Monday, September25, 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 7:09AMSunset 7:14PM Sunday September 24, 2017 11:26 PM CDT (04:26 UTC) Moonrise 10:09AMMoonset 9:22PM Illumination 21% Phase: Waxing Crescent; Moon at 4 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- 1033 Pm Cdt Sun Sep 24 2017
Rest of tonight..East winds 5 to 10 knots. Bay waters smooth.
Monday..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Monday night..Southeast winds 5 to 10 knots. Bay waters smooth.
Tuesday..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Tuesday night..East winds 5 to 10 knots. Bay waters smooth.
Wednesday..Northeast winds 5 to 10 knots becoming east in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms.
Wednesday night..East winds around 5 knots. Bay waters smooth. A slight chance of showers and Thunderstorms.
Thursday..East winds 5 to 10 knots. Bay waters smooth.
Thursday night..Northeast winds 5 to 10 knots. Bay waters smooth.
Friday..Northeast winds 5 to 10 knots. Bay waters smooth.
Friday night..Northeast 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 1033 Pm Cdt Sun Sep 24 2017
Synopsis for high island to matagorda ship channel out 60 nm.. A light to moderate onshore flow with 2 to 3 foot seas should prevail into the mid-week. Isolated showers and Thunderstorms can be expected daily, especially in the pre-dawn hours. A cold front will move offshore Thursday increasing winds and building seas.

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 250158
afdhgx
area forecast discussion
national weather service houston galveston tx
858 pm cdt Sun sep 24 2017

Update
A shower or two are still lingering out there this evening but
should continue to die off over the next hour or so. A quiet
night is in store with some patchy fog expected to develop across
the northern half of the CWA by sunrise. Another round of
scattered showers and thunderstorms is expected tomorrow
afternoon.

11

Prev discussion issued 745 pm cdt Sun sep 24 2017
aviation...

lone storm near 11r should dissipate shortly.VFR conditions
through 07z then expect some patchy fog with visby falling into
ifr ranges for a few hours toward sunrise at cxo and possibly at
lbx. Scattered showers should redevelop Monday afternoon dotting
the area. Vcsh at most inland sites may need a tempo as storms
develop and get closer to iah hou cxo uts sites between 18-00z.

45
prev discussion... Issued 250 pm cdt Sun sep 24 2017
discussion...

influx of low level moisture along axes of convergence continues
to support widely scattered showers and thunderstorms this
afternoon in moderately unstable airmass. These will remain hit-
or-miss into the early evening before diminishing quickly by
sunset. We could see a few patches of fog once again tonight given
the abundant surface moisture in place.

All in all, expect very little change over the next several days
with models maintaining a chance of mostly afternoon showers and
thunderstorms into mid week. Better chances will remain nearer the
coast. We will also remain warm and humid each day with afternoon
highs topping out around 90f, with overnight lows near 80 along
the coast and in the lower 70s farther inland.

Some relief is in the forecast at least as a cool front is
forecast to backdoor into the area Friday into Saturday, dipping
temps 5-10 degrees with a more noticeable reduction in dew points
behind the front next weekend.

48
marine...

low pressure over the central plains will maintain onshore winds
through Monday. A weak area of low pressure will develop over the southern
gulf and this will allow winds to back to the east mid week. A cold
front will cross the coastal waters on Friday and winds will become ne
and increase Friday night into Saturday. Tide levels will remain slightly
elevated this week due to the persistent onshore flow. 43

Preliminary point temps pops
College station (cll) 72 90 72 90 74 10 20 10 20 30
houston (iah) 74 87 73 89 72 10 30 10 30 10
galveston (gls) 79 88 80 88 79 10 40 10 30 10

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... 11


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EPTT2 - 8771013 - Eagle Point, TX 6 mi38 min SE 9.9 G 12 82°F 85°F1012.1 hPa
MGPT2 - 8770613 - Morgans Point, TX 9 mi38 min ESE 8 G 11 82°F 84°F1012 hPa
GRRT2 18 mi38 min NNE 8 G 9.9 82°F 85°F1012 hPa
NCHT2 - 8770777 - Manchester, TX 19 mi38 min SSE 4.1 G 7 82°F 82°F1011.3 hPa
GTOT2 20 mi38 min 82°F 84°F
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 20 mi38 min SE 11 G 14
RLOT2 - 8770971 - Rollover Pass, TX 26 mi38 min SE 9.9 G 13 82°F 84°F1012.1 hPa
HIST2 32 mi38 min ESE 2.9 G 5.1 80°F 85°F1012.5 hPa
LUIT2 33 mi38 min ESE 12 G 15 82°F
KXIH 36 mi31 min
42035 - GALVESTON 22NM East of Galveston, TX 38 mi26 min ESE 12 G 14 83°F 83°F2 ft1011.6 hPa (+0.9)74°F
FCGT2 - 8772447 - USCG Freeport, TX 45 mi38 min E 8.9 G 12 82°F 83°F1011.8 hPa

Wind History for Eagle Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX10 mi96 minESE 510.00 miA Few Clouds81°F71°F74%1012.2 hPa
Houston, Pearland Regional Airport, TX13 mi33 minENE 310.00 miFair79°F72°F79%1012.3 hPa
Houston, Houston Hobby Airport, TX16 mi33 minE 310.00 miA Few Clouds81°F73°F77%1012.3 hPa
Galveston, Scholes Field, TX21 mi34 minESE 1010.00 miA Few Clouds83°F75°F77%1012 hPa
John Dunn Helistop, TX24 mi51 minNNE 510.00 miFair79°F73°F84%1011.8 hPa

Wind History from EFD (wind in knots)
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Last 24hrE4E4E2E3S2NE1CalmCalmCalmCalmSE3E9--E8E8E8E10E10E10E10E8E5SE6SE5
1 day agoCalmCalm--CalmCalmCalmCalmCalmCalmCalmCalmE7SE6--E6E11E9E10E11E7E5SE5E4Calm
2 days agoE4E4SE3CalmCalmCalmCalmCalmCalmE3SE5--E8CalmE9SE9E9SE8E9SE8SE6SE3--Calm

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Mon -- 03:40 AM CDT     0.80 feet High Tide
Mon -- 07:10 AM CDT     Sunrise
Mon -- 09:25 AM CDT     0.71 feet Low Tide
Mon -- 12:02 PM CDT     Moonrise
Mon -- 01:03 PM CDT     0.77 feet High Tide
Mon -- 07:12 PM CDT     Sunset
Mon -- 08:58 PM CDT     0.15 feet Low Tide
Mon -- 11:03 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.60.70.80.80.80.80.70.70.70.70.70.80.80.70.70.60.40.30.20.20.20.20.2

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Mon -- 02:07 AM CDT     -0.00 knots Slack
Mon -- 05:07 AM CDT     -0.31 knots Max Ebb
Mon -- 07:09 AM CDT     Sunrise
Mon -- 07:22 AM CDT     -0.23 knots Min Ebb
Mon -- 12:01 PM CDT     Moonrise
Mon -- 01:57 PM CDT     -1.62 knots Max Ebb
Mon -- 06:06 PM CDT     0.00 knots Slack
Mon -- 07:11 PM CDT     Sunset
Mon -- 09:41 PM CDT     1.56 knots Max Flood
Mon -- 11:02 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.30-0.2-0.3-0.3-0.3-0.2-0.3-0.4-0.7-1-1.3-1.5-1.6-1.5-1.2-0.7-0.10.61.21.51.61.4

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 (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.