Tuesday, April25, 2017 L-36.com


Marine Weather and Tides
Abbeville, 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 6:27AMSunset 7:42PM Tuesday April 25, 2017 1:26 PM CDT (18:26 UTC) Moonrise 5:07AMMoonset 6:01PM Illumination 0% Phase: New Moon; Moon at 29 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- 1017 Am Cdt Tue Apr 25 2017
Rest of today..South winds 10 to 15 knots. Bay waters choppy.
Tonight..South winds 10 to 15 knots. Bay waters choppy.
Wednesday..South winds 15 to 20 knots. Bay waters rough. Slight chance of showers and Thunderstorms in the afternoon.
Wednesday night..Southwest winds 15 to 20 knots becoming northwest 10 to 15 knots after midnight. Bay waters rough decreasing to choppy after midnight. Chance of showers and Thunderstorms.
Thursday..Northeast winds 5 to 10 knots becoming southeast in the afternoon. Bay waters a light chop.
Thursday night..South winds 10 to 15 knots. Bay waters choppy.
Friday..South winds 10 to 15 knots. Bay waters choppy.
Friday night..Southeast winds 15 to 20 knots. Bay waters rough.
Saturday..Southeast winds 20 to 25 knots. Bay waters very rough. Slight chance of showers and Thunderstorms.
Saturday night..South winds 15 to 20 knots. Bay waters rough. Slight chance of showers and Thunderstorms.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 1017 Am Cdt Tue Apr 25 2017
Synopsis.. An increasing southerly flow is expected today as the pressure gradient tightens between high pressure to our east and low pressure deepening over the southern plains. This low will pull a weak cold front across the gulf waters Wednesday night...possibly accompanied by a few Thunderstorms. A brief period of elevated offshore flow is likely behind the front before southerlies become re-established for the remainder of the period.

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 251745
afdlch
area forecast discussion
national weather service lake charles la
1245 pm cdt Tue apr 25 2017

Discussion
For the 04/25/17 1800 utc TAF package.

Aviation
Abundant cu/stratocu streaming into the area amid a deepening and
intensifying moist southerly fetch. Expect primarilyVFR cigs
(already at kbpt and klch) to continue expanding across the region
this afternoon, though periodic MVFR obs may also occur. CIGS are
forecast to lower this evening into MVFR, with tempo ifr toward
early Wed morning. South winds will remain elevated overnight
(gusty at kbpt and klch) and are expected to increase on wed.

While lifting a bit, CIGS are forecast to remain MVFR through wed
morning. Chances for convection increase beyond this TAF forecast
period, especially kaex.

13

Prev discussion /issued 1112 am cdt Tue apr 25 2017/
aviation... 04
discussion... Moisture continues to deepen through the low levels
and satellite imagery showing considerable stratocu expanding
across the area at around 3k ft. Despite cloud cover, expect
afternoon highs in the low to mid 80s to be reached on a long
fetch of strengthening and warming southerlies. Forecast looks
good and no update required.

Prev discussion... /issued 645 am cdt Tue apr 25 2017/
discussion...

12z tafs
aviation...

a tightening pressure gradient between high pressure over the
eastern gulf of mexico and a low centered near the oklahoma
panhandle will result in gusty southerly winds developing by mid
morning and continuing through Wednesday morning. Otherwise,
scattered CU are expected by this afternoon with MVFR cigs
developing by this evening and overnight with the approach of a
cold front.

Jones
prev discussion... /issued 400 am cdt Tue apr 25 2017/
discussion...

current sfc analysis shows high pressure centered over the central
gulf ridging nwd across the lower ms valley and mid-south... While
a low pressure system was noted over the tx/ok panhandles. Water
vapor imagery shows a general wrly flow aloft in place over the
wrn gulf region, while weak troffing is seen over the WRN conus
with multiple weak ripples noted within the flow. Satellite
imagery/sfc obs show mostly clear skies over the forecast area
with just a little cirrus noted... And temps were running about 10
degrees above this time yesterday morning. Regional 88ds were
ppine.

No significant changes to inherited grids/zones this morning. As
sfc hi continues pushing ewd across the gulf, srly return flow
will become more established across the region, allowing low-level
moisture to begin ramping up. Still expecting dry weather to
persist through today though as forecast soundings indicate dry
conditions/weak capping lingering aloft. More seasonal temps are
also expected today with maxes topping out in the lower 80s. Will
also have to keep an eye on elevated srly winds mainly across the
tx zones thanks to a tightening pressure gradient and stronger
winds aloft mixing down during the late morning/early afternoon...

for now, don't see a need for any advisories but this could
change as we get further into the day.

Wrn CONUS trof is progged to deepen into tonight which will help
turn the mid-level flow to a more swrly direction, introducing
increasing gulf moisture across the region. A strong shortwave is
progged to push through the four corners region and into the srn
plains through Wednesday, taking on a slight negative tilt as it
moves into the WRN gulf region by Wednesday night... This system
will also push its attendant sfc frontal boundary through the
forecast area by sunrise Thursday. Expect scattered to numerous
showers and thunderstorms to develop along/ahead of the front,
especially from i-10 nwd where best moisture/lift is progged.

Will also have to watch severe weather potential for the NRN areas
as forecast soundings indicate best shear/lapse rates. All precip
should move out of the area by Thursday morning, allowing for a
dry day and night... Although the front is progged to quickly wash
out after departing the area and return flow will then re-develop
behind it.

A few showers/storms look possible across the NRN zones on Friday
mainly due to the increased moisture and heating with no
significant disturbances noted in a swrly flow aloft. Better rain
chances return for the weekend as the next storm system
aloft/associated sfc front get organized over the WRN states and
push ewd. Looking at another cooldown for early next week with
morning lows in the 50s both Monday/Tuesday... While highs on
Monday will mostly stay in the lower 70s.

Marine...

caution headlines have been introduced for today across the wrn
outer waters thanks to the tightening gradient with low pressure
deepening over the SRN plains. Expect these conditions to spread
over the remainder of the coastal waters into tonight with an sca
possibly needed beginning overnight tonight.

Preliminary point temps/pops
Aex 82 69 84 54 / 0 10 30 70
lch 81 72 82 58 / 0 10 20 50
lft 83 72 85 63 / 0 10 20 50
bpt 82 73 84 56 / 10 10 30 30

Lch watches/warnings/advisories
La... None.

Tx... None.

Gm... Small craft exercise caution until 7 pm cdt this evening for
gmz470.



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 SSE 12 G 15 74°F 73°F1008.7 hPa
MRSL1 - Marsh Island, LA / CSI03 24 mi87 min 7 G 13 74°F
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 49 mi39 min S 9.9 G 13 71°F 69°F1009.8 hPa
KSCF 49 mi32 min SSE 15 73°F 61°F
AMRL1 - 8764227 - Amerada Pass, LA 49 mi39 min S 4.1 G 12 73°F 69°F1009.7 hPa

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 mi54 minS 12 G 1910.00 miMostly Cloudy75°F64°F69%1009.1 hPa
New Iberia, Acadiana Regional Airport, LA22 mi34 minS 12 G 2010.00 miMostly Cloudy77°F59°F54%1008.9 hPa

Wind History from ARA (wind in knots)
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Last 24hrNW11
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--NW84W4SW6W3SW6SW5W4CalmCalmS3SE4CalmCalmCalmE6SE3S5S12S12
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1 day agoN11
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N11NW13N11N12N10N4CalmSW3CalmCalmSW3CalmCalmCalmW5NW4NW7NW9NW10NW10
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G20

Tide / Current Tables for Cypremort Point, Louisiana
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Cypremort Point
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Tue -- 12:33 AM CDT     0.29 feet Low Tide
Tue -- 06:05 AM CDT     Moonrise
Tue -- 06:30 AM CDT     Sunrise
Tue -- 07:43 AM CDT     1.21 feet High Tide
Tue -- 10:16 AM CDT     0.99 feet Low Tide
Tue -- 11:23 AM CDT     1.02 feet High Tide
Tue -- 01:12 PM CDT     0.91 feet Low Tide
Tue -- 05:12 PM CDT     1.13 feet High Tide
Tue -- 06:59 PM CDT     Moonset
Tue -- 07:40 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.50.70.91.11.21.21.21.11110.911.11.11.11.10.90.80.60.30.2

Tide / Current Tables for Weeks Bay, Vermilion Bay, Louisiana
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Weeks Bay
Click for Map
Tue -- 12:03 AM CDT     0.43 feet Low Tide
Tue -- 06:05 AM CDT     Moonrise
Tue -- 06:15 AM CDT     1.69 feet High Tide
Tue -- 06:30 AM CDT     Sunrise
Tue -- 12:55 PM CDT     0.88 feet Low Tide
Tue -- 05:27 PM CDT     1.40 feet High Tide
Tue -- 06:59 PM CDT     Moonset
Tue -- 07:40 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.50.711.31.61.71.71.51.41.210.90.90.91.11.31.41.41.31.10.80.60.3

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

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Lake Charles, LA (14,3,4,5)
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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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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.