Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Patterson, 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 7:00AMSunset 7:17PM Thursday March 23, 2017 3:08 AM CDT (08:08 UTC) Moonrise 3:02AMMoonset 2:06PM Illumination 19% Phase: Waning Crescent; Moon at 25 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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GMZ455 Coastal Waters From Lower Atchafalaya River To Intracoastal City La Out 20 Nm- 1003 Pm Cdt Wed Mar 22 2017
Rest of tonight..West winds 5 to 10 knots. Seas 1 foot or less. Areas of dense fog after midnight.
Thursday..Northeast winds 5 to 10 knots becoming southeast in the afternoon. Seas 1 foot or less.
Thursday night..Southeast winds 15 to 20 knots. Seas 1 to 3 feet.
Friday..Southeast winds 15 to 20 knots. Seas 2 to 4 feet. Slight chance of showers and Thunderstorms in the afternoon.
Friday night..South winds 15 to 20 knots. Seas 2 to 4 feet. Chance of showers and Thunderstorms.
Saturday..Southwest winds 15 to 20 knots. Seas 2 to 4 feet. Chance of showers and Thunderstorms.
Saturday night..South winds 5 to 10 knots. Seas 1 to 3 feet.
Sunday..South winds 10 to 15 knots. Seas 1 foot or less.
Sunday night..South winds 10 to 15 knots. Seas 1 to 3 feet.
Monday..South winds 10 to 15 knots. Seas 2 to 4 feet. Slight chance of showers and Thunderstorms.
Monday night..South winds 10 to 15 knots. Seas 2 to 4 feet. 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 1003 Pm Cdt Wed Mar 22 2017
Synopsis.. Weak high pressure centered over the north central gulf will allow for mainly light onshore winds to persist through Thursday. Winds and seas will increase on Thursday night into Friday in advance of an approaching low pressure system. This area of low pressure is expected to produce showers and Thunderstorms that will move through the coastal waters Friday evening through Saturday.

7 Day Forecast for Marine Location Near Patterson, LA
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location: 29.37, -91.39     debug


Area Discussion for - Lake Charles, LA
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Fxus64 klch 230446
afdlch
area forecast discussion
national weather service lake charles la
1146 pm cdt Wed mar 22 2017

Aviation Dense fog has developed at bpt and will continue to
develop at the terminals of lch, lft, ara and aex as the night
progresses. This as as moist low level southerlies are maintained
and inland temperatures continue cool. Lifr visibility and
accompanying low ceilings will occur with the exception of
aex where ifr is expected to prevail. Conditions will improve at
all sites toward mid-morning.

Prev discussion /issued 1018 pm cdt Wed mar 22 2017/
discussion...

previous forecast overall in good shape, with the major change of
note being the addition of areas of dense fog along with a dense
fog advisory for a good part of the area for the overnight into
early Thu morning hours. Same conditions are generally in place
tonight that have led to fog the past several nights, and despite
numerical MOS not being quite as supportive, short range/high
resolution guidance is quite bullish. Included areas generally
south of a quasi-stationary frontal boundary draped NW to se
through E central la. Risk of stratus rather than fog will
increase toward morning over E tx and into W central la with llj
development downstream of an approaching vigorous southern stream
trof.

13
prev discussion... /issued 624 pm cdt Wed mar 22 2017/
aviation...VFR expected to hold through midnight. Another
round of dense fog is then on tap as moist low level southerlies are
maintained and inland temperatures cool. Southern terminals of
ara, lft, lch and bpt should see rounds of lifr visibility and
accompanying low ceilings. Aex should decrease to no lower than
ifr. Conditions will improve at all sites toward mid-morning.

Prev discussion... /issued 321 pm cdt Wed mar 22 2017/
discussion... A stalled frontal boundary lies roughly from
northeast texas, across central louisiana, to mobile this
afternoon, however a ridge aloft is keeping convection from
developing.

With moisture remaining elevated south of this front, fog/dense
fog is a good bet again tonight/tomorrow morning.

During Thursday the weak frontal boundary to the north will
gradually return north and wash out as low pressure develops over
the central plains. Locally, the upper ridge will remain in place
through the day keeping another dry weather day on tap, however
south winds will increase a bit as the surface low organizes to
the northwest. The surface low and upper disturbance will travel
east through late Thursday and Friday across the central and
southern plains.

By Friday afternoon lift will increase across SE tx and west la as
the upper trough draws closer. Decent instability and shear will
also be in place by afternoon, which will create the possibility
of strong to severe storms as a MCS pushes east across the region.

Cooler air is not expected to filter in behind the line of storms,
however high temps will be held down a few degrees as cloud cover
will be more dense than over the past several days.

Weak ridging is expected for Saturday afternoon and Sunday,
however another round of rain may occur early next week as another
disturbance pushes across the region. Slightly cooler temperatures
are expected by the middle of next week.

Marine... Light onshore winds are expected to start Thursday,
however as low pressure develops over the plains in the afternoon winds
will increase. Winds over the coastal waters will approach sca
criteria by early Friday then gradually decrease through early
Saturday as the system departs.

Preliminary point temps/pops
Aex 61 85 64 79 / 0 0 10 30
lch 61 82 65 78 / 0 0 10 30
lft 63 85 68 79 / 0 0 10 20
bpt 63 82 67 79 / 0 0 10 40

Lch watches/warnings/advisories
La... Dense fog advisory until 9 am cdt Thursday for laz027-030>033-
041>045-052>055-073-074.

Tx... Dense fog advisory until 9 am cdt Thursday for txz180-201-215-
216-259>262.

Gm... None.

Aviation... 23


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EINL1 0 mi51 min NW 6 G 7 68°F 59°F1020.5 hPa67°F
AMRL1 - 8764227 - Amerada Pass, LA 6 mi51 min W 1.9 G 2.9 66°F 62°F1020.9 hPa
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 22 mi51 min W 1.9 G 2.9 65°F 58°F1021.1 hPa
KSCF 31 mi34 min W 8 72°F 66°F
MRSL1 - Marsh Island, LA / CSI03 36 mi129 min 8 G 9.9 71°F

Wind History for LAWMA, Amerada Pass, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Salt Point, LA15 mi76 minN 0 mi69°F66°F93%1020.9 hPa
Patterson Memorial, LA24 mi73 minN 01.00 miFog/Mist64°F63°F96%1021.6 hPa

Wind History from P92 (wind in knots)
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Last 24hrSW4W54W3W4N5NW5544W544SW63SW53CalmW3CalmCalmCalmCalmW5
1 day agoSW4543SW3CalmSW4SW5SW6545SW6SW63334SW4W35SW55SW5
2 days agoSW4SW5W5W3W4CalmSW4SW53SW55SW7SW74SW5SW333343Calm3SW4

Tide / Current Tables for Eugene Island, Louisiana
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Eugene Island
Click for Map
Thu -- 04:01 AM CDT     Moonrise
Thu -- 05:32 AM CDT     0.11 feet Low Tide
Thu -- 07:05 AM CDT     Sunrise
Thu -- 03:06 PM CDT     1.70 feet High Tide
Thu -- 03:06 PM CDT     Moonset
Thu -- 06:58 PM CDT     1.38 feet Low Tide
Thu -- 07:18 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.310.60.30.10.10.20.30.50.81.11.31.51.71.71.61.51.41.41.41.41.41.5

Tide / Current Tables for Lawma, Amerada Pass, Louisiana
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Lawma
Click for Map
Thu -- 04:01 AM CDT     Moonrise
Thu -- 07:05 AM CDT     Sunrise
Thu -- 07:47 AM CDT     0.01 feet Low Tide
Thu -- 03:03 PM CDT     1.51 feet High Tide
Thu -- 03:06 PM CDT     Moonset
Thu -- 07:18 PM CDT     Sunset
Thu -- 08:40 PM CDT     0.89 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.90.80.70.60.30.2000.10.30.611.21.41.51.41.31.110.90.90.91

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 (4,6,7,8)
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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.