Saturday, August24, 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 7:00AMSunset 8:00PM Saturday August 24, 2019 6:22 AM CDT (11:22 UTC) Moonrise 12:04AMMoonset 2:01PM Illumination 36% 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-galveston Bay- 547 Am Cdt Sat Aug 24 2019
Today..East 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 chance of showers in the evening. Scattered Thunderstorms. Showers likely after midnight.
Sunday..South winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. Scattered Thunderstorms until late afternoon. A chance of showers. A slight chance of Thunderstorms late in the afternoon.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
Monday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Monday night..South winds 15 to 20 knots. Bay waters choppy.
Tuesday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
Tuesday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday..South 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 morning, then a chance of showers and Thunderstorms in the afternoon.
Wednesday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms after midnight.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 547 Am Cdt Sat Aug 24 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Showers and Thunderstorms will continue in the offshore waters of the upper texas coast this morning and continue through the day. Generally light to moderate onshore winds will prevail the next few days. Gusty and erratic winds may form near Thunderstorms that do develop. Shower activity decreases by the end of the weekend and into next week as high pressure builds 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 241120
afdcrp
area forecast discussion
national weather service corpus christi tx
620 am cdt Sat aug 24 2019

Discussion
Updated for 12z aviation discussion.

Aviation
GenerallyVFR conditions for the period. Reduced visibilities are
possible this morning, but these are expected to stayVFR. There
is a potential for isolated to scattered showers and thunderstorms
this afternoon and evening which could contribute to some MVFR
ceilings and perhaps lowered visibilities. Vcsh and tsra are
mentioned at all sites in the afternoon with the exception of ali,
as moisture moves in from both the gulf waters and from the west.

Gusty winds are possible in and around thunderstorms.

Prev discussion issued 410 am cdt Sat aug 24 2019
short term (today through Sunday)...

tropical moisture continues to move into the area under an upper
level disturbance. While the majority of the moisture continues
north and stays over the gulf waters, enough will move over the area
to keep at least a slight chance of showers and thunderstorms
possible through the morning. Isolated showers have already begun to
develop over the waters and move over the coastal bend. These will
likely diminish by mid-morning with a better chance for more
widespread showers and thunderstorms later in the afternoon as the
seabreeze moves though. With pwats over 2 inches for much of the
area, any showers or thunderstorms that do form could produce
locally heavy rainfall and gusty winds.

Moisture continues to stream in from the west, with a 700mb vort max
just to our west which should provide enough support for at least
some isolated to scattered showers this afternoon and evening. With
this in mind, have increased pops to near 40 percent over the
western most counties.

Temperatures will remain near normal, with heat index values peaking
from 105 to 109. By Sunday, the cloud cover will diminish somewhat,
and we will return to slightly warmer than normal temperatures and
again flirt with heat advisory criteria.

Long term (Sunday night through Friday)...

the mid-level ridge will begin to move in from the west Sunday night
which should help subside shower storm activity through the week.

However, will maintain slight rain chances across the brush country
Sunday evening as a h7 trough sinks south across the region. Rain
activity should be shifted farther east and south for the rest of
the week with isolated showers storms possible on and off across the
gulf waters where pwats between 1.5 to 1.9 inches are expected. The
best chances for showers storms to occur are during the overnight
and morning hours. Isolated activity will be possible inland, but
should be very sporadic as h85 temperatures continue to run warm,
further hindering activity. Most, if any, showers storms develop
inland, it should be along the sea breeze.

Kept rather persistent with temperatures with highs near 90 degrees
along the immediate coast, warming to the mid to upper 90s near and
west of highway 77, with highs up to 105 across the western brush
country. Heat indices over 105 degrees are expected daily for most
locations, with heat advisories likely to return for at least the
southern coastal bend Monday through Thursday as values are expected
to reach between 110-115 degrees. Warm and muggy nights will be in
store through the week with lows in the mid upper 70s to lower 80s.

Marine...

weak to moderate onshore flow is expected through the week, with a
more moderate flow reaching scec levels expected during the
afternoon and overnight hours Monday and Monday night. Lingering
moisture across the region will maintain isolated rain chances daily
through the week.

Preliminary point temps pops
Corpus christi 94 79 96 79 97 30 20 40 10 10
victoria 95 78 96 78 97 40 30 40 10 20
laredo 102 80 101 80 105 20 40 30 20 10
alice 99 78 100 78 103 30 20 40 10 10
rockport 92 81 92 83 91 40 30 40 20 20
cotulla 101 79 101 80 105 20 40 30 20 10
kingsville 97 79 99 79 101 30 20 30 10 10
navy corpus 88 82 92 83 92 40 30 40 10 10

Crp watches warnings advisories
Tx... None.

Gm... None.

Ls 77... Aviation


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 0 mi59 min SW 1.9 G 4.1 80°F 87°F1012 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi59 min WNW 4.1 G 8 82°F 88°F1011.5 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi59 min WSW 17 G 22 81°F 87°F1012.1 hPa
MBET2 21 mi53 min W 9.9 G 11 82°F 1010.4 hPa
AWRT2 30 mi59 min W 1.9 G 5.1 81°F 86°F1011.9 hPa
EMAT2 37 mi53 min NW 5.1 G 7 77°F 87°F1011.5 hPa
RCPT2 - 8774770 - Rockport, TX 49 mi59 min 84°F 1011.4 hPa

Wind History for Port OConnor, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Lavaca - Calhoun County Airport, TX4 mi28 minN 07.00 miPartly Cloudy81°F78°F94%1012.2 hPa
Palacios Municipal Airport, TX19 mi30 minNW 310.00 miA Few Clouds80°F72°F76%1012 hPa
Victoria, Victoria Regional Airport, TX23 mi32 minN 08.00 miFair77°F73°F90%1012.1 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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Last 24hrS3CalmCalmCalmCalmCalmE3E3SE10E13
G17
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E10SE8S6----SE3--S3SW3W3CalmSE3
1 day agoCalmCalmS3SE3SE6SE7CalmE6SE11
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SE13SE11SE8--SE6SE3SE4--SE3CalmCalm
2 days ago----S3S9S9E5N11S6SE13
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SE11SE9SE7SE7--SE5CalmS4SE4SE3Calm

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 Seadrift, San Antonio Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
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wmap_A
GOES 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 Corpus Christi, TX (7,2,3,4)
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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.