Sunday, August25, 2019 L-36.com


Marine Weather and Tides
Port Lavaca, TX

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:01AMSunset 7:59PM Sunday August 25, 2019 11:14 AM CDT (16:14 UTC) Moonrise 12:51AMMoonset 3:01PM Illumination 24% Phase: Waning Crescent; Moon at 25 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-galveston Bay- 1025 Am Cdt Sun Aug 25 2019
Rest of today..Southwest winds 5 to 10 knots becoming south 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. Scattered Thunderstorms and a chance of showers.
Tonight..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers late in the evening. A chance of showers after midnight. Isolated Thunderstorms late.
Monday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and isolated Thunderstorms in the morning.
Monday night..South winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. Bay waters choppy becoming slightly choppy after midnight.
Tuesday..South winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms in the afternoon.
Wednesday night..South winds 5 to 10 knots becoming southwest after midnight. Bay waters smooth.
Thursday..South winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A chance of showers and Thunderstorms in the morning, then a slight chance of showers and Thunderstorms in the afternoon.
Thursday night..Southeast winds 5 to 10 knots. Bay waters smooth.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1025 Am Cdt Sun Aug 25 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Showers and storms will be occur across the upper texas coastal waters today. A weak daytime to overnight moderate onshore wind will persist over the next couple of days, producing relatively lower seas and smooth to slightly choppy bay conditions. Precipitation chances decrease by mid week as high pressure begins to build into the region.


7 Day Forecast for Marine Location Near Port Lavaca, TX
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location: 28.64, -96.6     debug


Area Discussion for - Corpus Christi, TX
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Fxus64 kcrp 251105
afdcrp
area forecast discussion
national weather service corpus christi tx
605 am cdt Sun aug 25 2019

Discussion
Updated for 12z aviation discussion.

Aviation
Low dewpoint depressions and light winds will contribute to some
MVFR ceilings and visibilities this morning, particularly at ali
and vct. Otherwise, expectVFR conditions under partly to mostly
cloudy skies. Some diurnally driven isolated to scattered showers
and thunderstorms are expected this afternoon, so mentioned tsra in
crp, ali, and vct. Gusty winds and MVFR ceilings and visibilities
are possible in and around thunderstorms.

Prev discussion issued 422 am cdt Sun aug 25 2019
short term...

few changes were needed to the forecast for today, with only
small changes expected. Models continue to indicate the majority
of the gulf convection northeast along the upper texas coast, but
there will still be enough mid-level moisture and lift along the
coastal bend to produce some diurnally driven precipitation. Pwats
are expected to remain from 2 to 2.3 inches over the area through
Monday. This could result in some locally heavy rainfall in any
thunderstorms that develop. Continued the lower pops to the west
as the subsidence aloft near the rio grande valley should inhibit
any thunderstorm development.

Temperatures appear a bit warmer today with highs in the mid 90s to
near 100 degrees across the area. Heat advisory criteria looks like
it will be met over the southern coastal plains coastal bend this
afternoon; however, any shower or thunderstorm activity in the
afternoon could keep some locations below the criteria. Monday also
looks like it may meet the criteria as well, with lower pops and
slightly warmer temperatures expected.

Long term (Monday night through Saturday)...

drier conditions are expected Monday and Tuesday as the mid-level
ridge builds in from the west. A weak inverted trough will move into
the western gulf for the latter half of the week, returning isolated
showers and thunderstorms across the gulf waters and into the
coastal plains. With warm h85 temperatures, afternoon temperatures
are expected to once again warm to above season normals, with highs
in the lower 90s near the coast to near 104 degrees across the
western brush country. Heat index values are expected to reach above
105 degrees for much of the week, with heat advisories likely Monday
through Wednesday across the southern coastal bend, with slightly
larger coverage into the brush country on Monday. Models are hinting
at a backdoor front to sink in from the northeast late in the week
into the weekend as surface high pressure builds in across the
eastern us. This should help temperatures "cool" by a few degrees
with heat index values falling below 105 degrees by the weekend.

Marine...

weak to moderate onshore flow will persist through tonight as
isolated to scattered showers and thunderstorms continue. Drier
conditions are expected Monday and Tuesday. Isolated showers and
thunderstorms return for the latter half of the week as a weak
disturbance moves into the western gulf. Moderate onshore flow is
expected Monday and Monday night reaching small craft exercise
caution levels. Otherwise, weak to moderate onshore flow will
persist through the end of the week.

Preliminary point temps pops
Corpus christi 96 80 95 80 96 40 10 10 0 10
victoria 97 79 97 78 98 30 10 10 0 10
laredo 102 80 105 81 105 30 20 10 0 0
alice 100 79 103 78 103 40 10 10 0 10
rockport 91 82 90 84 92 30 10 10 0 10
cotulla 102 80 104 80 105 30 10 10 0 0
kingsville 99 80 101 79 100 30 10 10 0 10
navy corpus 90 82 92 83 93 30 10 10 10 10

Crp watches warnings advisories
Tx... Heat advisory from 1 pm this afternoon to 7 pm cdt this evening
for the following zones: coastal kleberg... Coastal nueces...

coastal san patricio... Inland kleberg... Inland nueces...

inland san patricio... Jim wells... Kleberg islands.

Gm... None.

Ls 77... Aviation


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 0 mi62 min SSW 8.9 G 11 86°F 86°F1011.5 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi62 min SSW 11 G 14 85°F 87°F1011.2 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi62 min S 9.9 G 12 86°F 85°F1011.6 hPa
MBET2 21 mi80 min SW 9.9 G 12 85°F 1010.5 hPa
AWRT2 30 mi62 min SSW 9.9 G 12 85°F 86°F1011.6 hPa
EMAT2 37 mi56 min S 2.9 G 4.1 85°F 87°F1011.4 hPa
RCPT2 - 8774770 - Rockport, TX 49 mi62 min 86°F 1011.5 hPa

Wind History for Seadrift, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Lavaca - Calhoun County Airport, TX4 mi19 minSW 710.00 miPartly Cloudy85°F77°F79%1012.2 hPa
Palacios Municipal Airport, TX19 mi21 minSSW 73.00 miRain88°F79°F75%1011.8 hPa
Victoria, Victoria Regional Airport, TX23 mi23 minSSW 1010.00 miMostly Cloudy92°F73°F54%1011.7 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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Last 24hrE4CalmSE15SE12
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SE11S11SE8S9S4S3--S4------S3--SE3SE3CalmS5SW7SW8
1 day agoCalmE3E3SE10E13
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E10SE8S6----SE3--S3SW3W3CalmSE3CalmCalmCalmN4NE7
2 days agoSE7CalmE6SE11
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SE13SE11SE8--SE6SE3SE4--SE3CalmCalmS3CalmCalmCalmCalm

Tide / Current Tables for Port Lavaca, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Sun -- 01:51 AM CDT     Moonrise
Sun -- 07:00 AM CDT     Sunrise
Sun -- 09:52 AM CDT     1.04 feet High Tide
Sun -- 04:01 PM CDT     Moonset
Sun -- 07:55 PM CDT     Sunset
Sun -- 11:14 PM CDT     -0.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.10.30.40.50.70.80.9111110.90.80.70.60.50.40.20.1-0-0.1-0.1

Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Sun -- 01:50 AM CDT     Moonrise
Sun -- 07:00 AM CDT     Sunrise
Sun -- 08:11 AM CDT     0.90 feet High Tide
Sun -- 03:59 PM CDT     Moonset
Sun -- 07:54 PM CDT     Sunset
Sun -- 08:46 PM CDT     -0.11 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.30.40.60.70.80.80.90.90.90.90.80.70.60.50.30.20.10-0.1-0.1-0.1-0.1-0

Weather Map and Satellite Images
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wmap_A
GOES 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 Corpus Christi, TX (12,3,4,5)
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Ground Weather Radar Station Corpus Christi, TX
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weather_mapweather_map weather_map

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 numerious 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.