Marine Weather and Tides
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 6:54AM||Sunset 6:11PM||Saturday February 17, 2018 8:50 PM CST (02:50 UTC)||Moonrise 8:09AM||Moonset 8:01PM||Illumination 8%|
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|GMZ355 Coastal Waters From Freeport To The Matagorda Ship Channel Out 20 Nm-coastal Waters From High Island To Freeport Out 20 Nm- 624 Pm Cst Sat Feb 17 2018 |
.dense fog advisory in effect until noon cst Sunday...
Tonight..East winds 5 to 10 knots. Seas 2 to 3 feet. Areas of dense fog. A slight chance of showers.
Sunday..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Areas of dense fog. A slight chance of showers.
Sunday night..Southeast winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Seas 2 to 4 feet. Areas of fog. A slight chance of showers.
Monday..South winds around 15 knots. Seas 3 to 5 feet. Areas of fog. Isolated showers and Thunderstorms.
Monday night..Southeast winds 15 to 20 knots. Seas 4 to 5 feet with occasional seas up to 6 feet. Areas of fog.
Tuesday..Southeast winds 15 to 20 knots. Seas 4 to 5 feet with occasional seas up to 6 feet. Areas of fog. Scattered showers and Thunderstorms.
Tuesday night..Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 7 feet. Areas of fog. Scattered showers and Thunderstorms.
Wednesday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Areas of fog. Showers and Thunderstorms likely.
Wednesday night..Southeast winds 5 to 10 knots becoming northeast after midnight. Seas 3 to 5 feet. Showers likely and isolated Thunderstorms.
Thursday..Northeast winds 5 to 10 knots becoming east in the afternoon. Seas 2 to 4 feet. A chance of showers and isolated Thunderstorms.
Thursday night..Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Scattered showers and isolated Thunderstorms.
|GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 624 Pm Cst Sat Feb 17 2018 |
Synopsis for high island to matagorda ship channel out 60 nm.. Periods of locally dense sea fog will persist through the weekend. A stationary boundary will become diffuse and onshore winds will redevelop later tonight. A strengthening onshore flow is expected late Sunday as another area of low pressure develops over the central plains.
7 Day Forecast for Marine Location Near Jamaica Beach, TXHourly EDIT Help
Area Discussion for - Houston/Galveston, TX  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus64 khgx 172356|
area forecast discussion
national weather service houston galveston tx
556 pm cst Sat feb 17 2018
A weak front extended from about liberty to downtown houston and
then along the i-69 corridor to about edna. Showers were beginning
to develop along this feature. Short term guidance shows the
boundary remaining nearly stationary and gradually becoming
diffuse. Low ceilings expected to develop areawide as deep mstr
builds beneath a capping inversion. Lifr ifr CIGS expected late
tonight into Sunday morning with a gradual improvement to MVFR by
afternoon. Sea fog will be an issue along the coast and visibility
will fall below a mile at times at kgls and probably klbx. 43
Prev discussion issued 404 pm cst Sat feb 17 2018
scattered showers that developed along the stalled surface boundary
over the coastal counties is continuing to move off to the E this
afternoon while the activity approaching from nc tx appears to be
weakening as it nears the area. Otherwise, we are seeing a few
more breaks in the overcast clouds in between these systems.
Slightly less active weather is expected tomorrow as the frontal
boundary continues to weaken and high pressure becomes more
prominent. Sea fog should return to the bays overnight tomorrow.
Looking ahead, this rather wet unsettled pattern of late is progged
to continue as the subtropical jet remains a dominant feature for
se tx. The persistent upper troffing to our west should allow for
a series of disturbances to move across the region these next
several days. And with the onshore flow staying in place, we will
likely keep at least low rain chances in the forecast as the baseline...
then increasing them with the passage of these shortwaves. One is
timed for weds along with pws ranging from 1.5" - 1.7" for this
same timeframe. Did go with likely pops but holding off with the|
mention of heavy rain for now. 41
a dense fog advisory is currently in effect for the nearshore waters
until 18z Sunday. Both matagorda and galveston bay saw improvement
in visibilities throughout the day as the fog bank retreated, but
expect the return of lowered visibilities this evening. A dense fog
advisory will likely be needed for both bays tonight. The
development of sea fog, especially within the nearshore waters will
be possible through the middle of next week.
Southwesterly winds will turn southeasterly overnight, and which
should also help with the development of sea fog. Sea heights will
remain between 2 to 3 feet through the weekend before increasing to
4 to 6 feet Monday into Tuesday. Wind speeds will pick up as the
pressure gradient tights, and scec criteria will likely be needed in
the gulf waters. The next front is expected to move into SE tx on
Wednesday, but based off the disagreement in model guidance, it is
still unclear whether this front will reach the coast. Trends in the
most recent model solutions reveal the possibility of this front
stalling out inland, which would keep the possibility of sea fog
development continuing through mid-week.
Preliminary point temps pops
College station (cll) 54 71 64 79 66 30 20 20 20 20
houston (iah) 57 74 65 78 67 30 20 20 20 10
galveston (gls) 62 71 64 73 66 20 20 20 20 10
Hgx watches warnings advisories
Gm... Dense fog advisory until noon cst Sunday 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.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|GRRT2||9 mi||50 min||SSE 6 G 8.9||66°F||69°F||1020.1 hPa (+1.3)|
|LUIT2||11 mi||50 min||ESE 5.1 G 7||64°F||1019.9 hPa (+1.3)|
|GTOT2||13 mi||50 min||S 4.1 G 6||68°F||62°F||1019.8 hPa (+1.3)|
|GNJT2 - 8771341 - Galveston Bay (North Jetty), TX||18 mi||50 min||S 9.9 G 12||59°F||1019.6 hPa (+1.1)|
|EPTT2 - 8771013 - Eagle Point, TX||20 mi||50 min||SSW 9.9 G 11||68°F||64°F||1020.2 hPa (+1.6)|
|FCGT2 - 8772447 - USCG Freeport, TX||24 mi||50 min||E 5.1 G 6||66°F||58°F||1020.5 hPa (+1.3)|
|KXIH||25 mi||35 min||S 9.9||70°F||70°F|
|42035 - GALVESTON 22NM East of Galveston, TX||31 mi||60 min||S 9.7 G 9.7||65°F||62°F||2 ft||1020.1 hPa (+1.5)||65°F|
|RLOT2 - 8770971 - Rollover Pass, TX||33 mi||50 min||S 6 G 8||64°F||65°F||1020.2 hPa (+1.4)|
|MGPT2 - 8770613 - Morgans Point, TX||33 mi||50 min||N 8 G 12||61°F||61°F||1020.7 hPa (+2.5)|
|NCHT2 - 8770777 - Manchester, TX||39 mi||50 min||N 5.1 G 9.9||62°F||64°F||1020.5 hPa (+2.9)|
|HIST2||42 mi||50 min||S 6 G 8||65°F||66°F||1020.4 hPa (+1.3)|
|SGNT2||45 mi||56 min||E 5.1 G 6||66°F||66°F||1019.6 hPa|
Wind History for Galveston Pleasure Pier, TX(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Galveston, Scholes Field, TX||8 mi||58 min||SSE 6||0.50 mi||Fog||66°F||66°F||100%||1020.2 hPa|
Wind History from GLS (wind in knots)
|1 day ago||SE||SE||S||S||S||S||S||S||S||S||S||S||Calm||Calm||Calm||SW||S||S||S||S||S||S||S||SE|
|2 days ago||SE||SE||SE||SE||S||SE||SE||SE||SE||SE||SE||SE||SE||SE||S||S||S||S||S||S||S||S||S||SE |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Jamaica Beach |
Click for Map
Sat -- 01:59 AM CST 0.42 feet Low Tide
Sat -- 06:20 AM CST 0.61 feet High Tide
Sat -- 06:57 AM CST Sunrise
Sat -- 08:08 AM CST Moonrise
Sat -- 02:20 PM CST -0.18 feet Low Tide
Sat -- 06:11 PM CST Sunset
Sat -- 08:01 PM CST Moonset
Sat -- 08:54 PM CST 0.61 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Bolivar Roads |
Click for Map
Sat -- 01:51 AM CST -0.66 knots Max Ebb
Sat -- 04:59 AM CST -0.25 knots Min Ebb
Sat -- 06:56 AM CST Sunrise
Sat -- 08:07 AM CST Moonrise
Sat -- 10:47 AM CST -1.24 knots Max Ebb
Sat -- 02:48 PM CST 0.00 knots Slack
Sat -- 05:58 PM CST 1.44 knots Max Flood
Sat -- 06:10 PM CST Sunset
Sat -- 08:00 PM CST Moonset
Sat -- 10:37 PM CST -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of SouthCentralPlains EDIT
Wind Forecast for Houston/Galveston, TX (21,6,7,8)(on/off)  Help
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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.