Friday, August23, 2019 L-36.com


Marine Weather and Tides
Danbury, TX

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:53AMSunset 7:55PM Friday August 23, 2019 6:42 AM CDT (11:42 UTC) Moonrise 11:58PMMoonset 12:56PM Illumination 46% Phase: Third Quarter Moon; Moon at 23 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 Expires:201908232215;;075652 Fzus54 Khgx 230901 Cwfhgx Coastal Waters Forecast National Weather Service Houston/galveston Tx 401 Am Cdt Fri Aug 23 2019 Upper Texas Coastal Waters From High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest 10 Percent Of The Waves. Gmz350-355-232215- Coastal Waters From Freeport To Matagorda Ship Channel Tx Out 20 Nm-coastal Waters From High Island To Freeport Tx Out 20 Nm- 401 Am Cdt Fri Aug 23 2019
Today..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Showers likely until late afternoon. Scattered Thunderstorms. A chance of showers late.
Tonight..South winds 10 to 15 knots. Seas 3 feet. A slight chance of showers in the evening, then scattered Thunderstorms and a chance of showers after midnight.
Saturday..South winds around 10 knots. Seas 2 to 3 feet. Showers likely in the morning. A chance of Thunderstorms. A chance of showers in the afternoon.
Saturday night..South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and a slight chance of Thunderstorms.
Sunday..South winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and a slight chance of Thunderstorms.
Sunday night..South winds 10 to 15 knots. Seas 2 to 4 feet. A chance of showers and Thunderstorms in the evening, then a slight chance of showers and Thunderstorms after midnight.
Monday..South winds 10 to 15 knots. Seas 2 to 4 feet. A slight chance of showers and Thunderstorms.
Monday night..South winds 15 to 20 knots. Seas 3 to 4 feet.
Tuesday..South winds 10 to 15 knots. Seas 2 to 4 feet. A slight chance of showers and Thunderstorms.
Tuesday night..South winds 10 to 15 knots. Seas 2 to 3 feet.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 401 Am Cdt Fri Aug 23 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Generally light to moderate onshore winds will prevail the next few days. Increasing moisture from the gulf will help to fuel the development of of scattered to widespread showers through the weekend.


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 231123
afdhgx
area forecast discussion
national weather service houston galveston tx
623 am cdt Fri aug 23 2019

Aviation [12z TAF issuance]
Fairly messy day of flying conditions ahead as an upper trough
moves up the western gulf coast. Main hazard will be the
development of scattered to numerous showers and thunderstorms
from cxo coastward.VFR CIGS and vsby for the most part, but both
ceilings and visibility may degrade to MVFR or worse when rain and
storms impact any terminals.

Have tried to sketch out the most likely time for impacts to
specific terminals with tempos, but be on the lookout for
amendments today!

Prev discussion issued 359 am cdt Fri aug 23 2019
Discussion
- best chances of storms today and Saturday. Main hazard will be
locally heavy rainfall with mainly street flooding possible.

- chances of storms continue early next week but with coverage
closer to isolated to widely scattered.

- ridging builds over texas again leading to high temps back in
the upper 90s next week.

Short term [today and tonight]
Radar shows a bit of activity over the gulf waters and immediate
coastal areas late tonight, setting the stage for another day of
scattered showers and thunderstorms. Goes-east shows precipitable
water increasing towards the gulf, associated an upper trough that
shows up very nicely on mid-level WV imagery.

There is not a ton of convection going on with this feature quite
yet, but there's a handful of showers popping up over the gulf. As
the upper low and its moisture surge make their way up the western
gulf coast, we should see it enhance the typical diurnal pattern
of showers and storms. Because of this, I go as high as likely
pops near the coast, but still keep a pretty sharp gradient with
slight chance low end chance pops in the far inland around college
station.

Given the amount of moisture - precipitable water exceeding 2.25
inches - with deep warm cloud depths making for efficient precip
moving into the picture, I certainly can't rule out some
localized torrential rainfall from the strongest of the storms. If
that falls over the wrong spots, we would certainly see a
smattering of flooding on roads and poor drainage areas. However,
a lot of the items on the checklist for widespread heavy rain
aren't really there, which is reassuring.

Luchs

Long term [Saturday through Friday]
Saturday's forecast looks to be a wash rinse repeat of today's
forecast as higher moisture lingers over the area and the tropical
wave located between SE texas and SW louisiana. Upper level
ridging is virtually non-existent over the area so no real
subsidence to worry about and convective initiation will be more
of a function of day time heating and convergence from local
boundaries moisture gradients. Precipitable water values will
certainly be in that 2.1 to 2.3 inch amounts. Storm motions should
be enough to keep storms moving to limit the overall flood threat
but no doubt a storm could cause street flooding with this much
moisture. Sunday into Monday we see a decrease in rain chances as
precipitable water values rapidly decrease with the tropical wave
moving east away from the region.

To start the work week next week, there is a strong trough over
the northern plains that supports NW flow aloft. Any frontal
boundary with this trough stays north of the area likely stalling
along the red river. By midweek the upper level ridge over the
southern rockies expands over texas. This feature should persist
through the rest of the week so have precipitation chances
lowering through next Friday with high temperatures increasing
back into the upper 90s for a larger portion of the area.

Overpeck

Preliminary point temps pops
College station (cll) 97 77 96 76 97 30 10 30 10 20
houston (iah) 93 79 92 78 93 70 30 50 20 30
galveston (gls) 89 82 90 82 91 80 60 60 50 40

Hgx watches warnings advisories
Tx... None.

Gm... None.

Short term... Luchs
long term... Overpeck
aviation... Luchs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LUIT2 7 mi55 min S 8.9 G 12 84°F 86°F1012.4 hPa
FPST2 16 mi61 min S 12 G 14 84°F 86°F1011.9 hPa
GRRT2 19 mi61 min SSW 7 G 9.9 84°F 87°F1011.8 hPa
42043 - GA-252 TABS B 20 mi103 min SSE 14 G 16 87°F1011.9 hPa (-0.3)
GTOT2 24 mi61 min S 5.1 G 7 84°F 88°F1012.2 hPa
EPTT2 - 8771013 - Eagle Point, TX 27 mi61 min S 7 G 8.9 84°F 86°F1011.7 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 29 mi61 min S 11 G 14 85°F 87°F1011.4 hPa
SGNT2 35 mi55 min S 8.9 G 12 85°F 87°F1011.8 hPa
KXIH 36 mi28 min SW 11 84°F 77°F
MGPT2 - 8770613 - Morgans Point, TX 38 mi61 min S 5.1 G 7 83°F 87°F1012.5 hPa
NCHT2 - 8770777 - Manchester, TX 39 mi61 min S 1.9 G 2.9 82°F 88°F1012.1 hPa
42035 - GALVESTON 22NM East of Galveston, TX 42 mi43 min S 12 G 14 85°F 1013.4 hPa (+0.0)80°F
RLOT2 - 8770971 - Rollover Pass, TX 44 mi55 min SSE 5.1 G 7 83°F 88°F1012.7 hPa
EMAT2 49 mi61 min S 9.9 G 11 84°F 88°F1011.6 hPa

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 mi1.8 hrsN 010.00 miFair77°F73°F90%1012.1 hPa
Galveston, Scholes Field, TX19 mi2.8 hrsS 1010.00 miA Few Clouds84°F75°F77%1012.6 hPa

Link to 5 minute data for KLBX

Wind History from LBX (wind in knots)
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Last 24hrCalmN3SE5--E6E7E6NE6SE12
G19
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SE11SE6------Calm--Calm--CalmCalmCalm
1 day agoCalm----S4S6S7S10S9--S9S10SE10SE8SE7S5--SE3SE4--CalmCalm--CalmCalm
2 days agoCalmCalmCalmCalmSW10S9S4SW433--SE8S6SE5----SE4------Calm--CalmCalm

Tide / Current Tables for Alligator Point, West Bay, Texas
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Alligator Point
Click for Map
Fri -- 12:16 AM CDT     Moonrise
Fri -- 02:59 AM CDT     0.79 feet High Tide
Fri -- 05:15 AM CDT     0.77 feet Low Tide
Fri -- 06:53 AM CDT     Sunrise
Fri -- 09:58 AM CDT     Last Quarter
Fri -- 10:01 AM CDT     0.84 feet High Tide
Fri -- 01:56 PM CDT     Moonset
Fri -- 07:13 PM CDT     0.19 feet Low Tide
Fri -- 07:52 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.70.80.80.80.80.80.80.80.80.80.80.80.80.70.60.40.30.20.20.20.20.30.4

Tide / Current Tables for San Luis Pass, Texas
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San Luis Pass
Click for Map
Fri -- 12:16 AM CDT     Moonrise
Fri -- 01:37 AM CDT     1.54 feet Low Tide
Fri -- 06:16 AM CDT     1.71 feet High Tide
Fri -- 06:53 AM CDT     Sunrise
Fri -- 09:58 AM CDT     Last Quarter
Fri -- 01:56 PM CDT     Moonset
Fri -- 03:34 PM CDT     0.18 feet Low Tide
Fri -- 07:52 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.61.51.61.61.71.71.71.71.61.41.20.90.60.30.20.20.30.40.70.91.21.51.7

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (7,2,3,4)
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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.