Thursday, July2, 2020
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Marine Weather and Tides
Danbury, 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 6:25AMSunset 8:26PM Thursday July 2, 2020 4:54 AM CDT (09:54 UTC) Moonrise 5:11PMMoonset 3:05AM Illumination 89% Phase: Waxing Gibbous; Moon at 12 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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GMZ355 Expires:202007022115;;188429 Fzus54 Khgx 020856 Cwfhgx Coastal Waters Forecast National Weather Service Houston/galveston Tx 356 Am Cdt Thu Jul 2 2020 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. Gmz350-355-022115- Coastal Waters From Freeport To Matagorda Ship Channel Tx Out 20 Nm-coastal Waters From High Island To Freeport Tx Out 20 Nm- 356 Am Cdt Thu Jul 2 2020
.small craft should exercise caution...
Today..South winds 10 to 20 knots becoming 10 to 15 knots in the afternoon. Seas 2 to 4 feet. Haze.
Tonight..South winds 10 to 15 knots. Seas 2 to 3 feet. Haze.
Friday..Southwest winds 5 to 10 knots becoming south in the afternoon. Seas 1 to 2 feet. Haze early in the morning.
Friday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Saturday..Southwest winds 10 to 15 knots. Seas 2 feet.
Saturday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Sunday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and Thunderstorms.
Sunday night..South winds 10 to 15 knots. Seas 2 to 4 feet.
Monday..South winds 10 to 15 knots. Seas 2 to 4 feet. A slight chance of showers and Thunderstorms.
Monday night..South winds 10 to 15 knots. Seas 2 to 4 feet.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 356 Am Cdt Thu Jul 2 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore flow remains fairly strong early this morning, necessitating caution flags for some of this morning. These winds are expected to diminish as the morning goes on, however. This sets us up for a period of lighter winds and calmer seas through the upcoming weekend.


7 Day Forecast for Marine Location Near Danbury, TX
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location: 29.16, -95.2     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 020901 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 401 AM CDT Thu Jul 2 2020

SHORT TERM [Through Friday].

The radar shows some (very) light echoes upstream on the western fringes of our area, and I spy in IR and lightning detection networks some solid thunderstorm signatures way, way to our west nearer the Rio Grande. Of course, with high pressure anchored not too far to our east, none of this is really our problem.

Instead, the focus for the next couple of days (and perhaps even a bit longer, but more on that in the long term section) will be heat. Even by July in SE Texas standards, things are looking pretty hot and humid, particularly this morning when a slew of record high min temps will be in danger for yet another day. With 500 heights only just a shade above 590 that does help keep things from getting too out of hand in the afternoon, but highs will still be on the warm side. Pair that with ample humidity, and maximum heat indices will peak out near the advisory threshold, generally around 105 degrees. The hottest heat index will likely come somewhere on the coastal plain - close enough to the Gulf to maximize humidity, but far enough away that the boundary layer doesn't mix quite as effectively.

As discussed last night, this puts us in a situation that is perhaps not a significant anomaly for the area, but just by the nature of where we are, could still be dangerously hot for folks that must spend significant stretches out in the sun and/or in locations that don't get a lot of air flow.

Beyond the heat, one thing we *may* need to keep an eye on for Friday is an upper trough in the Southeast US retrograding back towards Louisiana. If it moves west enough, quickly enough, we could see a little potential for rain try to sneak in to our eastern edge (Trinity, Polk, Liberty, Chambers counties) Friday afternoon I don't. think . that this will be an issue, but I do creep some slight chances for showers and thunderstorms in to account for that scenario.

LONG TERM [Friday Night Through Thursday].

High temperatures in the mid to upper 90s will continue through the start of next week. Some spots in Burleson County may even get into the triple digits without factoring in the heat index on Saturday and Sunday. Speaking of the heat index, values will remain in the 100 to 105 through next week. Temperatures may cool a few degrees for midweek, but high humidity will persist and you may not notice those few degrees.

The upper level trough mentioned in the short term discussion will remain over the central Gulf coast through most of next week bringing a chance of showers and thunderstorms pretty much every day in the long term period. With the upper trough located to the east, areas generally east of I-45 will have the highest chances of seeing precipitation. Though if the trough slides a bit further west, then pretty much our entire area would be fair game. Coverage of showers and thunderstorms will be higher during the daytime hours thanks to the sun heating us up. Guidance does finally bring high pressure back to the Gulf Coast by the end of next week decreasing the chance of precipitation (but increasing temperatures again).

MARINE.

Winds over the waters are just high enough to continue the need for a SCEC early this morning, but expect that the typical slight weakening of winds in the daytime should allow that to drop off in not too long. From there, expectations are for the usual summertime regime of onshore winds that are closer to 10 knots during the day, and closer to 15 knots at night for the next several days. Some stronger winds may crop up at some point next week, but it's too early to try and pin down specifics on that just yet.

With the onshore flow continuing, look for tides to continue above their astronomical values, but that difference will be smaller as the winds look to be a little weaker. This is a good thing, as astronomical cycles will be bringing normal tides up, keeping the actual expected values of high tide in the general vicinity of 2.5 feet above MLLW.

CLIMATE.

July started a lot like how June ended, with record high minimums being set. The City of Galveston again tied the record high minimum temperature of 84 degrees last set in 2005. The City of Houston broke its record high minimum of 80 degrees set in 1983 with a low of 82 degrees. Houston-Hobby also broke its record high minimum of 80 degrees (set in 1992) with a low of 81 degrees. Record high minimum temperatures will again be possible tonight.

Fowler

PREV DISCUSSION /Issued 1147 PM CDT Wed Jul 1 2020/.

AVIATION [06Z TAF Issuance].

Lower ceilings continue to form through the night bringing MVFR conditions from 06-15Z. Winds will continue to taper off through the evening at 10KTs or less out of the SSW with slightly higher winds coastal.

Tomorrow winds will remain out of the south at 10KTs or less and ceilings will scatter out in the morning. Tomorrow night is showing indications of lowered visibility in most flying areas through early Friday morning with some MVFR to IFR ceilings. 35

PRELIMINARY POINT TEMPS/POPS.

College Station (CLL) 96 74 97 74 98 / 0 0 10 0 10 Houston (IAH) 95 75 96 75 98 / 0 0 10 10 20 Galveston (GLS) 89 79 91 80 91 / 10 10 10 10 10

HGX WATCHES/WARNINGS/ADVISORIES.

TX . High Rip Current Risk until 7 AM CDT this morning for the following zones: Brazoria Islands . Galveston Island and Bolivar Peninsula . Matagorda Islands.

GM . SMALL CRAFT SHOULD EXERCISE CAUTION until 4 AM CDT early this morning 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 . Matagorda Bay . 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.



SHORT TERM . Luchs LONG TERM . Fowler AVIATION . 35 MARINE . Luchs CLIMATE . Fowler


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LUIT2 7 mi55 min S 9.9 G 15 84°F
FPST2 16 mi55 min S 15 G 18 89°F
GRRT2 19 mi55 min SSW 11 G 14 86°F
42043 - GA-252 TABS B 20 mi115 min S 12 G 14 83°F1013.2 hPa (+0.0)
GTOT2 24 mi55 min S 8 G 15 86°F
EPTT2 - 8771013 - Eagle Point, TX 27 mi55 min S 13 G 16 85°F
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 29 mi55 min S 16 G 18 83°F
SGNT2 35 mi55 min S 13 G 19 86°F
MGPT2 - 8770613 - Morgans Point, TX 38 mi55 min S 5.1 G 11 85°F
NCHT2 - 8770777 - Manchester, TX 39 mi55 min SSW 5.1 G 8 84°F
42035 - GALVESTON 22NM East of Galveston, TX 42 mi35 min SSW 14 G 18 83°F 84°F1012.8 hPa81°F
RLOT2 - 8770971 - Rollover Pass, TX 44 mi55 min SSW 7 G 12 84°F
EMAT2 49 mi55 min SSE 12 G 18 86°F

Wind History for USCG Freeport, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Angleton / Lake Jackson, Brazoria County Airport, TX15 mi62 minS 68.00 miOvercast81°F78°F91%1013.4 hPa
Galveston, Scholes Field, TX19 mi63 minS 1310.00 miOvercast84°F79°F85%1013.5 hPa

Link to 5 minute data for KLBX

Wind History from LBX (wind in knots)
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Tide / Current Tables for Alligator Point, West Bay, Texas
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Alligator Point
Click for Map
Thu -- 04:04 AM CDT     Moonset
Thu -- 06:25 AM CDT     Sunrise
Thu -- 07:23 AM CDT     0.95 feet High Tide
Thu -- 12:54 PM CDT     0.81 feet Low Tide
Thu -- 02:39 PM CDT     0.81 feet High Tide
Thu -- 06:10 PM CDT     Moonrise
Thu -- 08:23 PM CDT     Sunset
Thu -- 11:33 PM CDT     -0.40 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.10.10.30.60.80.90.90.90.90.90.80.80.80.80.80.80.70.60.40.1-0.1-0.3-0.4

Tide / Current Tables for San Luis Pass, Texas
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San Luis Pass
Click for Map
Thu -- 03:39 AM CDT     1.96 feet High Tide
Thu -- 04:04 AM CDT     Moonset
Thu -- 06:25 AM CDT     Sunrise
Thu -- 09:15 AM CDT     1.64 feet Low Tide
Thu -- 10:53 AM CDT     1.66 feet High Tide
Thu -- 06:10 PM CDT     Moonrise
Thu -- 07:54 PM CDT     -1.18 feet Low Tide
Thu -- 08:23 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.91.41.81.921.91.81.71.71.61.61.71.61.51.20.80.2-0.3-0.8-1.1-1.2-1.1-0.7-0.2

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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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.