Thursday, August13, 2020
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Marine Weather and Tides
Leesville, LA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:35AMSunset 7:58PM Thursday August 13, 2020 12:52 PM CDT (17:52 UTC) Moonrise 12:22AMMoonset 2:35PM Illumination 27% Phase: Waning Crescent; Moon at 24 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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GMZ432 Calcasieu Lake- 1000 Am Cdt Thu Aug 13 2020
Rest of today..Southwest winds 5 to 10 knots. Lake waters a light chop. Slight chance of showers and Thunderstorms in the afternoon.
Tonight..Southwest winds 5 to 10 knots. Lake waters a light chop.
Friday..Southwest winds 5 to 10 knots. Lake waters a light chop. Slight chance of showers and Thunderstorms.
Friday night..Southwest winds 5 to 10 knots. Lake waters a light chop.
Saturday..Southwest winds 5 to 10 knots. Lake waters a light chop. Slight chance of showers and Thunderstorms in the afternoon.
Saturday night..Southwest winds 5 to 10 knots. Lake waters a light chop.
Sunday..West winds 5 to 10 knots. Lake waters a light chop. Slight chance of showers and Thunderstorms in the morning, then chance of showers and Thunderstorms in the afternoon.
Sunday night..West winds 5 to 10 knots. Lake waters a light chop. Slight chance of showers and Thunderstorms through the night.
Monday..North winds 5 to 10 knots. Lake waters a light chop. Chance of showers and Thunderstorms.
Monday night..Northeast winds 5 to 10 knots. Lake waters a light chop. 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 1000 Am Cdt Thu Aug 13 2020
Synopsis.. Light southwest to west winds will continue through the weekend as weak surface high pressure will be found across the northern gulf of mexico. Isolated to widely scattered showers and Thunderstorms will be possible.


7 Day Forecast for Marine Location Near Leesville, LA
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location: 31.15, -93.26     debug


Area Discussion for - Lake Charles, LA
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FXUS64 KLCH 131743 AFDLCH

Area Forecast Discussion National Weather Service Lake Charles LA 1243 PM CDT Thu Aug 13 2020

DISCUSSION. 18Z TAFS

AVIATION. VFR conditions along with light south to southwesterly winds will prevail through the evening. Scattered thunderstorms have already begun developing within the higher moisture area across central and south central Louisiana this afternoon. Maintained VCTS at all terminals with tempo groups added for the time frame of most widespread convection. Storms will weaken and dissipate by around sunset with VFR prevailing overnight through Friday morning.

Jones

PREV DISCUSSION. /issued 1020 AM CDT Thu Aug 13 2020/

DISCUSSION . Wx map shows high pressure ridge across Northern Gulf and Southern U.S. keeping a light pressure gradient, and light southwest winds across the region. Radar showing only isolated showers across the South Central Louisiana coast and adjacent coastal waters.

Larger concentration of thunderstorms across Northeast Louisiana and Central Mississippi expected to move south to southeast today. While the parent storms may not impact the region, the outflow generated by this may interact with afternoon showers and thunderstorms over Central and South Central Louisiana to provide additional coverage. Latest HRRR guidance continues with this thinking, as well as the inherited forecast with higher chances (40-50%) across the eastern Parishes of Central and South Central Louisiana.

DML

PREV DISCUSSION . /issued 557 AM CDT Thu Aug 13 2020/

DISCUSSION . 13/12Z TAF Issuance.

AVIATION . Radar imagery showing some isolated showers once again this morning over the Gulf waters, with some of this activity pushing into coastal south central LA. VFR is prevailing all sites, with mainly high clouds noted on satellite imagery. Some light VSBY restrictions are also noted in regional observations, but none at the terminals thus far. Expect VFR to continue prevailing through the period, with mainly light south to southwest SFC winds. A little better chance today for afternoon convection, mainly KAEX and the Acadiana terminals, but at this time will continue with VCTS.

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PREV DISCUSSION . /issued 440 AM CDT Thu Aug 13 2020/

SYNOPSIS . Persistent ridging aloft noted on the latest UA analysis and WV imagery acrs W TX and the upper Rio Grande Valley, with yesterday's shortwave trough axis now settled over the lower MS Valley. LAPS precip water analysis and GOES TPW indicate considerable moisture over the region, especially the eastern zones where PWAT is near 2 inches. At the sfc, high pres continues to ridge acrs the northern Gulf, with onshore flow resulting in another warm and muggy night acrs the region.

A few nocturnal showers beginning to develop over the coastal waters per recent KLCH radar images. Otherwise, generally quiet conditions acrs the area tonight, with a cluster of storms noted northeast of the area acrs far NE LA and W MS.

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DISCUSSION . Few changes expected from today through the weekend as the region remains on the eastern periphery of a ridge that will gradually retrograde acrs the desert SW and a trough acrs the SE states. A moist airmass will remain acrs the area, with PWATs ranging from 1.7 inches to around 2.0 inches. Daytime heating interacting with seabreeze/mesoscale boundaries acrs the area will allow for convection to develop by early aftn, with the best chcs each day acrs the lower Atchafalaya Basin and Acadiana region.

Daytime temperatures will continue to run near or just abv normal, with highs mostly in the lower to middle 90s. A few locations could reach the upper 90s (maybe even the 100 degree mark) acrs inland SE TX. With dewpoints staying in the lower to middle 70s through the day, heat index values are expected to climb to between 102 and 110 degrees during peak heating. A heat advisory has been issued for SE TX for today where max apparent temps/heat indices will be between 108 and 111 degrees during the aftn.

Global models continue to advertise a possible FROPA early next week (Monday into Tuesday), as the ridge to the west becomes amplified in response to shortwave energy digging acrs the eastern CONUS. Expect convection to increase along and ahead of the boundary as it encounters the warm and moist airmass acrs the region. Model guidance differs on how much of a southward push the front will get, and this will ultimately impact both precip chcs and temperatures (or at least dewpoint temps), especially from Tuesday on. GFS appears a little stronger in bringing lower dewpoints/drier air into the region, while the ECMWF and Canadian both trend a little slower and less aggressive in this respect. NBM temps/dewpoints tend to favor the latter solution at this time. As for PoPs, NBM keeps chc values through Wednesday, although these numbers could trend a little lower over the next several days should guidance become more consistent in pushing the front offshore, allowing drier air to filter into the area.

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MARINE . Light southwest to west winds will continue through the weekend as weak surface high pressure will be found across the northern Gulf of Mexico. Winds will remain around 10 KT or less, with seas of 1 to 2 feet, so no advisory or caution flags are anticipated. Isolated to widely scattered showers and thunderstorms will be possible, mainly from late night through early aftn. Winds and seas could be briefly higher near the storms, along with occasional cloud to water lightning.

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PRELIMINARY POINT TEMPS/POPS. AEX 74 94 75 96 / 10 30 10 30 LCH 78 93 78 93 / 10 20 0 30 LFT 77 93 77 94 / 10 40 10 40 BPT 77 93 78 94 / 10 20 0 20

LCH WATCHES/WARNINGS/ADVISORIES. LA . None. TX . Heat Advisory until 7 PM CDT this evening for TXZ180-201-215-216- 259>262.

GM . None.

AVIATION . 66


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LCLL1 - 8767816 - Lake Charles, LA 64 mi53 min 89°F 89°F1016.3 hPa (+0.4)
CAPL1 - 8768094 - Calcasieu Pass, LA 96 mi53 min WSW 7 G 8.9 86°F 88°F1015 hPa (+0.7)
PORT2 - 8770475 - Port Arthur, TX 96 mi53 min S 4.1 G 6 89°F 88°F1016.1 hPa (+0.3)

Wind History for Port Arthur, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Polk, Polk AAF Ft Polk, LA8 mi55 minW 310.00 miA Few Clouds90°F73°F59%1016.7 hPa
Ft. Polk - Peason Ridge, LA17 mi56 minVar 310.00 miFair92°F73°F56%1015.2 hPa
Ft. Polk - Fullerton Landing Strip, LA19 mi59 minVar 410.00 miA Few Clouds91°F75°F59%1017.8 hPa
De Ridder, Beauregard Parish Airport, LA22 mi58 minWSW 44.00 miMostly Cloudy with Haze90°F72°F57%1017.3 hPa

Link to 5 minute data for KPOE

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Last 24hrW5W7W7W5NW3S10S7S9S6S5S6SE4S4S3S3S3S3S3CalmSW4SW9SW7W7W3
1 day agoS9W4S8S7S7S6S8S5S4S4S7S6S6SW3S4S4CalmCalmCalmS5SW8W11SW8SW6
2 days agoS8S8S9SW7S8S10S6S6S6S5S4S3S4S4CalmSW3SW3CalmCalmS3SW6SW7SW6S9

Tide / Current Tables for Calcasieu Pass, Lighthouse wharf, Louisiana
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Calcasieu Pass
Click for Map
Thu -- 01:18 AM CDT     1.72 feet High Tide
Thu -- 01:24 AM CDT     Moonrise
Thu -- 06:40 AM CDT     Sunrise
Thu -- 07:04 AM CDT     1.35 feet Low Tide
Thu -- 09:29 AM CDT     1.39 feet High Tide
Thu -- 03:32 PM CDT     Moonset
Thu -- 05:47 PM CDT     0.03 feet Low Tide
Thu -- 07:55 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.71.71.71.61.51.41.41.41.41.41.41.31.210.70.50.20.100.10.40.711.4

Tide / Current Tables for Calcasieu Pass, Lighthouse wharf, Louisiana (2)
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Calcasieu Pass
Click for Map
Thu -- 01:24 AM CDT     Moonrise
Thu -- 03:05 AM CDT     1.92 feet High Tide
Thu -- 06:40 AM CDT     Sunrise
Thu -- 03:32 PM CDT     Moonset
Thu -- 05:20 PM CDT     0.12 feet Low Tide
Thu -- 07:55 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.91.91.91.91.91.91.81.81.71.61.51.20.90.60.40.20.10.10.30.50.91.31.7

Weather Map
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wmap_A
GEOS Local Image of    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Lake Charles, LA (13,3,4,5)
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Ground Weather Radar Station Fort Polk, LA
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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 numerous 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.