Thursday, January23, 2020
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Marine Weather and Tides
Tiki Island, TX

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:11AMSunset 5:50PM Thursday January 23, 2020 4:18 AM CST (10:18 UTC) Moonrise 6:19AMMoonset 4:50PM Illumination 3% 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- 357 Am Cst Thu Jan 23 2020
Today..West winds 5 to 10 knots becoming northwest 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. Patchy fog early in the morning.
Tonight..North winds 10 to 15 knots. Bay waters slightly choppy.
Friday..North winds 5 to 10 knots becoming west in the afternoon. Bay waters smooth.
Friday night..South winds around 5 knots becoming east after midnight. Bay waters smooth.
Saturday..East winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the late morning and afternoon.
Saturday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. Showers likely until early morning, then a chance of showers and isolated Thunderstorms late.
Sunday..Northeast winds 5 to 10 knots. Bay waters smooth. A chance of showers in the morning. Isolated Thunderstorms. A slight chance of showers in the afternoon.
Sunday night..Northeast winds 5 to 10 knots. Bay waters smooth.
Monday..East winds 5 to 10 knots becoming southeast in the afternoon. Bay waters smooth.
Monday night..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers late.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 357 Am Cst Thu Jan 23 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Areas of fog may develop between now and mid morning in the wake of last nights weather system, but it should burn off toward mid morning. Seas remain elevated and will be very slow to fall today. Winds. West winds this morning will become northwest as a cold front pushes off the coast later today. Onshore winds should resume late Friday as high pressure moves to the east. Unsettled weather can be expected late Saturday into Sunday as a coastal low develops off the coast...then tracks east.


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 230525 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 1125 PM CST Wed Jan 22 2020

AVIATION [06Z TAF Issuance].

The shower activity has ended for CLL and UTS, but showers and isolated thunderstorms will continue to impact CXO and all sites south through the next few hours before coming to an end. IFR to MVFR CIGs will continue through the night and into tomorrow morning as low level moisture lingers. Patchy fog may also form tonight and into the early morning hours with the best areas of potential development being near CLL, UTS, and CXO. Skies will clear through the day tomorrow as drier, breezier northwesterly flow takes over post front. VFR conditions then expected through the rest of the day tomorrow.

Fowler

PREV DISCUSSION /Issued 557 PM CST Wed Jan 22 2020/.

DISCUSSION. Three rain producing weather systems are forecast to affect the area over the next week in this fairly progressive flow pattern. An upper disturbance will pivot through tonight . with a surface cold front dropping through . a coastal/Gulf low will develop in advance of a short wave over the weekend . and a Pacific front will cross from west to east across the area next Tuesday.

SHORT TERM [Tonight and Thursday]. Round one of rainfall moving through the area now with abundant stratiform rain and deeper convection . showers and can't rule out an isolated thunderstorm. The second round moves through overnight and soundings support the potential for more thunderstorms over the southern half of the area. Brief periods of moderate to heavy rain could accompany any of these isolated thunderstorms. The rain should come to an end before 6 am. Cloudy weather prevails through the arrival of the cold front Thursday 7-10 am (nw-se track) even though temps will end up being warmer in the wake of the Pacific cold front.

Northwest winds becoming north and drying out throughout the day Thursday.

LONG TERM [Thursday Night Through Wednesday]. Thursday night through Friday night . Short wave trough and associated surface cold front clear the area . with subsidence and clearing in its wake as high pressure builds in from the west and a drier airmass filters in. Very pleasant weather then on tap for Friday into Saturday with high pressure in control.

Saturday and Sunday . Surface high pushes east with return flow on backside bringing onshore flow and increasing moisture by Saturday afternoon. Split flow pattern aloft with more short wave energy to cross the region on Sunday with a positively tilted trough in the northern stream . and another shortwave heading out over the Gulf in a southern stream. EC a little stronger with this southern stream disturbance. End result is a complex surface pattern with a low pressure system developing near the coast or over the Gulf . and a return to rain chances . with highest chances over the Gulf and for coastal counties. Still some uncertainty with this feature. Its possible most rain could stay out over the water . but think will see measurable most areas . with at least the possibility heavier rains near the coast.

Monday through Wednesday . Onshore flow Monday keeps fairly moist air mass in place. Another Pacific cold front crosses the region from west to east . mostly likely Tuesday . although as always some timing uncertainty this far out. Models suggest drying out . and colder . drier on Wednesday . but some model differences . uncertainly on the strength of the front.

Reilly

MARINE. Tide levels remain elevated as seas have built throughout the day and were up to 7-9 feet and still building. During the night expect seas of 5-8 feet nearshore and 8-12 feet offshore with winds continuing to increase as the s/w moves through. SCA has been extended for the Gulf waters to 1 pm. Northerly flow in the wake of Thursday's Pacific front quickly becoming northeasterly then on towards easterly as high pressure slides by.

Winds and seas will potentially increase again over the weekend as a Gulf low develops. How much will depend on details of the cyclogenesis . how intense the low becomes. Think GFS may be a bit overdone with the intensity and length of fetch . so went below WNA wave model guidance which is driven by the GFS winds. Winds and seas diminish again early in the week . then bump up again behind Pacific frontal passage on Tuesday with moderate offshore flow behind the fropa Tuesday night and Wednesday.

45 18

PRELIMINARY POINT TEMPS/POPS.

College Station (CLL) 59 52 61 39 65 / 10 0 0 0 10 Houston (IAH) 59 55 66 43 65 / 10 0 0 0 10 Galveston (GLS) 63 59 65 51 63 / 30 0 0 0 20

HGX WATCHES/WARNINGS/ADVISORIES.

TX . None. GM . Small Craft Advisory until 6 AM CST Thursday for the following zones: Galveston Bay . Matagorda Bay.

Small Craft Advisory until 1 PM CST Thursday for the following zones: Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM . Coastal waters from High Island to Freeport TX out 20 NM . Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM . Waters from High Island to Freeport TX from 20 to 60 NM.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GTOT2 1 mi48 min 62°F 60°F1011.1 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 5 mi54 min 62°F 59°F1010.1 hPa
GRRT2 5 mi48 min 60°F 57°F1011 hPa
EPTT2 - 8771013 - Eagle Point, TX 13 mi54 min 60°F 56°F1010.8 hPa
KXIH 18 mi23 min SW 9.9 63°F
RLOT2 - 8770971 - Rollover Pass, TX 20 mi48 min 60°F 54°F1011.3 hPa
42035 - GALVESTON 22NM East of Galveston, TX 21 mi28 min 9.7 G 12 9 ft1012.6 hPa
LUIT2 24 mi48 min 63°F 1012.6 hPa
MGPT2 - 8770613 - Morgans Point, TX 27 mi48 min 60°F 59°F1011.3 hPa
HIST2 29 mi54 min 61°F 57°F1010.9 hPa
FCGT2 - 8772447 - USCG Freeport, TX 37 mi48 min 64°F 59°F1011.8 hPa
FPST2 37 mi48 min 63°F 61°F1011.2 hPa
NCHT2 - 8770777 - Manchester, TX 37 mi48 min 61°F 62°F1011 hPa
SRST2 - Sabine Pass, TX 48 mi18 min S 8 G 11 62°F 1011.8 hPa (-1.4)62°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 mi26 minSW 310.00 miOvercast63°F61°F93%1011.9 hPa
High Island 179A (Apache Corp), LA18 mi43 minW 134.00 miOvercast with Haze63°F0°F%1011.8 hPa

Link to 5 minute data for KGLS

Wind History from GLS (wind in knots)
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Tide / Current Tables for Galveston (Galveston Channel), Texas
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Galveston (Galveston Channel)
Click for Map
Thu -- 12:07 AM CST     0.92 feet High Tide
Thu -- 06:19 AM CST     Moonrise
Thu -- 07:12 AM CST     Sunrise
Thu -- 09:11 AM CST     -0.90 feet Low Tide
Thu -- 04:50 PM CST     Moonset
Thu -- 05:47 PM CST     1.06 feet High Tide
Thu -- 05:49 PM CST     Sunset
Thu -- 10:48 PM CST     0.90 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.90.80.70.40.1-0.3-0.6-0.8-0.9-0.9-0.7-0.4-00.40.70.911.1110.90.90.9

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Thu -- 06:19 AM CST     Moonrise
Thu -- 07:12 AM CST     Sunrise
Thu -- 07:42 AM CST     -2.23 knots Max Ebb
Thu -- 12:34 PM CST     0.00 knots Slack
Thu -- 04:11 PM CST     2.11 knots Max Flood
Thu -- 04:50 PM CST     Moonset
Thu -- 05:49 PM CST     Sunset
Thu -- 11:22 PM CST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-0.6-0.6-0.8-1.1-1.5-1.9-2.2-2.2-2.1-1.8-1.3-0.50.41.31.92.121.71.41.20.90.50.1

Weather Map
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wmap_A
GEOS 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 (5,6,7,8)
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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 numerous 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.