Sunday, March29, 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 7:14AMSunset 7:41PM Sunday March 29, 2020 12:55 AM CDT (05:55 UTC) Moonrise 9:35AMMoonset 11:33PM Illumination 26% Phase: Waxing Crescent; Moon at 5 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- 1009 Pm Cdt Sat Mar 28 2020
Rest of tonight..Northeast winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight.
Sunday..Northeast winds 10 to 15 knots becoming east in the afternoon and increasing to near 15 knots in the late afternoon. Bay waters slightly choppy. Isolated showers late in the afternoon.
Sunday night..East winds 10 to 15 knots. Bay waters slightly choppy.
Monday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and isolated Thunderstorms.
Monday night..South winds around 10 knots becoming southwest after midnight. Bay waters smooth to slightly choppy becoming smooth after midnight.
Tuesday..Northwest winds 5 to 10 knots becoming north in the afternoon. Bay waters smooth becoming smooth to slightly choppy in the afternoon.
Tuesday night..North winds 5 to 10 knots. Bay waters smooth.
Wednesday..Northeast winds around 10 knots becoming east in the afternoon. Bay waters smooth to slightly choppy.
Wednesday night..East winds 5 to 10 knots. Bay waters smooth.
Thursday..East winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. A slight chance of showers and Thunderstorms in the afternoon.
Thursday night..East winds 5 to 10 knots. Bay waters smooth. 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 1009 Pm Cdt Sat Mar 28 2020
Synopsis for high island to matagorda ship channel out 60 nm.. A cold over the nearshore waters will continue to push south this evening with gusty north winds becoming northeast in early morning hours. Onshore flow will return Sunday night and Monday as high pressure moves off to the east. Another cold front is currently expected to move off the coast sometime on 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 290450 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 1150 PM CDT Sat Mar 28 2020

AVIATION [06Z TAF issuance].

Last few lingering showers should dissipate within the next couple of hours, giving way to a calm and fairly clear night across the region. Light and variable winds will persist overnight at all terminals, aside from GLS which should retain wind speeds of around 10 knots with some gusts possible. In the wake of today's frontal passage, expect a development of northeast and later east winds as the day progresses tomorrow with surface high pressure settling into the area. Cig and visibility look to hold within VFR thresholds throughout the TAF period.

PREV DISCUSSION . /ISSUED 405 PM CDT Sat Mar 28 2020/

SHORT TERM (Tonight through Sunday) .

The cold front is continuing to slowly make its way across the CWA this afternoon, with only some weak showers associated with it. The stronger activity looks to be just north of the area and may only affect our far northern counties (i.e. Madison, Houston, Trinity) based on the current trends. Otherwise, we'll be keeping with the previous timeline with regards to FROPA as this boundary moves off the coast between 4-6PM CDT.

Slightly cooler/drier air will be filtering into the region tonight as the surface high builds down from the Plains. Low tonight should range from the lower 50s over the northern parts of the CWA to the lower 60s over the southern half. Low temperatures along the immediate coast are going to be near mid 60s. The lower humidities/mostly clear skies will be sticking around tomorrow as the surface high edges slowly east with time. Highs tomorrow are expected to be in the upper 70s/lower 80s for much of SE TX. Some low rain chances could return as early as tomorrow night as the boundary moves back onshore as a warm front. But for now, this scenario looks more likely to occur on Mon. 41

LONG TERM (Sunday night through Saturday) .

The period begins with the inland advance of a coastal warm front through the day Monday. As the lower level column begins to saturate back up, there will be an increased chance for early Monday under-the-cap showers. Rainfall probabilities significantly increase from late (Monday) morning through early afternoon with the forcing of the warm front primarily producing widely-scattered showers and with embedded, isolated thunderstorms. Unfortunately, overall low 24 hour QPF of under a quarter of an inch which will do little to slow this current cool season drought. The passage of a near-eastern tracking shortwave trough across Oklahoma will pull down a front along its backside early Tuesday. This will allow a northern dry air mass to descend over the region and this air mass will remain in place through mid week. Monday's overcast and scattered precipitation will keep diurnal extremes in the more humid morning lower to middle 60s with the afternoon still warming up into the lower 80s under a warm air advection regime. Tuesday through Thursday's weather will be drier from both a precipitation and humidity stand point. Mid week clearing skies and weak offshore winds will have the waning days of March warming back into the lower to middle 80s (it is not foolish to believe that Wednesday's high temperatures may reach the upper 80s over the SW'ern CWA) Mornings will be more comfortable. middle 50s to lower 60s per the resident dry air mass.

Mid week upper level transitory ridging gives way to late week somewhat shallow shortwave trough passages along with periods of weak PVA moving up within the southwesterly mid layer steering flow. Increasing moisture and thickening late week cloud cover will regulate daytime warming to the middle to upper 70s by week's close. While the models are having a difficult time agreeing with the late period pattern, they do both show a Friday or Saturday passage of a relatively deeper shortwave trough. The southern branch of the jet is forecast to come across the state with a fairly progressive Friday cold frontal passage spiking next Friday through early Saturday's rain and thunderstorm threat. Timing may be off, but it does appear that southeastern Texas will receive a decent bout of weather during the first few days of April. 31

MARINE .

The latest cold front is still expected to move off the coast late this afternoon with only isolated showers possible with it passage. Generally light N/NW winds to develop tonight with high pressure building down into the region. As the high moves slowly east, winds across the marine waters will also be shifting to the east tomorrow afternoon. The return of the front as a warm front on Mon will also mean the return of light/ moderate onshore winds and isolated SHRAs over the bays/coastal waters. Models remain on track with the passage of the next cold front on Tues. We could see a bit more activity with the passage of this system, along with light/moderate offshore winds in place through early Weds morning SE winds set to return Weds night. slowly strengthening Thur/Fri along with the return of some unsettled weather. At this time, not anticipating any Advisory or Caution flags through the next several days. 41

PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 78 51 79 64 79 / 70 0 10 20 80 Houston (IAH) 83 54 82 66 81 / 70 40 10 20 50 Galveston (GLS) 80 65 78 72 79 / 20 30 10 20 20

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 mi56 min NE 7 G 8.9 71°F 74°F1015.1 hPa (+1.4)
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi62 min 71°F 73°F1014.9 hPa
MBET2 19 mi56 min E 8.9 G 11 71°F 74°F1014 hPa (+1.6)
EMAT2 25 mi56 min NNE 2.9 G 4.1 66°F 75°F1015.1 hPa (+2.1)
SDRT2 - 8773037 - Seadrift, TX 26 mi56 min NNE 5.1 G 7 67°F 76°F1015.3 hPa (+1.7)
AWRT2 39 mi62 min NE 11 G 13 71°F 76°F1014.5 hPa
SGNT2 41 mi56 min NNE 4.1 G 5.1 68°F 79°F1015 hPa (+1.5)

Wind History for Port OConnor, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palacios Municipal Airport, TX8 mi63 minNE 310.00 miOvercast67°F53°F61%1015.3 hPa
Port Lavaca - Calhoun County Airport, TX16 mi61 minNE 610.00 miOvercast72°F53°F52%1015.6 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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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
Sun -- 05:33 AM CDT     0.12 feet Low Tide
Sun -- 07:19 AM CDT     Sunrise
Sun -- 10:35 AM CDT     Moonrise
Sun -- 05:09 PM CDT     1.00 feet High Tide
Sun -- 07:43 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.40.30.20.20.10.10.20.20.30.50.60.70.80.9111110.90.90.80.7

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 (1,6,7,8)
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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.