Wednesday, October18, 2017 L-36.com


Marine Weather and Tides
Port O'Connor, TX

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 7:30AMSunset 6:55PM Wednesday October 18, 2017 11:52 AM CDT (16:52 UTC) Moonrise 5:20AMMoonset 5:35PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 1041 Am Cdt Wed Oct 18 2017
Today..Northeast winds 5 to 10 knots becoming east southeast in the afternoon. Bay waters smooth.
Tonight..East winds 5 to 10 knots. Bay waters smooth. A slight chance of showers after midnight.
Thursday..East winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers. A chance of Thunderstorms in the late morning and afternoon.
Thursday night..East winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Friday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Friday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Saturday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Saturday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Sunday..West winds 5 to 10 knots becoming north in the afternoon. Bay waters smooth. Showers and Thunderstorms likely.
Sunday night..North 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 1041 Am Cdt Wed Oct 18 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Winds will gradually veer to the east and strengthen today and tonight. A long easterly fetch will set up across the gulf of mexico Thursday and will continue into the weekend resulting in elevated seas and tides.

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 181100 aaa
afdcrp
area forecast discussion... Updated
national weather service corpus christi tx
600 am cdt Wed oct 18 2017

Discussion See aviation section for 12z tafs.

Aviation Clear skies andVFR conditions are expected for the
region through this afternoon. The temperature-dewpoint
depressions were 1-2 degrees in some spots across the victoria
crossroads and coastal bend early this morning. Could see some
ground fog patchy fog develop around daybreak that could provide
MVFR vsbys. High clouds will be on the increase from the afternoon
into the evening hours as a weak upper level disturbance moves
into northern mexico. An increase in moisture will move into the
coastal areas late tonight. Isolated showers will be possible
along the coast after 08z along with MVFR ceilings. Winds will be
lighter over the inland areas where MVFR vsbys are expected from
08-12z Thursday.

Previous discussion issued 420 am cdt Wed oct 18 2017
short term (today through Thursday)...

the very dry air mass will remain over the region today with high
temperatures near normal. There will be a transition to higher
moisture late tonight into Thursday. A weak trough axis will move
into the coastal waters overnight. Models are in agreement that an
axis of high moisture from the northwest gulf will move toward the
coast late tonight. Low level lapse rates are forecast to be steep
with lapse rates of around 7 degrees c km in the 1000-850 layer.

Expect scattered showers will form over the gulf waters overnight
and be near the coast before daybreak. This deeper moisture, with
models showing precipitable water values back above 1.5 inches,
will move into the coastal plains on Thursday. As this occurs, a
weak short wave trough will move through the big bend of texas and
northern mexico tonight and move into the brush country Thursday.

Expect scattered convection will occur over the coastal waters
into the coastal plains with isolated convection over the eastern
part of the brush country for Thursday.

Tides (today)...

tide levels continue to be above normal along the middle texas
coast. Tides are running slightly above a foot from port aransas
to bob hall pier. The next astronomical high tide is an elevated
one this afternoon. Combined with these elevated tides, water
should reach 2 feet msl for gulf facing beaches south of port
aransas. A coastal flood advisory is in effect from 18z today
until 00z Thursday.

Long term (Thursday night through Tuesday)...

moisture will continue to increase across the region over the end of
the week into the weekend. The deeper longwave trough will dig into
the northwestern states Thursday night and move east and further
south through the end of the week. Several shortwaves will round
the approaching trough and move across the region as this main upper
level trough digs into the central states, with isolated to
scattered showers and thunderstorms possible through the weekend.

The main trough will dig into south texas bringing an associated
cold front through the region on Sunday. Drier and cooler air will
move into the region, dropping rain chances Monday through the end
of the period.

With regard to temperatures, a steady warming trend will continue
through the end of the week, with highs in the upper 80s to lower
90s returning by Saturday. This upcoming cold front is not showing
to be as strong as the previous one, but will still experience a
fair drop in temperatures Sunday into early next week, with lows
dropping from the upper 60s lower 70s back into the upper 50s lower
60s. Highs early next week will stay in the low to mid 80s, but
with lower rh values again, will feel more pleasant and seasonable.

Long moderate to strong easterly fetch across the gulf will possibly
lead to additional minor coastal flooding into the end of the week.

Preliminary point temps pops
Corpus christi 85 67 85 71 85 10 20 40 20 30
victoria 85 64 85 67 85 0 10 40 30 40
laredo 88 63 87 69 88 0 0 10 10 10
alice 88 63 88 68 88 0 10 30 20 20
rockport 83 69 84 73 86 10 20 40 30 40
cotulla 86 60 85 67 87 0 0 10 20 10
kingsville 87 63 88 69 88 0 20 30 20 30
navy corpus 81 71 84 75 87 10 30 40 30 40

Crp watches warnings advisories
Tx... Coastal flood advisory from 1 pm this afternoon to 7 pm cdt this
evening for the following zones: kleberg... Nueces.

Gm... None.

Tmt 89... 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 mi53 min NNE 8.9 G 9.9 70°F 71°F1021.4 hPa (+1.4)
MBET2 4 mi53 min NE 8.9 G 12 71°F 75°F1020.3 hPa (+1.3)
SDRT2 - 8773037 - Seadrift, TX 17 mi53 min ENE 1.9 G 6 76°F 72°F1021.8 hPa (+1.2)
VCAT2 18 mi53 min NNE 4.1 G 5.1 69°F 71°F1021.6 hPa (+1.3)
AWRT2 26 mi53 min NE 7 G 8 71°F 72°F1021.7 hPa (+1.4)
EMAT2 32 mi53 min NE 5.1 G 8 75°F 69°F1020.9 hPa (+1.0)
KBBF 38 mi38 min E 5.1 77°F 61°F
KBQX 42 mi38 min Calm 79°F 61°F
SGNT2 47 mi53 min NE 5.1 G 8 75°F 73°F1021 hPa (+1.0)

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 mi78 minNE 710.00 miFair71°F53°F55%1022 hPa
Palacios Municipal Airport, TX21 mi60 minNE 610.00 miFair76°F55°F48%1021.6 hPa

Wind History from PKV (wind in knots)
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Last 24hrNE7NE8NE8N7NE8N5N4N5N6NE3CalmCalmCalmCalmNE3N4N3N3N4N3N3NE7NE7NE5
1 day agoN17
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N13
G19
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N11N12N6N6N4NW3NW4N5N6N3N5N4N5N6N4N4N6NE9N7
2 days agoNE8N8
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Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Wed -- 04:54 AM CDT     1.18 feet High Tide
Wed -- 06:19 AM CDT     Moonrise
Wed -- 07:28 AM CDT     Sunrise
Wed -- 11:48 AM CDT     0.96 feet Low Tide
Wed -- 06:34 PM CDT     Moonset
Wed -- 06:52 PM CDT     Sunset
Wed -- 07:52 PM CDT     1.19 feet High Tide
Wed -- 11:21 PM CDT     1.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.11.11.11.21.21.21.21.11.1111111.11.11.11.21.21.21.21.21.2

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Wed -- 02:07 AM CDT     0.68 feet Low Tide
Wed -- 06:20 AM CDT     Moonrise
Wed -- 07:24 AM CDT     0.86 feet High Tide
Wed -- 07:29 AM CDT     Sunrise
Wed -- 01:54 PM CDT     0.54 feet Low Tide
Wed -- 06:35 PM CDT     Moonset
Wed -- 06:53 PM CDT     Sunset
Wed -- 09:20 PM CDT     1.02 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.70.70.70.70.80.80.90.90.80.80.70.60.60.50.60.60.70.80.91111

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 (12,3,4,5)
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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.