Monday, March25, 2019 L-36.com


Marine Weather and Tides
Seabrook, TX

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:16AMSunset 7:35PM Monday March 25, 2019 4:49 PM CDT (21:49 UTC) Moonrise 11:40PMMoonset 9:43AM Illumination 76% Phase: Waning Gibbous; Moon at 20 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- 354 Pm Cdt Mon Mar 25 2019
Tonight..North winds 5 to 10 knots becoming northeast 10 to 20 knots after midnight. Bay waters smooth becoming slightly choppy after midnight. A slight chance of showers and Thunderstorms early in the evening. Patchy fog.
Tuesday..Northeast winds 10 to 15 knots decreasing to 5 to 10 knots in the afternoon. Bay waters slightly choppy becoming smooth in the afternoon.
Tuesday night..East winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Wednesday..East winds 10 to 15 knots becoming southeast 5 to 10 knots in the afternoon. Bay waters slightly choppy becoming smooth in the afternoon.
Wednesday night..Southeast winds 5 to 10 knots. Bay waters smooth.
Thursday..Southeast winds around 10 knots. Bay waters smooth to slightly choppy.
Thursday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Friday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Saturday..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Saturday night..North winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Bay waters slightly choppy becoming choppy after midnight. A chance of showers and Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 354 Pm Cdt Mon Mar 25 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Light onshore flow will eventually turn more out of the west and then out of the north behind the passage of this cold front. Patchy fog will again be possible across portions of the nearshore waters and bays this evening, until drier air filters in behind the cold front. Gusty winds will be possible along and behind the boundary for a few hours. Expecting to see improved visibilities shortly after midnight and into the early morning hours Tuesday as the cold front clears the coastal waters. Scec conditions are likely Tuesday morning into the afternoon. Onshore winds returns Wednesday and persists through Saturday.


7 Day Forecast for Marine Location Near Seabrook, TX
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location: 29.61, -94.98     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 252059
afdhgx
area forecast discussion
national weather service houston galveston tx
359 pm cdt Mon mar 25 2019

Short term
Latest visible satellite imagery shows frontal boundary
stretching across SE texas just north of the houston area about to
enter harris county. Strongest storms are confined to extreme
east texas with a few isolated storm back towards liberty. More
robust line of cumulus stretches back to SE montgomery co and
should reach NE harris county the next couple hours. Forecast will
keep some rain chances along the front as it pushes south tonight
into tomorrow morning. Rain chances should be off the coast after
10pm to 1am tonight. Main threats from any isolated storms will
be lightning and gusty winds. Stronger storm if it forms could
produce hail but think SPC marginal risk highlights the small
threat for a severe storm with more of a threat over louisiana.

Cold front is pushing south tonight with it reaching the coast
around midnight and drier cooler air filtering into the are
Tuesday morning. Tomorrow may not necessarily be cooler with high
temperatures back into the mid upper 70s but it will feel drier
with afternoon rh down to 30 to 40 percent and light NE winds.

Long term
Main concern in the long term will be chances of thunderstorms
starting Friday through the weekend. One upper level trough
develops over the western u.S. And has a vorticity maximum split
of moving across the rockies quickly by Saturday morning. Second
trough now lags back and pushes across the plains next
Sunday Monday. Warm advection should bring back enough moisture
with the first approaching system to need rain chances Friday
morning. Better chances look to be Saturday as a cold front slides
into the area and then maybe again overnight Saturday into
Sunday. All of this hinges on the timing of the second trough. Gfs
is more aggressive with rain chances while ECMWF and canadian are
drier. It does look all of this should clear out Monday more in
line with the ecmwf. Still too soon to highlight any potential
weather threats, but there will at least be a chance for
thunderstorms Saturday and maybe Saturday night as convection
becomes elevated over top the front.

Overpeck

Marine
A cold front remains draped over SE tx this afternoon, and is
continuing to sag southward. Along this boundary, showers and
isolated thunderstorms will be possible. Light onshore flow will
eventually turn more out of the west and then out of the north
behind the passage of this cold front. Patchy fog will again be
possible across portions of the nearshore waters and bays this
evening, until drier air filters in behind the cold front.

Expecting to see improved visibilities shortly after midnight and
into the early morning hours Tuesday as the cold front clears the
coastal waters. Scec conditions are likely Tuesday morning into
the afternoon hours across the gulf waters, and as a result, seas
will rise to between 2 to 4 feet. East flow will prevail by
Wednesday, and eventually turn out of the southeast by Thursday
morning as onshore flow returns. At this time, another cold front
is anticipated to push through SE tx Saturday afternoon into
Sunday, with winds and seas expected to increase behind the front.

Additionally, tides will run around normal through the majority
of the week and start to run slightly above normal by about a half
foot to a foot towards the end of the week.

Hathaway

Preliminary point temps pops
College station (cll) 53 75 51 74 52 0 0 0 0 0
houston (iah) 54 76 52 74 53 0 0 0 0 0
galveston (gls) 60 71 59 68 60 20 0 0 0 0

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... Overpeck
aviation marine... Hathaway


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGPT2 - 8770613 - Morgans Point, TX 5 mi50 min 75°F 68°F1017.5 hPa (-2.0)
EPTT2 - 8771013 - Eagle Point, TX 10 mi56 min 72°F 70°F1017.9 hPa
NCHT2 - 8770777 - Manchester, TX 17 mi50 min 82°F 69°F1016.8 hPa (-2.3)
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 22 mi56 min 87°F 67°F1017.8 hPa
GRRT2 22 mi50 min 72°F 72°F1018.3 hPa (-1.6)
GTOT2 23 mi50 min 73°F 65°F1017.9 hPa (-1.6)
RLOT2 - 8770971 - Rollover Pass, TX 26 mi50 min 74°F 70°F1018 hPa (-2.0)
HIST2 31 mi56 min 76°F 69°F1017.3 hPa
LUIT2 38 mi50 min 72°F 1018 hPa (-2.0)
42035 - GALVESTON 22NM East of Galveston, TX 40 mi40 min S 7.8 G 7.8 69°F 65°F1018.9 hPa
FCGT2 - 8772447 - USCG Freeport, TX 49 mi50 min 69°F 67°F1018.7 hPa (-1.9)
FPST2 49 mi50 min 69°F 67°F1017.8 hPa (-2.1)

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX10 mi2 hrsWSW 510.00 miMostly Cloudy82°F66°F58%1018.3 hPa
Houston, Pearland Regional Airport, TX15 mi57 minNNW 510.00 miA Few Clouds82°F64°F56%1018 hPa
Houston, Houston Hobby Airport, TX16 mi57 minNW 410.00 miMostly Cloudy82°F64°F55%1017.7 hPa
John Dunn Helistop, TX23 mi55 minVar 49.00 miPartly Cloudy84°F62°F48%1017.3 hPa
Galveston, Scholes Field, TX24 mi58 minS 910.00 miA Few Clouds74°F68°F82%1018.4 hPa

Wind History from EFD (wind in knots)
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Last 24hrSE11S12S12S10S8S6S6S5S4S4S3S6S5SW6SW6SW4CalmCalmW5W8W8W8SW5SW3
1 day agoSE12SE13SE12SE7SE7SE7SE5SE2E4SE3CalmCalmE2E2SE2E2SE6SE6S10S10--S12S11S11
2 days agoSE2----SE5SE5S5--S3S4CalmS3CalmCalm--CalmCalmSE4E6--SE10S12SE11SE10SE13

Tide / Current Tables for Barbours Cut, Morgans Point, Galveston Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
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Mon -- 01:21 AM CDT     -1.81 knots Max Ebb
Mon -- 05:37 AM CDT     0.00 knots Slack
Mon -- 07:17 AM CDT     Sunrise
Mon -- 09:06 AM CDT     1.81 knots Max Flood
Mon -- 10:42 AM CDT     Moonset
Mon -- 03:25 PM CDT     -0.00 knots Slack
Mon -- 06:37 PM CDT     -0.34 knots Max Ebb
Mon -- 07:04 PM CDT     -0.34 knots Min Ebb
Mon -- 07:33 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.6-1.8-1.8-1.5-1.1-0.50.31.11.61.81.71.410.70.40.1-0.1-0.3-0.3-0.3-0.4-0.5-0.8-1.2

Weather Map and Satellite Images
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wmap_A
GOES Local Image of SouthCentralPlains    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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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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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.