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Marine Weather and Tides
Port Lavaca, TX

Version 3.4
NOTICE
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.
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 7:06AMSunset 5:32PM Saturday December 7, 2019 11:10 PM CST (05:10 UTC) Moonrise 2:49PMMoonset 2:44AM Illumination 86% 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- 932 Pm Cst Sat Dec 7 2019
Rest of tonight..Southeast winds around 5 knots. Bay waters smooth.
Sunday..South winds 5 to 10 knots. Bay waters smooth.
Sunday night..South winds around 10 knots. Bay waters smooth to slightly choppy.
Monday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers late in the afternoon.
Monday night..South winds 5 to 10 knots becoming southwest after midnight. Bay waters smooth. A slight chance of showers early in the evening, then a chance of showers in the late evening and early morning. Showers likely late.
Tuesday..North winds 15 to 20 knots. Bay waters choppy. Showers likely in the morning, then a chance of showers in the afternoon.
Tuesday night..North winds 15 to 20 knots. Bay waters choppy. A chance of showers early in the evening, then a slight chance of showers in the late evening and overnight.
Wednesday..North winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the afternoon.
Wednesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
Thursday..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the morning.
Thursday night..Northeast winds around 10 knots. Bay waters smooth to slightly choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 932 Pm Cst Sat Dec 7 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Light onshore flow strengthens Sunday into Monday. A cold front should move through the waters Tuesday morning bringing increased rain chances as it passes through. The frontal passage will usher in moderate to strong offshore flow Tuesday night through Wednesday will likely bring advisory criteria conditions to 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 080451 AFDCRP

Area Forecast Discussion National Weather Service Corpus Christi TX 1051 PM CST Sat Dec 7 2019

DISCUSSION.

06Z aviation discussion included below.

AVIATION.

Conditions remain on track for a swath of low visbys in fog to form mainly from ALI to VCT after midnight, with IFR likely at times. CRP and COT should remain on the eastern and western fringes (respectively) of this dense fog with some occasional MVFR vis at times through early morning. VFR resumes by mid morning with light SSE winds.

PREV DISCUSSION. /Issued 328 PM CST Sat Dec 7 2019/

SHORT TERM (Tonight through Sunday Night) .

The surface high pressure ridge will continue to drift to the east tonight. Surface winds will veer to southeast for the overnight hours. This will lead to steadily increasing dewpoints tonight. With light winds and clear skies, expect radiational fog will develop over the inland coastal plains shortly after midnight. The fog could become dense in some areas from Alice to Beeville to Victoria.

A surface trough of low pressure will slowly strengthen over the southern high plains Sunday into Sunday night ahead of the upper trough moving into the southern Rockies. Southerly low level flow will increase to around 30 knots by Sunday night and bring in higher moisture in the lower levels. Expect more cloud cover over the coastal plains Sunday night where the stronger low level flow will be. Patchy fog will be possible over the Brush Country as the low level flow will be less there.

LONG TERM (Monday through Saturday) .

Warm conditions will continue Monday with weak ridging and H85 flow out of the southwest. Ridging weakens further through Monday afternoon as a mid-level trough lifts north out of Baja California and digs through the Desert Southwest Monday. This will move the associated cold front through northwest Texas Monday afternoon, reaching South Texas early Tuesday morning. Moisture ahead of the front will increase to around 1.0 to 1.3 inches. Scattered showers will be possible ahead and along the front. Thunder is not expected mainly due to the strong capping that will develop from the day before. CAA behind the Tuesday front will lead to temperatures dropping through the day, with the warmest temperatures likely to occur early in the morning prior to the frontal passage. Temperatures Tuesday afternoon are expected to range in the 50s. Behind the front, drier and cooler air will filter in, with drier conditions developing through Tuesday night. Overnight lows will drop into the upper 30s to lower 40s. Cool temperatures will continue for Wednesday with highs expected to range in the lower 60s.

Temperatures will gradually warm through the latter half of the week. Models hint on a weak frontal boundary to move through Friday, but not really affect temperatures, being mainly a wind shifter. A slight chance for showers will be possible heading into Thursday night into Friday.

MARINE .

A weak onshore flow is expected tonight through Sunday as the high pressure ridge moves slowly to the east. Onshore flow will strengthen to moderate levels Sunday night into Monday as low pressure strengthens over the southern plains.

Weak to moderate onshore flow is expected Monday. Patchy fog will be possible Monday night ahead of an approaching cold front. The cold front will push offshore Tuesday morning with Small Craft Advisory conditions likely over the Gulf waters Tuesday through Tuesday night. Scattered showers will affect the coastal waters Monday night through Tuesday night. Another round of showers will be possible Thursday night into Friday.

PRELIMINARY POINT TEMPS/POPS. Corpus Christi 55 77 64 83 58 / 0 0 0 0 20 Victoria 51 76 63 81 50 / 0 0 0 0 50 Laredo 54 79 62 84 56 / 0 0 0 0 10 Alice 53 80 64 87 56 / 0 0 0 0 20 Rockport 58 74 65 78 57 / 0 0 0 0 40 Cotulla 51 79 58 82 51 / 0 0 0 0 30 Kingsville 53 79 63 86 58 / 0 0 0 0 20 Navy Corpus 58 74 66 77 59 / 0 0 0 0 30

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 mi59 min S 6 G 6 62°F 65°F1021.3 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi59 min SE 5.1 G 6 63°F 67°F1021.1 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi59 min E 1.9 G 2.9 58°F 66°F1021.8 hPa
MBET2 21 mi53 min S 4.1 G 5.1
AWRT2 30 mi59 min SE 4.1 G 6 64°F 66°F1021 hPa
EMAT2 37 mi53 min NW 2.9 G 4.1 55°F 66°F1021 hPa
RCPT2 - 8774770 - Rockport, TX 49 mi59 min 65°F 1021.5 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 mi76 minS 37.00 miFair56°F54°F95%1022 hPa
Palacios Municipal Airport, TX19 mi78 minN 07.00 miFair56°F52°F87%1021.6 hPa
Victoria, Victoria Regional Airport, TX23 mi80 minSSE 310.00 miFair54°F50°F87%1021.8 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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Last 24hrN8N4N4N7N7N6N6N5N4N7N11N8NE7NE5NE4NE4N3NE5NE3SE4S4S3S3Calm
1 day agoS4CalmS5S5CalmNW5CalmCalmNW3W5NW12N14N10N12
G16
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N7N7N7N8N9N7
2 days agoCalm--------CalmN3Calm--E4SE6SE7S11
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S10S11S9SE5SE6S5S4S5

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 (0,6,7,8)
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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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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.