Monday, April23, 2018 L-36.com


Marine Weather and Tides
Houston, TX

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:44AMSunset 7:55PM Monday April 23, 2018 9:59 PM CDT (02:59 UTC) Moonrise 12:45PMMoonset 1:42AM Illumination 63% Phase: Waxing Gibbous; Moon at 9 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- 331 Pm Cdt Mon Apr 23 2018
Tonight..West winds 5 to 10 knots becoming northwest after midnight. Bay waters smooth.
Tuesday..North winds 5 to 10 knots becoming southeast in the afternoon. Bay waters smooth.
Tuesday night..South winds 5 to 10 knots becoming west after midnight. Bay waters smooth.
Wednesday..East winds 5 to 10 knots becoming southeast in the afternoon. Bay waters smooth.
Wednesday night..South winds 5 to 10 knots becoming northwest 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight. A chance of showers and Thunderstorms.
Thursday..North winds 10 to 15 knots decreasing to 5 to 10 knots in the afternoon. Bay waters slightly choppy becoming smooth in the afternoon. A slight chance of showers and Thunderstorms.
Thursday night..East winds 5 to 10 knots becoming northeast after midnight. Bay waters smooth.
Friday..North winds 5 to 10 knots. Bay waters smooth.
Friday night..North winds 5 to 10 knots becoming northeast 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Saturday..Northeast winds around 10 knots becoming east in the afternoon. Bay waters smooth to slightly choppy.
Saturday night..Southeast 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 331 Pm Cdt Mon Apr 23 2018
Synopsis for high island to matagorda ship channel out 60 nm.. Light offshore winds should persist through Tuesday. A brief period of onshore winds will return Tuesday night until becoming offshore again Wednesday night in the wake of another weak front.

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 240239
afdhgx
area forecast discussion
national weather service houston galveston tx
939 pm cdt Mon apr 23 2018

Discussion
No changes planned at this time. Going forecast appears to be on
track. 41

Prev discussion issued 403 pm cdt Mon apr 23 2018
a nice and quiet day with cumulus forming along the backside of a
slowly churning upper low just west of appalachia. Northwest
winds and mainly clear skies will prevail through Tuesday as lower
level high pressure moves across the central u.S.. Increasing
cloudiness with winds becoming more variable on Wednesday as the
region falls just downstream of an approaching shortwave trough
moving southeast out of the central rockies. Low end to (low end)
moderate pops associated with the surface boundary passage during
the late Wednesday evening through early Thursday morning hours.

The main question marks will be with moisture return and upper
level forcing (or lack thereof). With Wednesday's brief onshore
flow and mid-level westerly steering winds pulling in a more humid
south central texas air mass... There will not be enough time to
fully saturate the column by the early Thursday morning frontal
passage. Jet dynamics are not there as models indicate no low
level jet and a fairly zonal westerly flow pattern at 250-300 mb.

Any precipitation that forms appears to be along or just ahead of
the front itself. Ample lapse rates exist for any forced parcel
within the frontal zone to continue on an unimpeded upward trek.

Hence the relatively lower chances for mainly evening showers with
isolated storms and early Thursday scattered showers with
embedded thunder that will be focused over the northern 2 3rds of
the cwa.

Transitory ridging moving across the southern plains in the wake
of Thursday's mid atlantic upper troughing will equate to fair
weather leading into the weekend. Clearing skies and dry conditions
to end the week. Possibly some minor cooling Thursday as tmaxs
struggle to reach the upper 70s but, by Friday, subsequent days
will again warm into the lower 80s nights cooling into the middle
50s. Onshore winds and moisture return on Sunday with minor pops
painted out west to account for a possible weak disturbance passage
or two going into early next week. 31

Preliminary point temps pops
College station (cll) 56 83 59 80 54 0 0 0 20 40
houston (iah) 56 84 61 82 58 0 0 0 10 40
galveston (gls) 64 77 67 75 64 0 0 0 10 30

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 4 mi41 min NNW 1.9 G 1.9 73°F 71°F1015.5 hPa
MGPT2 - 8770613 - Morgans Point, TX 19 mi41 min NW 1 G 2.9 71°F 71°F1016.1 hPa
EPTT2 - 8771013 - Eagle Point, TX 28 mi41 min NNW 1.9 G 4.1 71°F 72°F1015.9 hPa
GRRT2 38 mi41 min NW 4.1 G 5.1 71°F 73°F1015.7 hPa
GTOT2 41 mi41 min W 4.1 G 6 73°F 72°F1015.8 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 42 mi47 min NNW 4.1 G 5.1 72°F 71°F1015.5 hPa
RLOT2 - 8770971 - Rollover Pass, TX 46 mi41 min NW 5.1 G 6 73°F 71°F1016 hPa
LUIT2 47 mi41 min SW 8 G 11 70°F 1015.9 hPa

Wind History for Morgans Point, TX
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Last
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NW10
G13
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G15
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SE12
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E11
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John Dunn Helistop, TX4 mi64 minVar 510.00 miFair73°F48°F41%1015.6 hPa
Houston, Houston Hobby Airport, TX7 mi66 minNNW 410.00 miFair73°F50°F44%1016.1 hPa
Houston / Ellington, TX12 mi2.2 hrsWNW 610.00 miFair75°F50°F41%1015.2 hPa
Houston Intercontinental Airport, TX16 mi66 minNW 310.00 miA Few Clouds71°F54°F55%1015.8 hPa
Houston, Pearland Regional Airport, TX16 mi66 minN 010.00 miFair67°F54°F63%1016.1 hPa
Houston Southwest Airport, TX18 mi84 minN 010.00 miFair64°F55°F76%1015.9 hPa
Houston, Sugar Land Municipal / Hull Field Airport, TX19 mi66 minN 410.00 miFair65°F57°F76%1015.7 hPa

Wind History from MCJ (wind in knots)
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Last 24hrNW10NW9N9N7N6N6N7NW4W8W5W55W6W7
G14
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G15
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G14
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G19
W10
G16
NW9
G16
NW9NW9NW104
G11
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1 day agoSE9W11
G17
6NW4W4CalmNW11
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2 days agoE7E5
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G14
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G16

Tide / Current Tables for Houston Ship Channel, Galveston Bay, Manchester, Texas
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Houston Ship Channel
Click for Map
Mon -- 02:40 AM CDT     Moonset
Mon -- 06:46 AM CDT     Sunrise
Mon -- 10:25 AM CDT     0.48 feet Low Tide
Mon -- 01:45 PM CDT     Moonrise
Mon -- 06:58 PM CDT     2.02 feet High Tide
Mon -- 07:52 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.61.61.51.41.31.10.90.70.60.50.50.60.81.11.41.71.92221.91.81.7

Tide / Current Tables for San Jacinto Battleground State Historic Site, Texas
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San Jacinto Battleground State Historic Site
Click for Map
Mon -- 02:40 AM CDT     Moonset
Mon -- 06:45 AM CDT     Sunrise
Mon -- 10:13 AM CDT     0.15 feet Low Tide
Mon -- 01:44 PM CDT     Moonrise
Mon -- 07:30 PM CDT     1.59 feet High Tide
Mon -- 07:52 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.21.110.90.80.60.50.30.20.20.20.30.50.711.21.41.51.61.61.51.41.3

Weather Map and Satellite Images
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wmap_A
GOES 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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (22,6,7,8)
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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.