Monday, January20, 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 7:19AMSunset 5:57PM Monday January 20, 2020 5:38 AM CST (11:38 UTC) Moonrise 3:31AMMoonset 2:25PM Illumination 23% Phase: Waning Crescent; Moon at 25 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- 350 Am Cst Mon Jan 20 2020
.small craft should exercise caution...
Today..Northeast winds 15 to 20 knots decreasing to around 10 knots in the afternoon. Bay waters choppy becoming smooth to slightly choppy in the afternoon.
Tonight..Northeast winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Tuesday..East winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday night..East winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Bay waters slightly choppy becoming choppy after midnight. A chance of showers in the late evening and overnight.
Wednesday..Southeast winds 15 to 20 knots. Bay waters choppy. Showers. Isolated Thunderstorms late in the afternoon.
Wednesday night..Southeast winds 15 to 20 knots becoming south 10 to 15 knots after midnight. Bay waters choppy becoming slightly choppy after midnight. Showers and isolated Thunderstorms.
Thursday..West winds 5 to 10 knots becoming northwest in the afternoon. Bay waters smooth. Showers likely in the morning. Isolated Thunderstorms. A chance of showers in the afternoon.
Thursday night..North winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the evening.
Friday..North winds 10 to 15 knots. Bay waters slightly choppy.
Friday night..North winds 5 to 10 knots. Bay waters smooth.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 350 Am Cst Mon Jan 20 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Northeasterly winds will slightly weaken through the day but once again restrengthen tomorrow as the western gulf pressure gradient tightens between eastern u.s. High pressure and lower pressure over mexico. This moderate to strong east to southeast fetch will last through mid week and will push waters levels up to above 3 feet during Wednesdays high tide. This will cause minor coastal flooding. The passage of a disturbance on Wednesday will increase mid week shower and Thunderstorm chances. Winds will come around to the northwest late Thursday with a cold frontal passage.


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 201033 CCA AFDCRP

Area Forecast Discussion . CORRECTED National Weather Service Corpus Christi TX 433 AM CST Mon Jan 20 2020

SHORT TERM (Today through Tuesday).

A progressive upper pattern expected during the period, with weak upper disturbances entering the West Coast and moving across the Four Corners/SWRN CONUS tonight/Tuesday. Isentropic lift (NAM/GFS/ECMWF deterministic runs) and increasing moisture (GFS/NAM) expected tonight/Tuesday. Anticipate patchy light rain/isolated showers over the WRN CWA by Tuesday afternoon (NAM/GFS PWAT values near/above normal and low condensation pressure deficits per the NAM.) Highs in the 60s. Lows tonight in the upper 30s to mid 40s. Evidence of affect of Ekman forcing not yet apparent in the water levels at Bob Hall pier. Anticipate that water levels will remain below 2ft MSL during time of high tide, consistent with the ETSS prediction.

LONG TERM (Tuesday night through Sunday).

A upper level disturbance combined with a coastal trough will increase rain chances through the middle of the week ahead of the cold front. PWAT values will be up to 1.4 inches which is above seasonal average and ranks in the 75th percentile. Due to the lack of instability this will result in scattered to numerous showers over land with scattered showers and isolated thunderstorms over the the waters Tuesday night through Wednesday night. Due to onshore winds and the coastal trough and higher than normal astronomical tides ahead of the front, coastal flooding may be possible Wednesday night. After the passage of the cold front winds will be out of the north through the end of the week with an east to southeast wind returning for the weekend. Rain probabilities will be slim after the passage of the cold front until the next system approaches early next week.

MARINE.

Application of the WaveWatch predictions of the swell characteristics, forecast of wind, and timing of the New Moon to a local expert system suggests a Moderate risk of rip currents today and Tuesday. The upper trough over the Mississippi Valley/SERN CONUS will help maintain moderate northeast flow today. Extended the Small Craft Advisory over the nearshore waters until 18z today, and maintained the Advisory over the offshore waters until 04z Tuesday, due to high seas. Increasing onshore flow expected Tuesday ahead of a series of upper level disturbances that will move across the region Tuesday night through Thursday. These disturbances, and a developing coastal trough, will generate scattered to numerous showers and isolated thunderstorms. In addition, moderate to strong onshore flow is expected Tuesday night through Wednesday night. With the onshore flow and higher than normal astronomical tides, coastal flooding might be possible Wednesday night. A cold front will move across the region late in the week shifting the winds northward with possible Small Craft Advisory conditions beginning Wednesday night through Thursday.

PRELIMINARY POINT TEMPS/POPS. Corpus Christi 60 46 65 58 65 / 0 0 10 40 90 Victoria 60 39 63 50 63 / 0 0 0 40 90 Laredo 62 45 66 58 68 / 0 0 20 50 40 Alice 61 42 66 56 66 / 0 0 10 40 80 Rockport 61 50 66 58 66 / 0 0 10 40 90 Cotulla 61 41 65 54 64 / 0 0 20 60 80 Kingsville 62 43 66 58 67 / 0 0 10 40 80 Navy Corpus 59 52 65 60 66 / 0 0 10 40 90

CRP WATCHES/WARNINGS/ADVISORIES. TX . None. GM . Small Craft Advisory until noon CST today For the following zones: Coastal waters from Baffin Bay to Port Aransas out 20 NM . Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM.

Small Craft Advisory until 10 PM CST this evening For the following zones: Waters from Baffin Bay to Port Aransas from 20 to 60 NM . Waters from Port Aransas to Matagorda Ship Channel from 20 to 60 NM.



WC/87 . SHORT TERM JP/84 . LONG TERM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 0 mi57 min NNE 9.9 G 13 49°F 56°F1033.4 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi57 min NNE 17 G 18 52°F 57°F1033.1 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi57 min N 2.9 G 5.1 42°F 62°F1033.6 hPa
MBET2 21 mi57 min ENE 11 G 14 50°F 61°F1031.6 hPa
AWRT2 30 mi57 min NNE 16 G 19 52°F 60°F1032.3 hPa
EMAT2 37 mi51 min NNW 5.1 G 7 40°F 55°F1032.6 hPa
RCPT2 - 8774770 - Rockport, TX 49 mi57 min 48°F 1033 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 mi1.8 hrsN 510.00 miFair44°F37°F79%1033.5 hPa
Palacios Municipal Airport, TX19 mi46 minN 810.00 miFair0°F0°F%1033.3 hPa
Victoria, Victoria Regional Airport, TX23 mi48 minNNW 610.00 miPartly Cloudy38°F32°F79%1033.9 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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Last 24hrN14N13
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NE12NE7N6N7N6N7--NE7N7--N5
1 day agoCalmNW3CalmCalmCalmE3CalmCalmCalmW6NW4N14
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NE6N12N9N9N11N15
G19
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G18
2 days agoE9E10E9E7E7E7E7E7SE9E10SE12SE12SE9SE10SE9SE8SE9SE10SE8SE9SE9SE6S6S5

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 (6,6,7,8)
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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.