Monday, June26, 2017 L-36.com


Marine Weather and Tides
Clear Lake Shores, 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 6:21AMSunset 8:25PM Monday June 26, 2017 5:16 PM CDT (22:16 UTC) Moonrise 8:09AMMoonset 9:53PM Illumination 8% 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- 334 Pm Cdt Mon Jun 26 2017
Tonight..East winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight. A chance of showers and Thunderstorms.
Tuesday..East winds 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. A chance of showers and Thunderstorms.
Tuesday night..Southeast winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight. A chance of showers and Thunderstorms.
Wednesday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Wednesday night..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Thursday..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 chance of showers and Thunderstorms.
Thursday night..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Friday..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Saturday..South winds 10 to 15 knots. Bay waters slightly choppy.
Saturday night..South 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 334 Pm Cdt Mon Jun 26 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore winds will increase late in the week as an area of low pressure moves across the central plains. Periods of showers and Thunderstorms will affect the coastal waters through Friday with a gradual decrease in activity toward the weekend.

7 Day Forecast for Marine Location Near Clear Lake Shores, TX
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location: 29.55, -95     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 262041
afdhgx
area forecast discussion
national weather service houston galveston tx
341 pm cdt Mon jun 26 2017

Short term
Showers and thunderstorms across the CWA this evening are
continuing to develop off of outflow from preexisting storms.

Lower pws in the northern counties of the cwa, with drier
conditions indicated on the low to mid level water vapor satellite
imagery, will hinder the development of showers and thunderstorms
this evening. Although with temperatures already in the upper
80s, diurnal development will still be possible as we approach
maximum temperatures late this afternoon.

Low temperatures tonight will be around normal for this time of
year, dropping down into the lower 70s further inland near college
station and upper 70s near galveston. The hrrr and rap place the
best chance of showers and thunderstorms over the coast earlier in
the evening, and eventually moving over the near and offshore
waters overnight. Rap and hrrr have been initializing fairly well
in terms of the placement of these showers, so trended the pops to
match for this evening.

At 500 mb, an area of high pressure continues to slide in from
the west as we move into Tuesday, but should recede back by
Tuesday night. An upper level low pressure system will form aloft
over SE tx Wednesday morning, and could act as a forcing mechanism
to provide some lift along with additional lift being provided by
daytime heating. Global models such as the ECMWF and GFS also
indicate widespread coverage of showers and thunderstorms
beginning Tuesday 12z-18z. Therefore, expecting a larger coverage
area for shower and thunderstorms Tuesday. Again, pws will rise
towards 1.8 inches and our convective temperatures will range
between 86 to 88 degrees. High temperatures Tuesday will rise back
into the upper 80s to lower 90s, so the convective temperature
should be easily reached. GFS also hinted at moving a swath of
higher values of vorticity into the area between 12z-18z, which
could also aid in providing additional lift.

Wednesday, shows a similar pattern with afternoon precip
expected, but global models are picking up on a small bullseye of
a little over an inch precip accumulation moving across our
offshore to nearshore waters, and eventually migrating east of our
cwa. Pops will be similar to Tuesdays with coverage more
widespread in the afternoon. High temperatures will again warm
into the upper 80s lower 90s.

Hathaway

Long term
An upper weakness over texas will be dragged towards the northwest
gulf on Wednesday by a trough swinging across the eastern us,
resulting in nearly persistent daytime rain chances across inland
areas Wednesday through Friday with activity shifting into the
gulf during the overnight hours. With precipitable water values
hovering in the 1.8-2 inch range, brief heavy rain will be
possible each day through the end of the work week.

As this upper weakness pushes farther into the gulf this weekend,
upper ridging building across southeast texas behind it will
result in drier and hotter conditions settling in across the
region with highs climbing into the low to mid 90s and heat index
values in the 100 to 105 degree range.

Huffman

Marine
Light east to southeast winds will become more south to southeast
this week and increase in speed as a series of weak low pressure
areas develop and move across the central plains. Onshore winds
will persist into next weekend with high pressure over the eastern
gulf and lower pressures over west texas.

Continued east to southeast flow this week will promote tide
levels around 1-1.5 feet above normal and occasionally strong rip
currents. However, tide levels should remain below critical
thresholds for coastal flooding issues. 43

Preliminary point temps pops
College station (cll) 72 89 71 91 74 20 50 10 40 10
houston (iah) 73 87 73 89 75 30 50 20 50 30
galveston (gls) 78 86 78 86 79 40 50 50 50 50

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... 08 14
aviation marine... 43


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EPTT2 - 8771013 - Eagle Point, TX 6 mi47 min SE 11 G 13 83°F 86°F1016 hPa
MGPT2 - 8770613 - Morgans Point, TX 9 mi47 min NE 6 G 9.9 82°F 84°F1015.8 hPa
LYBT2 15 mi47 min E 2.9 G 6 78°F 84°F1016.1 hPa
GRRT2 18 mi47 min E 9.9 G 12 84°F 86°F1016 hPa
NCHT2 - 8770777 - Manchester, TX 19 mi47 min ENE 7 G 9.9 82°F 82°F1015.1 hPa
GTOT2 20 mi47 min 83°F 84°F
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 20 mi47 min ESE 12 G 14 84°F1015.6 hPa
RLOT2 - 8770971 - Rollover Pass, TX 26 mi47 min SE 11 G 14 83°F 88°F1016.1 hPa
HIST2 32 mi47 min SE 6 G 9.9 85°F 85°F1016.3 hPa
LUIT2 33 mi47 min ENE 8 G 11 83°F
KXIH 36 mi42 min SE 11 84°F 75°F
42035 - GALVESTON 22NM East of Galveston, TX 38 mi87 min E 12 G 14 82°F 84°F2 ft1016.1 hPa (-2.0)77°F
42043 - GA-252 TABS B 40 mi137 min 12 G 14 77°F 84°F1016.2 hPa (-2.0)
FCGT2 - 8772447 - USCG Freeport, TX 45 mi47 min NNE 8.9 G 12 82°F 87°F1016.4 hPa

Wind History for Eagle Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX10 mi87 minNE 1010.00 miMostly Cloudy86°F75°F70%1016.9 hPa
Houston, Pearland Regional Airport, TX13 mi24 minE 59.00 miPartly Cloudy87°F73°F63%1016.1 hPa
Houston, Houston Hobby Airport, TX16 mi24 minENE 610.00 miMostly Cloudy85°F72°F65%1016.2 hPa
Galveston, Scholes Field, TX21 mi25 minE 810.00 miFair84°F75°F77%1016 hPa
John Dunn Helistop, TX24 mi22 minE 810.00 miMostly Cloudy82°F68°F62%1014.9 hPa

Wind History from EFD (wind in knots)
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Last 24hrE8E6E4E4E3E6--E5--------Calm--NE5E6NE6E8NE7E8NE7E9NE10E5
1 day agoE4E6NE5CalmNE5CalmCalmCalm--CalmCalmW3NW12NE5CalmN3NE5NE7NE7--N4NE6E6E9
2 days agoS10SE8S7--SE5SE4SE4CalmCalmCalmSE3SE4CalmSE3SE3SE8NW12N8CalmNW5NW7N6N5NW6

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Mon -- 06:22 AM CDT     Sunrise
Mon -- 06:38 AM CDT     -0.56 feet Low Tide
Mon -- 09:09 AM CDT     Moonrise
Mon -- 02:43 PM CDT     0.79 feet High Tide
Mon -- 08:24 PM CDT     Sunset
Mon -- 08:27 PM CDT     0.54 feet Low Tide
Mon -- 10:52 PM CDT     Moonset
Mon -- 11:31 PM CDT     0.62 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.40.2-0-0.3-0.4-0.5-0.6-0.5-0.3-00.30.50.70.80.80.80.70.60.60.50.50.60.6

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Mon -- 04:05 AM CDT     0.00 knots Slack
Mon -- 06:21 AM CDT     Sunrise
Mon -- 07:29 AM CDT     2.23 knots Max Flood
Mon -- 09:09 AM CDT     Moonrise
Mon -- 02:54 PM CDT     -0.00 knots Slack
Mon -- 08:22 PM CDT     Sunset
Mon -- 10:51 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-2.4-2.2-1.8-1-0.10.91.82.22.21.91.61.310.70.3-0-0.3-0.3-0.4-0.5-0.9-1.3-1.7-2

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 (18,4,5,8)
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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.