Tuesday, May23, 2017 L-36.com


Marine Weather and Tides
Danbury, 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 6:23AMSunset 8:13PM Tuesday May 23, 2017 3:49 AM CDT (08:49 UTC) Moonrise 3:53AMMoonset 4:57PM Illumination 6% Phase: Waning Crescent; Moon at 27 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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GMZ355 Coastal Waters From Freeport To The Matagorda Ship Channel Out 20 Nm-coastal Waters From High Island To Freeport Out 20 Nm- 958 Pm Cdt Mon May 22 2017
Rest of tonight..North winds 5 to 10 knots. Seas 2 to 3 feet.
Tuesday..North winds 5 to 10 knots becoming east in the afternoon. Seas 2 to 3 feet. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Tuesday night..Northwest winds 10 to 15 knots becoming north 15 to 20 knots after midnight. Seas 3 to 5 feet. A chance of showers and Thunderstorms in the evening, then a slight chance of showers and Thunderstorms after midnight.
Wednesday..North winds 10 to 15 knots becoming northwest in the afternoon. Seas 3 to 5 feet subsiding to 2 to 3 feet in the afternoon.
Wednesday night..West winds 10 to 15 knots becoming southwest after midnight. Seas 2 to 3 feet.
Thursday..South winds 10 to 15 knots. Seas 2 to 4 feet.
Thursday night..South winds 15 to 20 knots. Seas 3 to 5 feet.
Friday..South winds 15 to 20 knots. Seas 3 to 5 feet.
Friday night..South winds 15 to 20 knots. Seas 3 to 5 feet.
Saturday..South winds 15 to 20 knots. Seas 3 to 5 feet.
Saturday night..South winds 15 to 20 knots. Seas 3 to 5 feet.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 958 Pm Cdt Mon May 22 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore winds will begin to turn west and eventually be out of the north before the frontal passage Tuesday. This cold front will move across the waters late Tuesday but expect winds to already be out of the north by Tuesday late morning. Strengthening to caution levels behind the boundary passage overnight Tuesday night into Wednesday morning. Onshore winds will return early Thursday and quickly strengthen through the day.

7 Day Forecast for Marine Location Near Danbury, TX
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location: 29.16, -95.2     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 230451
afdhgx
area forecast discussion
national weather service houston/galveston tx
1151 pm cdt Mon may 22 2017

Aviation
MVFR conditions across most of TAF sites currently, besides uts,
sgr, and iah which are all at ifr. Expect ceilings to hang tight
through most of the early morning hours. Also expecting
visibilities to lower slightly at cll, uts, cxo, and lbx between
07-11z as the surface moisture plus radiational cooling are in
favor of light fog development. Light winds overnight will also
help to lower visibilities. With the cloud deck in place there
still is a possibility that these TAF sites will remain a tad
warmer to balance out the radiational cooling, and visibilities
will not drop.

Precip has also cleared the region for now, but not for long.

With the cold front moving in from the west tomorrow afternoon,
showers and thunderstorms will move back into cll's vicinity
beginning at 21z. This will spread southward throughout the
afternoon and into the early evening.

Hathaway

Prev discussion /issued 947 pm cdt Mon may 22 2017/
discussion...

all rainfall has diminished across SE texas as of 9:30 pm. Latest
models are showing a lull in the activity during the remainder of
tonight except for off the coast due to a frontal boundary in the
gulf. The front should continue to be a focus for rain chances in
the gulf waters. If the texas tech and nam12 pan out, the next
chances for showers and thunderstorms over the land areas will be
during the mid afternoon lasting into the evening.

Lowered rain chances for tonight and for Thursday morning.

40
prev discussion... /issued 347 pm cdt Mon may 22 2017/
short term (tonight through Tuesday night)...

surface analysis this afternoon showed a remnant boundary/ cold
front stretching from near la ward to south of houston hobby
airport to winnie, with scattered showers developing along this
boundary as it moves southeast towards the coast. Expect the
boundary to continue propagating towards the coast as mid and
upper level flow becomes increasingly perpendicular to the
boundary as a shortwave trough lifts away from east texas.

Subsidence and mid-level dry air advection behind the shortwave
should help limit rain chances tonight after the frontal boundary
clears the coast this evening, but may not entirely prevent a
possible thunderstorm complex advertised in high resolution
guidance from clipping parts of the brazos valley or piney woods
region as it moves out of west texas tonight and weakens.

Additionally, an 80-100 knot upper level jet nosing over the
region will mean that a few showers and maybe a thunderstorm will
remain possible. Not entirely confident on any activity developing
or the west texas thunderstorm complex reaching the region (hence
20 pops north of the coast) but if something is able to develop or
reach the region, cannot rule out some small hail as lapse rates
steepen to nearly 7.5 c/km and the mid-levels of the atmosphere
dry behind today's shortwave. Otherwise, expect overnight lows in
the 60s to low 70s under mostly cloudy skies.

A second shortwave now moving over the texas and oklahoma
panhandles on afternoon water vapor imagery will continue to swing
southeast across texas tonight, reaching the region during the day
tomorrow. This will send another cold front across the region
during the day Tuesday and off the coast Tuesday night, with
scattered showers and thunderstorms developing along and behind
the front as it moves south. The passage of today's frontal
boundary won't completely scour out the moisture in place across
the region tomorrow as precipitable water values remain in the
1.4-1.5 inch range, but slightly less moisture should result in
a lower (but not nonexistent) locally heavy rain threat than
today. Additionally, an inverted-v signature on forecast soundings
out of houston and steep mid- level lapse rates persisting mean
that a few thunderstorms along the front tomorrow may also become
strong to severe and capable of gusty winds and hail. Best chances
for this appear to be along and east of interstate 45 during the
afternoon hours, especially if breaks in the clouds during the
morning contribute to additional destabilization. Afternoon
temperatures on Tuesday are forecast to rise into the mid 70s to
mid 80s.

Expect the cold front to push off the coast Tuesday night with
rain chances tapering off form north to south as drier air filters
in behind the front, with lows Tuesday night in the mid 50s to mid
60s.

Huffman
long term (Wednesday through Sunday)...

north to northwest flow aloft on Wednesday is expected to
gradually transition to shortwave ridging through the end of the
work week, resulting in drier and gradually warming conditions as
highs climb back near 90 by Friday. Shortwave ridging becomes
dampened over the upcoming weekend as a shortwave trough dives
across the four corners. Rain chances increase for the region late
week into the beginning of next week as the passage of this
shortwave trough sends a cold front into the region.

Huffman
marine...

elevated winds and seas will gradually come down later this
afternoon and on into this evening. Periods of mainly scattered
showers and thunderstorms remain possible through Tuesday as
frontal boundaries and a series of disturbances move across the
area. Stronger/deeper northerly winds will not make it into the
gulf until Tuesday night/ Wednesday morning, and caution flags
might be needed during this time. Onshore winds are set to return
to the area by Wednesday night and then strengthen the rest of the
week and on into the weekend. 42

Preliminary point temps/pops
College station (cll) 64 80 56 81 61 / 10 50 30 10 0
houston (iah) 67 83 60 83 63 / 20 40 40 10 0
galveston (gls) 73 81 67 81 73 / 40 40 40 10 0

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

Gm... None.

Aviation/marine... 08


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LUIT2 7 mi50 min N 16 G 18 71°F 80°F
FCGT2 - 8772447 - USCG Freeport, TX 16 mi50 min NNW 6 G 9.9 70°F 81°F1011.2 hPa (-0.6)
GRRT2 19 mi50 min NW 6 G 11 70°F 78°F1010.7 hPa (-0.5)
GTOT2 24 mi50 min 71°F 80°F
EPTT2 - 8771013 - Eagle Point, TX 27 mi50 min NNW 4.1 G 8.9 69°F 78°F1011.1 hPa (-0.4)
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 29 mi50 min NW 7 G 8 80°F1010.2 hPa (-0.6)
SGNT2 35 mi50 min N 9.9 G 12 71°F 79°F1010.4 hPa (-0.7)
KXIH 36 mi35 min N 9.9 72°F 66°F
MGPT2 - 8770613 - Morgans Point, TX 38 mi50 min N 7 G 9.9 69°F 80°F1010.9 hPa (-0.6)
NCHT2 - 8770777 - Manchester, TX 39 mi50 min N 4.1 G 5.1 69°F 77°F1011.3 hPa (-0.7)
LYBT2 42 mi50 min N 5.1 G 8.9 68°F 79°F1010.2 hPa (-0.7)
42035 - GALVESTON 22NM East of Galveston, TX 42 mi60 min NW 16 G 18 71°F 78°F3 ft1009.8 hPa (-1.5)68°F
RLOT2 - 8770971 - Rollover Pass, TX 44 mi50 min NNW 11 G 14 68°F 75°F1010.8 hPa (-0.9)
EMAT2 49 mi50 min NNW 11 G 15 71°F 79°F1010.1 hPa (-0.8)

Wind History for USCG Freeport, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Angleton / Lake Jackson, Brazoria County Airport, TX15 mi57 minN 710.00 miOvercast70°F66°F90%1011.2 hPa
Galveston, Scholes Field, TX19 mi58 minNW 1210.00 miOvercast72°F68°F87%1011.1 hPa

Wind History from LBX (wind in knots)
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Last 24hrE9
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S13E4E5S13S6S11S8SW7SE3NE5N4N5N5NE5NE9N5N5N7
1 day agoN4NE4N4CalmCalmN6E7SE17
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2 days agoS8S10SE9SE8E6S5SE10SE11SE8SE8SE12
G17
SE11SE11SE12S8S8SE5E5E3SE5SE3CalmNE4N4

Tide / Current Tables for Alligator Point, West Bay, Texas
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Alligator Point
Click for Map
Tue -- 04:52 AM CDT     Moonrise
Tue -- 06:24 AM CDT     Sunrise
Tue -- 06:26 AM CDT     0.94 feet High Tide
Tue -- 11:44 AM CDT     0.62 feet Low Tide
Tue -- 04:46 PM CDT     0.83 feet High Tide
Tue -- 05:56 PM CDT     Moonset
Tue -- 08:10 PM CDT     Sunset
Tue -- 11:41 PM CDT     -0.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.30.40.60.70.90.90.90.90.80.70.60.60.60.70.80.80.80.80.60.50.30.1-0

Tide / Current Tables for Christmas Point, Christmas Bay, Texas
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Christmas Point
Click for Map
Tue -- 04:53 AM CDT     Moonrise
Tue -- 06:10 AM CDT     0.93 feet High Tide
Tue -- 06:24 AM CDT     Sunrise
Tue -- 11:23 AM CDT     0.61 feet Low Tide
Tue -- 04:38 PM CDT     0.85 feet High Tide
Tue -- 05:56 PM CDT     Moonset
Tue -- 08:10 PM CDT     Sunset
Tue -- 11:35 PM CDT     -0.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.30.40.60.80.90.90.90.80.70.70.60.60.70.70.80.80.80.80.60.50.30.1-0

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 (4,6,7,8)
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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.