Monday, January25, 2021
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Marine Weather and Tides
Kaplan, LA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:59AMSunset 5:39PM Monday January 25, 2021 2:12 PM CST (20:12 UTC) Moonrise 2:54PMMoonset 4:28AM Illumination 93% Phase: Waxing Gibbous; Moon at 12 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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GMZ452 Coastal Waters From Intracoastal City To Cameron La Out 20 Nm- 1010 Am Cst Mon Jan 25 2021
.dense fog advisory in effect until 6 pm cst this evening...
Rest of today..South winds 10 to 15 knots. Seas 2 to 4 feet. Patchy dense fog through the day. Slight chance of showers late in the morning. Chance of showers and Thunderstorms in the afternoon.
Tonight..Southwest winds 10 to 15 knots becoming northwest 5 to 10 knots after midnight. Seas 2 to 4 feet. Areas of dense fog in the evening. Patchy fog after midnight. Chance of rain showers and slight chance of Thunderstorms through the night.
Tuesday..Northeast winds 5 to 10 knots. Seas 1 to 3 feet. Slight chance of rain showers.
Tuesday night..Northeast winds 5 to 10 knots. Seas 1 to 3 feet. Chance of rain showers and slight chance of Thunderstorms in the evening, then slight chance of rain showers after midnight.
Wednesday..North winds 15 to 20 knots. Seas 2 to 4 feet. Slight chance of rain showers in the morning.
Wednesday night..North winds 15 to 20 knots. Seas 1 to 3 feet.
Thursday..Northeast winds 15 to 20 knots. Seas 1 to 3 feet.
Thursday night..Northeast winds 10 to 15 knots. Seas 1 foot or less.
Friday..East winds 5 to 10 knots. Seas 1 foot or less.
Friday night..Southeast winds 10 to 15 knots. Seas 1 to 2 feet.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 1010 Am Cst Mon Jan 25 2021
Synopsis.. Patchy dense fog will continue across the coastal waters through the rest of today, with a cold front forecast to push through the area tonight. Conditions will remain favorable for marine fog formation ahead of the front, which is expected to stall over southeast louisiana on Tuesday. This boundary will meander in this general area, perhaps retreating a little back toward the west Tuesday night, before being overtaken by a second, stronger cold front Wednesday morning. This front will usher in a modest to strong offshore flow along with drier air that will put an end to any marine fog.


7 Day Forecast for Marine Location Near Kaplan, LA
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location: 29.31, -92.5     debug


Area Discussion for - Lake Charles, LA
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FXUS64 KLCH 251759 AFDLCH

Area Forecast Discussion National Weather Service Lake Charles LA 1159 AM CST Mon Jan 25 2021

DISCUSSION. For the 25/18Z TAF Issuance.

AVIATION. A weak surface cold front located from northwest Louisiana into east central Texas will continue to move eastward across the forecast area this afternoon and evening. Ahead of the front, expect IFR ceilings with scattered showers and possibly a few thunderstorms. There will also be somewhat breezy south winds with gusts at times around 20 knots.

As the front moves through winds will drop off and become out of the west and northwest. Ceilings will then rise to MVFR and eventually VFR.

However, if skies clear out sooner than expected overnight, some patchy fog may form with visibilities MVFR or lower.

Rua

PREV DISCUSSION. /issued 552 AM CST Mon Jan 25 2021/

DISCUSSION . 25/12Z TAF Issuance.

AVIATION . Cigs have been rather vrbl at all but the Acadiana terminals overnight where prevailing IFR cigs have recently lowered to LIFR. While cigs will likely continue to vary, expect generally IFR to low MVFR to prevail through the day. SHRA/TSRA will increase today, with the best chcs expected ahead of and along a frontal boundary during the aftn and into the early evening. Gusty southerly winds can be expected, with winds diminishing and shifting southwesterly as the front moves through the region this evening.

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PREV DISCUSSION . /issued 453 AM CST Mon Jan 25 2021/

DISCUSSION . Soupy airmass remains in place across the area this morning, though elevated southerly winds have held fog largely at bay, with the exception being parts of coastal south central LA where winds have remained a little lighter. Trimmed back the inland dense fog advisory to remove Jefferson and Cameron, but left the areal extent of the marine advisory as is. The inherited SCA is on the marginal side based on modeled wave heights, but opted to keep it going through 15Z with 7FT seas not too far beyond 60nm.

Lead shortwave trof ejecting out of a broader WRN CONUS trof will drag a frontal boundary into the area later this afternoon, encountering sufficient MSTR but with limited forcing for ascent and weak instability. Areas of rain/scattered showers are expected to precede and accompany the front, with an isolated thunderstorm or two not out of the question. Very warm temperatures are expected this afternoon despite the ample cloud cover and areas of PCPN, with readings expected to top out around 10 degrees above seasonal normals.

The boundary is expected to rather sluggishly continue easing its way through the area tonight, just reaching the lower Atchafalaya River by early TUE morning, before becoming largely stationary. Drier air is expected to follow the frontal passage, which will yield cooler overnight lows and begin to bring an end to the threat of marine fog. Warm temperatures will continue across the area on TUE with a fair amount of cloud cover still lingering, and rain chances continuing near the stalled front, which is expected to retreat a bit to the west TUE night before being overtaken by a much stronger front WED morning driven through by ejecting SW CONUS trof. Brisk north winds and much cooler/drier air are forecast in the wake of this boundary, with lows in the 30s expected both THU and FRI mornings underneath deep layer ridging.

A warming trend is forecast FRI into the weekend as this ridge slides off to the east and return flow becomes established ahead of a fast moving upper trof progged to send another front through the area on SUN.

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MARINE . Patchy dense fog will continue across the coastal waters through the rest of today, with a cold front forecast to push through the area tonight. Conditions will remain favorable for marine fog formation ahead of the front, and dense fog advisory in effect for today may need to be extended into tonight. The boundary is expected to stall over SE LA on TUE, then meander in this general area, perhaps retreating a little back toward the west TUE night, before being overtaken by a second, stronger cold front Wednesday morning. This front will usher in a modest to strong offshore flow along with drier air that will put an end to any marine fog.

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PRELIMINARY POINT TEMPS/POPS. AEX 75 49 70 47 / 60 20 10 10 LCH 73 54 71 52 / 50 30 10 10 LFT 75 59 73 56 / 60 50 20 30 BPT 75 53 72 52 / 40 10 10 10

LCH WATCHES/WARNINGS/ADVISORIES. LA . None. TX . None. GM . Dense Fog Advisory until 6 PM CST this evening for GMZ435-450- 452-455-470-472-475.

Small Craft Exercise Caution through late tonight for GMZ470-472- 475.



AVIATION . 07


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRWL1 - 8766072 - Fresh Water Canal Locks, LA 20 mi54 min ESE 12 G 15
KSCF 36 mi62 min SSE 16 68°F 68°F
CAPL1 - 8768094 - Calcasieu Pass, LA 55 mi54 min S 13 G 16 63°F 60°F1004.9 hPa

Wind History for Calcasieu Pass, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KVNP

Wind History from VNP (wind in knots)
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Tide / Current Tables for Lighthouse Point, Louisiana
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Lighthouse Point
Click for Map
Mon -- 04:27 AM CST     Moonset
Mon -- 05:30 AM CST     -0.84 feet Low Tide
Mon -- 07:00 AM CST     Sunrise
Mon -- 02:51 PM CST     Moonrise
Mon -- 03:27 PM CST     1.44 feet High Tide
Mon -- 05:40 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.50-0.3-0.7-0.8-0.8-0.7-0.5-0.20.20.60.91.21.41.41.41.41.31.31.31.31.21.2

Tide / Current Tables for Southwest Pass, Vermilion Bay, Louisiana
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Southwest Pass
Click for Map
Mon -- 04:27 AM CST     Moonset
Mon -- 07:00 AM CST     Sunrise
Mon -- 07:14 AM CST     -0.68 feet Low Tide
Mon -- 02:51 PM CST     Moonrise
Mon -- 04:11 PM CST     1.17 feet High Tide
Mon -- 05:40 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.70.50.2-0.1-0.4-0.6-0.7-0.6-0.5-0.30.10.40.711.11.21.21.11.11.1111

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.
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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.