Sunday, June24, 2018 L-36.com


Marine Weather and Tides
Port Lavaca, TX

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:30AMSunset 8:31PM Sunday June 24, 2018 12:22 AM CDT (05:22 UTC) Moonrise 4:31PMMoonset 3:03AM Illumination 82% 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-galveston Bay- 940 Pm Cdt Sat Jun 23 2018
.small craft should exercise caution...
Rest of tonight..South winds 15 to 20 knots. Bay waters choppy.
Sunday..South winds 10 to 15 knots. Bay waters slightly choppy.
Sunday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Monday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
Monday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday..Southeast 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 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.
Wednesday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Thursday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and isolated Thunderstorms.
Thursday night..South 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 940 Pm Cdt Sat Jun 23 2018
Synopsis for high island to matagorda ship channel out 60 nm.. Elevated onshore winds will persist through the weekend with high pressure to the east and lower pressure over west texas. Wind and seas are expected to come down a little, especially toward the middle to end of the upcoming week, as the high pressure edges closer to the area.

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 232350 aaa
afdcrp
area forecast discussion... Updated
national weather service corpus christi tx
650 pm cdt Sat jun 23 2018

Discussion
Updated for 00z aviation.

Aviation
Winds will remain elevated into the evening hours with gusts
above 20 knots at times. Low clouds with MVFR ceilings will
eventually settle in across south texas. The low clouds should mix
out mid to late morning withVFR conditions thereafter. Southerly
winds will increase once again Sunday morning with winds becoming
more southeasterly as the sea breeze moves inland. Gusts between
25 and 30 knots will be common during the afternoon.

Previous discussion issued 401 pm cdt Sat jun 23 2018
short term (tonight through Sunday night)...

updated npw to add webb county to the heat advisory and will
retain the 00z Sunday expiration. Anticipate at least 105-109f
maximum heat index values over the CWA Sunday. Expect the CWA msa
to remain under the influence of the e-w upper ridge tonight.

However, the upper inverted trough (currently depicted over the
swrn gulf bay of campeche region and with convection east of the
n-s axis) is expected to continue to move wwd and provide a
significant influence by Sunday night. GFS ensemble mean places
the upper trough axis near the coast by 06z Monday. Based on the
anticipated trough axis position timing and associted moisture
increase, decided not to add convection to the msa until 00z
Monday and not over the CWA until 06z Monday. Deepening low
pressure over the WRN tx will maintain onshore flow. Expect at
least scec conditions over the coastal msa during the period when
considering NAM 0-1km lapse rates 925-mb wind.

Long term (Monday through Saturday)...

moisture will increase across the region on Monday as an inverted
mid upper level trough moves across south texas and northeast mexico
on Monday. With precipitable water values climbing over 2 inches
again (2.0-2.3) on Monday, anticipate isolated to scattered showers
and thunderstorms to be able to develop during the day. The
disturbance aloft will swiftly traverse westward Monday night into
early Tuesday. Weak ridging will slowly build into the area during
the week. Higher moisture lingers across the region during the
early part of the upcoming week though, and an isolated shower or
thunderstorm will be possible. Anticipate most of this convection
to be limited to streamer showers in the morning, with a sea-breeze
thunderstorm possible in the afternoons on Wednesday and Thursday.

By Friday into the weekend drier air will move into the area, and
suppressive ridging aloft will keep the end of the week dry.

Higher moisture over the region will keep afternoon temperatures
slightly below to near normal early in the period. Temperatures
will rise during the mid to late week, especially across western
counties, as drier air and riding takes better hold of the region.

Preliminary point temps pops
Corpus christi 79 91 77 90 77 10 10 20 30 20
victoria 78 92 77 92 76 10 10 10 20 10
laredo 78 101 79 97 78 0 10 10 20 20
alice 77 94 77 94 76 0 10 20 30 20
rockport 82 88 80 90 79 10 10 20 30 10
cotulla 77 101 77 96 76 0 10 10 20 20
kingsville 79 94 78 92 78 0 10 20 30 20
navy corpus 81 87 80 90 80 10 10 20 30 20

Crp watches warnings advisories
Tx... Heat advisory until 7 pm cdt this evening for the following
zones: coastal kleberg... Coastal nueces... Inland kleberg...

inland nueces... Jim wells... Webb.

Gm... None.

Tb 78... Aviation


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 0 mi52 min S 19 G 24 82°F 88°F1010.1 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi52 min E 18 G 22 85°F1010.7 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi52 min SSE 23 G 26 84°F1010.1 hPa
MBET2 21 mi52 min S 23 G 27 90°F1009.1 hPa
AWRT2 30 mi52 min SSE 16 G 24 84°F1010.6 hPa
EMAT2 37 mi52 min SE 19 G 23 86°F1009.9 hPa
MAXT2 - Mission-Aransas Reserve, TX 42 mi82 min SE 11 1011 hPa (+2.0)

Wind History for Port OConnor, TX
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Lavaca - Calhoun County Airport, TX4 mi27 minSSE 8 G 1410.00 miPartly Cloudy80°F76°F88%1010.8 hPa
Palacios Municipal Airport, TX19 mi29 minSSE 16 G 2310.00 miMostly Cloudy83°F80°F91%1010.8 hPa
Victoria, Victoria Regional Airport, TX23 mi31 minSSE 108.00 miOvercast81°F77°F88%1010.4 hPa

Wind History from PKV (wind in knots)
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Last 24hrS6S5S7S7S9S8S5S6S9
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SE11S15SE15
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1 day agoCalmCalmCalmCalmSE3CalmCalmCalmS5SW9S7S9S9S9S10
G14
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2 days agoE5SE7E4CalmNE4NE5NE4N3NE7NW4N4NE7NE3E5NE7SE7E5E6E6E6E3SE3SE3Calm

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Sun -- 12:30 AM CDT     0.10 feet Low Tide
Sun -- 04:02 AM CDT     Moonset
Sun -- 06:29 AM CDT     Sunrise
Sun -- 11:14 AM CDT     0.88 feet High Tide
Sun -- 11:59 AM CDT     0.88 feet Low Tide
Sun -- 02:42 PM CDT     0.89 feet High Tide
Sun -- 05:30 PM CDT     Moonrise
Sun -- 08:27 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.20.30.40.50.60.70.80.80.90.90.90.90.90.90.90.80.80.70.50.40.30.1

Tide / Current Tables for Seadrift, San Antonio Bay, Texas
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Seadrift
Click for Map
Sun -- 04:03 AM CDT     Moonset
Sun -- 06:30 AM CDT     Sunrise
Sun -- 08:26 AM CDT     0.15 feet Low Tide
Sun -- 05:31 PM CDT     Moonrise
Sun -- 05:58 PM CDT     0.35 feet High Tide
Sun -- 08:27 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.30.30.30.3

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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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.