Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Tiki Island, 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 6:49AMSunset 7:54PM Sunday August 20, 2017 7:58 PM CDT (00:58 UTC) Moonrise 4:34AMMoonset 6:16PM Illumination 2% Phase: Waning Crescent; Moon at 28 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 Matagorda Bay-galveston Bay- 351 Pm Cdt Sun Aug 20 2017
Tonight..Southeast winds 10 to 15 knots this evening diminishing to 5 to 10 knots overnight. Bay waters smooth to slightly choppy.
Monday through Tuesday night..Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A chance of late night and morning showers and Thunderstorms.
Wednesday..Variable winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A chance of showers and Thunderstorms.
Wednesday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms.
Thursday..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Thursday night..Southeast winds 5 to 10 knots becoming east after midnight. Bay waters smooth. A slight chance of showers and Thunderstorms.
Friday..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Friday night..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 351 Pm Cdt Sun Aug 20 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Low seas and a light to moderate onshore flow will continue for the next several days. Scattered late night and morning showers and Thunderstorms can be expected for much of the week..

7 Day Forecast for Marine Location Near Tiki Island, TX
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location: 29.32, -94.8     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 202112
afdhgx
area forecast discussion
national weather service houston galveston tx
412 pm cdt Sun aug 20 2017

Discussion
Early afternoon coastal convection that flared up over chambers

Galveston and brazoria counties aided in regulating heat
indices to under advisory criteria. Towering CU cbs and their
subsequent cooling rain and outflow(s) kept many ambient
temperatures in the lower 90s and... With dew points in the middle
70s... Allowed heat indices to top out between 100 and 105 f
degrees. Today's near coastal enhanced storm activity a sign of
what we can expect in the coming days. The approach and eventual
stall of broad cyclonic gulf circulation will tap into a greater
than 1.8 inch pw plume creeping in from the east and produce
daytime scattered showers and thunderstorms. The higher chances
for late morning into afternoon tsra activity will be generally
focused along and south of an i-10 highway 59 corridor tomorrow
and Tuesday. Thicker cloud cover and precipitation damp grounds
will have subtle (relative cooling) effects on daytime temperatures.

As dew points will still remain in the middle to upper 70s (mid
to upper 60s within any area lucky enough to experience outflow
air)... Lower to middle 90s maximum temperatures will likely keep
heat indices at or under 105 f. As has been the case the last
couple of days sps versus heat advisories should remain the norm.

The broad western gulf low or inverted trough will come ashore by
early Wednesday. Although upper ridging will generally rule the
synoptic over eastern texas... An approaching southern plains
boundary reaching the red river valley at mid-week may be the
impetus that keeps at least low end pops in place through week's
close. Per weaker winds brought on by upper ridging and it being
late august... Anticipating a more active mid to late work week
sea bay breeze boundary. Either convection and its subsequent
outflow fronts emanating from and along these late am early pm
meso boundaries... Or residual boundaries laying around from
previous day's activity... May interact with this aforementioned
northeastern texas front to produce more widespread northern
county convection on Thursday. Rain chances stay fairly high to
close out the week to account for the above forcing within a
continued heated and very moist late august environment. 31

Tropical
The remnants of harvey... Now a wave over the northwestern caribbean
sea... Is forecast to meander west towards the honduras nicaragua
coastlines. Models do have this feature moving back into the
southern bay of campeche by early Thursday. A brief strengthening
is then forecast with a short jog across the far southern bay of
campeche with a progged landfall over the tampico area Friday. As
of now... There is no immediate concern that harvey will impact
texas or its neighboring waters. 31

Marine
2-3ft seas and a light-moderate onshore flow will continue for the
next several days. Scattered late night and morning showers and
thunderstorms can be expected for much of the week. 47

Preliminary point temps pops
College station (cll) 76 97 75 98 76 10 20 10 20 10
houston (iah) 76 93 77 94 76 10 40 10 40 10
galveston (gls) 84 89 82 90 81 10 30 10 20 10

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... 31 47


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GTOT2 1 mi41 min 87°F 88°F
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 5 mi41 min SE 11 G 13
GRRT2 5 mi41 min ESE 8 G 12 87°F 92°F1015 hPa
EPTT2 - 8771013 - Eagle Point, TX 13 mi41 min SE 11 G 14 88°F 92°F1015.1 hPa
KXIH 18 mi24 min SE 11 86°F 75°F
RLOT2 - 8770971 - Rollover Pass, TX 20 mi41 min SE 8 G 9.9 87°F 91°F1015.2 hPa
42035 - GALVESTON 22NM East of Galveston, TX 21 mi59 min ESE 9.7 G 12 87°F 89°F1 ft1015 hPa (-0.8)76°F
LUIT2 24 mi41 min E 9.9 G 12 87°F
MGPT2 - 8770613 - Morgans Point, TX 27 mi41 min ESE 7 G 11 88°F 89°F1015 hPa
HIST2 29 mi41 min SE 4.1 G 7 88°F 89°F1015.3 hPa
LYBT2 34 mi41 min SE 6 G 13 88°F 88°F1015.1 hPa
FCGT2 - 8772447 - USCG Freeport, TX 37 mi41 min E 7 G 12 87°F 88°F1015.1 hPa
NCHT2 - 8770777 - Manchester, TX 37 mi41 min SSE 6 G 13 88°F 86°F1014 hPa
SRST2 - Sabine Pass, TX 48 mi59 min SE 6 G 8 86°F 1015.7 hPa (+0.0)76°F

Wind History for Galveston Pleasure Pier, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galveston, Scholes Field, TX5 mi67 minSE 1010.00 miFair87°F75°F67%1015 hPa
High Island 179A (Apache Corp), LA18 mi64 minSE 1010.00 miFair88°F75°F66%1014.9 hPa

Wind History from GLS (wind in knots)
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Last 24hrS9S9S9S8S7S7S6SW5CalmCalmNW3CalmCalmNW3W4CalmSE6E9E10E10
G17
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1 day agoS10S10S11S11S10S10S11S8S8SW7SW5SW4NW3SW35W5S6S10S11S7S9S11S9S9
2 days agoS9S5S5S7S10S10S11S10S8S11S12S9SW5S9S9S9S9S8S10S11S10S12S10S10

Tide / Current Tables for Galveston Pier 21, Galveston Channel, Texas
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Galveston Pier 21
Click for Map
Sun -- 05:14 AM CDT     1.57 feet High Tide
Sun -- 05:34 AM CDT     Moonrise
Sun -- 06:50 AM CDT     Sunrise
Sun -- 10:10 AM CDT     1.26 feet Low Tide
Sun -- 02:26 PM CDT     1.47 feet High Tide
Sun -- 07:16 PM CDT     Moonset
Sun -- 07:53 PM CDT     Sunset
Sun -- 10:08 PM CDT     -0.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.50.91.31.51.61.51.51.41.31.31.31.31.41.51.51.31.10.80.40.1-0.1-0.2-0.2

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Sun -- 01:17 AM CDT     0.00 knots Slack
Sun -- 04:38 AM CDT     2.05 knots Max Flood
Sun -- 05:34 AM CDT     Moonrise
Sun -- 06:50 AM CDT     Sunrise
Sun -- 11:41 AM CDT     -0.00 knots Slack
Sun -- 01:21 PM CDT     -0.29 knots Max Ebb
Sun -- 03:09 PM CDT     -0.18 knots Min Ebb
Sun -- 07:16 PM CDT     Moonset
Sun -- 07:53 PM CDT     Sunset
Sun -- 09:55 PM CDT     -2.18 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.2-0.30.71.5221.81.51.20.90.60.2-0.1-0.3-0.3-0.2-0.3-0.5-1-1.5-1.9-2.1-2.2-2.1

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 (20,4,5,8)
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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.