Saturday, November17, 2018 L-36.com


Marine Weather and Tides
Port O'Connor, TX

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:52AMSunset 5:34PM Saturday November 17, 2018 11:41 AM CST (17:41 UTC) Moonrise 2:24PMMoonset 1:22AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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- 930 Am Cst Sat Nov 17 2018
Rest of today..Southeast winds 5 to 10 knots. Bay waters smooth.
Tonight..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the evening, then a chance of showers after midnight.
Sunday..East winds 10 to 15 knots becoming northeast in the afternoon. Bay waters slightly choppy. Showers likely and isolated Thunderstorms.
Sunday night..North winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and isolated Thunderstorms.
Monday..North winds 10 to 15 knots. Bay waters slightly choppy. Showers likely and isolated Thunderstorms.
Monday night..North winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Tuesday..North winds 15 to 20 knots becoming northeast 10 to 15 knots in the afternoon. Bay waters choppy becoming slightly choppy in the afternoon. A chance of showers.
Tuesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Wednesday..Northeast winds 10 to 15 knots. Bay waters slightly choppy. Showers likely and isolated Thunderstorms.
Wednesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. Showers likely and isolated Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 930 Am Cst Sat Nov 17 2018
Synopsis for high island to matagorda ship channel out 60 nm.. Light onshore winds will prevail early today as high pressure drifts to the east. South to southeast winds will increase through Sunday ahead of the next cold front. The front should push off the coast early Monday with winds and seas increasing from the northeast.


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 171221
afdcrp
area forecast discussion
national weather service corpus christi tx
621 am cst Sat nov 17 2018

Discussion
Updated for the 12z aviation discussion.

Aviation
High cirrus clouds streaming in from the west making it difficult
for br to develop this morning. Have backed off on the extremely
low vsbys, but as dewpoint depressions remain rather close with
light winds, will continue a period of MVFR vsbys this morning.

Did add tempo MVFR CIGS toward lrd from 12-14z as vertical
soundings hint at sufficient moisture in the lowest levels to
allow clouds to fill in out west before temps warm up. Otherwise,
vfr bkn 3500-4000 feet expected through much of the day. Will see
cigs lowering overnight as coastal trough continues to add
moisture to S tx. Have CIGS transitioning to MVFR after 00z sun
with vsbys gradually lowering to MVFR as well, mentioning vcsh,
especially toward the coastal region from crp-ali-vct.

Previous discussion issued 429 am cst Sat nov 17 2018
short term (today through Sunday)...

winds are pretty light and variable this morning and with surface
moisture on the rise, have seen periods of fog this morning
across inland areas. High cirrus streaming in from the west has
helped visibilities to bounce around to improved visibilities
this morning, but a few locations could still see visibilities
lower to 1 mile at times.

For today, onshore flow will increase as surface low pressure
develops across the southern high plains. Computer models continue
to develop a coastal trough gradually today and into tonight which
will increase moisture and rain chances. However for today, should
be mostly an increase in cloud coverage with a few sprinkles
possible underneath the cap. In the meantime, a cold front will
push through the central plains with the aid of a 1040mb surface
high and sheared west to east h5 trough.

For tonight, an increase in moisture and isentropic lift will lead
to isolated to scattered showers. The increase in moisture will
also lead to warmer overnight lows in the 60s. Low ceilings
combined with rain showers may lead to patchy to areas of fog
tonight.

For Sunday, the surface high across the central plains will have
weakened some but the mid-level trough will continue to slide
east with the surface cold front expected to continue to move
south and reach northern parts of south texas from near cotulla
to victoria toward the noon hour Sunday. Have leaned more toward
the NAM timing as it typically has a better handling with shallow
cold fronts. Daytime highs for Sunday will be tricky and highly
depend on the timing of the front. That said, with the current
fropa timing more during the mid-day afternoon period, day time
highs may be able to reach into the upper 60s prior to the front
across the northern tier with highs in the low to mid 70s across
the southern counties and along the coast. Again, temps will
depend on timing of the front and could change with any increase
or decrease in speed of the front. Scattered to numerous showers
are expected ahead and along the front, with greatest focus across
the eastern half, roughly east of highway 281, as the frontal
boundary meets up with the lingering coastal trough, stalling
along the coast.

Marine...

south-southeasterly wind will increase to scec at times,
especially across the offshore waters in response to developing
low pressure across the southern high plains. This combined with
a coastal trough will increase moisture over the region leading
to isolated to scattered showers tonight, increasing to scattered
to numerous showers for Sunday.

A cold front will push through the gulf waters on Sunday night
into Monday morning. This front will bring chances of showers to
the middle texas coastal waters Sunday night into Monday. A
coastal trough will then develop Monday and remain across the
western gulf of mexico through mid week. This will keep an
unsettled weather pattern over the gulf waters with additional
chances of showers. Moderate to at times north to northeast winds
can be expected through much of next week.

Long term (Sunday night through Friday)...

the cold front will hang up across south texas Sunday evening,
somewhere close to the coast. With the boundary in the area,
chances for showers will continue Sunday night and have 40 pops
out west with 60s pops over the coastal bend and gulf waters. A
coastal trough then develops on Monday across the western gulf of
mexico. Deepest moisture will reside near or just off the coast
and will keep highest rain chances across the east on Monday.

Heading into Tuesday, coastal trough may get briefly disrupted
and or shifted to the east a bit as a quick upper level shortwave
trough moves across south central texas. Most inland locations may
actually remain dry on Tuesday with showers primarily over the
immediate coast and middle texas coastal waters. Coastal trough
moves back closer to the texas coast on Wednesday in advance of a
stronger shortwave trough. As a result, unsettled weather will
return on Wednesday into Wednesday night as additional chances of
showers will be possible across the area. Trough axis will shift
east of the area Wednesday night into Thursday morning, which will
bring an end to rain chances from west to east. Outside of some
lingering showers over the waters, thanksgiving day may end up dry
across much of south texas. Quiet weather will continue into
Friday.

Regarding temperatures through the extended, Monday will be the
coolest day of the week. Highs will only be in the middle to upper
50s with low 60s near the coast. Temperatures will only rebound into
the 60s Tuesday through Thursday, and by Friday into the low 70s.

Preliminary point temps pops
Corpus christi 76 65 73 53 59 10 50 70 60 60
victoria 75 60 68 48 56 10 40 70 60 60
laredo 75 62 71 51 56 0 20 40 50 40
alice 77 62 72 50 56 10 40 60 50 50
rockport 74 66 71 52 59 10 40 70 60 70
cotulla 74 60 65 48 55 0 30 40 50 40
kingsville 77 64 74 52 58 10 40 70 60 50
navy corpus 76 69 74 56 62 10 50 70 60 60

Crp watches warnings advisories
Tx... None.

Gm... None.

Cb 85... 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 mi48 min ESE 4.1 G 5.1 66°F 58°F1020.7 hPa
MBET2 4 mi48 min SSE 7 G 8 67°F 64°F1019.7 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi48 min ESE 8 G 11 71°F 59°F1020.6 hPa
VCAT2 18 mi48 min SE 2.9 G 5.1 60°F 55°F1020.9 hPa
AWRT2 26 mi48 min E 5.1 G 8 67°F 56°F1020.5 hPa
EMAT2 32 mi48 min E 7 G 8.9 67°F 57°F1020.8 hPa
KBBF 38 mi27 min SSE 16 72°F 57°F
KBQX 42 mi27 min SE 9.9 G 15 72°F 57°F
RCPT2 - 8774770 - Rockport, TX 45 mi48 min Calm G 1.9 68°F 1020.2 hPa
SGNT2 47 mi48 min E 6 G 7 66°F 53°F1021.1 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 mi72 minN 05.00 miOvercast with Haze70°F60°F72%1021.7 hPa
Palacios Municipal Airport, TX21 mi49 minESE 610.00 miMostly Cloudy71°F61°F71%1021.3 hPa

Wind History from PKV (wind in knots)
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Last 24hrS4SW6SE8E8SE9SE7SE6SE3CalmE4E3CalmCalmCalmCalmCalmCalmNE3CalmCalmCalmCalmCalmSE8
1 day agoCalmSW5SE8S7SW7S5S6S5S5S5S5S5S3----Calm----------W3Calm--
2 days agoN13N10
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N12NW10N5N5CalmCalmCalmN4E3NE3CalmCalmCalmE4E5NE3CalmCalmE3CalmSE3

Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Sat -- 01:22 AM CST     Moonset
Sat -- 04:30 AM CST     1.01 feet High Tide
Sat -- 06:49 AM CST     Sunrise
Sat -- 02:24 PM CST     Moonrise
Sat -- 05:31 PM CST     Sunset
Sat -- 07:36 PM CST     0.66 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.91111110.90.90.80.80.80.80.80.70.70.70.70.70.70.70.70.7

Tide / Current Tables for Port Lavaca, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Sat -- 01:23 AM CST     Moonset
Sat -- 06:10 AM CST     1.13 feet High Tide
Sat -- 06:50 AM CST     Sunrise
Sat -- 02:25 PM CST     Moonrise
Sat -- 05:31 PM CST     Sunset
Sat -- 10:20 PM CST     0.75 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.80.911.11.11.11.11.11110.90.90.90.90.90.90.80.80.80.80.70.8

Weather Map and Satellite Images
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GOES Local Image of    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.
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Wind Forecast for Corpus Christi, TX (12,3,4,5)
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Ground Weather Radar Station Corpus Christi, TX
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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.