Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Port Lavaca, TX

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:31AMSunset 8:31PM Wednesday June 28, 2017 12:12 AM CDT (05:12 UTC) Moonrise 10:22AMMoonset 11:24PM Illumination 17% Phase: Waxing Crescent; Moon at 4 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- 336 Pm Cdt Tue Jun 27 2017
Tonight..East winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight. A chance of showers and Thunderstorms.
Wednesday..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Wednesday night..Southeast winds 5 to 10 knots becoming south after midnight. Bay waters smooth. A chance of showers and Thunderstorms.
Thursday..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Thursday night..South winds around 15 knots. Bay waters slightly choppy to choppy. A chance of showers and Thunderstorms in the evening, then a slight chance of showers and Thunderstorms after midnight.
Friday..South winds around 15 knots. Bay waters slightly choppy to choppy. A chance of showers and Thunderstorms.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Saturday..South winds 10 to 15 knots. Bay waters slightly choppy.
Saturday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Sunday..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Sunday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 336 Pm Cdt Tue Jun 27 2017
Synopsis for high island to matagorda ship channel out 60 nm.. A developing coastal trough will tighten the pressure gradient and onshore winds are expected strengthen through tonight. Tide levels will also likely increase and some minor coastal flooding will be possible.

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 280018 aaa
afdcrp
area forecast discussion... Updated
national weather service corpus christi tx
718 pm cdt Tue jun 27 2017

Discussion
See aviation below for 00z TAF update.

Aviation
Vfr prevails with showers waning in coverage across the region.

Anticipate lowering CIGS to develop, bringing MVFR during the
morning hours before a return toVFR by the late morning early
afternoon. More scattered showers will develop across the region
Wednesday morning, remaining within the vicinity of ali crp vct
through the afternoon. Winds will be light through the period,
shifting between a northeast to easterly flow.

Previous discussion issued 343 pm cdt Tue jun 27 2017
short term (tonight through Wednesday night)...

scattered showers with a few embedded thunderstorms continue across
south texas. A coastal trough along the southern texas coast remains
with noticeable counter-clockwise rotation over the area. Things
have stabilized along the coast but isolated convection will remain
possible. Moderate to heavy downpours is expected with the
showers storms as pwats remain just over 2 inches. Slower movement
and training showers earlier this morning easily led to localized
flooding however this afternoon, movement appears to be much faster
with little training. Once again, activity is expected to wane
through the evening hours with the loss of heating. Showers and
thunderstorms are again expected to redevelop or continue across the
gulf waters overnight from the combination of deep tropical
moisture, a lingering surface coastal trough, and a broad mid level
low aloft also draped along the texas coast. The drying is expected
to move in from the north-northwest from the mid level trough, with
the bulk of the moisture focused across the gulf waters and coastal
plains. Continued to keep highest pops across the far eastern areas
tonight through Wednesday night. As the moisture is shunted farther
east, did have a warming trend across the inland plains and brush
country.

Long term (Thursday through Tuesday)...

the shear axis responsible for the showers and storms the last
few days will remain along the coast on Thursday. Coupled with pw
values between 1.8 and 2.0 inches, chances for showers and storms
will continue on Thursday. Highest chances will be over the gulf
waters tapering off to 20 percent over the brush country. Brief
heavy rains will be main hazards from these storms. The shear axis
weakens on Friday but a few showers and storms will still be
possible. Rain chances will end by Saturday as upper ridge builds
over the area. Dry conditions will then persist into early next
week. Temperatures through the extended will gradually warm with
highs in the low 100s over the brush country and rio grande to mid
90s over the victoria crossroads by early next week. Heat index
values will also be between 105 and 109 each day and will likely
need spss to address the heat.

Preliminary point temps pops
Corpus christi 75 91 76 93 79 20 40 20 30 20
victoria 73 90 75 94 78 30 40 20 30 20
laredo 74 96 76 101 79 30 10 10 10 10
alice 72 94 74 97 76 20 30 20 20 10
rockport 77 89 79 92 82 30 40 30 30 20
cotulla 73 95 75 101 77 30 10 10 10 10
kingsville 73 93 75 96 78 20 30 20 30 10
navy corpus 78 90 80 93 83 30 40 30 30 20

Crp watches warnings advisories
Tx... None.

Gm... None.

Lb 84... Aviation


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 0 mi43 min ENE 8.9 G 9.9 77°F 83°F1013.1 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi43 min ENE 4.1 G 6 78°F 84°F1013.2 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi43 min E 16 G 20 80°F 1012.7 hPa
MBET2 21 mi43 min ESE 14 G 17 80°F
AWRT2 30 mi43 min E 11 G 14 81°F 83°F1012.9 hPa
EMAT2 37 mi43 min E 14 G 18 81°F 83°F1012.5 hPa
MAXT2 - Mission-Aransas Reserve, TX 42 mi73 min E 9.9
CPNT2 43 mi127 min NE 8.9 G 11 80°F 85°F
RCPT2 - 8774770 - Rockport, TX 49 mi43 min ESE 2.9 G 8 82°F 85°F1012.4 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 mi18 minN 010.00 miFair76°F75°F98%1013.2 hPa
Palacios Municipal Airport, TX19 mi20 minESE 710.00 miFair75°F73°F96%1013 hPa
Victoria, Victoria Regional Airport, TX23 mi22 minNNE 410.00 miFair74°F72°F94%1013.4 hPa

Wind History from PKV (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE7
G16
SE5CalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmNE5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE9
G16
Calm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE7
G16
CalmCalmCalmCalmE14
G18
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SE3CalmCalmCalmCalmCalm

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Wed -- 06:20 AM CDT     -0.06 feet Low Tide
Wed -- 06:31 AM CDT     Sunrise
Wed -- 11:22 AM CDT     Moonrise
Wed -- 04:27 PM CDT     0.94 feet High Tide
Wed -- 08:28 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.50.30.20.1-0-0.1-000.10.30.50.60.70.80.90.90.90.90.90.80.80.80.7

Tide / Current Tables for Seadrift, San Antonio Bay, Texas
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Seadrift
Click for Map
Wed -- 06:32 AM CDT     Sunrise
Wed -- 09:15 AM CDT     0.05 feet Low Tide
Wed -- 11:22 AM CDT     Moonrise
Wed -- 07:01 PM CDT     0.28 feet High Tide
Wed -- 08:25 PM CDT     0.28 feet Low Tide
Wed -- 08:28 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.30.30.20.20.10.10.100.10.10.10.20.20.20.20.30.30.30.30.30.30.3

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Corpus Christi, TX (1,6,7,8)
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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.