Monday, October23, 2017 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 7:28AMSunset 6:43PM Monday October 23, 2017 1:11 AM CDT (06:11 UTC) Moonrise 9:48AMMoonset 8:41PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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- 1018 Pm Cdt Sun Oct 22 2017
Tonight..North winds around 15 knots. Bay waters slightly choppy to choppy.
Monday..North winds 10 to 15 knots decreasing to 5 to 10 knots in the afternoon. Bay waters slightly choppy becoming smooth in the afternoon.
Monday night..North winds 5 to 10 knots increasing to 15 to 20 knots after midnight. Bay waters smooth becoming choppy after midnight.
Tuesday..North winds 15 to 20 knots. Bay waters choppy.
Tuesday night..North winds 15 to 20 knots. Bay waters choppy.
Wednesday..North winds 10 to 15 knots becoming northwest 5 to 10 knots in the afternoon. Bay waters slightly choppy becoming smooth in the afternoon.
Wednesday night..West winds 5 to 10 knots becoming southwest after midnight. Bay waters smooth.
Thursday..South winds 10 to 15 knots. Bay waters slightly choppy.
Thursday night..South winds 15 to 20 knots. Bay waters choppy.
Friday..Southwest winds 10 to 15 knots becoming northwest in the afternoon. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Friday night..North winds 15 to 20 knots becoming 15 to 25 knots after midnight. Bay waters 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 1018 Pm Cdt Sun Oct 22 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate offshore wind is expected overnight. Another cold front will move off of the coast on Tuesday with winds restrengthening behind this front Tuesday night and Wednesday. Diminishing winds are then expected as high pressure builds overhead. Onshore flow will resume Thursday as the high pressure moves east of the area. Another cold front should arrive Saturday with a chance of showers and Thunderstorms.

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 230432
afdhgx
area forecast discussion
national weather service houston galveston tx
1132 pm cdt Sun oct 22 2017

Aviation
Vfr. 47

Prev discussion issued 930 pm cdt Sun oct 22 2017
with this morning's cold front a distant memory as it crosses the
central gulf this evening... Lowering dew points under weak winds
and clear skies will create an unseasonably cool early Monday
morning. Certainly a jacket morning for all of those early risers
as clear skies and near calm winds aid in having ambient
temperatures cool closer to 40 degree interior dew points. Inland
minimum temperatures will be around 8 to 12 degrees below normal
while near coastal readings will be within a few degrees of normal
(low to mid 60s). A beautiful sunny day tomorrow as afternoon
temperatures warm into the very do-able upper 70s to lower 80s
under 20-30% relative humidities. A secondary shot of colder air
Tuesday will regulate afternoon warmth to the lower to middle 70s
followed by a very crisp early Wednesday morning in the areawide
(inland) 40s upper 50s (coast). The next chance of rain looks to
be at the end of the week in association with the next cold
frontal passage. 31

Preliminary point temps pops
College station (cll) 49 80 53 75 46 0 0 0 0 0
houston (iah) 55 79 55 76 49 0 0 0 0 0
galveston (gls) 64 79 63 77 59 0 0 0 0 0

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution until 5 am cdt Monday for
the following zones: galveston bay... Matagorda bay.

Small craft advisory until 11 am cdt Monday for the following
zones: coastal waters from freeport to the matagorda ship
channel out 20 nm... Coastal waters from high island to
freeport out 20 nm... Waters from freeport to the matagorda
ship channel from 20 to 60 nm... Waters from high island to
freeport from 20 to 60 nm.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 4 mi42 min NNW 1.9 G 2.9 63°F 76°F1019.7 hPa
MGPT2 - 8770613 - Morgans Point, TX 19 mi42 min N 6 G 8.9 65°F 76°F1020.2 hPa
EPTT2 - 8771013 - Eagle Point, TX 28 mi42 min NNE 8.9 G 14 67°F 75°F1020.2 hPa
GRRT2 38 mi42 min WSW 11 G 14 67°F 74°F1020.2 hPa
GTOT2 41 mi42 min 69°F 76°F
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 42 mi42 min N 16 G 19 76°F1019.5 hPa
RLOT2 - 8770971 - Rollover Pass, TX 46 mi42 min N 12 G 17 65°F 73°F1019.9 hPa
LUIT2 47 mi42 min NNW 9.9 G 12 68°F 1020 hPa

Wind History for Morgans Point, TX
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SE3
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G30
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NE9
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John Dunn Helistop, TX4 mi17 minNNW 910.00 miFair64°F50°F60%1020.3 hPa
Houston, Houston Hobby Airport, TX7 mi19 minN 610.00 miFair62°F52°F70%1020.9 hPa
Houston / Ellington, TX12 mi22 minN 010.00 miFair63°F53°F73%1020.7 hPa
Houston Intercontinental Airport, TX16 mi19 minNW 510.00 miFair61°F52°F72%1020.6 hPa
Houston, Pearland Regional Airport, TX16 mi19 minNNW 410.00 miFair62°F54°F75%1020.7 hPa
Houston Southwest Airport, TX18 mi17 minNNW 410.00 miFair58°F53°F85%1021 hPa
Houston, Sugar Land Municipal / Hull Field Airport, TX19 mi19 minNW 410.00 miFair58°F54°F87%1020.8 hPa

Wind History from MCJ (wind in knots)
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Last 24hrSE9CalmS4CalmCalmCalmCalmN12
G30
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NE12
G21
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G20
E9N6N9N17NW9
G15
N9NW8CalmCalmCalmNW9
G16
N8N8
1 day agoE6SE7SE8S9SE5CalmSE63CalmSE10
G15
SE7
G13
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SE11
G18
SE14SE12SE12
G21
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2 days agoNE8NE7NE9NE6SE8NE12
G20
E9CalmNE8E16E11E15E12E12
G19
E7
G13
E13E13
G18
E11E14E10SE8E7E4Calm

Tide / Current Tables for Houston Ship Channel, Galveston Bay, Manchester, Texas
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Houston Ship Channel
Click for Map
Mon -- 01:43 AM CDT     1.76 feet High Tide
Mon -- 07:28 AM CDT     Sunrise
Mon -- 08:02 AM CDT     1.49 feet Low Tide
Mon -- 09:25 AM CDT     1.50 feet High Tide
Mon -- 10:47 AM CDT     Moonrise
Mon -- 06:06 PM CDT     0.45 feet Low Tide
Mon -- 06:41 PM CDT     Sunset
Mon -- 09:40 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.71.81.71.71.61.61.51.51.51.51.41.31.210.80.60.50.40.50.60.81.11.3

Tide / Current Tables for San Jacinto Battleground State Historic Site, Texas
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San Jacinto Battleground State Historic Site
Click for Map
Mon -- 01:30 AM CDT     1.78 feet High Tide
Mon -- 07:27 AM CDT     Sunrise
Mon -- 10:46 AM CDT     Moonrise
Mon -- 05:48 PM CDT     0.45 feet Low Tide
Mon -- 06:41 PM CDT     Sunset
Mon -- 09:40 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.81.81.71.71.61.51.51.51.51.51.41.31.10.90.70.60.50.50.50.70.91.11.4

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 (2,6,7,8)
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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.