Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Glencoe, LA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:57AMSunset 7:25PM Wednesday March 29, 2017 2:15 PM CDT (19:15 UTC) Moonrise 7:15AMMoonset 8:20PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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- 1012 Am Cdt Wed Mar 29 2017
.small craft exercise caution in effect until noon cdt today...
.small craft advisory in effect until 10 pm cdt this evening...
Rest of today..Southeast winds 15 to 20 knots. Bay waters rough.
Tonight..South winds 15 to 20 knots. Bay waters rough. Chance of showers and Thunderstorms in the evening, then showers and Thunderstorms likely after midnight.
Thursday..Southwest winds 10 to 15 knots. Bay waters choppy. Showers and Thunderstorms likely in the morning, then chance of showers and Thunderstorms in the afternoon.
Thursday night..West winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers and Thunderstorms in the evening.
Friday..South winds around 5 knots. Bay waters smooth.
Friday night..Southeast winds 5 to 10 knots. Bay waters a light chop.
Saturday..Southeast winds 10 to 15 knots. Bay waters choppy.
Saturday night..Southeast winds 10 to 15 knots. Bay waters choppy. Slight chance of showers and Thunderstorms.
Sunday..Southeast winds 15 to 20 knots. Bay waters rough. Showers and Thunderstorms likely.
Sunday night..South winds 15 to 20 knots. Bay waters rough. Showers and Thunderstorms likely.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 1012 Am Cdt Wed Mar 29 2017
Synopsis.. Strong and gusty south winds along with rough seas are expected during the afternoon as a low pressure area and an associated cold front approach the area. Winds are forecast to gradually subside from west to east tonight as the front nears and then pushes through the region. A brief period of west winds will follow the frontal passage, with an onshore flow returning Thursday night into Friday. South winds will increase again over the weekend in association with another storm system forecast to affect the area.

7 Day Forecast for Marine Location Near Glencoe, LA
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location: 29.73, -91.72     debug


Area Discussion for - Lake Charles, LA
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Fxus64 klch 291646
afdlch
area forecast discussion
national weather service lake charles la
1146 am cdt Wed mar 29 2017

Aviation A vigorous storm system advancing through the midwest
will maintain a tight pressure gradient with strong and gusty
south winds through this afternoon and into the evening until an
associated frontal passage. Shower and thunderstorm activity will
be on the increase west to east and carrying tempo groups for
convection accordingly. More robust thunderstorms will have
the potential for higher wind gusts.

Prev discussion /issued 1050 am cdt Wed mar 29 2017/
update...

line of convection heading into the greater houston area of
southeast texas currently. This activity may undergo a brief
weakening trend before noon, as it begins to reach the forecast
area. However, hi-res models show activity regenerating and firing
up after 2-3 pm over western portion of southeast texas of the
forecast area. With this activity gradually moving into southwest
louisiana during the evening hours. Still potential for severe
weather and we will be launching a special RAOB at 18z to sample
the airmass for this afternoon. Surface winds still expected to
increase this afternoon and will keep the wind advisory in place
as is. No significant changes to the grids/forecast at this time.

Rua
discussion...

prev discussion... /issued 630 am cdt Wed mar 29 2017/
aviation... Spotty MVFR conditions are occurring this morning and
will continue, however ceilings are expected to lower more this
afternoon and into tonight. Rain and thunderstorms will occur this
afternoon and tonight across the region which will lower the vis.

Strong gusty winds are also expected. Winds will be generally sse
this morning and become SW tonight.

Prev discussion... /issued 547 am cdt Wed mar 29 2017/
discussion...

vigorous upper low nearing the tx panhandle per latest water vapor
satellite imagery, with latest sfc analysis showing an elongated
area of low pressure over northern tx, with a leading dryline/front
extending south through central tx and a trailing cold front
stretching west across north tx into nm.

Elevated winds over coastal SE tx/sw la are finally starting to
settle down a bit. This looks to be short lived, however, as winds
are forecast to increase this afternoon across most of the area
along/south of i-10 and over parts of E central la owing to the
tight pressure gradient and a 30-40kt llj. Went ahead an issued a
wind advisory from noon through 6 pm, though it is possible an
extension in time may be needed for locations near the coast.

Gusts could reach into the 35-40 mph range.

Initial band of convection raced eastward across central and into
eastern tx overnight and early this morning, weakening and pushing
out an extensive outflow which is currently generating light
returns over interior SE tx. This scenario was depicted fairly
well in high resolution cam guidance, albeit the guidance was a
little slower than what actually materialized. There has and
continues to be greater disparity in convective evolution today,
however. Examining the overall progged environment and the
guidance that did perform well with this initial round continues
to yield the general idea that significant convection will hold
off spreading into and/or developing over E tx until later this
afternoon with the arrival of more favorable lapse rates and
greater lift accompanying a coupled/split jet structure. All
severe modes continue to look possible per forecast
soundings/parameters. Convection will then spread/move into W la
during the evening and continue twd the atchafalaya through the
overnight period. The trailing cdfnt, which will eventually
overtake/merge with the leading boundary, is forecast to be
pushing east of the sabine river by early Thu morning, and will
exit east of the atchafalaya by late afternoon/early evening. Bulk
of convection is progged to occur well ahead of the actual
boundary, however, and latest guidance continues to accelerate its
departure such that pops Thu were trended downward.

Flat ridging in the wake of the departing upper low will result
in quiet weather on fri, with good rain chances returning late sat
through Sun night with the approach and passage of another upper
low.

13
marine...

strong and gusty south winds along with rough seas are expected
to persist today as a low pressure area and an associated cold
front approach the area. Winds are forecast to gradually subside
from west to east tonight as the front nears and then pushes
through the region. A brief period of west winds will follow the
frontal passage, with an onshore flow returning Thursday night
into Friday. South winds will increase again over the weekend in
association with another storm system forecast to affect the area.

13

Preliminary point temps/pops
Aex 82 67 75 54 / 20 80 40 10
lch 81 66 77 57 / 40 80 40 10
lft 84 72 80 61 / 10 70 60 10
bpt 81 63 79 58 / 60 70 30 10

Lch watches/warnings/advisories
La... Wind advisory until 6 pm cdt this evening for laz031>033-041>045-
052>055-073-074.

Tx... Wind advisory until 6 pm cdt this evening for txz215-216.

Gm... Small craft advisory until 1 am cdt Thursday for gmz450-452-455-
470-472-475.

Small craft advisory until 10 pm cdt this evening for gmz430-432.

Small craft advisory until 10 pm cdt this evening for gmz435.

Small craft exercise caution until noon cdt today for gmz435.

Aviation... 23


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 26 mi45 min SSE 9.9 G 15 78°F 62°F1013.9 hPa
MRSL1 - Marsh Island, LA / CSI03 27 mi135 min 14 G 16 74°F
AMRL1 - 8764227 - Amerada Pass, LA 28 mi45 min SE 7 G 12 78°F 67°F1013.8 hPa
EINL1 30 mi45 min S 19 G 22 76°F 73°F1013.4 hPa69°F
FRWL1 - 8766072 - Fresh Water Canal Locks, LA 33 mi93 min ESE 11 G 17 75°F 76°F1013.2 hPa
KSCF 43 mi40 min SE 14 73°F 72°F

Wind History for Tesoro Marine Terminal, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Salt Point, LA16 mi22 minVar 6 mi78°F69°F74%1013.3 hPa
Patterson Memorial, LA21 mi19 minSSE 12 G 1710.00 miOvercast81°F69°F67%1014 hPa
New Iberia, Acadiana Regional Airport, LA22 mi22 minSSE 16 G 2410.00 miMostly Cloudy81°F66°F61%1013.3 hPa

Wind History from P92 (wind in knots)
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Last 24hr54SE8SE7SE6SE6SE6SE7SE8SE7SE7SE5SE8
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6
1 day agoS76454SE4SE3SE3SE4SE3SE3Calm3CalmCalmCalmCalmCalm4SE7SE9SE7S76
2 days ago4464SE6SE6SE55SE74644443SE34SE55SE86--6

Tide / Current Tables for Cote Blanche Island, West Cote Blanche Bay, Louisiana
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Cote Blanche Island
Click for Map
Wed -- 01:31 AM CDT     0.21 feet Low Tide
Wed -- 06:59 AM CDT     Sunrise
Wed -- 08:14 AM CDT     Moonrise
Wed -- 08:30 AM CDT     1.41 feet High Tide
Wed -- 02:15 PM CDT     0.56 feet Low Tide
Wed -- 07:23 PM CDT     Sunset
Wed -- 07:59 PM CDT     1.16 feet High Tide
Wed -- 09:19 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.20.20.30.50.81.11.31.41.41.31.10.80.60.60.60.70.811.11.21.10.90.7

Tide / Current Tables for Weeks Bay, Vermilion Bay, Louisiana
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Weeks Bay
Click for Map
Wed -- 01:46 AM CDT     0.28 feet Low Tide
Wed -- 07:00 AM CDT     Sunrise
Wed -- 08:00 AM CDT     1.57 feet High Tide
Wed -- 08:15 AM CDT     Moonrise
Wed -- 02:40 PM CDT     0.71 feet Low Tide
Wed -- 07:21 PM CDT     1.25 feet High Tide
Wed -- 07:24 PM CDT     Sunset
Wed -- 09:20 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.30.30.40.60.91.21.51.61.51.41.210.80.70.70.811.11.21.21.10.90.7

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Lake Charles, LA (15,3,4,5)
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Ground Weather Radar Station Lake Charles, 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.