Tuesday, March31, 2020
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Marine Weather and Tides
Morgan's Point, 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 7:08AMSunset 7:39PM Tuesday March 31, 2020 8:35 PM CDT (01:35 UTC) Moonrise 10:57AMMoonset 12:26AM Illumination 55% Phase: First Quarter Moon; Moon at 8 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- 153 Pm Cdt Tue Mar 31 2020
Tonight..North winds 10 to 15 knots becoming northeast after midnight. Bay waters slightly choppy.
Wednesday..East winds 10 to 15 knots becoming southeast in the afternoon. Bay waters slightly choppy.
Wednesday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Thursday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and isolated Thunderstorms in the afternoon.
Thursday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and isolated Thunderstorms.
Friday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
Friday night..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms in the evening, then showers and Thunderstorms likely after midnight.
Saturday..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Saturday night..East winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers in the evening. Isolated Thunderstorms. A slight chance of showers after midnight.
Sunday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the morning. Isolated Thunderstorms. A chance of showers in the afternoon.
Sunday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and isolated Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 153 Pm Cdt Tue Mar 31 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Gusty offshore winds have conditions on the waters easily above the caution threshold, and near the small craft advisory threshold. These winds will gradually diminish into tonight, keeping seas from building excessively. Onshore flow is set to return to the bays as early as Wednesday morning, and across all of the coastal waters by Wednesday night. A wet weather pattern is forecast to set up Thursday and continue through the weekend with the greatest potential for showers and Thunderstorms Friday and Saturday.


7 Day Forecast for Marine Location Near Morgan's Point, TX
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location: 29.66, -95.01     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 312326 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 626 PM CDT Tue Mar 31 2020

AVIATION [00Z TAF Issuance].

Today's gusty north winds look to taper off heading into the evening with VFR conditions expected to remain in place through the remainder of the TAF period. Winds become light and variable overnight before an onshore flow redevelops tomorrow as surface high pressure advances to the east. Winds tomorrow afternoon pick back up to around 10 to 15 knots, becoming near due south by the late afternoon. No celling or visibility concerns with scattered high clouds developing by tomorrow afternoon.

Cady

PREV DISCUSSION. /ISSUED 330 PM CDT Tue Mar 31 2020/

SHORT TERM (Tonight Through Wednesday) .

With a cold front through our area, northwest and north winds are in place across Southeast Texas, with several spots gusting over 20 mph today. As high pressure settles in over East Texas tonight, winds are expected to diminish gradually into tonight. With a mostly clear sky expected and weak cold advection in place, expect overnight temperatures considerably chillier than in recent nights. Have things dipping as low as the upper 40s in our far north, but the vast majority of the area should bottom out in the lower to middle 50s. Nearer the coast, low temps look to hold around or just above 60 degrees.

Tomorrow, the center of the surface high will drift eastward, which will mean winds picking up, and veering through easterly to southeasterly by tomorrow evening. This looks to arrest any further fall in 850 temps, so while we should easily be cooler than our recent hot streak, I'm not sure we're be much cooler tomorrow than today, if at all. One key may be just how much cirrus cover we get as zonal flow aloft sets up, and we pick up a partial connection with the East Pacific at higher altitudes. A real thick cirrus veil may well keep us lower in the 70s. Should thinner cirrus prevail, increased insolation may allow for temps higher in the 70s to emerge. 25

LONG TERM (Wednesday night through Tuesday) .

Onshore winds return Wednesday evening and this will begin the moisture pump as well as commence a period of cloudier skies accompanied with periodic rain and thunderstorm activity. Southern Rocky Mountain energy traveling eastward into the Texas Panhandle early Thursday will generate a surface low that will descend into the central Red River Valley through Friday. The onshore pressure gradient between eastern U.S. high pressure and lowering western Plains pressure/troughing will strengthen regional southerlies to moderate levels Thursday. Thursday begins somewhat cooler (inland mid to upper 50s/southern county lower 60s) with a gusty, overcast afternoon warming into the slightly above normal middle 70s up north to near 80 F closer to the coast. West-to-east precipitation chances will be on the rise as the southern branch of the jet settles in across the state in tandem with a weak ripple moving across a moistened lower atmosphere. A healthy 8-85H warm nose may preclude much areawide precipitation Thursday but, if the convective temperature threshold of the upper 70s to lower 80s are achieved earlier in the afternoon then we will experience higher areal precipitation coverage.

With mid and upper level flow becoming a touch more diffulent and a jet streak nosing in from West Texas, Friday into Saturday's precipitation chances will significantly increase into the likely category. The near meridional southern expansion of Plains high pressure will push a backdoor-like front into the region late Friday or early Saturday . more of a gradual veering of winds to the northeast going into Saturday. If you factor in all of the above into a moistened near 1.8 inch pwat air mass, then it is understandable why the various model solutions introduce periods of Friday and Saturday moderate rain from shower and storm behavior. Most communities will pick up at least an inch of rain during the Thursday through Saturday time frame. While not a complete drought buster, any rain is welcome as this point as we have fallen into a minor to moderate drought (esp. across the western counties) heading into April.

Diminishing rain chances occur through the day Saturday with the highest PoPs focused closer to the coast. Sunday will be a drier and warmer day as many will reach or exceed the 80s to begin the first full week of April. Monday and Tuesday's weather is anyone's guess but early prognostication has moderate to high rain chances focused primarily over the northern half of the forecast area as upper Gulf ridging builds into Texas. Weak disturbances riding up and over the ridge axis will keep northern and western county rain probabilities at least moderate through Tuesday. Entrenched southerly flow anchoring itself down on Sunday will persist through Tuesday and, under partially cloudy skies, there should be enough sun to warm days back up into the lower to middle 80s. Couple these warm afternoon conditions with higher humidities and it will 'feel' closer to 90 than 80 with any cooling coming from a passing shower or storm. 31

MARINE .

Gusty offshore winds have conditions on the waters easily above the caution threshold, and near the small craft advisory threshold. These winds will gradually diminish into tonight, keeping seas from building excessively. In the offshore waters, near 60 nm out, a few 5 footers may be seen. Onshore flow is set to return to the bays as early as Wednesday morning, and across all of the coastal waters by Wednesday night. A wet weather pattern is forecast to set up Thursday and continue through the weekend with the greatest potential for showers and thunderstorms Friday and Saturday. 25

PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 51 76 57 76 65 / 0 0 0 60 30 Houston (IAH) 54 76 59 78 67 / 0 0 0 40 40 Galveston (GLS) 62 72 69 76 74 / 0 0 0 30 20

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGPT2 - 8770613 - Morgans Point, TX 2 mi47 min N 12 G 13 69°F 76°F1015.2 hPa
EPTT2 - 8771013 - Eagle Point, TX 13 mi47 min NNE 9.9 G 14 71°F 76°F1014.4 hPa
NCHT2 - 8770777 - Manchester, TX 14 mi53 min N 5.1 G 11 71°F 75°F1014.9 hPa
GRRT2 25 mi47 min NNE 9.9 G 19 71°F 76°F1014.2 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 26 mi53 min N 15 G 19 70°F 75°F1013.4 hPa
GTOT2 27 mi47 min 76°F
RLOT2 - 8770971 - Rollover Pass, TX 28 mi47 min NNE 14 G 16 71°F 75°F1014.9 hPa
HIST2 33 mi95 min N 8 G 12 69°F 76°F1014.2 hPa (+1.2)
LUIT2 41 mi47 min N 12 G 15 73°F 76°F1015.9 hPa
42035 - GALVESTON 22NM East of Galveston, TX 43 mi25 min N 18 G 21 71°F 73°F1014.7 hPa61°F

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX9 mi1.8 hrsNNW 910.00 miPartly Cloudy72°F51°F50%1014.6 hPa
Houston, Houston Hobby Airport, TX14 mi42 minN 1210.00 miPartly Cloudy70°F51°F51%1015.6 hPa
Houston, Pearland Regional Airport, TX16 mi42 minN 510.00 miFair72°F51°F48%1015.4 hPa

Link to 5 minute data for KEFD

Wind History from EFD (wind in knots)
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Last 24hrSE8S7S8S8S6SW6--SW6SW10SW10W10W10--NW19--NW19N11NW13
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NW9NW9--N9N7
1 day ago----NE6--------E9--E5E6E10E13SE11SE14SE16SE16SE18SE18
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2 days agoNW5N5CalmNE3N3NE3NE4NE5N5NW4N4N7NE6NE9NE12NE14E14E12NE10NE10E10E10E8E4

Tide / Current Tables for Barbours Cut, Morgans Point, Galveston Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Tue -- 01:26 AM CDT     Moonset
Tue -- 07:10 AM CDT     Sunrise
Tue -- 09:33 AM CDT     -0.14 feet Low Tide
Tue -- 11:57 AM CDT     Moonrise
Tue -- 07:38 PM CDT     Sunset
Tue -- 09:35 PM CDT     0.70 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.60.50.50.40.30.10-0.1-0.1-0.1-0.1-00.10.20.40.50.60.70.70.70.70.70.7

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (21,6,7,8)
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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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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.