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 7:12AM||Sunset 5:45PM||Tuesday January 16, 2018 6:58 AM CST (12:58 UTC)||Moonrise 6:48AM||Moonset 5:36PM||Illumination 0%|
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|GMZ335 Matagorda Bay-galveston Bay- 410 Am Cst Tue Jan 16 2018 |
.small craft advisory in effect through this evening...
.low water advisory in effect until 4 pm cst this afternoon...
Today..North winds 25 to 30 knots. Gusts to near gale force expected in the morning. Bay waters rough. Rain likely until late afternoon. Light freezing rain and sleet likely in the afternoon. Snow likely late.
Tonight..North winds 15 to 25 knots becoming 15 to 20 knots after midnight. Bay waters choppy. A chance of snow, light freezing rain and sleet in the evening, then a slight chance of light freezing rain, snow and sleet after midnight.
Wednesday..North winds 15 to 20 knots decreasing to 10 to 15 knots in the afternoon. Bay waters choppy becoming slightly choppy in the afternoon.
Wednesday night..Northeast winds 5 to 10 knots. Bay waters smooth. A slight chance of rain.
Thursday..Northeast winds 5 to 10 knots. Bay waters smooth. A slight chance of rain.
Thursday night..East winds 5 to 10 knots. Bay waters smooth. A slight chance of showers.
Friday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Saturday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
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 410 Am Cst Tue Jan 16 2018 |
Synopsis for high island to matagorda ship channel out 60 nm.. A strong cold front will continue pushing southward through the upper texas coastal waters this morning with strong offshore winds and building seas in its wake. There could be some frozen precipitation behind the front before clearing this evening. Wind speeds will gradually diminish Wednesday. High pressure will move east of the region allowing onshore winds to resume by Thursday night and persist into the weekend. The next front should move into the area late Sunday.
7 Day Forecast for Marine Location Near Bolivar Peninsula CDP, TXHourly EDIT Help
Area Discussion for - Houston/Galveston, TX  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus64 khgx 161013|
area forecast discussion
national weather service houston galveston tx
413 am cst Tue jan 16 2018
Arctic cold front is now moving through the coastal waters. Behind the
front, temperatures have been falling with below freezing readings
now across much of our northern counties and likely creating hazardous
driving conditions where mixed precipitation is falling and any accumulations
are occuring. Breezy and gusty north winds behind the front are helping
to drop wind chill readings to around 20 at some spots at 3 am, and
expect these values to continue to fall throughout the day with teens
areawide before sunset. South of the current mixed precipitation locations
and possibly all the way to the coast, areas of rain will transition
over to mixed precipitation as temperatures fall below freezing. Some
enhancement during the day could possibly bring pockets of increasing
mixed precipitation coverage resulting in an increasing travel hazard
where any accumulations develop. The winter storm warning and winter
weather advisory will remain in effect with this package, and will
cover the elevated winds and falling wind chills with the statement.
Precipitation will come to an end from north to south beginning this
afternoon and continuing to the coast tonight as strong high pressure
helps to bring much drier air into the area. Future shifts will likely
be able to adjust remove parts of our area from the warning and advisory,
and we will likely be replacing them with hard freeze warnings (Wednesday
morning's lows in the teens north and 20s south all the way to the
coast) and wind chill advisories (ranging from 5 up north to the teens
at the coast) for much of the area. Wednesday's record low temperatures
are 0 degrees set in 1930 for cll, 15 degrees set in 1930 for the city
of houston, 23 degrees set in 1965 for hou and 23 degrees set in 1885
at gls). Temperatures will struggle to warm on Wednesday and should
peak in the mid to upper 30s, but winds will be much weaker. Thursday
morning's lows will be cold again, ranging from around 20 north to
close to freezing at the coast, and another hard freeze warning will
probably be needed generally to the north of i-10. Look for a warmup
to begin on Thursday, and we might even see some highs in the 70s over
the weekend. As for our next best chance of rain (temperatures will
not be cold enough for anything frozen), it should come around Friday
and Friday night (higher chances near the coast and lower chances inland)
as a mid upper level storm system move eastward across south texas,
and then again on Sunday with the approach and passage of the next
cold front. 42
Will maintain current gale warning and advisory flags, but have made
starting time to the current time as the front is now pushing off
the coast. Will also hoist a low water advisory for the bays
(primarily for the northern parts) as strong nnw winds transport
water out. Observed levels are forecast to be around -1.5 mllw|
the mid morning low tide. There could be some frozen precipitation
behind the front before clearing this evening.
High pressure will move east of the region allowing onshore winds to
resume by Thursday night and persist into the weekend. The next
front should move into the area late Sunday. 47
Transition of precip from liquid to frozen has occurred as far south
as cxo. Temps will continue to fall further in the metro area and
coast thru the day so expect frozen precip there as well. Most of
the precipitation will end by 01z. Strong north winds will develop
in the wake of the front and will begin to subside toward Tuesday
evening. Generally ifr ceilings are expected behind the front
gradually lifting to MVFR this morning with someVFR conditions
developing by late afternoon over the northern TAF sites and after
00z over the south. Skies are expected to becomeVFR areawide
between 06-09z. 47
Preliminary point temps pops
College station (cll) 29 18 36 22 43 60 10 0 10 10
houston (iah) 35 21 38 25 43 70 10 0 10 10
galveston (gls) 44 26 39 32 47 70 30 10 10 10
Hgx watches warnings advisories
Tx... Winter storm warning until midnight cst tonight for the
following zones: austin... Brazos... Burleson... Colorado...
grimes... Harris... Houston... Liberty... Madison...
montgomery... Polk... San jacinto... Trinity... Walker...
Winter weather advisory until midnight cst tonight for the
following zones: brazoria... Chambers... Fort bend...
galveston... Jackson... Matagorda... Wharton.
Gm... Small craft advisory until midnight cst tonight for the
following zones: galveston bay... Matagorda bay.
Gale warning until midnight cst tonight 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.
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|
|RLOT2 - 8770971 - Rollover Pass, TX||3 mi||41 min||N 26 G 29||41°F||49°F||1030.9 hPa|
|HIST2||12 mi||41 min||N 16 G 25||41°F||50°F||1031.4 hPa|
|GNJT2 - 8771341 - Galveston Bay (North Jetty), TX||13 mi||41 min||N 30 G 36||50°F||1030.1 hPa|
|GTOT2||17 mi||41 min||N 20 G 26||40°F||51°F||1031.2 hPa|
|EPTT2 - 8771013 - Eagle Point, TX||19 mi||41 min||N 19 G 27||37°F||49°F||1032.4 hPa|
|42035 - GALVESTON 22NM East of Galveston, TX||19 mi||69 min||N 27 G 31||47°F||53°F||3 ft||1029 hPa (+2.1)||47°F|
|KXIH||22 mi||24 min||NE 29 G 38||45°F||41°F|
|GRRT2||22 mi||41 min||N 27 G 33||39°F||50°F||1031.3 hPa|
|MGPT2 - 8770613 - Morgans Point, TX||26 mi||41 min||N 17 G 24||50°F||1032.9 hPa|
|SRST2 - Sabine Pass, TX||31 mi||59 min||N 16 G 19||44°F||1030.8 hPa (+2.3)||44°F|
|TXPT2||40 mi||41 min||N 24 G 29||44°F||51°F||1029.9 hPa|
|SBPT2 - 8770570 - Sabine Pass North, TX||40 mi||41 min||N 18 G 25||45°F||53°F||1032.4 hPa|
|NCHT2 - 8770777 - Manchester, TX||41 mi||41 min||N 12 G 19||34°F||55°F||1032.9 hPa|
|LUIT2||41 mi||41 min||N 28 G 32||42°F||52°F||1030.6 hPa|
|PORT2 - 8770475 - Port Arthur, TX||42 mi||41 min||N 18 G 22||43°F||49°F||1031.2 hPa|
|KVBS||49 mi||59 min||NNW 26||50°F|
Wind History for Rollover Pass, TX(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Galveston, Scholes Field, TX||22 mi||67 min||N 26 G 33||7.00 mi||Overcast and Windy||44°F||42°F||93%||1030.6 hPa|
|High Island 179A (Apache Corp), LA||22 mi||64 min||NE 26 G 33||5.00 mi||Fog/Mist and Windy||48°F||44°F||87%||1028.8 hPa|
Wind History from GLS (wind in knots)
|1 day ago||E||E||E||E||E||E||E||NE||E||E||E||E||E||E||E||E||SE||SE||SE||SE||SE||SE||SE||SE|
|2 days ago||N|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Rollover Pass |
Click for Map
Tue -- 06:47 AM CST Moonrise
Tue -- 07:13 AM CST Sunrise
Tue -- 12:53 PM CST -0.63 feet Low Tide
Tue -- 05:35 PM CST Moonset
Tue -- 05:42 PM CST Sunset
Tue -- 08:18 PM CST New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Galveston Bay Entrance |
Click for Map
Tue -- 12:06 AM CST -0.14 knots Max Ebb
Tue -- 01:41 AM CST 0.00 knots Slack
Tue -- 02:12 AM CST 0.03 knots Max Flood
Tue -- 02:39 AM CST -0.00 knots Slack
Tue -- 06:48 AM CST Moonrise
Tue -- 07:13 AM CST Sunrise
Tue -- 08:52 AM CST -2.98 knots Max Ebb
Tue -- 01:17 PM CST 0.00 knots Slack
Tue -- 04:27 PM CST 2.24 knots Max Flood
Tue -- 05:36 PM CST Moonset
Tue -- 05:43 PM CST Sunset
Tue -- 08:18 PM CST New Moon
Tue -- 11:57 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 (7,2,3,4)(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.