Tuesday, May23, 2017 L-36.com


Marine Weather and Tides
Port O'Connor, TX

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:31AMSunset 8:18PM Tuesday May 23, 2017 2:01 AM CDT (07:01 UTC) Moonrise 3:58AMMoonset 5:01PM Illumination 6% Phase: Waning Crescent; Moon at 27 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- 958 Pm Cdt Mon May 22 2017
Rest of tonight..North winds 5 to 10 knots. Bay waters smooth.
Tuesday..North winds 5 to 10 knots becoming northeast in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Tuesday night..North winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms in the evening, then a slight chance of showers and Thunderstorms after midnight.
Wednesday..Northwest winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday night..West winds 5 to 10 knots becoming southwest 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Thursday..South winds 10 to 15 knots. Bay waters slightly choppy.
Thursday night..South winds 15 to 20 knots. Bay waters choppy.
Friday..South winds 15 to 20 knots. Bay waters choppy.
Friday night..South winds around 15 knots. Bay waters slightly choppy to choppy.
Saturday..South winds around 15 knots. Bay waters slightly choppy to choppy.
Saturday night..South winds around 15 knots. Bay waters slightly choppy to choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 958 Pm Cdt Mon May 22 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore winds will begin to turn west and eventually be out of the north before the frontal passage Tuesday. This cold front will move across the waters late Tuesday but expect winds to already be out of the north by Tuesday late morning. Strengthening to caution levels behind the boundary passage overnight Tuesday night into Wednesday morning. Onshore winds will return early Thursday and quickly strengthen through the day.

7 Day Forecast for Marine Location Near Port O'Connor, TX
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location: 28.44, -96.4     debug


Area Discussion for - Corpus Christi, TX
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Fxus64 kcrp 230600
afdcrp
area forecast discussion
national weather service corpus christi tx
100 am cdt Tue may 23 2017

Discussion
Update for 06z aviation cycle.

Aviation
This morning... Mostly MVFR. Still expecting an MVFR deck to
develop across the coastal plains within the next couple of hours.

Could see a few isolated to scattered showers, possibly embedded thunder,
closer to the coast early this morning. CIGS may briefly lower to
ifr at kali/kcrp by sunrise. Medium confidence.

Today... MVFR/vfr. Should be MVFR much of the day with some lifting
possible by mid-afternoon. Still expecting a cold front is drop
down from the north-northwest later this afternoon/early evening
with scattered thunderstorm activity along it. Did add prob30
groups for all terminals excluding klrd, less confident on more
direct impacts there. Medium confidence.

Previous discussion /issued 1005 pm cdt Mon may 22 2017/
discussion...

no significant changes were made to the forecast for the remainder
of the night. The main reason for the update was slightly lower
pops over inland locations as showers have diminished this
evening. A few showers will still be possible overnight though,
especially over the gulf waters where boundary still lingers.

Otherwise, aligned hourly wx grids based on current trends.

Previous discussion... /issued 413 pm cdt Mon may 22 2017/
short term (tonight through Tuesday night)...

msas continues to depict the quasi-stationary boundary near and
parallel to the coast, and deterministic output maintain the
general position of this boundary tonight/early Tuesday before it
dissipates. Thus, anticipate additional isold/sct convection
mainly over the ERN cwa/msa tonight/Tuesday. Concur with the
gfs/ecmwf deterministic that an upper level disturbance will dig
s/se across the plains during the period and reinforce/maintain
the upper trough over the cntrl conus. In response, a cold front
is expected to move across the cwa/msa Tuesday night. This front,
significant moisture (nam determinsitic), and increasing upper
jet dynamics (gfs deterministic) should result in additional
convection Tuesday afternoon/evening in advance of the front.

Given the increased vertical shear and high CAPE values, strong
convection may occur. SPC has the CWA in a slight risk for severe
thunderstorms Tuesday. Increasing offshore flow expected Tuesday
night over the msa in response to frontal passage.

Long term (Wednesday through Monday)...

much quieter weather is expected by Wednesday in wake of the exiting
front. Northerly wind and drier conditions will develop. Cooler
temperatures will be felt briefly Wednesday but be most noticeable
during the overnight hours. South to southeast flow redevelops
Wednesday night with a gradual warming and increase in moisture
through the end of the week. Developing and deepening of surface low
pressure across the high plains Thursday will lead to breezy
conditions across south texas, especially the coastal bend and gulf
waters. Small craft advisories will be possible off and on starting
Thursday through the weekend. GFS and ECMWF models show sufficient
moisture returning over the weekend, with slight rain chances
possible by Sunday. The models also show another weak boundary to
move into the area early next week which would increase rain chances
heading into Monday.

Preliminary point temps/pops
Corpus christi 64 86 69 88 77 / 30 10 0 0 0
victoria 59 85 65 88 75 / 30 10 0 0 0
laredo 65 88 69 96 76 / 40 10 0 0 0
alice 62 88 66 92 76 / 30 10 0 0 0
rockport 65 84 73 86 79 / 30 10 0 0 0
cotulla 60 88 65 96 75 / 30 10 0 0 0
kingsville 63 88 67 91 77 / 40 10 0 0 0
navy corpus 68 85 73 87 80 / 30 10 0 0 0

Crp watches/warnings/advisories
Tx... None.

Gm... None.

Gh/77... Aviation


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 0 mi43 min NNE 11 G 13 74°F 1010.7 hPa
MBET2 4 mi43 min NE 11 G 14 74°F
SDRT2 - 8773037 - Seadrift, TX 17 mi43 min N 8 G 9.9 74°F 82°F1011.2 hPa
VCAT2 18 mi43 min NNE 11 G 14 72°F 81°F1011.6 hPa
AWRT2 26 mi43 min NNE 13 G 15 76°F 81°F1010.8 hPa
EMAT2 32 mi43 min N 8 G 11 72°F 80°F1010.5 hPa
KBBF 38 mi26 min NNE 2.9 77°F 73°F
MAXT2 - Mission-Aransas Reserve, TX 40 mi61 min 8 76°F 1011 hPa (+1.0)72°F
CPNT2 40 mi43 min NNE 7 G 11 76°F 82°F
KBQX 42 mi26 min ENE 7 77°F 77°F
RCPT2 - 8774770 - Rockport, TX 45 mi43 min NE 8 G 13 77°F 82°F1010.4 hPa
SGNT2 47 mi43 min N 8 G 11 72°F 79°F1010.6 hPa

Wind History for Port OConnor, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Lavaca - Calhoun County Airport, TX21 mi66 minN 010.00 miOvercast72°F69°F94%1011.8 hPa
Palacios Municipal Airport, TX21 mi68 minNNE 810.00 miOvercast70°F68°F93%1011.5 hPa

Wind History from PKV (wind in knots)
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Last 24hrCalmCalmE5CalmCalmCalmCalmE10
G16
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SE3SE8S3
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CalmCalmCalmCalmCalmCalmN3CalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalm--CalmCalmCalmSE16
G19
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SE10CalmCalmCalmCalmCalmNE5
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CalmCalmCalmNE8
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2 days agoSE10SE9SE4CalmSE6CalmCalmE10E11E11
G16
E12SE12SE14SE12SE14CalmSE8SE11
G16
CalmCalmCalmCalmCalmCalm

Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Tue -- 04:58 AM CDT     Moonrise
Tue -- 06:30 AM CDT     Sunrise
Tue -- 08:05 AM CDT     0.76 feet High Tide
Tue -- 06:00 PM CDT     Moonset
Tue -- 08:13 PM CDT     Sunset
Tue -- 10:22 PM CDT     0.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.40.50.50.60.70.70.70.80.80.70.70.70.70.70.60.60.50.40.30.20.20.10.1

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Tue -- 01:08 AM CDT     0.51 feet Low Tide
Tue -- 04:59 AM CDT     Moonrise
Tue -- 06:31 AM CDT     Sunrise
Tue -- 10:00 AM CDT     1.05 feet High Tide
Tue -- 01:34 PM CDT     1.01 feet Low Tide
Tue -- 04:26 PM CDT     1.04 feet High Tide
Tue -- 06:01 PM CDT     Moonset
Tue -- 08:15 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.50.50.60.70.80.91111111111110.90.90.80.60.5

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 (3,6,7,8)
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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.