Monday, December11, 2017 L-36.com


Marine Weather and Tides
West University Place, 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 7:06AMSunset 5:24PM Monday December 11, 2017 4:33 PM CST (22:33 UTC) Moonrise 1:05AMMoonset 1:35PM Illumination 40% Phase: Third Quarter Moon; Moon at 23 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- 315 Pm Cst Mon Dec 11 2017
Tonight..Southwest winds 5 to 10 knots becoming west after midnight. Bay waters smooth.
Tuesday..North winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday night..North winds 5 to 10 knots. Bay waters smooth.
Wednesday..Northeast winds around 5 knots becoming southwest in the afternoon. Bay waters smooth.
Wednesday night..Southwest winds 5 to 10 knots. Bay waters smooth.
Thursday..West winds 5 to 10 knots. Bay waters smooth.
Thursday night..Northwest winds 10 to 15 knots. Bay waters slightly choppy.
Friday..North winds 10 to 15 knots. Bay waters slightly choppy.
Friday night..Northeast winds 5 to 10 knots becoming southeast after midnight. Bay waters smooth.
Saturday..South winds 10 to 15 knots. Bay waters slightly choppy.
Saturday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 315 Pm Cst Mon Dec 11 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Westerly winds will veer to the northwest and north toward Sunrise Tuesday with a cold frontal passage. Offshore winds will strengthen to caution levels. Winds quickly relax Wednesday as high pressure spreads over the area. A stronger cold front arrives Thursday night or early Friday with advisory conditions expected Friday.

7 Day Forecast for Marine Location Near West University Place, TX
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location: 29.72, -95.36     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 112136
afdhgx
area forecast discussion
national weather service houston galveston tx
336 pm cst Mon dec 11 2017

Near term [through tonight]
Visible satellite imagery shows some high cloud streaming across
the brazos valley into east texas this afternoon. At the surface,
west to southwest winds remain light with temperatures in the
low mid 70s. With dewpoints in the low 30s, relative humidity
levels are quite low from the upper teens to upper 20 percent.

Certainly a nice day to be outside and enjoy for december.

Tonight a cold front located over the southern plains at 21z
should push through the area after midnight and off the coast by
12-13z Tuesday. Overall the front will be relatively unnoticed
with winds turning northerly with re-enforcing cooler drier air.

Short term [Tuesday through Wednesday night]
High pressure will settle over the area Tuesday and move east
Tuesday night. By Wednesday some weak southwest boundary layer
flow develops ahead of another approaching front over the plains.

Forecast looks on track for this time periods with temperatures
close to near normal or maybe a couple degrees below for minimum
temperatures.

Long term [Thursday through Monday]
Upper level pattern remains progressive through the end of the
week with northwest flow aloft through the plains. A strong trough
moves through the area on Friday with a weak cold front pushing
through during this time. Return flow from the gulf does set up
Saturday into Sunday with the GFS developing quite a bit of
precipitation along a front for Sunday. The ECMWF cmc are both
dry with the front and so the forecast will go with some 20 pops
during this time frame leaning more on the ECMWF cmc solutions
than the gfs. GFS wants to increase precipitable water values up
to 1.7 to 1.8 inches by Sunday. This seems really aggressive
given only 24 hours of return flow and the flow is more from the
southwest coming from south texas, hardly a source of moisture.

Ecmwf cmc do produce some shower activity but most of it will be
to the east and southeast of the area. High pressure then builds
over texas early next week behind the front and on the back side
of a departing trough.

Overpeck

Aviation [18z TAF issuance]
Vfr. Westerly winds today may briefly back to the southwest ahead
of the cold front. Cold front with increasing northerly winds coming
through 06z cll area and iah hou 09-10z and gls by 11-12z.

45

Marine
Scec conditions developing toward morning and continuing
throughout the day Tuesday over the gulf waters in the wake of the
early morning cold front. Winds relax Tuesday night early
Wednesday as high pressure slides into and through the upper texas
coastal waters by Wednesday night. Another cold front on it's
heels and should move off the coast Thursday evening and scec to
sca conditions in the wake of the front. Thursday night tailing
off by Friday night. Strengthening onshore flow as next system
drops into the eastern u.S. Trough with increasing chances for
showers Saturday into Sunday. At this the third front in this
point next front should package hits the waters Sunday night.

45

Preliminary point temps pops
College station (cll) 41 62 35 64 42 0 0 0 0 10
houston (iah) 44 63 37 62 44 0 0 0 0 10
galveston (gls) 52 63 46 60 53 0 0 0 0 10

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution from late tonight through
Tuesday evening 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.

Near term... Overpeck
short term... Overpeck
long term... Overpeck
aviation... 45
marine... 45
fire weather... 45


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 5 mi46 min WSW 4.1 G 7 72°F 59°F1021.2 hPa
MGPT2 - 8770613 - Morgans Point, TX 20 mi46 min SSE 4.1 G 6 67°F 1021.8 hPa
EPTT2 - 8771013 - Eagle Point, TX 29 mi46 min SW 8.9 G 12 1022.2 hPa
GRRT2 38 mi46 min 61°F 53°F1022.6 hPa
GTOT2 41 mi46 min SW 7 G 9.9 65°F 56°F1021.5 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 42 mi46 min SSW 12 G 15 1021.9 hPa
LUIT2 46 mi94 min 54°F
RLOT2 - 8770971 - Rollover Pass, TX 47 mi46 min SW 7 G 11 63°F 55°F1022.3 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John Dunn Helistop, TX2 mi39 minVar 410.00 miFair75°F23°F14%1021.7 hPa
Houston, Houston Hobby Airport, TX6 mi41 minWSW 1010.00 miPartly Cloudy72°F24°F17%1022.4 hPa
Houston / Ellington, TX12 mi44 minSW 910.00 miPartly Cloudy72°F30°F22%1022.3 hPa
Houston, Pearland Regional Airport, TX15 mi41 minSW 810.00 miFair72°F27°F19%1022.3 hPa
Houston Southwest Airport, TX16 mi39 minW 510.00 miFair72°F32°F24%1022.3 hPa
Houston Intercontinental Airport, TX17 mi41 minWSW 910.00 miPartly Cloudy74°F25°F16%1021.8 hPa
Houston, Sugar Land Municipal / Hull Field Airport, TX17 mi41 minSW 710.00 miFair73°F34°F24%1022.2 hPa

Wind History from MCJ (wind in knots)
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Last 24hr4W4
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CalmCalmCalmCalmCalm4CalmSW11
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W10W4CalmCalmW5W644
1 day agoW7
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NW5NW4W5Calm----NW7--N9N8N7CalmN5CalmCalmCalmCalmCalmCalmCalmCalm3Calm
2 days ago6
G11
NW44W4W6--W4CalmCalmCalmCalmCalm3CalmCalmCalmCalmCalm--------Calm6

Tide / Current Tables for Houston Ship Channel, Galveston Bay, Manchester, Texas
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Houston Ship Channel
Click for Map
Mon -- 01:04 AM CST     Moonrise
Mon -- 04:15 AM CST     1.11 feet High Tide
Mon -- 07:06 AM CST     Sunrise
Mon -- 11:02 AM CST     0.33 feet Low Tide
Mon -- 01:33 PM CST     Moonset
Mon -- 04:44 PM CST     0.82 feet High Tide
Mon -- 05:22 PM CST     Sunset
Mon -- 10:39 PM CST     0.40 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.70.911.11.110.90.70.50.40.30.40.50.60.70.80.80.80.70.60.50.40.4

Tide / Current Tables for Lynchburg Landing, San Jacinto River, Texas
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Lynchburg Landing
Click for Map
Mon -- 01:03 AM CST     Moonrise
Mon -- 03:26 AM CST     1.15 feet High Tide
Mon -- 07:05 AM CST     Sunrise
Mon -- 11:11 AM CST     0.48 feet Low Tide
Mon -- 01:33 PM CST     Moonset
Mon -- 05:21 PM CST     Sunset
Mon -- 06:40 PM CST     0.82 feet High Tide
Mon -- 09:45 PM CST     0.79 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.911.11.11.11.110.90.80.60.50.50.50.60.60.70.80.80.80.80.80.80.80.8

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 (17,4,5,8)
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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.