Monday, March27, 2017 L-36.com


Marine Weather and Tides
Bacliff, TX

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:12AMSunset 7:37PM Monday March 27, 2017 5:39 AM CDT (10:39 UTC) Moonrise 6:05AMMoonset 6:23PM Illumination 0% Phase: New Moon; Moon at 29 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- 355 Am Cdt Mon Mar 27 2017
Today..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Tonight..South winds 5 to 10 knots. Bay waters smooth.
Tuesday..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday night..Southeast winds 15 to 20 knots. Bay waters choppy.
Wednesday..Southeast winds 15 to 20 knots. Bay waters choppy. Showers and Thunderstorms likely.
Wednesday night..South winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. Bay waters choppy becoming slightly choppy after midnight. A chance of showers and Thunderstorms.
Thursday..West winds 10 to 15 knots becoming around 10 knots in the afternoon. Bay waters slightly choppy becoming smooth to slightly choppy in the afternoon. A chance of showers and Thunderstorms.
Thursday night..Northwest winds 5 to 10 knots becoming northeast after midnight. Bay waters smooth.
Friday..Southeast winds 5 to 10 knots. Bay waters smooth.
Friday night..Southeast 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 355 Am Cdt Mon Mar 27 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate onshore winds will gradually strengthen by Wednesday as another storm system moves into the southern plains. Small craft advisories will be likely required on Wednesday as seas build. A weak cold front should move through the upper texas coastal waters early on Thursday.

7 Day Forecast for Marine Location Near Bacliff, TX
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location: 29.53, -94.98     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 270916
afdhgx
area forecast discussion
national weather service houston/galveston tx
416 am cdt Mon mar 27 2017

Discussion
Some strong storms moved through brazos county overnight with
some large hail reported but the radar is looking more benign at
the current time. At the surface, a weak area of low pressure over
central ok will move NE and drag a cold front into central texas
later today. The front will likely stall west of the CWA by mid
afternoon. At 850 mb, a trough of low pressure extended from
southern ks into west central texas. At 300 mb, a weak upper
level disturbance was noted over the western high plains with a
splitting jet over NE tx. The trough at 850 mb will move east
today and the tail end of the feature will linger over e-se tx
this afternoon. Although fcst soundings not showing a lot of
moisture, have some concerns that the trough coupled with daytime
heating could trigger a few showers and thunderstorms this
afternoon. Fcst soundings show a weak cap this morning eroding by
late aftn and convective temps between 83-85 degrees. Will
maintain lowish pops for mainly this afternoon.

Tuesday will be relatively tranquil. Convective temps warm into
the upper 80s and fcst soundings show a dry moisture profile with
multiple capping layers. It all GOES down hill late Tuesday night
into Wednesday.

Pw values increase rapidly early Wednesday and should range
between 1.70 and 1.90 inches by Wed aftn. A deep upper low will
move toward the texas panhandle with the upper flow showing a nice
split over east texas. Fcst soundings show CAPE values between
1500-2500 j/kg, LI values around -8, steep lapse rates and
helicity values around 115 m2/s2 over the south and over 300 m2/s2
over the north. It should be fairly active with severe storms
possible. SPC has outlooked all of SE tx for Wednesday and all
hazards look possible. Fcst soundings also show saturated moisture
profile so even though the system will be moving and storm motion
looks quick, some spots will get some locally heavy rain. The
upper level system will move slowly east Wed night/Thursday but a
disturbance rotating around the upper low will probably produce
additional rain late Wed night into early Thursday before drying
commences later in the day. Quiet weather and mild to warm temps
expected Thursday aftn through Saturday as weak high pressure
settles over the southern plains.

Another upper low will move into the texas panhandle over the
weekend and sfc low pressure will develop over south texas.

Moisture level increase to between 1.70 and 2.00 inches late
Saturday through Saturday night. Favorable jet dynamics coupled
with the higher moisture will once again lead to high rain chances
next weekend. Some disagreement between the GFS and the ECMWF on
how quickly next weekends system will exit the region so have
split the timing differences and will carry pops through Monday.

43

Marine
Onshore winds will weaken a bit today before strengthening tonight
and Tuesday. Advisory conditions are expected to develop at least
over the gulf waters on Wednesday as a storm system moves across the
state. A frontal boundary will then move off of the coast by early
Thursday.

40

Preliminary point temps/pops
College station (cll) 84 67 85 68 79 / 10 10 10 20 80
houston (iah) 84 69 85 71 82 / 30 10 10 10 80
galveston (gls) 82 72 81 74 80 / 20 10 10 10 60

Hgx watches/warnings/advisories
Tx... None.

Gm... Small craft should exercise caution until 4 am cdt early this
morning for the following zones: 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
EPTT2 - 8771013 - Eagle Point, TX 5 mi51 min S 11 G 14 73°F 75°F1011.1 hPa
MGPT2 - 8770613 - Morgans Point, TX 11 mi51 min S 8 G 12 74°F 75°F1011.4 hPa
GRRT2 16 mi51 min S 8.9 G 12 72°F 76°F1011 hPa
LYBT2 17 mi51 min SSE 11 G 14 73°F 73°F1010.3 hPa
GTOT2 18 mi51 min 72°F 72°F
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 18 mi51 min SSE 11 G 12 72°F
NCHT2 - 8770777 - Manchester, TX 20 mi51 min S 5.1 G 8 73°F 74°F1011 hPa
LUIT2 32 mi51 min SSE 8 G 11 73°F
HIST2 32 mi51 min S 7 G 9.9 71°F 75°F1011.5 hPa
KXIH 34 mi44 min SSW 13 73°F 70°F
42035 - GALVESTON 22NM East of Galveston, TX 36 mi49 min SSE 12 G 14 72°F 72°F3 ft1011.3 hPa (-1.2)71°F
FCGT2 - 8772447 - USCG Freeport, TX 44 mi51 min SE 11 G 13 73°F 72°F1010.9 hPa

Wind History for Eagle Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX12 mi3.8 hrsSSE 510.00 miMostly Cloudy72°F68°F88%1013.2 hPa
Houston, Pearland Regional Airport, TX14 mi46 minS 67.00 miOvercast75°F70°F84%1011.2 hPa
Houston, Houston Hobby Airport, TX18 mi46 minSSE 79.00 miMostly Cloudy72°F69°F91%1011.2 hPa
Galveston, Scholes Field, TX19 mi47 minSSE 97.00 miOvercast73°F72°F96%1011.2 hPa

Wind History from EFD (wind in knots)
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Last 24hrCalmCalmCalmCalmS9--S14S14SE10SE13S15S13S11S11S10SE9S9S7----S5----SE5
1 day agoS8S9SW7SW9NW7NW10NW6--W6W6W6W9W4CalmSW4SE4CalmS4S4S5CalmCalm--Calm
2 days agoSE10SE10SE11SE8SE14
G19
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SW8S10S7S9S9S10

Tide / Current Tables for Eagle Point, Texas
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Eagle Point
Click for Map
Mon -- 02:12 AM CDT     0.42 feet Low Tide
Mon -- 07:04 AM CDT     Moonrise
Mon -- 07:14 AM CDT     Sunrise
Mon -- 08:00 AM CDT     0.94 feet High Tide
Mon -- 02:45 PM CDT     0.16 feet Low Tide
Mon -- 07:22 PM CDT     Moonset
Mon -- 07:35 PM CDT     Sunset
Mon -- 08:52 PM CDT     0.84 feet High Tide
Mon -- 09:59 PM CDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.50.40.40.50.60.80.90.90.90.80.60.40.30.20.20.20.40.50.70.80.80.80.7

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Mon -- 02:28 AM CDT     0.00 knots Slack
Mon -- 04:31 AM CDT     0.62 knots Max Flood
Mon -- 06:39 AM CDT     -0.00 knots Slack
Mon -- 07:03 AM CDT     Moonrise
Mon -- 07:14 AM CDT     Sunrise
Mon -- 10:53 AM CDT     -1.30 knots Max Ebb
Mon -- 02:31 PM CDT     0.00 knots Slack
Mon -- 05:06 PM CDT     1.17 knots Max Flood
Mon -- 07:22 PM CDT     Moonset
Mon -- 07:34 PM CDT     Sunset
Mon -- 08:12 PM CDT     -0.00 knots Slack
Mon -- 09:59 PM CDT     New Moon
Mon -- 11:49 PM CDT     -0.94 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-0.5-0.20.20.60.60.3-0.2-0.7-1-1.2-1.3-1.2-0.9-0.30.30.91.210.60.1-0.4-0.7-0.9

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 (6,6,7,8)
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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.