Sunday, May28, 2017 L-36.com


Marine Weather and Tides
Port Lavaca, TX

Version 3.4
What's New / NOTES
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 6:29AMSunset 8:21PM Sunday May 28, 2017 5:38 AM CDT (10:38 UTC) Moonrise 8:29AMMoonset 10:27PM Illumination 9% Phase: Waxing Crescent; Moon at 3 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- 446 Am Cdt Sun May 28 2017
Today..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers early in the morning.
Tonight..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms after midnight. Showers and Thunderstorms likely late.
Monday..East winds 5 to 10 knots. Bay waters smooth. Showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Monday night..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Tuesday..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Tuesday night..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Wednesday..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Wednesday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Thursday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Thursday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 446 Am Cdt Sun May 28 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate onshore winds and seas will gradually relax today and Monday but rain chances will increase tonight into Monday as a weak cold front moves into southeast texas. Strong Thunderstorms may move into the coastal waters and bays Monday. Persistent moderate southeasterly flow is expected to return on Tuesday and continue through Friday.

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 280947
afdcrp
area forecast discussion
national weather service corpus christi tx
447 am cdt Sun may 28 2017

Short term (today through Monday)
The main forecast concern this morning is the potential for
thunderstorms and heavy rainfall tonight into Monday morning. A
threat for severe thunderstorms does exist, mainly across
northwest parts of the area.

Warm and muggy conditions persist across south texas this morning.

Low stratus encompasses much of south texas along with temperatures
in the upper 70s to lower 80s. These low clouds should continue
to expand westward closer to the rio grande during the early
morning hours. A few streamers may be possible this morning but
think most locations will remain dry.

Potent upper low will be located over mn wi by this evening with
trough extending back into the plains states. The associated cold
front will stretch southwestward back across texas. It's this
boundary that will produce the weather across the region later
tonight. Current thinking is 12z to 00z time frame will be free of
storms as capping inversion looks to hold strong.

Today will be the last very warm to hot day through at least the
middle of the week. Highs should climb to around 100 degrees at
laredo with upper 80s to lower 90s over the northern coastal bend
and victoria crossroads. Heat index values for a few hours will
range from 105 to 109 mainly west of i37.

By late this afternoon and early evening, thunderstorms should
begin to develop to the north of the area across south central
texas along boundary. Additional storms may also develop over the
higher terrain of mexico as shortwave trough approaches. This
activity will shift to the east and east southeast and first
impact the western and northwest parts of the area later this
evening. The severe weather threat may initially exist with this
convection given the amount of instability present and if storms
organize into a line complex. Damaging winds and large hail would
be the primary hazards. Confidence is lower with regards to how
far southeast across the area the severe threat evolves.

Showers and storms will continue to push southeastward during the
late evening and overnight hours, approaching the coast around
12z. This is when the heavy rainfall threat may develop. Moisture
pooled along the slow moving boundary combined with upper level
disturbance traversing the area could lead to some areas of
moderate to heavy rainfall. On average, 1 to 3 inches of rain with
some isolated higher amounts may be possible through midday
Monday. Additional showers and thunderstorms may occur Monday
afternoon, but this will be dependent on whether the front convective
outflow actually makes it completely through the area.

Long term (Monday night through Saturday)
An unsettled weather pattern will persist across south texas through
much of the coming week with a series of shortwave disturbances and
jet streaks passing aloft throughout the week. Although moisture
will not be as abundant as during the short term period, adequate
moisture will remain for convection across the region. Models
continue to differ on the exact timing of the shortwave disturbances
ejecting across the region, but pattern indicates at least scattered
showers and storms will be possible across the region each day
through the end of the week.

Cloud cover and rain across the region will help to keep
temperatures cooler than last week, although a gradual warming trend
can be expected to develop late in the week.

Preliminary point temps pops
Corpus christi 91 76 83 73 86 10 60 80 50 50
victoria 91 74 82 70 85 10 70 80 40 50
laredo 100 74 85 71 88 10 60 50 50 50
alice 96 75 84 71 87 10 60 70 50 50
rockport 88 77 82 75 85 10 60 80 50 50
cotulla 98 73 84 69 87 10 70 50 30 50
kingsville 94 77 85 72 88 10 60 80 50 50
navy corpus 88 78 83 76 85 10 60 80 50 50

Crp watches warnings advisories
Tx... None.

Gm... None.

Tb 78... Short term
lb 84... Long term


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 0 mi50 min S 14 G 19 80°F 81°F1008.7 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi50 min SSE 19 G 23 82°F 82°F1008.5 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi56 min S 17 G 19 80°F 1008.9 hPa
MBET2 21 mi50 min SSW 19 G 20 80°F
AWRT2 30 mi56 min S 13 G 17 81°F 82°F1008.7 hPa
EMAT2 37 mi56 min S 13 G 18 81°F 82°F1009.3 hPa
MAXT2 - Mission-Aransas Reserve, TX 42 mi98 min 8.9 81°F 1010 hPa (-2.0)76°F
CPNT2 43 mi56 min S 13 G 16 81°F 82°F
RCPT2 - 8774770 - Rockport, TX 49 mi56 min SSW 18 G 25 82°F 82°F1008.2 hPa

Wind History for Port OConnor, TX
(wind in knots)    EDIT      (on/off)   Help
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S13
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G17
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G17
S12
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G16
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G19
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SE17
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G18
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S16
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S10
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G15
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G21
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G20
S12
G17
S15
2 days
ago
S17
S18
S18
S19
S19
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G22
S19
S19
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SE17
G23
S19
G24
S23
G28
S23
S22
S22
G28
S21

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Lavaca - Calhoun County Airport, TX4 mi63 minS 87.00 miMostly Cloudy78°F77°F97%1009.1 hPa
Palacios Municipal Airport, TX19 mi45 minS 119.00 miOvercast79°F75°F90%1009.3 hPa
Victoria, Victoria Regional Airport, TX23 mi47 minSSE 76.00 miFog/Mist78°F75°F90%1008.6 hPa

Wind History from PKV (wind in knots)
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Last 24hrCalmCalmCalmS11
G15
S13S12
G18
S15
G20
S13
G20
S14
G18
S14SE12SE15SE12
G16
SE11
G14
SE7CalmSE6S3S7CalmCalmS9S6S9
1 day agoS10
G15
CalmCalmS9
G15
S10
G16
S10S12
G18
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S14
G19
SE14
G19
SE16SE12SE10
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SE11SE11SE12
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G15
CalmS7S3CalmCalmCalm
2 days agoCalmCalmCalmS14
G20
S16
G19
S14
G21
S16
G22
S16
G22
S16
G20
S16
G20
S10
G21
S13
G20
S11S12
G18
SE11
G16
S11
G15
S7S11
G16
S11S12
G16
S11S12
G16
S13
G18
S10
G16

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Sun -- 04:45 AM CDT     0.10 feet Low Tide
Sun -- 06:29 AM CDT     Sunrise
Sun -- 09:29 AM CDT     Moonrise
Sun -- 04:23 PM CDT     1.40 feet High Tide
Sun -- 08:17 PM CDT     Sunset
Sun -- 11:26 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.40.30.20.10.10.20.30.40.60.70.91.11.21.31.41.41.41.41.31.21.210.9

Tide / Current Tables for Seadrift, San Antonio Bay, Texas
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Seadrift
Click for Map
Sun -- 06:30 AM CDT     Sunrise
Sun -- 08:24 AM CDT     0.30 feet Low Tide
Sun -- 09:30 AM CDT     Moonrise
Sun -- 08:17 PM CDT     Sunset
Sun -- 10:27 PM CDT     0.63 feet High Tide
Sun -- 11:27 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.60.50.50.40.40.40.30.30.30.30.40.40.40.50.50.50.60.60.60.60.60.60.6

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 (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 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.