Monday, March27, 2017 L-36.com


Marine Weather and Tides
Berwick, 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 6:55AMSunset 7:20PM Monday March 27, 2017 7:44 AM CDT (12:44 UTC) Moonrise 5:50AMMoonset 6:07PM 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- 450 Am Cdt Mon Mar 27 2017
Today..South winds 10 to 15 knots. Bay waters choppy.
Tonight..South winds 5 to 10 knots. Bay waters a light chop.
Tuesday..South winds 5 to 10 knots. Bay waters a light chop.
Tuesday night..Southeast winds 10 to 15 knots. Bay waters choppy.
Wednesday..Southeast winds 10 to 15 knots. Bay waters choppy.
Wednesday night..South winds 10 to 15 knots. Bay waters choppy. Chance of showers and Thunderstorms.
Thursday..South winds 10 to 15 knots. Bay waters choppy. Showers and Thunderstorms likely.
Thursday night..West winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers and Thunderstorms.
Friday..West winds up to 5 knots. Bay waters smooth.
Friday night..Southeast winds 5 to 10 knots. Bay waters a light chop.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 450 Am Cdt Mon Mar 27 2017
Synopsis.. Modest southerly flow will continue today between an area of high pressure to the east and an area of low pressure tracking from the southern plains northeast toward the mid mississippi river valley. Winds will subside a bit tonight as this low continues to pull away from the area, but are forecast to begin to strengthen again on Tuesday as another low pressure system emerges east of the rockies. Brisk south winds will continue Wednesday as this feature tracks eastward across the plains, subsequently pulling a frontal boundary through the coastal waters Thursday afternoon or evening. A brief period of offshore flow will follow the frontal passage, with southerly winds returning by Friday.

7 Day Forecast for Marine Location Near Berwick, LA
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location: 29.74, -91.23     debug


Area Discussion for - Lake Charles, LA
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Fxus64 klch 271152
afdlch
area forecast discussion
national weather service lake charles la
652 am cdt Mon mar 27 2017

Discussion
For the 03/27/17 1200 utc TAF package.

Aviation
Mix of MVFR cigs/vsbys andVFR as elevated winds have kept lower
conditions at bay. Expect the MVFR vsbys to improve over the next
couple of hours with CIGS taking a little longer, improving toVFR
by midday. Isolated to scattered convection is possible by
afternoon, so inserted vcts all sites. Winds aloft progged to be
weaker tonight, which is expected to yield lower cigs/vsbys
developing by mid-evening at the coastal sites and closer to
midnight kaex.

13

Prev discussion /issued 454 am cdt Mon mar 27 2017/
discussion...

vigorous shortwave trof evident in water vapor imagery over ern
ks/ok is progged to continue translating quickly eastward today,
with its associated sfc low tracking NE through the mid ms river
valley and the trailing cdfnt forecast to stall out well n/nw of
the area. While fcst soundings depict a fair amount of instability
with little to no inhibition, forcing for ascent appears rather
anemic/unfocused. 0-6km shear is near the lower threshold for a
severe risk, so given all of these factors, expect isolated to
scattered mainly afternoon convection, with a few pulse-type
strong/severe storms capable of producing hail/wind gusts.

Activity will be primarily diurnally driven, and should dissipate
after sunset. An otherwise warm, humid, and somewhat breezy
afternoon is expected.

Warm and dry weather expected Tue as ridging aloft slides across
the gulf coast states between the departing shortwave trof and
another more robust trof digging into the four corners. This
feature is progged to close off and move only slowly eastward wed
and Thu across the central/southern plains twd the ms river valley.

Strong lift and impressive kinematics coupled with rich mstr and
moderate instability will yield scattered to numerous showers and
tstms across the area. Activity should initially affect SE tx wed
afternoon, then develop/spread farther east into la by Wed night
into Thu before pushing east of the area by Thu night as a cdfnt
sweeps through the area. All severe modes appear possible, along
with a risk of locally heavy rainfall.

Another dry day on tap for fri, with yet another upper level
system bringing rain chances back into the picture for the
weekend. Still a fair amount of variability in global models with
this one.

13
marine...

modest southerly flow will continue today between an area of high
pressure to the east and an area of low pressure tracking from the
southern plains northeast toward the mid mississippi river valley.

Winds will subside a bit tonight as this low continues to pull
away from the area, but are forecast to begin to strengthen again
on Tuesday as another low pressure system emerges east of the
rockies. Brisk south winds will continue Wednesday as this
feature tracks eastward across the plains, subsequently pulling a
frontal boundary through the coastal waters Thursday afternoon or
evening. A brief period of offshore flow will follow the frontal
passage, with southerly winds returning by Friday.

13

Preliminary point temps/pops
Aex 81 67 82 67 / 40 20 10 10
lch 80 66 81 68 / 20 10 10 10
lft 83 70 84 70 / 10 10 10 10
bpt 83 68 83 70 / 20 10 10 10

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

Tx... None.

Gm... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 5 mi44 min E 1.9 G 4.1 68°F 60°F1014.8 hPa (+0.6)
AMRL1 - 8764227 - Amerada Pass, LA 21 mi44 min SE 4.1 G 7 69°F 64°F1014.4 hPa (+0.4)
EINL1 27 mi44 min S 15 G 17 72°F 63°F1013.9 hPa (+0.4)69°F
BYGL1 - 8762482 - Bayou Gauche, LA 43 mi44 min SE 1.9 G 2.9 69°F 75°F1015.5 hPa (+0.5)
MRSL1 - Marsh Island, LA / CSI03 49 mi104 min 11 G 14 75°F

Wind History for Tesoro Marine Terminal, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Patterson Memorial, LA5 mi48 minSSE 59.00 miPartly Cloudy68°F66°F96%1015.1 hPa
Salt Point, LA20 mi51 minSE 3 mi68°F66°F93%1014.1 hPa

Wind History from PTN (wind in knots)
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Last 24hrCalmCalmS5S5SW10SW10S10S9S9S11S10S8S6SE6SE5SE7SE6SE7S4S5S6S5S3S5
1 day agoS9S10S11
G18
S14S15----S4S6S7SW7SE4SE6SE7S5S5S4S3S4CalmS4S5SW3Calm
2 days agoSE7SE9--SE11
G22
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SE11SE10SE10SE12
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SE10S12S9SE7S7S9S7

Tide / Current Tables for Stouts Pass At Six Mile Lake, Louisiana
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Stouts Pass At Six Mile Lake
Click for Map
Mon -- 12:53 AM CDT     0.33 feet Low Tide
Mon -- 06:49 AM CDT     Moonrise
Mon -- 07:00 AM CDT     Sunrise
Mon -- 07:09 AM CDT     0.80 feet High Tide
Mon -- 01:17 PM CDT     0.18 feet Low Tide
Mon -- 07:07 PM CDT     Moonset
Mon -- 07:20 PM CDT     Sunset
Mon -- 07:38 PM CDT     0.71 feet High Tide
Mon -- 09:59 PM CDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.30.40.40.50.70.80.80.80.70.50.40.20.20.20.30.40.50.60.70.70.60.50.4

Tide / Current Tables for Shell Island, Atchafalaya Bay, Louisiana
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Shell Island
Click for Map
Mon -- 05:01 AM CDT     1.43 feet High Tide
Mon -- 06:49 AM CDT     Moonrise
Mon -- 07:00 AM CDT     Sunrise
Mon -- 09:56 AM CDT     0.33 feet Low Tide
Mon -- 05:53 PM CDT     1.25 feet High Tide
Mon -- 07:07 PM CDT     Moonset
Mon -- 07:20 PM CDT     Sunset
Mon -- 09:53 PM CDT     0.49 feet Low Tide
Mon -- 09:59 PM CDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.911.21.31.41.41.310.70.40.30.40.50.60.811.11.21.31.10.80.60.50.5

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 (8,2,3,4)
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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.