Sunday, May19, 2019 L-36.com


Marine Weather and Tides
Dayton, TX

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:23AMSunset 8:10PM Sunday May 19, 2019 5:33 AM CDT (10:33 UTC) Moonrise 8:10PMMoonset 6:08AM Illumination 100% Phase: Full Moon; Moon at 15 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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GMZ335 Expires:201905192215;;107505 Fzus54 Khgx 190924 Cwfhgx Coastal Waters Forecast National Weather Service Houston/galveston Tx 424 Am Cdt Sun May 19 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. Gmz330-335-192215- Matagorda Bay-galveston Bay- 424 Am Cdt Sun May 19 2019
Today..South winds 10 to 15 knots. Bay waters slightly choppy.
Tonight..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Monday..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Monday night..Southeast winds 15 to 20 knots increasing to 20 to 25 knots after midnight. Bay waters choppy becoming rough after midnight.
Tuesday..South winds 15 to 20 knots. Bay waters choppy. A slight chance of showers and Thunderstorms.
Tuesday night..South winds around 15 knots. Bay waters slightly choppy to choppy.
Wednesday..Southeast winds 15 to 20 knots. Bay waters choppy.
Wednesday night..Southeast winds 15 to 20 knots. Bay waters choppy.
Thursday..Southeast winds 15 to 20 knots. Bay waters choppy.
Thursday night..Southeast winds 15 to 20 knots. Bay waters choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 424 Am Cdt Sun May 19 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Weaker winds through the day as high pressure building in from the north will temporarily relax the onshore pressure gradient. As low pressure redevelops and deepens over western texas, the gradient will significantly tighten once again tomorrow into Tuesday. Onshore winds will strengthen to advisory levels by Monday evening.


7 Day Forecast for Marine Location Near Dayton, TX
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location: 30.11, -95     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 190919
afdhgx
area forecast discussion
national weather service houston galveston tx
419 am cdt Sun may 19 2019

Discussion
Early morning skies are mostly cloudy to cloudy across much of southeast
texas with temperatures in the upper 70s to around 80. Record high minimum
temperatures were tied yesterday at both cll and hou, and we might get
close to records again today at some of our sites (see climate section
below for more details). The MCS and associated showers and thunderstorms
off to our east and northeast continues to make progress further off
to the east, and all heavy rain is now out of our area. We will have to
keep an eye on any leftover boundaries for possible development in our
area today, but current thinking is that most of us will stay warm and dry.

Strengthening onshore winds resume tonight and Monday as the next southern
plains storms system organizes deepens. Our next best rain chances come
on Tuesday when this system sends its front this way, and we'll continue
to carry higher chances north and lower chances south. There might be a
chance for some strong severe thunderstorms with this system (see spc's
day 3 convective outlook), but best dynamics currently look like they
will be setting up well north of our area. The rest of the week is looking
warm and breezy with rain chances too low to mention in the forecast as
mid upper level ridging builds into the area from the east. If the models
are right, by the end of the week and on into next weekend upper level
ridging as well as surface high pressure will edge closer to us. Look for
a little less wind, slightly cooler overnight lows, slightly warmer
daytime highs and close to zero rain chances. 42

Marine
Southern plains surface high pressure expanding south into northern
texas will relax the recently tight onshore pressure gradient. Thus,
today's winds will be weaker over slightly lower seas. Lowering
northern mexico and trans pecos region pressure through Monday will
again tighten the onshore gradient enough to produce moderate to
strong southerlies through a good majority of the week. Seas will
build to their peak Tuesday morning... Average 6 to 8 feet nearshore
to near 10 or 11 feet offshore sea heights with longer periods of 8
or 9 seconds.

Coastal water levels will remain high and, with an early week return
to a strengthened long duration onshore fetch, coastal flooding will
become a concern. 3.5 to 4.0 feet above mllw will occur during
Monday through Thursday's high tides. These levels will cause water
to reach into the dunes and come across low lying sections of the
blue water highway in brazoria county and highway 87 along the
bolivar, especially east of caplen and rollover pass. Swimming
conditions will remain more dangerous as rip currents stay strong
this coming week. 31

Climate
Record high minimum temperatures were tied yesterday at both college
station (76 degrees last set in 2017) and houston hobby (77 degrees
last set in 2017).

For today, the record high minimum temperatures are 78 degrees set in
2017 at iah and hou, 80 degrees set in 2017 at gls (it has already
fallen to 79 degrees) and 77 degrees set in 1960 at cll.

42

Preliminary point temps pops
College station (cll) 89 74 89 73 87 10 10 10 10 50
houston (iah) 89 76 89 76 89 10 10 10 10 30
galveston (gls) 82 78 83 78 84 10 10 10 10 20

Hgx watches warnings advisories
Tx... Coastal flood advisory until 8 pm cdt this evening for the
following zones: brazoria islands... Galveston island and
bolivar peninsula... Matagorda islands.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGPT2 - 8770613 - Morgans Point, TX 30 mi39 min S 5.1 G 6 80°F 79°F1009.1 hPa
NCHT2 - 8770777 - Manchester, TX 30 mi39 min SSW 2.9 G 6 79°F 79°F1008.5 hPa
EPTT2 - 8771013 - Eagle Point, TX 44 mi39 min SSW 16 G 20 80°F 80°F1008.3 hPa
HIST2 48 mi39 min SSW 8 G 13 79°F 79°F1008.8 hPa
RLOT2 - 8770971 - Rollover Pass, TX 49 mi39 min SSW 7 G 13 79°F 79°F1009.3 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cleveland, TX17 mi58 minSSW 44.00 miFog/Mist76°F76°F100%1009.5 hPa
Houston Intercontinental Airport, TX21 mi40 minS 47.00 miOvercast79°F77°F94%1008.9 hPa

Wind History from 6R3 (wind in knots)
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Tide / Current Tables for Lynchburg Landing, San Jacinto River, Texas
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Lynchburg Landing
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Sun -- 04:12 AM CDT     -0.15 feet Low Tide
Sun -- 06:25 AM CDT     Sunrise
Sun -- 07:08 AM CDT     Moonset
Sun -- 01:00 PM CDT     1.48 feet High Tide
Sun -- 08:08 PM CDT     Sunset
Sun -- 09:09 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.30.1-0.1-0.1-0.100.30.60.91.11.31.41.51.41.41.31.21.11.11.1110.8

Tide / Current Tables for Point Barrow, Trinity Bay, Texas
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Point Barrow
Click for Map
Sun -- 03:27 AM CDT     -0.20 feet Low Tide
Sun -- 06:24 AM CDT     Sunrise
Sun -- 07:07 AM CDT     Moonset
Sun -- 12:35 PM CDT     1.32 feet High Tide
Sun -- 05:15 PM CDT     1.00 feet Low Tide
Sun -- 08:07 PM CDT     Sunset
Sun -- 09:08 PM CDT     Moonrise
Sun -- 09:09 PM CDT     1.04 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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.
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Wind Forecast for Houston/Galveston, TX (6,6,7,8)
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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.