Thursday, August13, 2020
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Marine Weather and Tides
Palacios, 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 6:50AMSunset 8:06PM Thursday August 13, 2020 3:55 AM CDT (08:55 UTC) Moonrise 12:40AMMoonset 2:43PM Illumination 30% Phase: Waning Crescent; Moon at 24 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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GMZ330 Matagorda Bay- 1015 Pm Cdt Wed Aug 12 2020
Rest of tonight..South winds around 10 knots. Bay waters smooth to slightly choppy.
Thursday..South winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon.
Thursday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Friday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms in the morning.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Saturday..South winds around 10 knots. Bay waters smooth to slightly choppy. A slight chance of showers and Thunderstorms.
Saturday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Sunday..Southwest winds 5 to 10 knots becoming south in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms.
Sunday night..South winds around 10 knots becoming southwest after midnight. Bay waters smooth to slightly choppy becoming smooth after midnight.
Monday..West winds 5 to 10 knots becoming south in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Monday night..South winds 5 to 10 knots becoming northwest after midnight. Bay waters smooth becoming smooth to slightly choppy after midnight. A slight chance of showers and Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1015 Pm Cdt Wed Aug 12 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Light to moderate onshore flow will persist through early next week as a surface high pressure system remains centered over the gulf of mexico. The pattern of slightly stronger winds overnight in the gulf shifting into the bays during the day and relaxing over the gulf will prevail into the weekend. Isolated showers and Thunderstorms will be possible at times with increasing chances into early next week. A cold front may move into the coastal waters late Monday or Tuesday.


7 Day Forecast for Marine Location Near Palacios, TX
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location: 28.69, -96.39     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 130442 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 1142 PM CDT Wed Aug 12 2020

AVIATION [06Z TAF Issuance].

VFR conditions will prevail through the period with the possibility of very brief moments of MVFR CIGs around 2000 to 2500 ft towards sunrise. South to southwesterly flow overnight and into the morning, then southeasterly again flow develops tomorrow afternoon.

Fowler

PREV DISCUSSION /Issued 652 PM CDT Wed Aug 12 2020/.

SHORT TERM [Through Thursday Night]. Outflow from earlier storms in northeast Texas may push close, or into, our far northeast parts of the CWA so cannot totally rule out some isolated precip there before sunset. Same type situation in regards to the seabreeze and/or baybreeze closer to the metro area. Anything that does manage to develop shouldn't last much past sunset, but do need to keep an eye for very localized stronger wind gusts for any decent cells that might develop. Otherwise, a forecast of persistence looks tough to beat with the H5 ridge centered to our west pretty firmly in control. Heights look to remain about the same as do the 19-22C h85 temps. Will let the midnight crew take a look at all the peak heat indices observed today and issue another Thurs if need be. Otherwise, just isolated shra/tstm chances at best as PW's are fcst to diminish a touch. 47


Mid to upper level ridge will continue to dominate the local weather across SE Texas through the end of the work week. Low chances of rain remain in the forecast for Friday along with hotter temperatures. Along areas south of I-10 high temperatures will reach the mid to upper 90s and along areas north of I-10 temperatures will reach the mid 90s to low 100s. Heat indicies of 105-110 deg F is also likely across most of SE Texas. The upper level ridge will retreat to the west Saturday in response to an upper level trough moving eastward reaching NE Texas, which could allow for a slight increase in rain chances, but unfortunately ridging in the mid levels is still fairly strong and will not shift much until Sunday. Thus, continue to expect HOT and mostly dry conditions Saturday, with slightly higher rain chances on Sunday. Temperatures and heat indicies are not expected to differ much from Friday's temperature forecast. Those who plan to spend time outdoors or in areas of poor ventilation should continue to take the proper steps to protect themselves and loved ones, including pets, from heat-related illnesses.

During the upcoming week, the weather pattern is expected to shift to a more active one with periods of shower and thunderstorm activity each day. Early in the week, models bring the trough a bit deeper into Texas as the upper ridge heads further into Western CONUS and well out of our region, leading to better chances of rain across the CWA. Moreover, they continue to push a surface cold front into SE Texas sometime Monday into Tuesday and this boundary is to provide additional lift for shower and thunderstorm development. The upper level trough is to continue to dig further south into the Gulf of Mexico mid week which will continue to support an active weather pattern. The good news is that these two features will (hopefully) bring us much needed rain as well as slightly lower overall temperatures, especially for those who are in the locations receiving the most rainfall. Stay tuned! 24

MARINE. Light to moderate winds with seas of 3 feet or less expected over the waters for the next several days. Slightly higher winds of up to around 15 knots can be anticipated during the nighttime hours. Chance of showers and thunderstorms are forecast to increase during the upcoming week in association to a surface cold front. Winds could also turn northerly Tuesday and Wednesday. At this time, winds and seas are expected to remain below Small Craft Advisory threshold. 24

PRELIMINARY POINT TEMPS/POPS.

College Station (CLL) 78 101 78 101 76 / 10 10 0 10 0 Houston (IAH) 79 99 79 98 78 / 20 20 0 20 0 Galveston (GLS) 85 93 85 93 84 / 10 20 0 20 0

HGX WATCHES/WARNINGS/ADVISORIES.

TX . Heat Advisory until 7 PM CDT Friday for the following zones: Austin . Brazoria Islands . Brazos . Burleson . Chambers . Coastal Brazoria . Coastal Galveston . Coastal Harris . Coastal Jackson . Coastal Matagorda . Colorado . Fort Bend . Galveston Island and Bolivar Peninsula . Grimes . Houston . Inland Brazoria . Inland Galveston . Inland Harris . Inland Jackson . Inland Matagorda . Madison . Matagorda Islands . Montgomery . Northern Liberty . Polk . San Jacinto . Southern Liberty . Trinity . Walker . Waller . Washington . Wharton.

GM . None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 12 mi55 min SSW 11 G 14 83°F 1013.8 hPa (-0.8)
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi55 min S 13 G 17 84°F 90°F1013.5 hPa (-1.1)
MBET2 19 mi55 min SSW 16 G 18 85°F 85°F1012.5 hPa (-1.2)
EMAT2 25 mi55 min S 11 G 14 84°F 88°F1013.5 hPa (-0.8)
SDRT2 - 8773037 - Seadrift, TX 26 mi55 min SSE 14 G 19 86°F 87°F1013.7 hPa (-1.1)
AWRT2 39 mi55 min S 12 G 15 84°F 87°F1013.2 hPa (-0.9)
SGNT2 41 mi55 min S 8.9 G 13 85°F 89°F1013.6 hPa (-0.6)

Wind History for Port OConnor, TX
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palacios Municipal Airport, TX8 mi63 minS 1010.00 miPartly Cloudy84°F77°F80%1013.8 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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Last 24hrS7S7S9S9
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--------S5SE4----------------S3SE3S6
1 day agoS7E10S5SE9SE13
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SE12SE14----------------------------SE3SE4S7
2 days agoSE6E8SE9E13SE12SE13E12SE12SE11SE12SE6SE4SE5SE4SE4S4S4S3SE3SE3SE3CalmSE3SE8

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Port Lavaca, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Thu -- 01:40 AM CDT     Moonrise
Thu -- 06:54 AM CDT     Sunrise
Thu -- 09:35 AM CDT     0.80 feet High Tide
Thu -- 03:43 PM CDT     Moonset
Thu -- 08:06 PM CDT     Sunset
Thu -- 11:08 PM CDT     -0.16 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map
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wmap_A
GEOS Local Image of SouthCentralPlains    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 (4,6,7,8)
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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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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.