Sunday, July12, 2020
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Marine Weather and Tides
Port Lavaca, 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 6:37AMSunset 8:30PM Sunday July 12, 2020 1:09 AM CDT (06:09 UTC) Moonrise 12:00AMMoonset 12:23PM Illumination 57% Phase: Waning Gibbous; Moon at 21 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- 1011 Pm Cdt Sat Jul 11 2020
Rest of tonight..South winds 10 to 15 knots. Bay waters slightly choppy.
Sunday..Southwest winds 10 to 15 knots becoming south in the afternoon. Bay waters slightly choppy.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Monday..Southwest winds around 10 knots becoming south in the afternoon. Bay waters smooth to slightly choppy becoming slightly choppy in the afternoon.
Monday night..South winds 10 to 15 knots. Bay waters slightly choppy.
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 10 to 15 knots. Bay waters slightly choppy.
Wednesday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Thursday..South winds around 10 knots. Bay waters smooth to slightly choppy.
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 1011 Pm Cdt Sat Jul 11 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Light to moderate south and southwest winds will continue hrough early next week as surface high pressure lingers over the western gulf of mexico. Wind speeds will typically be highest offshore at night and in the bays in the afternoons. Small craft exercise caution conditions will be possible at times.


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 120505 AFDCRP

Area Forecast Discussion National Weather Service Corpus Christi TX 1205 AM CDT Sun Jul 12 2020

DISCUSSION.

06Z aviation discussion is below.

AVIATION.

Still expect occasional MVFR ceilings toward daybreak, but these should remain east of LRD and dissipate by mid morning ahead of occasionally gusty S winds, mainly at CRP.

PREV DISCUSSION. /Issued 358 PM CDT Sat Jul 11 2020/

SHORT TERM (Tonight through Sunday night) .

Issued an Excessive Heat Warning for the inland portions of Nueces and Kleberg counties until 23z today based on conditions/expected conditions at NQI/RBO. Otherwise, will maintain the Heat Advisory for South Texas (except for the barrier islands) until 01z Sunday given current/expected conditions. No significant change to the upper pattern is expected during the period, as the upper high pressure system meanders over the region. The GFS/NAM predict lower PWAT values Sunday afternoon. Brief patchy fog may occur over interior portions of the Coastal Bend during the 09-13z Sunday period (SREF probabilities/NAM thermodynamic profiles.)

LONG TERM (Monday through Saturday) .

Not much has changed since the last forecast package. An area of high pressure will remain in place over much of Texas through next week. Models are showing the high pressure moving slightly north by Wednesday which could result in more of an easterly wind flow with the possibility of slight increase in moisture across the area, mainly the Coastal Bend and Victoria Crossroads. With the possibility of reduced mid-level subsidence and a slightly cooler 850-700 mb temperature south of the ridge axis, some brief isolated shallow showers will be possible across the local waters and possibly reaching the coastal counties, mainly by Friday.

Temperatures will be range within the lower 90s to near 108 and gradually decrease slightly during the week, from east to west. However, low temperatures will remain mild next week temperatures ranging within the mid 70s to lower 80s. Heat indices will remain high with SPS and heat advisory criteria likely being met through Wednesday, before the heat indices drop below 110 degrees by mid/late week.

MARINE .

Weak to moderate onshore flow expected tonight through Sunday night, due to weak surface high pressure over the NW Gulf of Mexico and surface low pressure over north and west TX. A weak to moderate onshore flow will continue Monday afternoon and persist throughout the week, occasionally veering out of the south from time to time. A diurnal pattern is expected Monday through Thursday with winds subsiding to weaker levels at night and more moderate levels during the afternoon. Therefore, SCEC conditions will be possible every afternoon and early evening Monday through Thursday across the local waters and southern bays. Seas will be 3 to 4 feet across the nearshore and offshore waters with no rain chances through mid week.

PRELIMINARY POINT TEMPS/POPS. Corpus Christi 77 97 76 96 78 / 0 0 0 0 0 Victoria 77 100 76 98 77 / 0 0 0 0 0 Laredo 78 109 77 107 79 / 0 0 0 0 0 Alice 75 104 75 102 76 / 0 0 0 0 0 Rockport 81 95 81 92 81 / 0 0 0 0 0 Cotulla 76 109 75 108 76 / 0 0 0 0 0 Kingsville 76 101 75 100 77 / 0 0 0 0 0 Navy Corpus 80 94 80 93 81 / 0 0 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES. TX . None. GM . None.



MCZ/93 . AVIATION


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 0 mi51 min SSW 15 G 18 82°F 1014 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi51 min S 19 G 21 83°F 88°F1013.8 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi51 min SSE 19 G 22 85°F 88°F1014.2 hPa
MBET2 21 mi51 min SSW 18 G 21 83°F 87°F1012.9 hPa
AWRT2 30 mi51 min S 11 G 15 83°F 89°F1013.9 hPa
EMAT2 37 mi51 min S 13 G 16 83°F 90°F1013.8 hPa
RCPT2 - 8774770 - Rockport, TX 49 mi51 min SE 17 G 21 84°F 1015.3 hPa

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 mi74 minS 37.00 miFair80°F78°F95%1014.6 hPa
Palacios Municipal Airport, TX19 mi76 minS 1110.00 miPartly Cloudy84°F77°F80%1014.2 hPa
Victoria, Victoria Regional Airport, TX23 mi78 minS 910.00 miFair81°F75°F85%1014.3 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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Last 24hrS6S5S5CalmCalmCalmCalmCalmS8SW8SW6S8S8S6S5S9S11
G15
S11
G15
S9S10S8S5S5S6
1 day agoS7S3S3S4S5SE4SE3S6S10S10
G15
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G14
S9
G14
S9S10SE14SE14S10S11S10
G15
S8S5CalmCalmS4
2 days agoS7S7S6S6S6S4S3S7S8S11S13
G18
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G21
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G15
S13S11SE12S12
G16
S10
G15
S6SE3SE5S4

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
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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 Corpus Christi, TX (2,6,7,8)
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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 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.