Tuesday, April24, 2018 L-36.com


Marine Weather and Tides
Abbeville, LA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:28AMSunset 7:41PM Tuesday April 24, 2018 7:26 AM CDT (12:26 UTC) Moonrise 1:36PMMoonset 2:15AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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- 346 Am Cdt Tue Apr 24 2018
Today..Northwest winds 5 to 10 knots. Bay waters a light chop.
Tonight..Northeast winds up to 5 knots. Bay waters smooth.
Wednesday..Northeast winds around 5 knots becoming northwest in the afternoon. Bay waters smooth increasing to a light chop in the afternoon.
Wednesday night..West winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers and Thunderstorms after midnight.
Thursday..Northwest winds 10 to 15 knots. Bay waters choppy. Chance of showers and slight chance of Thunderstorms in the morning, then slight chance of showers in the afternoon.
Thursday night..North winds up to 5 knots. Bay waters smooth.
Friday..Northwest winds 5 to 10 knots. Bay waters a light chop. Slight chance of rain showers in the afternoon.
Friday night..North winds 5 to 10 knots. Bay waters a light chop.
Saturday..North winds 5 to 10 knots. Bay waters a light chop.
Saturday night..West winds around 5 knots. Bay waters smooth.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 346 Am Cdt Tue Apr 24 2018
Synopsis.. Mainly light offshore flow will continue through tonight. A ridge of high pressure will move east of the area by Wednesday with a brief period of mainly light onshore flow developing. A cool front is expected to move across the coastal waters early Thursday, with a few showers. Light to modest offshore flow is then expected again behind the front and to persist for the remainder of the week.

7 Day Forecast for Marine Location Near Abbeville city, LA
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location: 29.79, -92.14     debug


Area Discussion for - Lake Charles, LA
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Fxus64 klch 241130
afdlch
area forecast discussion
national weather service lake charles la
630 am cdt Tue apr 24 2018

Discussion
24 12z TAF issuance.

Aviation
Vfr conditions prevail early this morning under clear skies. Some
patchy fog will be possible briefly near the aex terminal this
morning, but otherwise expect conditions to remainVFR through the
period. Some sct stratocu is expected during the day, with
northwest winds 5-10 kt. Winds will diminish this evening, with
lower clouds dissipating and a few cirrus streaming over the
region aloft.

24

Prev discussion issued 338 am cdt Tue apr 24 2018
synopsis...

analysis as of 24 08z, shows an upper level low over the tennessee
river valley, moving slowly to the east. This is allowing for a
dry west to northwest flow to occur aloft. Meanwhile, a surface
ridge is building down from the southern plains. The light winds,
clear skies, and dry air mass, is again allowing for a cool night,
with air temperatures again roughly 5f degrees below normal. The
water vapor imagery also shows the next weather maker, a short
wave located over the upper rocky mountain states, moving
southeast.

Rua
discussion...

the upper low will continue to slowly move to the east-northeast
reaching the mid-atlantic states by tomorrow. As this occurs, a
surface ridge will move across the forecast area today and off to
the east on Wednesday. Therefore, rather benign and pleasant
sensible weather will continue for the forecast area into
Wednesday.

Northwest flow aloft will drop the rocky mountain short wave to
the southeast, reaching the region Wednesday night and moving
across the forecast area on the first part of Thursday, pulling a
cold front along with it.

Should be enough time for the gulf to open up on Wednesday into
Wednesday night, as the high moves off to the east, that decent
moisture will pool ahead of this system. Progs show a band of
precipitable water (pwat) values between 1.35 and 1.50 inches,
which is between the 75th and 90th percentile for this time of
year, and mean rh values over 75 percent, for overnight Wednesday
into early Thursday. Decent 1000-850 moisture flux convergence
along the front, and some upper level divergence, provided by
right entrance region of upper level jet, that this moisture should
be lifted into shower activity.

Overall, instability will be very weak, with forecast mucape
values 200 j kg or less, and this should keep shower activity from
becoming too strong. Bulk shear values from 0-3km of 25-30 knots,
and 0-6km of 30 to 40 knots, along with 3-6km lapse rates nearing
6.5 c km, could allow for a few elevated thunderstorms, and
therefore will have a slight chance for thunderstorms in the
weather grids. However, the predominate weather mode should be
rain showers. Progressive nature and low intensity of convection
should keep rainfall amounts down, with on average a quarter to
half inch expected, with locally higher amounts in any storm that
can get going.

The northwest flow aloft will continue through the end of the
week, and this will allow for another short wave to drop down and
bring a re-enforcing cold front across the forecast area during
the day on Friday.

Moisture return looks rather meager ahead of this system as no
real southerly flow develops, therefore the gulf doesn't open up.

Pwat values are progged to be just over an inch, which is right
around the 50th percentile. Mean rh values vary from near 50
percent for western and southern zones, and up to 70 percent for
the northeast zones. Instability and other parameters look rather
weak again, and therefore, do not expect much with this frontal
passage. Maybe some isolated to widely scattered showers where
moisture is the best and will keep just a 20 pop for the northern
and eastern zones during the day on Friday.

High pressure will the settle in over the region for the weekend,
bringing cool nights and mainly sunny pleasant days, with no
chance of rain in the forecast. Probably the best weather weekend
in a while for this area.

Rua
marine...

a light to modest offshore flow is found over the coastal waters
this early morning as weak high pressure builds down from the
southern plains. These conditions will continue through tonight.

The high pressure will begin to move off to the east of the region
on Wednesday, and light onshore flow will gradually develop
during Wednesday. The light onshore flow will continue until a
cold front moves across the coastal waters on Thursday morning.

This front will bring a chance for showers and maybe an isolated
thunderstorm. Light to modest offshore flow will then develop
behind the front, and persist through the remainder of the week.

Rua

Preliminary point temps pops
Aex 80 56 80 57 0 0 10 50
lch 80 59 81 60 0 0 10 40
lft 79 59 81 61 0 0 0 30
bpt 81 60 82 59 0 0 10 40

Lch watches warnings advisories
La... None.

Tx... None.

Gm... None.

Aviation... 24


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRWL1 - 8766072 - Fresh Water Canal Locks, LA 19 mi39 min 61°F 71°F1017 hPa
MRSL1 - Marsh Island, LA / CSI03 24 mi87 min 4.1 G 6 65°F
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 49 mi39 min NW 1.9 G 4.1 58°F 64°F1016.9 hPa
KSCF 49 mi32 min NW 8 66°F 55°F
AMRL1 - 8764227 - Amerada Pass, LA 49 mi39 min NW 4.1 G 6 62°F 63°F1016.7 hPa
EINL1 49 mi39 min N 8 G 8.9 64°F 64°F1016.2 hPa57°F

Wind History for LAWMA, Amerada Pass, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Abbeville Chris Crusta Memorial Airport, LA13 mi52 minN 04.00 miFog/Mist53°F52°F100%1016.9 hPa
Acadiana Regional Airport, LA22 mi34 minN 05.00 miFog/Mist54°F52°F93%1017.1 hPa

Wind History from ARA (wind in knots)
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Last 24hrW5W7W9W9NW9W11W13
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NW9W9NW6NW6N7N4N5N3NW5CalmCalmW3CalmCalmCalm
1 day agoS6SW12
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NW16NW13NW12W14NW19
G24
NW14W11NW13NW12NW6NW4CalmCalmN5CalmSW3SW3SW3CalmCalm
2 days agoE5E8E8SE10S64S6SE10E13SE11SE11S7SE7SE4SE7SE12SE10SE11SE15SE11SE13S11S8S16
G20

Tide / Current Tables for Cypremort Point, Louisiana
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Cypremort Point
Click for Map
Tue -- 12:43 AM CDT     1.21 feet High Tide
Tue -- 03:14 AM CDT     Moonset
Tue -- 06:31 AM CDT     Sunrise
Tue -- 09:04 AM CDT     0.06 feet Low Tide
Tue -- 02:34 PM CDT     Moonrise
Tue -- 04:33 PM CDT     1.18 feet High Tide
Tue -- 06:15 PM CDT     1.10 feet Low Tide
Tue -- 07:18 PM CDT     1.12 feet High Tide
Tue -- 07:40 PM CDT     Sunset
Tue -- 09:36 PM CDT     0.91 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.21.110.90.60.40.30.20.10.10.30.50.70.911.21.21.11.11.10.90.91

Tide / Current Tables for Weeks Bay, Vermilion Bay, Louisiana
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Weeks Bay
Click for Map
Tue -- 12:07 AM CDT     1.31 feet High Tide
Tue -- 03:14 AM CDT     Moonset
Tue -- 06:31 AM CDT     Sunrise
Tue -- 08:50 AM CDT     0.25 feet Low Tide
Tue -- 02:34 PM CDT     Moonrise
Tue -- 03:52 PM CDT     1.61 feet High Tide
Tue -- 07:40 PM CDT     Sunset
Tue -- 10:59 PM CDT     1.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.31.21.10.90.70.50.40.30.30.30.50.81.11.41.61.61.61.51.41.31.21.11.1

Weather Map and Satellite Images
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wmap_A
GOES Local Image of SouthCentralPlains    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Lake Charles, LA (8,2,3,4)
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Ground Weather Radar Station Lake Charles, LA
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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.