colder and drier airmass will accompany this front, and expect to see lower humidity and temperatures closer to seasonal averages from Tuesday night through Thursday.

Heading into Friday, there are some timing differences with the next shortwave feature and associated front, but the trend is toward a risk of scattered showers and a few thunderstorms Friday into Friday night. Have gone with with a chance POP of around 30 percent during this period. Temperatures will remain near average as a largely zonal flow pattern dominates in the upper levels.

AVIATION. All terminals will be in VFR status for the remainder of the afternoon and evening but will likely begin to fall into MVFR and possibly IFR status after 8z as low clouds and eventually some shra move in with approaching cold front. Cold front should move into and through much of the area between 9z and 15z tomorrow. Most likely terminals to be impacted by shra and maybe even a tsra will be along and north of the 10/12 corridor. Confidence is not real high in tsra so have refrained from adding that to any TAFs at this time. /CAB/

MARINE. Onshore flow of 10 to 15 knots and seas of 2 to 4 feet are expected through Monday as a high pressure system remains centered to the southeast of the region, and a series of low pressure systems passes through the Plains and into the Midwest. Winds will increase from the west at 15 to 20 knots on Tuesday as a cold front sweeps through the waters. These winds should shift to the north by Tuesday night and increase to around 20 knots. Seas will respond to these stronger winds and increase to 4 to 7 feet by Wednesday morning, and a small craft advisory may be needed over the Gulf waters during this period. As high pressure settles over the region Wednesday night into Thursday, winds will decrease to 10 to 15 knots and turn more easterly. Seas will also drop back to around 2 to 4 feet.

DECISION SUPPORT.

DSS code: Blue. Deployed: None. Activation: None. Activities: Forecast support for COVID-19 outdoor test sites. River Flood Warnings

PRELIMINARY POINT TEMPS/POPS. MCB 66 80 63 79 / 50 10 20 30 BTR 65 81 64 81 / 50 10 10 40 ASD 67 82 65 82 / 20 10 10 20 MSY 70 82 70 82 / 10 10 10 20 GPT 71 80 66 79 / 10 20 10 20 PQL 70 83 64 82 / 10 20 10 10

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
PSTL1 - 8760922 - Pilot's East, SW Pass, LA 1 mi56 min SE 2.9 G 5.1
BURL1 - Southwest Pass, LA 3 mi44 min 9.9 G 11
KDLP 15 mi29 min SSE 8.9 77°F 73°F
PILL1 18 mi56 min S 8 G 8.9 72°F 59°F1014.3 hPa
42093 24 mi194 min 77°F5 ft
KMDJ 29 mi29 min S 8 79°F 75°F
LOPL1 - Louisiana Offshore Oil Port, LA 33 mi97 min 6 G 9.9 78°F 5 ft1014.1 hPa72°F
GISL1 - 8761724 - Grand Isle, LA 37 mi56 min W 5.1 G 8.9 79°F
KMIS 38 mi29 min S 7 77°F 73°F
KXPY 44 mi29 min SSE 11 81°F 75°F

Wind History for Pilots Station East, SW Pass, LA
(wind in knots)    EDIT      (on/off)   Help
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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
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1 day agoS12SW12SW12S11S10S9S12S10S10S8S9S9S10S10S9S9SW10SW13N11
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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 (19,4,5,8)
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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 numerous 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.