Friday, August7, 2020
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Marine Weather and Tides
The Woodlands, TX

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 6:43AMSunset 8:11PM Friday August 7, 2020 12:34 PM CDT (17:34 UTC) Moonrise 9:53PMMoonset 9:18AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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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GMZ335 Galveston Bay- 1037 Am Cdt Fri Aug 7 2020
Rest of today..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms late in the morning.
Tonight..South winds 5 to 10 knots. Bay waters smooth.
Saturday..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and isolated Thunderstorms in the morning.
Saturday night..South winds 5 to 10 knots. Bay waters smooth.
Sunday..South winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. A slight chance of showers and Thunderstorms.
Sunday night..South winds 5 to 10 knots. Bay waters smooth.
Monday..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms.
Monday night..South winds 5 to 10 knots. Bay waters smooth.
Tuesday..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Tuesday night..South winds 5 to 10 knots. Bay waters smooth.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1037 Am Cdt Fri Aug 7 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Surface high pressure over the northeast gulf of mexico will continue to bring light winds and low seas to the area. A more pronounced onshore flow is anticipated this weekend through early next week as the high moves further east.


7 Day Forecast for Marine Location Near The Woodlands, TX
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location: 30.11, -95.52     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 071708 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 1208 PM CDT Fri Aug 7 2020

AVIATION. PW values are a bit lower than yesterday and convective temps are a bit higher so showers will probably struggle to develop this afternoon. Will not mention VCSH/VCTS today. Generally VFR conditions are expected today and tonight although there could once again be some patchy morning fog at the usual spots around sunrise. Models diverge with rain chances on Saturday with the CAMs looking more aggressive with rain chances. Will keep things dry for now but a VCSH may be needed for Saturday afternoon if models come into better agreement. 43

PREV DISCUSSION. /ISSUED 414 AM CDT Fri Aug 7 2020/

SHORT TERM [Today Through Saturday] .

While surface moisture today will be in place, the mid to upper levels will be a little too dry for good chances of convection. PWI's will be roughly 1.75 in the area at the time of max heating, and the temperatures are forecasted to be in the low to upper 90s. This passes the low 90s convective temperatures across the area. With that said, a few stray thunderstorms are possible in the area, but not to the point of being able to say exactly where. Right now, it looks like subsidence from the high will keep any build up from happening. Lows will get down to the mid 70s across the are overnight with mostly clear skies.

Tomorrow moisture returns to the mid to upper levels elevating chances of precipitation. However, vicinity of the high will still help keep chances somewhat low. Showers building over the coastal waters could advect inland as the evening sea breeze kicks in and further develops into thunderstorms, but coverage will be spotty. PWIs will be higher, along with higher instability; the possibility of a thunderstorm is possible. 35

LONG TERM [Saturday Night through Friday] .

Mid/upper level ridging across the state at the start of the long term period will edge westward and will be centered in/ around the Arizona/New Mexico border for much of next week. Our area will generally be positioned between this ridge off to our west and ridging that will be off the SE U.S. coast. A persistent onshore flow and our positioning between the two ridges should allow for almost daily mainly diurnally driven shower and/or thunderstorm chances.

Little change in temperatures can be expected, with lows in the mid to upper 70s inland and in the lower 80s near the coast, and highs in the mid to upper 90s inland and in the lower 90s near the coast. We will need to keep an eye on our max heat index values with current forecasts showing some elevated readings Sunday through Wednesday. Even if there is no heat advisory, always protect yourself and your loved ones, including pets, if you plan to spend time outdoors or in areas with poor ventilation. Always practice heat safety! 42

MARINE .

No real changes from the previous marine discussion. Light winds and low wave heights through the weekend. Early next week, stronger onshore flow returns. So the typical summer pattern of stronger winds at night and lighter winds during the day will be the pattern in the coastal waters. Bay areas will see stronger day time winds and lighter winds at night. 35

PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 97 76 97 75 99 / 10 10 0 0 10 Houston (IAH) 96 76 94 77 95 / 10 10 20 0 20 Galveston (GLS) 92 83 90 82 93 / 10 10 20 0 20

HGX WATCHES/WARNINGS/ADVISORIES. TX . NONE. GM . NONE.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 30 mi46 min S 5.1 G 8 89°F 89°F1017.3 hPa
MGPT2 - 8770613 - Morgans Point, TX 41 mi46 min SE 6 G 9.9 88°F 88°F1018.1 hPa
EPTT2 - 8771013 - Eagle Point, TX 54 mi46 min ESE 4.1 G 5.1 87°F 88°F1017.6 hPa
RLOT2 - 8770971 - Rollover Pass, TX 67 mi46 min SE 6 G 8.9 86°F1018.2 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston, Hooks Memorial Airport, TX3 mi41 minVar 310.00 miFair90°F72°F56%1017.8 hPa
Houston Intercontinental Airport, TX13 mi41 minSSE 610.00 miPartly Cloudy90°F73°F59%1017.8 hPa
Conroe, Montgomery County Airport, TX18 mi41 minS 710.00 miFair93°F73°F54%1018 hPa

Link to 5 minute data for KDWH

Wind History from DWH (wind in knots)
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Last 24hrS7SE4SE45SE5SE8S5S43S4S4S3S3S3CalmCalmCalmCalmCalmCalmCalm543
1 day agoSW7S3SW4S4SW4SW6S5S6S5S6S63CalmCalmS3CalmCalmCalmCalmCalmCalmS4SW8--
2 days agoW64SW9SW6SW7CalmE4CalmS3SE3S3CalmCalmCalm3CalmCalmCalmCalmCalmSW6W8SW6S5

Tide / Current Tables for Lynchburg Landing, San Jacinto River, Texas
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Lynchburg Landing
Click for Map
Fri -- 06:22 AM CDT     0.32 feet Low Tide
Fri -- 06:43 AM CDT     Sunrise
Fri -- 10:15 AM CDT     Moonset
Fri -- 01:38 PM CDT     1.11 feet High Tide
Fri -- 07:55 PM CDT     0.77 feet Low Tide
Fri -- 08:07 PM CDT     Sunset
Fri -- 10:51 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.80.70.60.50.40.30.30.40.60.70.911.11.11.110.90.80.80.80.80.80.9

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Fri -- 12:14 AM CDT     0.57 feet High Tide
Fri -- 06:43 AM CDT     Sunrise
Fri -- 07:31 AM CDT     -0.05 feet Low Tide
Fri -- 10:15 AM CDT     Moonset
Fri -- 02:29 PM CDT     0.59 feet High Tide
Fri -- 08:07 PM CDT     Sunset
Fri -- 08:38 PM CDT     0.35 feet Low Tide
Fri -- 10:51 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.60.50.40.20.10-0-000.10.30.40.50.60.60.50.50.40.40.40.30.40.4

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 Houston/Galveston, TX (13,3,4,5)
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Ground Weather Radar Station Houston/Galveston, TX
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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.