Tuesday, October27, 2020
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Marine Weather and Tides
Palacios, TX

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:32AMSunset 6:43PM Tuesday October 27, 2020 10:37 AM CDT (15:37 UTC) Moonrise 4:03PMMoonset 3:04AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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- 359 Am Cdt Tue Oct 27 2020
Rest of today..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers late in the morning. A chance of showers in the afternoon.
Tonight..North winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers early in the evening, then a slight chance of showers late in the evening. A chance of showers after midnight.
Wednesday..Northwest winds 10 to 15 knots increasing to 20 to 25 knots in the afternoon. Bay waters slightly choppy becoming rough in the afternoon. A chance of showers in the morning. Isolated Thunderstorms. A slight chance of showers in the afternoon.
Wednesday night..Northwest winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. Bay waters choppy becoming slightly choppy after midnight.
Thursday..Northwest winds 10 to 15 knots. Bay waters slightly choppy.
Thursday night..North winds 15 to 20 knots. Bay waters choppy.
Friday..North winds 10 to 15 knots. Bay waters slightly choppy.
Friday night..Northeast winds 5 to 10 knots. Bay waters smooth.
Saturday..Northeast winds 5 to 10 knots becoming around 5 knots in the afternoon. Bay waters smooth.
Saturday night..East winds around 5 knots becoming northeast after midnight. Bay waters smooth.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 359 Am Cdt Tue Oct 27 2020
Synopsis for high island to matagorda ship channel out 60 nm.. East to northeast winds are expected today as a cold front moves through the waters. Winds should become northwesterly on Wednesday as hurricane zeta heads toward the central gulf coast and the aforementioned cold front continues to move off the coast. Increasing winds of 25 knots or higher and seas up to around 10 ft can be expected both due to zeta, and the passage of the front. North to northwest winds can be expected from Wednesday afternoon through the end of the week. Look for gradually lowering seas toward the end of the week. Mariners should continue to Monitor the progress of zeta, particularly for those venturing far offshore or eastward to louisiana.


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 271108 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 608 AM CDT Tue Oct 27 2020

AVIATION. IFR and some LIFR conditions with low cigs, fog, -dz across the region early this morning with a shallow frontal boundary is located from roughly 20NM south of Matagorda to San Luis Pass to Anahuac. It should meander in this general vicinity for the next 24 hours or so. Aviation conditions right near the front will vary with its position . and unfortunately this impacts most of the metro airports. In general, the 12z set of TAFs will be more pessimistic than the previous as the front is a bit further se of earlier guidance. Will indicate some improvement to MVFR this afternoon . but confidence is very low - it could just as easily remain status quo or even go VFR for a while should the eastern periphery temporarily modify for a while with heating. Further north of the metro, steep saturated frontal inversion should keep poor conditions in place for the next 24+ hours. Moist flow over the cooler air will produce sct pockets of light precip at times, but chose not to over-complicate TAFs w/ the mention considering already low cigs in place. Same type pattern expected tonight, though should see increasing rain chances from the west late tonight and into Wed as an upper level trof edges closer to the region. 47

PREV DISCUSSION. /ISSUED 433 AM CDT Tue Oct 27 2020/ SHORT TERM [Through Wednesday night] . At 4 am . surface analysis, radar and satellite indicate a shallow frontal boundary situated from roughly 20NM south of Matagorda Bay to Freeport to League City to Liberty -- a touch further south and east than most models indicate. It will likely meander in that same general area today and tonight with the upper level trough lagging well to the west. There is currently almost a 20 degree temp difference between extreme nw parts of Harris Co and the se parts close to the Galveston Bay. There will be without a doubt some noticeable forecast temperature busts with the subtle geographic frontal fluctuations. Moist southerly flow overrunning the cooler airmass should keep clouds and in place and limit much of a warm-up north and west of the boundary. Iso/sct pockets of precip can be expected at times as that same llvl flow brings a gradual increase in PW values from the Gulf throughout the day.

TS Zeta over the Yucatan will be moving into the open waters of the Gulf today and restrengthen back into a hurricane. Anticipate it to eventually increase in forward speed and maintain about the same track that has been advertised (nw track into the wcntl Gulf late Tue night . taking a north then ne turn and making landfall near the southeast La coast late Wed). Confidence is fairly high that the main impacts along the upper Texas coast will be marine hazards.

We'll probably see some periods of rainfall Wed as the upper trof to the west approaches and large scale lift increases. Can't rule out a few tstms. We should become dry slotted late Wed and Wed night. Skies will clear from the west, chances of precip will come to an end, and deeper column of dry/cool air will finally push thru all of the CWA with breezy nw winds. 47

LONG TERM [Thursday through Monday Night] . The main weather concern in the extended is breezy to windy conditions Thursday and a warming trend into next week.

A closed upper low currently over the Desert Southwest will move north of the area on Thursday, leaving our region over a tight pressure gradient. It will be a windy day with continuing cold air advection behind the departing front and increasing pressure gradient as the aforementioned closed low moves into the Lower MS Valley. Momentum transfer within forecast soundings suggests the potential for wind gusts around 25+ kts near the top of the mixed layer. Therefore, have raised winds above the National Blend to produce gusts around 15 to 25 knots (inland). Will likely need a wind headline for Thursday as time approaches. Cooler conditions are also expected as temperatures range around 10 degrees below average. Daytime highs will mainly be in the 60s. Coldest readings are expected across our far northwestern counties.

Dry zonal flow aloft turns to the northwest Friday into the weekend as a ridge of high pressure builds in over the southern Plains. This will result in drier conditions with a gradual warming trend through the upcoming week. Highs temperatures will mainly range in the 70s. Overnight lows from the upper 40s far inland to upper 60s along the coast. 05

MARINE . Moderate east to northeast winds are expected today as a cold front slowly moves through the waters. Gusts of 15 to 20 knots will be possible at times. The main period of impactful weather will be Wednesday through Thursday as the front continues to push through and Tropical Storm Zeta approaches the northern Gulf Coast. The combination of a passing front, Zeta and thermal gradient over the waters will produce strong winds. Winds as high as 25-30 knots will be possible offshore. Additionally, elevated tides and seas from 5 to 10 ft are possible through Thursday night. Marine conditions will gradually improve late Thursday night as a high pressure builds in and dominates weather conditions into the weekend. 05

PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 54 46 60 43 64 / 30 50 60 10 0 Houston (IAH) 73 62 74 49 66 / 20 50 60 10 10 Galveston (GLS) 76 72 76 55 69 / 20 40 60 10 10

HGX WATCHES/WARNINGS/ADVISORIES. TX . NONE. GM . NONE.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 12 mi50 min NNE 13 G 19 54°F 68°F
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi50 min N 17 G 21 57°F 74°F
MBET2 19 mi50 min NNE 17 G 19 57°F
EMAT2 25 mi50 min NNW 14 G 17 57°F 70°F
SDRT2 - 8773037 - Seadrift, TX 26 mi50 min N 11 G 16 53°F 72°F
AWRT2 39 mi50 min N 12 G 17 55°F 73°F
SGNT2 41 mi50 min N 8.9 G 12 63°F 75°F
KBQX 48 mi23 min N 20 70°F 68°F

Wind History for Port OConnor, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palacios Municipal Airport, TX8 mi46 minN 146.00 miFog/Mist54°F53°F97%1015.5 hPa
Port Lavaca - Calhoun County Airport, TX16 mi43 minN 14 G 225.00 miFog/Mist54°F50°F88%1015.2 hPa

Link to 5 minute data for KPSX

Wind History from PSX (wind in knots)
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SE14SE13E9----E11N13N14N14N14N15N13N14N12--N17N15
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1 day agoE3S6S9SE11SE12SE11SE14SE12SE11SE10SE10SE12SE11SE12SE9SE10SE11SE11SE10SE10SE12E8--SE14
2 days agoN15N13N14N11N10NW9N6N6NE4NE3E3NE4NE3--NE4NE4E3NE3NE3--E4E4E4E6

Tide / Current Tables for Port Lavaca, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Tue -- 12:33 AM CDT     0.77 feet Low Tide
Tue -- 04:04 AM CDT     Moonset
Tue -- 07:35 AM CDT     Sunrise
Tue -- 08:36 AM CDT     1.27 feet High Tide
Tue -- 02:16 PM CDT     1.11 feet Low Tide
Tue -- 05:03 PM CDT     Moonrise
Tue -- 06:34 PM CDT     1.18 feet High Tide
Tue -- 06:44 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.80.80.911.11.21.21.31.31.21.21.21.11.11.11.11.21.21.21.21.11.11

Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Tue -- 04:04 AM CDT     Moonset
Tue -- 06:19 AM CDT     1.16 feet High Tide
Tue -- 07:34 AM CDT     Sunrise
Tue -- 11:55 AM CDT     1.04 feet Low Tide
Tue -- 03:38 PM CDT     1.07 feet High Tide
Tue -- 05:02 PM CDT     Moonrise
Tue -- 06:44 PM CDT     Sunset
Tue -- 11:07 PM CDT     0.77 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.80.911.11.11.21.21.11.11.11111.11.11.11.1110.90.80.80.8

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
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.