Thursday, June22, 2017 L-36.com


Marine Weather and Tides
Houston, TX

Version 3.4
What's New / NOTES
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 6:20AMSunset 8:26PM Thursday June 22, 2017 1:25 PM CDT (18:25 UTC) Moonrise 4:04AMMoonset 5:59PM 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 Galveston Bay- 1050 Am Cdt Thu Jun 22 2017
.small craft advisory in effect until 4 pm cdt this afternoon...
Rest of today..Southwest winds 10 to 15 knots. Bay waters slightly choppy. Isolated Thunderstorms late in the morning. A chance of showers.
Tonight..South winds 15 to 20 knots. Bay waters choppy. A slight chance of showers and Thunderstorms.
Friday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
Friday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Saturday..South winds 5 to 10 knots becoming northeast in the afternoon. Bay waters smooth. A chance of showers and Thunderstorms.
Saturday night..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Sunday..East winds 5 to 10 knots. Bay waters smooth. Showers and Thunderstorms likely.
Sunday night..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Monday..East winds around 5 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Monday night..East winds 5 to 10 knots becoming northeast after midnight. 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 1050 Am Cdt Thu Jun 22 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Tropical storm cindy made landfall near the texas and louisiana border overnight and will continue moving northward. Offshore winds are slowly backing to the west and will continue to the south through the day. Bands of showers and embedded Thunderstorms can be expected for the next few days. Otherwise...onshore flow should then persist into the weekend.

7 Day Forecast for Marine Location Near Houston, TX
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location: 29.74, -95.33     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 221713
afdhgx
area forecast discussion
national weather service houston galveston tx
1213 pm cdt Thu jun 22 2017

Aviation
Lingering effects from tropical storm cindy will continue to have
impacts of area airports as it continues to move inland today,
primarily with winds at or above 10 knots and gusting to around or
above 20 knots. Those winds will begin westerly, but should back
to southerly by evening.

Most significant rain impact will be for uts and cxo, nearest
what's left of the core showers, and some lightning could be
possible as well nearby. Elsewhere, conditions should gradually
improve toVFR but with some showers passing through the area
through about 00z. MVFR ceilings look to return overnight, and
hang around to around mid-day. For now, only bring cll up toVFR
again in this TAF cycle, but other sites should improve
around just after the end of the forecast period as well.

Luchs

Prev discussion issued 948 am cdt Thu jun 22 2017
update...

center of remnants of cindy continues to lift N near the la tx
border through mid morning, which will accelerate to the nne
through the day. While airmass remains moist, overall coverage of
showers and isolated thunderstorms should be pulled away as well.

Winds will be slow to decrease, but that trend will continue
through the day as well. Same GOES with minor coastal flooding, so
we will be allowing coastal flood advisory to expire at 10am.

We needed to increase rain chances a touch in the far
northeastern counties and made a few updates to better match
current observations elsewhere this morning. All in all, will see
few changes to the forecast with clouds and slowly improving
weather.

Evans
aviation...

bands of precip rotating around cindy will periodically impact terminals
along and east of i-45 today as the storm heads north along the
tx la border. Can't rule out some embedded tstms with some
heating. MVFR ceilings should gradually lift intoVFR territory
outside of precip later this morning and afternoon. 47
marine...

diminishing NW winds will gradually back to the south today as TS cindy
continues to move north along the tx la border today. The
gradient will tighten back up during the afternoon and evening
with speeds back up into small craft advisory criteria. Winds seas
diminish going into the weekend. 47

Preliminary point temps pops
College station (cll) 91 76 95 77 91 30 10 10 30 50
houston (iah) 86 77 92 78 90 50 30 20 30 60
galveston (gls) 85 82 89 82 87 50 20 20 20 40

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution until 4 pm cdt this
afternoon for the following zones: coastal waters from
freeport to the matagorda ship channel out 20 nm.

Small craft advisory until 4 pm cdt this afternoon for the
following zones: coastal waters from high island to
freeport out 20 nm... Galveston bay... Waters from freeport
to the matagorda ship channel from 20 to 60 nm... Waters
from high island to freeport from 20 to 60 nm.

Aviation marine... 25


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 4 mi38 min WSW 9.9 G 13 80°F 84°F1005.2 hPa
MGPT2 - 8770613 - Morgans Point, TX 19 mi38 min SW 12 G 16 80°F 82°F1005.6 hPa
EPTT2 - 8771013 - Eagle Point, TX 28 mi38 min W 8.9 G 13
GRRT2 38 mi38 min SW 11 G 14 82°F 79°F1006.4 hPa
GTOT2 41 mi38 min 81°F 80°F
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 42 mi38 min SW 16 G 18
RLOT2 - 8770971 - Rollover Pass, TX 46 mi38 min WSW 11 G 18 80°F 78°F1006.1 hPa
LUIT2 47 mi38 min W 12 G 17 82°F

Wind History for Morgans Point, TX
(wind in knots)    EDIT      (on/off)   Help
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N17
G24
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N14
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G22
N23
N15
G21
N14
G22
N14
G19
N17
G23
N17
G24
N15
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N13
G19
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NW12
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G16
W11
G14
W9
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1 day
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NE14
G17
NE15
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G18
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G15
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G14
NE10
G15
NE8
G12
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G17
N10
G13
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G20
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E9
G12
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G9
S8
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G11
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E4
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NE2
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N2
G5
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NE7
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G10
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G9
NE13
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NE12
G15

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John Dunn Helistop, TX4 mi51 minSW 610.00 miOvercast81°F73°F79%1005.1 hPa
Houston, Houston Hobby Airport, TX7 mi33 minWSW 810.00 miOvercast80°F75°F85%1006.5 hPa
Houston / Ellington, TX12 mi36 minWSW 97.00 miOvercast82°F80°F94%1006.4 hPa
Houston Intercontinental Airport, TX16 mi33 minWSW 12 G 1710.00 miOvercast81°F73°F79%1005.5 hPa
Houston, Pearland Regional Airport, TX16 mi33 minWSW 8 G 1610.00 miMostly Cloudy83°F73°F72%1006.5 hPa
Houston Southwest Airport, TX18 mi31 minW 810.00 miMostly Cloudy83°F75°F78%1006.8 hPa
Houston, Sugar Land Municipal / Hull Field Airport, TX19 mi33 minWNW 67.00 miLight Rain79°F75°F90%1006.4 hPa

Wind History from MCJ (wind in knots)
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Last 24hrN16
G22
N18
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N15
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G25
N16
G22
N13
G27
N15
G21
N15
G23
N12
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W9W7W10W5W7SW8W11
G18
1 day agoNE9
G15
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G22
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G16
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G19
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G21
NE10NE13NE14
G18
NE12NE10
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G19
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2 days agoN3SE5E5NE8NE7SW10SW6S4CalmW4W5CalmNW7NW5N5N5N6N6NE6NE8NE6
G15
NE13
G19
NE13
G19
N12
G18

Tide / Current Tables for Houston Ship Channel, Galveston Bay, Manchester, Texas
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Houston Ship Channel
Click for Map
Thu -- 02:01 AM CDT     -0.12 feet Low Tide
Thu -- 05:04 AM CDT     Moonrise
Thu -- 06:21 AM CDT     Sunrise
Thu -- 10:09 AM CDT     1.68 feet High Tide
Thu -- 03:32 PM CDT     1.40 feet Low Tide
Thu -- 06:15 PM CDT     1.48 feet High Tide
Thu -- 06:58 PM CDT     Moonset
Thu -- 08:24 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-0.1-0.1-0.10.20.50.81.21.41.61.71.71.61.51.41.41.41.41.51.51.31.10.90.5

Tide / Current Tables for San Jacinto Battleground State Historic Site, Texas
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San Jacinto Battleground State Historic Site
Click for Map
Thu -- 01:48 AM CDT     -0.30 feet Low Tide
Thu -- 05:03 AM CDT     Moonrise
Thu -- 06:20 AM CDT     Sunrise
Thu -- 09:59 AM CDT     1.45 feet High Tide
Thu -- 03:12 PM CDT     1.14 feet Low Tide
Thu -- 06:04 PM CDT     1.21 feet High Tide
Thu -- 06:57 PM CDT     Moonset
Thu -- 08:24 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.3-0.3-0.200.40.711.31.41.51.41.41.31.21.11.21.21.21.21.10.90.60.3

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 (14,3,4,5)
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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.