Saturday, August24, 2019 L-36.com


Marine Weather and Tides
Bayou Vista, 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 6:34AMSunset 7:37PM Friday August 23, 2019 11:44 PM CDT (04:44 UTC) Moonrise 11:41PMMoonset 12:41PM Illumination 39% Phase: Third Quarter Moon; Moon at 23 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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GMZ435 Vermilion Bay- 947 Pm Cdt Fri Aug 23 2019
Rest of tonight..Southeast winds 5 to 10 knots. Bay waters a light chop. Chance of showers and Thunderstorms late in the evening, then showers and Thunderstorms likely after midnight.
Saturday..Southeast winds 5 to 10 knots. Bay waters a light chop. Showers likely and slight chance of Thunderstorms in the morning, then showers and chance of Thunderstorms in the afternoon.
Saturday night..South winds 5 to 10 knots. Bay waters a light chop. Chance of showers in the evening. Slight chance of Thunderstorms through the night. Showers likely after midnight.
Sunday..South winds 5 to 10 knots. Bay waters a light chop. Showers and Thunderstorms likely.
Sunday night..South winds 5 to 10 knots. Bay waters a light chop. Chance of showers and Thunderstorms in the evening, then showers and Thunderstorms likely after midnight.
Monday..Southwest winds 5 to 10 knots. Bay waters a light chop. Showers and Thunderstorms likely in the morning, then chance of showers and Thunderstorms in the afternoon.
Monday night..South winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers and Thunderstorms.
Tuesday..Southwest winds 5 to 10 knots. Bay waters a light chop. Chance of showers and Thunderstorms.
Tuesday night..Southwest winds around 5 knots. Bay waters smooth.
Wednesday..Southwest winds around 5 knots. Bay waters smooth. Slight chance of showers and Thunderstorms in the morning, then chance of showers and Thunderstorms in the afternoon.
Wednesday night..Southwest winds around 5 knots. Bay waters smooth. Slight chance of showers and Thunderstorms after midnight.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 947 Pm Cdt Fri Aug 23 2019
Synopsis.. Light to occasionally moderate onshore flow will continue through the period. Numerous showers and Thunderstorms will continue across the coastal waters today through Saturday as a tropical wave coupled with an upper level disturbance moves across the region. Daily precipitation chances will trend closer to normal by early next week.


7 Day Forecast for Marine Location Near Bayou Vista, LA
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location: 29.67, -91.24     debug


Area Discussion for - Lake Charles, LA
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Fxus64 klch 240431
afdlch
area forecast discussion
national weather service lake charles la
1131 pm cdt Fri aug 23 2019

Aviation Mid level low over the western gulf of mexico will
keep a steady northward feed of moisture through this TAF set.

Precipitable water will continue to climb reaching 2.5 inches.

Nocturnal showers and a few thunderstorms will develop offshore as
the night progresses, advancing inland over our southern
terminals of lft, ara, lch and bpt. Starting these sites with vcsh
then ramp up to tempo groups for mainly showers beginning at 10z
and maintain this through the morning. Transition to prevailing
for the afternoon as main lift arrives with approaching feature.

Will see lowering ceilings into MVFR with convection. Held off on
any mention of rains at aex until mid morning.

Prev discussion issued 1005 pm cdt Fri aug 23 2019
discussion...

very little change to the ongoing forecast this evening. All
inland convection has dissipated, though there is a band of
showers tracking north over the coastal waters that will reach
coastal SE tx SW la within the hour if it can hold together.

Additional and more widespread activity is expected to develop
during the overnight hours into Sat morning across the gulf
water and inland areas mainly along and S of i-10. Rainfall
totals of generally 1 to 4 inches are expected, though locally
higher amounts will be possible, especially if a more organized
convective event can develop as suggested by some guidance.

13
prev discussion... Issued 659 pm cdt Fri aug 23 2019
aviation... Have maintained vcts at all terminals through 02z.

Radar currently depicting limited convection over the area,
primarily over central louisiana into interior southeast texas,
and also over acadiana. Mid level low over the western gulf of
mexico will keep a steady northward feed of moisture through this
taf set. Precipitable water will continue to climb reaching 2.5
inches. Nocturnal showers and a few thunderstorms will develop
offshore as the night progresses, advancing inland over our
southern terminals of lft, ara, lch and bpt. Started a return of
convection at 09z and carrying tempo groups for shra throughout
the morning then transitioning into prevailing. Also expecting
lowering ceilings into MVFR. Held off on any mention of rains at
aex until mid morning.

Prev discussion... Issued 331 pm cdt Fri aug 23 2019
discussion... Heavy rain possible over the region through the
weekend.

A plume of tropical moisture associated with a tropical
disturbance will continue to stream over the region through
Sunday. This morning's klch sounding indicated a pwat of 2.36"
and guidance indicates this may remain near steady or at least
range between 2.25" and 2.5" for the next 2 days. A weakness aloft
may also allow numerous to widespread showers and storms to
develop which could be very efficient at producing rainfall. Due
to this in place and already saturated soils, especially along the
i-10 corridor to the coast a ff watch is in effect from 1am to
7pm tomorrow for the southern half of the area.

Early next week the flow aloft will become more northerly which
will decrease moisture. Rain chances are expected to decrease to
near normal values, however higher rain chances will remain near
the atchafalaya basin and eastward with higher pwats remaining in
that direction.

Finally late in the week guidance is indicating an early season
cold front. Much cooler air is not expected to move into the
region, however lower dewpoints and slightly cooler mornings may
arrive by Friday or in time for next weekend.

Marine... A light to moderate onshore flow will remain in place
through mid week, however numerous to widespread showers and
storms can be expected through the weekend. Storms may cause
locally higher winds and seas.

Preliminary point temps pops
Aex 72 88 73 89 20 60 30 60
lch 75 87 76 88 60 80 40 70
lft 74 86 74 87 40 80 30 70
bpt 76 87 76 88 60 80 40 60

Lch watches warnings advisories
La... Flash flood watch through Saturday evening for laz041>045-
052>055-073-074.

Tx... Flash flood watch through Saturday evening for txz215-216.

Gm... None.

Aviation... 23


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 0 mi62 min SE 1 G 1.9 79°F 86°F1014.8 hPa
AMRL1 - 8764227 - Amerada Pass, LA 16 mi56 min E 1.9 G 2.9 79°F 85°F1014.7 hPa
EINL1 22 mi56 min SSE 8.9 G 9.9 83°F 86°F1014.7 hPa76°F
BYGL1 - 8762482 - Bayou Gauche, LA 44 mi62 min SE 4.1 G 5.1 80°F 86°F1015 hPa
MRSL1 - Marsh Island, LA / CSI03 46 mi104 min 13 G 15 82°F

Wind History for Tesoro Marine Terminal, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Patterson Memorial, LA6 mi2.8 hrsE 310.00 miFair75°F75°F100%1015.4 hPa

Link to 5 minute data for KPTN

Wind History from PTN (wind in knots)
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Last 24hrE3--Calm----E5N3Calm--SW7SE3SE4S5SE4S3S3S7S7SW8NW6CalmE3--Calm
1 day ago----E3Calm--Calm----E3E5E7E55CalmCalmSE7SE5E7E4SW4Calm------
2 days ago----------CalmCalm------S3W13
G18
SW4S5SE4--CalmCalmE4NE4NW5Calm--Calm

Tide / Current Tables for Shell Island, Louisiana
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Shell Island
Click for Map
Sat -- 12:40 AM CDT     Moonrise
Sat -- 03:04 AM CDT     1.47 feet High Tide
Sat -- 03:06 AM CDT     1.46 feet Low Tide
Sat -- 06:38 AM CDT     Sunrise
Sat -- 07:45 AM CDT     1.50 feet High Tide
Sat -- 02:40 PM CDT     Moonset
Sat -- 05:01 PM CDT     0.15 feet Low Tide
Sat -- 07:36 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.41.51.51.51.51.51.51.51.51.41.31.210.70.40.20.10.20.30.40.60.81

Tide / Current Tables for Point Chevreuil, Louisiana
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Point Chevreuil
Click for Map
Sat -- 12:41 AM CDT     Moonrise
Sat -- 02:51 AM CDT     1.46 feet Low Tide
Sat -- 03:11 AM CDT     1.47 feet High Tide
Sat -- 06:39 AM CDT     Sunrise
Sat -- 07:53 AM CDT     1.50 feet High Tide
Sat -- 02:41 PM CDT     Moonset
Sat -- 04:46 PM CDT     0.15 feet Low Tide
Sat -- 07:37 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.51.51.51.51.51.51.51.51.51.41.31.20.90.60.40.20.10.20.30.40.60.81

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Lake Charles, LA (0,6,7,8)
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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.