Wednesday, July15, 2020
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Marine Weather and Tides
Erath, 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 6:15AMSunset 8:11PM Wednesday July 15, 2020 5:39 AM CDT (10:39 UTC) Moonrise 1:11AMMoonset 2:46PM Illumination 25% 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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GMZ435 Vermilion Bay- 319 Am Cdt Wed Jul 15 2020
Today..Southwest winds 5 to 10 knots. Bay waters a light chop.
Tonight..Southwest winds 5 to 10 knots. Bay waters a light chop.
Thursday..Southwest winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers and Thunderstorms in the morning, then chance of showers and Thunderstorms in the afternoon.
Thursday night..South winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers and Thunderstorms after midnight.
Friday..Southeast winds 5 to 10 knots. Bay waters a light chop. Slight chance of Thunderstorms in the morning. Chance of showers through the day. Chance of Thunderstorms in the afternoon.
Friday night..Southeast winds 5 to 10 knots. Bay waters a light chop.
Saturday..East winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers and Thunderstorms in the afternoon.
Saturday night..Southeast winds 5 to 10 knots. Bay waters a light chop.
Sunday..East winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers and Thunderstorms in the morning, then chance of showers and Thunderstorms in the afternoon.
Sunday night..Southeast winds 5 to 10 knots. Bay waters a light chop. Slight chance of showers and Thunderstorms after midnight.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 319 Am Cdt Wed Jul 15 2020
Synopsis.. High pressure ridging across the eastern gulf of mexico will maintain a light to sometimes moderate south to southwest flow today and Thursday. Winds will shift more southeasterly by the end of the week as the surface high becomes established across the southeast states. This will also result in a return for chances of showers and Thunderstorms over the coastal waters.


7 Day Forecast for Marine Location Near Erath, LA
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location: 29.68, -92.12     debug


Area Discussion for - Lake Charles, LA
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FXUS64 KLCH 150830 AFDLCH

Area Forecast Discussion National Weather Service Lake Charles LA 330 AM CDT Wed Jul 15 2020

DISCUSSION.

Short Term [Today and Thursday]

This morning's surface analysis indicates an area of high pressure extends across the northeastern Gulf of Mexico and an elongated area of low pressure extending across the Central Plains. While this pressure gradient is resulting in return flow across the region, lower dewpoints across the central and western Gulf of Mexico are being advected into the region resulting in surface dewpoints ONLY in the mid 70s (almost dry compared the upper 70s to low 80s dewpoints of the past week). This reduced low level moisture combined with daytime mixing is expected to result in lower heat index values during the afternoon hours. Currently, it looks like most areas should see heat index values topping out around 105 degrees this afternoon. Therefore, no Heat Advisories are being issued at this time. However, people should continue to take precautions to avoid heat illness in the heat.

Short term CAM guidance is once again hinting at a slight chance for convection to develop around the Atchafalaya basin during the afternoon hours. Any convection that does develop this afternoon should diminish around sunset with the loss of daytime heating.

During Thursday, an upper level inverted trough is expected southwestward along the northern Gulf Coast. This will provide enhanced upper level support for ascent across portions of the area. This will result in a greater potential for convection to develop and PoPs are generally higher across the entire CWA on Thursday. However, the greatest chances of seeing convection will still mainly be combined to eastern Acadiana and southeast Louisiana.

Long Term [Friday through Wednesday]

Deterministic and ensemble guidance is in good agreement that 500 hPa heights will begin to decrease through the weekend and into next week as the inverted trough continues to progress westward across the Gulf of Mexico and the 591 dam ridge shifts gradually northward. This will result in a slightly more favorable environment for ascent compared to the past seven days. This more favorable environment combined with increasing deep layer moisture will contribute to the return of a more typical summertime diurnal pattern of showers and thunderstorms. This convection will be forced primarily by mesoscale boundaries formed by different heating and therefore chances for convection will be maximized during the afternoon hours each day. Afternoon convection is expected to slowly become more widespread during the early to middle part of next week as PWATs increase to around 2 inches (which is roughly the 75th percentile of KLCH soundings for late July in the SPC sounding database). Temperatures throughout the long term period are expected to return to climatological normals for late July with highs in the low to mid 90s and lows in the mid 70s.

MARINE.

High pressure ridging across the eastern Gulf of Mexico will maintain a light to sometimes moderate south to southwest flow today and Thursday. Winds will shift more southeasterly by the end of the week as the surface high becomes established across the southeast states. This will also result in a return for chances of showers and thunderstorms over the coastal waters.

PRELIMINARY POINT TEMPS/POPS. AEX 94 75 95 74 / 10 10 30 10 LCH 91 78 92 77 / 10 10 40 10 LFT 93 77 93 75 / 10 10 60 10 BPT 92 78 93 77 / 10 10 30 10

LCH WATCHES/WARNINGS/ADVISORIES. LA . None. TX . None. GM . None.

PUBLIC . 26


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRWL1 - 8766072 - Fresh Water Canal Locks, LA 13 mi70 min 91°F
AMRL1 - 8764227 - Amerada Pass, LA 44 mi70 min 86°F
EINL1 44 mi70 min 85°F

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, LA21 mi45 minN 010.00 miFair78°F72°F84%1015.2 hPa

Link to 5 minute data for K7R4

Wind History from 7R4 (wind in knots)
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Last 24hr----------------------------------------------NW5
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Southwest Pass, Vermilion Bay, Louisiana
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Southwest Pass
Click for Map
Wed -- 02:10 AM CDT     Moonrise
Wed -- 02:58 AM CDT     1.30 feet High Tide
Wed -- 06:18 AM CDT     Sunrise
Wed -- 07:43 AM CDT     1.27 feet Low Tide
Wed -- 09:57 AM CDT     1.27 feet High Tide
Wed -- 03:45 PM CDT     Moonset
Wed -- 06:59 PM CDT     -0.01 feet Low Tide
Wed -- 08:09 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.21.31.31.31.31.31.31.31.31.31.31.21.10.90.60.40.20-000.20.40.6

Tide / Current Tables for Lighthouse Point, Louisiana
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Lighthouse Point
Click for Map
Wed -- 02:10 AM CDT     Moonrise
Wed -- 02:14 AM CDT     1.60 feet High Tide
Wed -- 05:59 AM CDT     1.56 feet Low Tide
Wed -- 06:18 AM CDT     Sunrise
Wed -- 09:13 AM CDT     1.56 feet High Tide
Wed -- 03:45 PM CDT     Moonset
Wed -- 05:15 PM CDT     -0.01 feet Low Tide
Wed -- 08:09 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.51.61.61.61.61.61.61.61.61.61.61.51.310.70.30.1-000.10.30.60.91.2

Weather Map
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wmap_A
GEOS Local Image of SouthCentralPlains    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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Lake Charles, LA (6,6,7,8)
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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 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.