Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Beach City, TX

Version 3.4
What's New / NOTES
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 6:21AMSunset 8:25PM Wednesday June 28, 2017 9:11 PM CDT (02:11 UTC) Moonrise 10:14AMMoonset 11:17PM Illumination 25% Phase: Waxing Crescent; Moon at 5 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 Galveston Bay- 341 Pm Cdt Wed Jun 28 2017
Tonight..Southeast winds 10 to 15 knots becoming south after midnight. Bay waters slightly choppy. A chance of showers and Thunderstorms..
Thursday..South winds 10 to 15 knots. Bay waters slightly choppy. Showers and Thunderstorms likely.
Thursday night..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and isolated Thunderstorms.
Friday..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Saturday..South winds around 10 knots. Bay waters smooth to slightly choppy.
Saturday night..South winds 5 to 10 knots. Bay waters smooth.
Sunday..South winds 5 to 10 knots. Bay waters smooth.
Sunday night..South winds around 10 knots. Bay waters smooth to slightly choppy.
Monday..South winds 5 to 10 knots. Bay waters smooth.
Monday night..South winds 10 to 15 knots. Bay waters slightly choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 341 Pm Cdt Wed Jun 28 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Weak low pressure over the north central gulf will move north tonight. Another area of low pressure will develop in the lee of the rockies on Thursday and onshore winds will strengthen in response to this system. Elevated tide levels could produce some minor coastal flooding at high tide later tonight. Onshore winds are expected to persist through the holiday weekend.

7 Day Forecast for Marine Location Near Beach City, TX
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location: 29.67, -94.86     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 290025
afdhgx
area forecast discussion
national weather service houston galveston tx
725 pm cdt Wed jun 28 2017

Discussion
This evening's forecast update can pretty much be summed up with
the latest water vapor imagery. Basically SE texas lies in the
more subsident side of the shear axis with ascending motion to the
east in the gulf and louisiana. As such there have only a few
showers along the coast with most of the activity in the gulf.

These trends should continue overnight into tomorrow morning but
the shear axis aloft should weaken some allowing for at least some
higher moisture to move back into the coastal areas for tomorrow.

Forecast will keep some rain chances but activity may be more
isolated to widely scattered. Really rain chances will continue to
decrease through the end of the week and into the independence day
weekend. The area could quite possibly go a solid week without any
rain chances which means summer time ridging aloft will rule. High
temperatures will get back into the mid 90s. We will need to
monitor heat index values over the weekend as low level moisture
may be high enough to support heat index values near 105f for the
area. With lots of people going outside for holiday activities, it
is a good time to remember to stay hydrated, check the back seat,
look before you lock and swim near lifeguards on the beaches. That
should serve as your psa for the day.

Overpeck

Prev discussion issued 626 pm cdt Wed jun 28 2017
aviation...

a couple tricky features overnight, with potential for low
ceilings, primarily north, and for light showers nearer the coast.

Do tempo some ifr ceilings at cll and uts, even going prevailing
for a short rate at cxo. Go with MVFR ceilings more coastward.

For showers, am real on the fence about how far inland to take any
potential streamer showers. For now, with winds looking to go
northeasterly late tonight into the early morning, have opted for
dry around the houston metro, keeping vcsh only at lbx and gls.

That may have to change if we get wraparound moisture from a low
pressure center over SW louisiana.

Once we work past those features, we should see a return toVFR
for the rest of the period.

Luchs
prev discussion... Issued 317 pm cdt Wed jun 28 2017
discussion...

showers and tstms have been fewer and farther between today as
deep drier air advances into southeast tx, and low level
convergence remains maximized well offshore. However will leave
chance pops near the coast this evening, especially near and east
of galveston bay, as a few showers may still rotate across this
area through sunset.

Expect showers and storms to remain in the forecast for a few
more days, before broad ssely low level flow becomes more
established and washes out some of these persistent surface
boundaries around the upper tx coast by Friday. Thus, will keep
scattered, mainly afternoon showers and tstms in the forecast
through the end of the week with a bit drier forecast into the
weekend. With lowering rain chances and clouds, expect temps to
nudge upwards with highs back to near normal for this time of year
in the lower to mid 90s by the weekend. Current models may be a
bit too cool with afternoon highs through the weekend and into the
4th of july, so have trended towards the warm side of the
guidance. Heat indicies will likely jump back into the lower to
mid 100s this weekend and hold through the middle of next week.

Evans
marine...

a moderate east flow will become south later tonight as a coastal
trough moves east. Low pressure will develop in the lee of the
rockies on Thursday and onshore winds will strengthen in response
to this feature. A strong to moderate onshore flow will persist
Thursday night into Friday night as the low slowly moves east. The
pressure gradient will weaken over the weekend and winds seas
will subside. Elevated tide levels will continue tonight but
should begin to subside on Thursday as the onshore flow become
more s-sw and the astronomical high tide decreases. After
coordinating with the galveston beach patrol, will maintain the
beach hazard statement for elevated tides and strong rip currents.

43
prev discussion... Issued 1240 pm cdt Wed jun 28 2017
aviation...

daytime heating will trigger scattered showers and thunderstorms
but the air mass has begun to dry a little bit. Coverage is less
than the past few days. Light east winds will persist for the
afternoon and winds will decouple overnight. Could get some
showers near the coast late tonight and ifr lifr CIGS possible
over the northern TAF sites late tonight. Convective temps are
warmer on Thursday so showers will likely develop later in the day
except near the immediate coast. 43

Preliminary point temps pops
College station (cll) 73 93 77 94 77 10 10 10 20 10
houston (iah) 74 92 78 93 78 20 30 10 40 10
galveston (gls) 79 88 82 89 81 30 50 10 40 10

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution until 5 am cdt Thursday 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.

Discussion... 39


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGPT2 - 8770613 - Morgans Point, TX 7 mi42 min E 8.9 G 13 81°F 84°F1010.9 hPa
EPTT2 - 8771013 - Eagle Point, TX 13 mi42 min ESE 11 G 14 81°F 84°F1011 hPa
LYBT2 13 mi42 min ESE 8 G 12 80°F 84°F1011 hPa
RLOT2 - 8770971 - Rollover Pass, TX 21 mi42 min SE 9.9 G 11 80°F 85°F1011.4 hPa
NCHT2 - 8770777 - Manchester, TX 22 mi42 min E 2.9 G 9.9 82°F 83°F1010 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 23 mi42 min ESE 9.9 G 11 85°F1010.6 hPa
GTOT2 25 mi42 min 81°F 84°F
HIST2 25 mi42 min E 8.9 G 12 80°F 84°F1011.6 hPa
GRRT2 26 mi42 min E 8 G 11 81°F 84°F1010.9 hPa
KXIH 38 mi37 min S 7 81°F 75°F
42035 - GALVESTON 22NM East of Galveston, TX 38 mi82 min SSE 9.7 G 12 80°F 83°F4 ft1010.8 hPa (-0.4)76°F
LUIT2 43 mi42 min E 8.9 G 11 81°F
SRST2 - Sabine Pass, TX 44 mi72 min E 8 G 11 80°F 1011.9 hPa (-0.6)71°F

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX17 mi82 minE 710.00 miMostly Cloudy82°F75°F79%1011.5 hPa
Houston, Houston Hobby Airport, TX22 mi19 minE 910.00 miPartly Cloudy82°F73°F77%1011.2 hPa
Houston, Pearland Regional Airport, TX23 mi19 minESE 510.00 miMostly Cloudy83°F73°F74%1011.1 hPa

Wind History from EFD (wind in knots)
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Last 24hrE8SE4NE4E4NE4E4E7NE5NE5NE5NE4--E8E9E8E10E11E11E9E10E10E10E7E8
1 day agoNE5SE5SE5CalmNE3E3--CalmCalmCalmE4E5E7E8NE7SE8SE8SE6E9NE6SE7E7E4E4
2 days agoE3E6--E5--------Calm--NE5E6NE6E8NE7E8NE7E9NE10E5E5NE5NE3NE5

Tide / Current Tables for Point Barrow, Trinity Bay, Texas
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Point Barrow
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Wed -- 12:06 AM CDT     0.86 feet High Tide
Wed -- 06:21 AM CDT     Sunrise
Wed -- 06:33 AM CDT     -0.16 feet Low Tide
Wed -- 11:13 AM CDT     Moonrise
Wed -- 03:30 PM CDT     1.07 feet High Tide
Wed -- 08:23 PM CDT     Sunset
Wed -- 08:47 PM CDT     0.66 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.80.70.50.2-0-0.1-0.1-0.100.20.40.60.811.11.110.80.70.70.70.70.7

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
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Wed -- 01:36 AM CDT     -1.73 knots Max Ebb
Wed -- 05:56 AM CDT     0.00 knots Slack
Wed -- 06:22 AM CDT     Sunrise
Wed -- 09:23 AM CDT     1.66 knots Max Flood
Wed -- 11:14 AM CDT     Moonrise
Wed -- 03:20 PM CDT     -0.00 knots Slack
Wed -- 06:12 PM CDT     -0.59 knots Max Ebb
Wed -- 08:22 PM CDT     Sunset
Wed -- 08:31 PM CDT     -0.45 knots Min Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.6-1.7-1.7-1.6-1.2-0.700.81.41.61.61.41.10.80.50.1-0.2-0.5-0.6-0.5-0.5-0.5-0.5-0.7

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 (22,6,7,8)
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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.