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 6:47AM||Sunset 5:23PM||Sunday November 19, 2017 6:06 AM CST (12:06 UTC)||Moonrise 7:39AM||Moonset 6:34PM||Illumination 1%|
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|GMZ335 Matagorda Bay-galveston Bay- 313 Am Cst Sun Nov 19 2017 |
.low water advisory in effect until 6 pm cst this evening...
.small craft advisory in effect until noon cst today...
Today..North winds 15 to 25 knots decreasing to 10 to 15 knots in the afternoon. Bay waters rough this morning becoming choppy in the afternoon.
Tonight..Northeast winds 5 to 10 knots. Bay waters smooth.
Monday..East winds around 10 knots becoming southeast in the afternoon. Bay waters smooth to slightly choppy becoming smooth in the afternoon.
Monday night..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers after midnight.
Tuesday..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers.
Tuesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
Wednesday..North winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday night..North winds 10 to 15 knots. Bay waters slightly choppy.
Thursday..North winds 5 to 10 knots. Bay waters smooth.
Thursday night..North winds 5 to 10 knots becoming northeast after midnight. Bay waters smooth.
|GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 313 Am Cst Sun Nov 19 2017 |
Synopsis for high island to matagorda ship channel out 60 nm.. Strong offshore winds will continue this morning with frequent gale force gusts and elevated seas. Winds and seas will diminish this afternoon and evening. Easterly to southeast winds should resume Monday and Tuesday as high pressure moves off to the east. The next cold front will push off the coast Tuesday night or early Wednesday morning.
7 Day Forecast for Marine Location Near Anahuac, TXHourly EDIT Help
Area Discussion for - Houston/Galveston, TX  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus64 khgx 191127|
area forecast discussion
national weather service houston galveston tx
527 am cst Sun nov 19 2017
Vfr conditions are expected to persist for the next 24-30 hours at
the southeast texas terminals. Scattered to broken high clouds
between fl150-fl250 are expected to spread overhead by the end of
the TAF period as a disturbance evident over arizona on morning
water vapor imagery translates east. Northerly winds in the 10-15
knot range this morning at inland terminals will gradually
decrease from the late morning through the afternoon hours as a
surface high slides near the region. A few stronger gusts around
20 knots will be possible with daytime mixing. For galveston,
stronger winds in the 20-30 knot range will persist through mid-
morning but also decrease in response to the relaxing surface
pressure gradient from the surface high's approach.
Prev discussion issued 345 am cst Sun nov 19 2017
still seeing cold air advection early this morning across
southeast texas. Also, still windy along the immediate coast, but
expect winds to gradually subside later this morning. Plan to let
the coastal wind advisory expire at 6 am. Some cirrus clouds are
moving across, but we will see plenty of Sun today with MAX temps
in the mid 60s and low relative humidity in the afternoon.
The mid upper pattern will gradually amplify this week with a
strong ridge centered west of texas and a deep trough over the
eastern u.S. This pattern will bring a reinforcing cold front
through tues night Wed morning. As an upper level short wave
trough moves across and deepens to our east there will be a
chance of showers along the coast and offshore mainly in the
Monday night through Tuesday night period. Some uncertainty
exists on how far inland we could see showers on Tuesday. Both
the 00z ECMWF and GFS are showing the precip chance generally
southeast of a wharton to houston line and the best chances of
Thanksgiving looks dry and cool; fairly similar to the weather
will experience today, just not as breezy along the coast as what
we will start out with today. Expect a warmup at the end of the
week and into next weekend as the upper level ridge to our west
shifts east further into texas.
little change has been made to the ongoing marine forecast in the
short term with strong offshore flow, frequent gale force gusts, and
6-10 foot waves expected to persist through mid-morning. Expect
winds to improve late morning through the afternoon as surface high
pressure pushes farther south into texas, but small craft advisories
have been issued to cover the elevated (but lowering) winds and
waves during this time. Light northeasterly winds will become
established by this evening and veer onshore by Tuesday ahead of the
next cold front moving into the waters late Tuesday or Wednesday.
Another round of caution or advisory flags may be needed behind the
Water levels are currently running 1 to 1.5 feet below normal in the
upper reaches of the bays and into the houston ship channel as a
result of the strong offshore flow. Offshore flow will begin
decreasing later this morning but a low water advisory has been
issued for both galveston and matagorda bays through this afternoon
with low tides occuring between 11:30 am and 4:00 pm cst.
elevated fire weather conditions will be possible today behind a
strong cold front as drier air results in minimum relative
humidities falling into the 25-30 percent range. 20 foot wind speeds
will start out in the early morning between 10 and 15 mph over the
central and coastal areas. However, these should diminish throughout
the day. There may be a brief period during the midday period for
elevated fire conditions over the southwestern set of counties,
especially in locations where finer fuels such as grasses have dried.
Preliminary point temps pops
College station (cll) 65 43 66 51 73 0 0 0 0 10
houston (iah) 66 44 66 52 73 0 0 0 10 10
galveston (gls) 64 56 67 60 71 0 0 10 20 20
Hgx watches warnings advisories
Tx... Wind advisory until 6 am cst early this morning for the
following zones: brazoria... Chambers... Galveston...
Gm... Low water advisory from noon today to 6 pm cst this evening for
the following zones: galveston bay... Matagorda bay.
Small craft advisory until noon cst today for the following
zones: galveston bay... Matagorda bay.
Small craft advisory from 9 am this morning to noon cst today
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.
Small craft should exercise caution from noon today to 4 pm cst
this afternoon 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.
Gale warning until 9 am cst this morning 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.
Small craft advisory from 9 am this morning to 4 pm cst this
afternoon 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.
aviation marine... 14
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|
|SRST2 - Sabine Pass, TX||35 mi||127 min||N 17 G 20||51°F||1022.9 hPa (+1.2)||37°F|
|42035 - GALVESTON 22NM East of Galveston, TX||38 mi||77 min||N 27 G 35||56°F||71°F||6 ft||1021.9 hPa (+1.3)||43°F|
|KXIH||39 mi||32 min||55°F||39°F|
Wind History for Morgans Point, TX(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Houston / Ellington, TX||26 mi||2.3 hrs||N 14 G 21||10.00 mi||Fair||54°F||37°F||54%||1024.4 hPa|
Wind History from EFD (wind in knots)
|1 day ago||Calm||Calm||Calm||S||S||S||S||S||S||S||SE||S||S||S||S||S||S||S||S||S|
|2 days ago||Calm||E||E||E||E||E||E||E||E||E||E||E||SE||SE||Calm||SE||SE||E||Calm||Calm||SE||Calm||Calm|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Round Point |
Click for Map
Sun -- 04:00 AM CST 0.91 feet Low Tide
Sun -- 04:12 AM CST 1.12 feet High Tide
Sun -- 06:46 AM CST Sunrise
Sun -- 07:38 AM CST Moonrise
Sun -- 01:07 PM CST 0.98 feet High Tide
Sun -- 03:26 PM CST 0.01 feet Low Tide
Sun -- 05:21 PM CST Sunset
Sun -- 06:34 PM CST Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Point Barrow |
Click for Map
Sun -- 03:22 AM CST 1.00 feet Low Tide
Sun -- 06:47 AM CST Sunrise
Sun -- 07:39 AM CST Moonrise
Sun -- 08:15 AM CST 1.07 feet High Tide
Sun -- 02:54 PM CST 0.01 feet Low Tide
Sun -- 05:21 PM CST Sunset
Sun -- 06:35 PM CST Moonset
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.