Wednesday, January24, 2018 L-36.com


Marine Weather and Tides
Houston, TX

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:13AMSunset 5:53PM Tuesday January 23, 2018 11:36 PM CST (05:36 UTC) Moonrise 11:20AMMoonset 12:00AM Illumination 50% Phase: First Quarter Moon; Moon at 7 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 Matagorda Bay-galveston Bay- 841 Pm Cst Tue Jan 23 2018
Rest of tonight..North winds 5 to 10 knots becoming northeast 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Wednesday..Northeast winds 10 to 15 knots decreasing to 5 to 10 knots in the afternoon. Bay waters slightly choppy becoming smooth in the afternoon.
Wednesday night..Northeast winds 5 to 10 knots. Bay waters smooth.
Thursday..East winds 5 to 10 knots. Bay waters smooth.
Thursday night..East winds around 10 knots. Bay waters smooth to slightly choppy. A slight chance of showers.
Friday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. Patchy fog. A slight chance of showers.
Friday night..Southeast winds 5 to 10 knots. Bay waters smooth. Patchy fog. A chance of showers.
Saturday..East winds 5 to 10 knots. Bay waters smooth. Patchy fog. A chance of showers.
Saturday night..Northeast winds 5 to 10 knots becoming north 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight. A slight chance of showers.
Sunday..North winds 10 to 15 knots. Bay waters slightly choppy.
Sunday night..North winds 10 to 15 knots. Bay waters slightly choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 841 Pm Cst Tue Jan 23 2018
Synopsis for high island to matagorda ship channel out 60 nm.. Despite high pressure located over eastern texas, a pressure gradient with lower pressures in the carribean is tight enough to result in more moderate northeasterlies offshore routinely flirting with caution thresholds, while lighter winds exist over the bays and coastal waters. This trend should continue early this week. Onshore winds by Thursday will pull in a warmer and more humid air across cooler shelf waters. This will increase the potential for sea fog Friday and Saturday.

7 Day Forecast for Marine Location Near Houston, TX
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location: 29.74, -95.33     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 240510
afdhgx
area forecast discussion
national weather service houston galveston tx
1110 pm cst Tue jan 23 2018

Aviation
Vfr throughout, with scattered to broken cirrus present at 25k
feet. Light and generally northerly winds early will veer towards
northeasterly, and modestly pick up in speed closer to the coast
for the late morning and afternoon. Once the Sun is down, would
expect those winds to come back down some, but remain
northeasterly.

Luchs

Prev discussion issued 723 pm cst Tue jan 23 2018
near term [through tonight]...

it really does not get much more quiet around here weather wise
than tonight. High pressure over texas will allow for light calm
winds. High clouds over the area will hinder some radiational
cooling but the airmass is so dry it may not matter much
(dewpoints in the 20s that suck the moisture out of you... Air you
do not wear). Overall forecast looks on track with only some
minor adjustments for ongoing trends.

Overpeck
prev discussion issued 524 pm cst Tue jan 23 2018 ...

aviation...

vfr throughout, with main focus of the forecast being a slow
veering of generally light winds to northeasterly. Also, a band
of high cirrus is streaming across the area with some pacific
moisture, but doesn't look to be an issue below 25k feet.

Luchs

Preliminary point temps pops
College station (cll) 35 63 38 64 47 0 0 0 10 20
houston (iah) 37 63 39 63 49 0 0 0 10 20
galveston (gls) 47 58 46 58 53 0 0 0 10 20

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution through Thursday morning for
the following zones: waters from freeport to the matagorda
ship channel from 20 to 60 nm... Waters from high island to
freeport from 20 to 60 nm.

Discussion... 39
aviation marine... 25


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 4 mi49 min N 1.9 G 2.9 52°F 57°F1026 hPa
MGPT2 - 8770613 - Morgans Point, TX 19 mi49 min N 4.1 G 5.1 50°F1026.6 hPa
EPTT2 - 8771013 - Eagle Point, TX 28 mi49 min N 2.9 G 5.1 51°F 53°F1026.7 hPa
GRRT2 38 mi49 min N 4.1 G 5.1 51°F 55°F1026.8 hPa
GTOT2 41 mi49 min N 1.9 G 1.9 51°F 52°F1026.4 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 42 mi55 min NE 5.1 G 5.1 51°F1026.1 hPa
RLOT2 - 8770971 - Rollover Pass, TX 46 mi49 min N 4.1 G 5.1 52°F 55°F1026.5 hPa
LUIT2 47 mi49 min NNW 4.1 G 4.1 53°F 54°F1026.3 hPa

Wind History for Morgans Point, TX
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NW4
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G13
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S2
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SE4
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John Dunn Helistop, TX4 mi62 minNNW 810.00 miFair54°F21°F28%1026.4 hPa
Houston, Houston Hobby Airport, TX7 mi44 minNNW 410.00 miMostly Cloudy47°F28°F50%1027.1 hPa
Houston / Ellington, TX12 mi1.8 hrsNNW 310.00 miMostly Cloudy52°F28°F41%1026.7 hPa
Houston Intercontinental Airport, TX16 mi44 minNNW 410.00 miMostly Cloudy47°F28°F48%1026.9 hPa
Houston, Pearland Regional Airport, TX16 mi44 minN 010.00 miFair42°F35°F76%1027.2 hPa
Houston Southwest Airport, TX18 mi62 minN 010.00 miFair41°F32°F74%1027.1 hPa
Houston, Sugar Land Municipal / Hull Field Airport, TX19 mi44 minN 510.00 miFair44°F32°F63%1026.9 hPa

Wind History from MCJ (wind in knots)
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Last 24hrNW7NW6NW3W4W5W4W46NW9NW7N9N10N10N6
G13
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G11
N6N7N7N9N7N9
1 day agoSW97
G15
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NW10NW11NW11
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NW10NW95W5W8W5W5
2 days agoSE10
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Tide / Current Tables for Houston Ship Channel, Galveston Bay, Manchester, Texas
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Houston Ship Channel
Click for Map
Wed -- 12:01 AM CST     Moonset
Wed -- 02:03 AM CST     0.63 feet High Tide
Wed -- 07:14 AM CST     Sunrise
Wed -- 09:06 AM CST     -0.18 feet Low Tide
Wed -- 11:56 AM CST     Moonrise
Wed -- 03:42 PM CST     0.54 feet High Tide
Wed -- 04:20 PM CST     First Quarter
Wed -- 05:51 PM CST     Sunset
Wed -- 09:14 PM CST     0.25 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.60.60.60.50.30.1-0-0.1-0.2-0.1-00.10.30.40.50.50.50.40.30.30.30.30.3

Tide / Current Tables for San Jacinto Battleground State Historic Site, Texas
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San Jacinto Battleground State Historic Site
Click for Map
Wed -- 12:00 AM CST     Moonset
Wed -- 01:16 AM CST     0.45 feet High Tide
Wed -- 07:13 AM CST     Sunrise
Wed -- 08:31 AM CST     -0.32 feet Low Tide
Wed -- 11:55 AM CST     Moonrise
Wed -- 03:17 PM CST     0.29 feet High Tide
Wed -- 04:20 PM CST     First Quarter
Wed -- 05:51 PM CST     Sunset
Wed -- 08:13 PM CST     0.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.40.40.30.20-0.1-0.2-0.3-0.3-0.2-0.100.20.20.30.30.20.20.10.10.10.20.3

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Houston/Galveston, TX (0,6,7,8)
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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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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 numerious 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.