Thursday, July9, 2020
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Marine Weather and Tides
Houma, 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 6:08AMSunset 8:07PM Thursday July 9, 2020 5:39 AM CDT (10:39 UTC) Moonrise 10:34PMMoonset 9:19AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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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GMZ550 Coastal Waters From Port Fourchon La To Lower Atchafalaya River La Out 20 Nm- Coastal Waters From The Southwest Pass Of The Mississippi River To Port Fourchon Louisiana Out 20 Mile- 422 Am Cdt Thu Jul 9 2020
Today..Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 5 seconds.
Tonight..Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 5 seconds.
Friday..West winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Friday night..West winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Saturday..West winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Saturday night..West winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms after midnight.
Sunday..West winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Sunday night..West winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 4 seconds.
Monday..West winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 4 seconds.
Monday night..West winds 10 to 15 knots. Seas 2 to 4 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 422 Am Cdt Thu Jul 9 2020
Synopsis..High pressure will build from the gulf northward toward the coast for the rest of the week.


7 Day Forecast for Marine Location Near Houma, LA
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location: 29.58, -90.71     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 090859 AFDLIX

AREA FORECAST DISCUSSION National Weather Service New Orleans LA 359 AM CDT Thu Jul 9 2020

SHORT TERM. The upper level pattern continues to transition into the country being dominated by high pressure. The center of this upper ridge is over northern Mexico and will slowly deepen while it drifts north and expands eastward across the local region. Increasing subsidence and dry air in the column will substantially stunt convection today and Friday. If anyone sees rain today, it should be those MS counties in southwest and coastal portions of the state.

A digging trough through the Ohio River Valley and Appalachian Mountains may bring a few storms across northern fringe of the CWA along the northwesterly flow. If this does take place, will have to monitor for severity as NW flow can sometimes produce overachieving storms.

Moving into the weekend, continued low rain chances combined with increasing 500mb heights means high temps will likely begin to soar into the mid 90s. Saturated soils will help to maintain high low level moisture. Mid 90s air temps will mid to upper 70 dewpoints are the perfect recipe for heat advisory conditions. Expecting heat index values to range from 108 to 112 Saturday and Sunday. Lows will struggle to reach the upper 70s for many locations. In conditions like what we're expecting, New Orleans commonly sits in the 80 to 82 degree range. Thus, have bumped up overnight lows from guidance there this weekend to account for that local climatology. Any reprieve from that heat due to thunderstorms will likely be on seabreeze and/or outflow boundaries.

MEFFER

LONG TERM. The heat is . still . on, to start the extended portion of the forecast but there may be some slight relief in the form of rain returning as we push into next week. That said don't get your hopes up quite yet as we could be just on the outside and stuck in the heat. NBM looks good right now and will not make any adjustments to deviate from it yet.

Ridge that has been centered over the 4 corners and dominating much of the southern Plains and into the GOM will begin to amplify over the Rockies. This will also lead to the L/W trough over the east coast to amplify and dig into the eastern GOM late this weekend and into next week. So what impacts will this have on our area, well that depends on the strength of the s/w coming down the around the ridge and exact placement of the ridge axis. If the ridge amplifies just a touch farther west then we could move under decent northwest flow aloft. This would allow those s/w's (ridge riders) to plow on down into our area. This would not keep the region from getting hot as northwest flow tends to lead to convection developing much later in the day however, it would allow for a little relief as thunderstorms would bring some rain cooled air across portions of the area. If the ridge axis is a touch farther east then these s/w's would slide just off to the east and we remain in a rather stifling and mostly rain free environment. Even with both of these scenarios there is a good chance that the western half of the CWA (west of the I-55) stays in what is expected to be rather unbearable conditions and heat advisories could very well be needed for portions of the area next week as they are all but guaranteed late this week and into the weekend. /CAB/

AVIATION. Most terminals should be relatively good. VFR conditions are expected to continue however, a few terminals may have low cigs leading to tempo IFR. These would clear up quickly after sunrise and then VFR conditions were persist. /CAB/

MARINE. Generally light winds and low seas today through Saturday. May see some enhancement in winds from possible thunderstorm coverage in response to a MCS that drops from the upper Plains States into the MS coastal waters Saturday late night into early Sunday morning, per the latest conventional models. Otherwise, typical summer doldrums to persist for much of the forecast period. 24/RR

DSS. CODE: Blue Activities: Critical DSS sites support NASA SLS support

PRELIMINARY POINT TEMPS/POPS. MCB 92 76 93 76 / 10 10 20 10 BTR 93 76 93 77 / 10 0 10 10 ASD 93 76 94 76 / 10 0 10 10 MSY 93 79 92 81 / 10 0 10 10 GPT 91 77 92 78 / 10 10 20 10 PQL 93 76 95 76 / 20 10 30 10

LIX WATCHES/WARNINGS/ADVISORIES. LA . None. GM . None. MS . None. GM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BYGL1 - 8762482 - Bayou Gauche, LA 21 mi51 min WSW 1.9 G 2.9 78°F 84°F1014.4 hPa
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 29 mi51 min SW 4.1 G 6
AMRL1 - 8764227 - Amerada Pass, LA 34 mi51 min S 4.1 G 7 82°F 83°F1014.2 hPa
EINL1 38 mi51 min W 14 G 15 84°F 83°F1014.1 hPa78°F
CARL1 39 mi51 min 84°F
FREL1 39 mi51 min SW 1.9 G 5.1 78°F 1013 hPa
KXPY 41 mi19 min WSW 5.1 G 11 82°F 75°F
NWCL1 - 8761927 - New Canal, LA 44 mi51 min SW 5.1 G 8 80°F 85°F1013.4 hPa
GISL1 - 8761724 - Grand Isle, LA 45 mi51 min 6 G 8 84°F

Wind History for West Bank 1, Bayou Gauche, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houma-Terrebonne Airport, LA3 mi64 minN 07.00 miPartly Cloudy77°F76°F97%1014.2 hPa

Link to 5 minute data for KHUM

Wind History from HUM (wind in knots)
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1 day agoCalmSW4SW7SW8W6SW6W4W84SW4NW5CalmCalmS4CalmSE3SE3CalmCalmCalmCalmCalmS3CalmCalm
2 days agoSW7S5SW5SW3CalmSW4SW6S6SW5W4W6W5SW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Cocodrie, Terrebonne Bay, Louisiana
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Cocodrie
Click for Map
Thu -- 01:42 AM CDT     0.00 feet Low Tide
Thu -- 06:10 AM CDT     Sunrise
Thu -- 10:19 AM CDT     Moonset
Thu -- 02:32 PM CDT     1.02 feet High Tide
Thu -- 08:05 PM CDT     Sunset
Thu -- 11:33 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10000.10.20.40.50.60.70.80.90.911110.90.80.70.60.50.40.3

Tide / Current Tables for Shell Island, Louisiana
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Shell Island
Click for Map
Thu -- 12:49 AM CDT     -0.13 feet Low Tide
Thu -- 06:12 AM CDT     Sunrise
Thu -- 10:22 AM CDT     Moonset
Thu -- 10:31 AM CDT     1.34 feet High Tide
Thu -- 03:14 PM CDT     1.02 feet Low Tide
Thu -- 07:27 PM CDT     1.05 feet High Tide
Thu -- 08:08 PM CDT     Sunset
Thu -- 11:36 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.1-0.100.20.40.70.91.11.31.31.31.21.1111111110.80.5

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 New Orleans/Baton Rouge, LA (6,6,7,8)
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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 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.