Monday, June26, 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 6:30AMSunset 8:31PM Monday June 26, 2017 12:18 PM CDT (17:18 UTC) Moonrise 8:17AMMoonset 9:57PM Illumination 7% 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-galveston Bay- 1011 Am Cdt Mon Jun 26 2017
Rest of today..East winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. Scattered showers and Thunderstorms.
Tonight..East winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight. A chance of showers and Thunderstorms.
Tuesday..East winds 5 to 10 knots becoming southeast in the afternoon. Bay waters smooth becoming smooth to slightly choppy in the afternoon. 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 increasing to 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. A chance of showers and Thunderstorms.
Wednesday night..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Thursday..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Thursday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms in the evening, then a chance of showers and Thunderstorms after midnight.
Friday..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1011 Am Cdt Mon Jun 26 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore winds will increase late in the week as an area of low pressure moves across the central plains. Periods of showers and Thunderstorms will affect the coastal waters through Friday with a gradual decrease in activity toward the weekend.

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


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 261654
afdhgx
area forecast discussion
national weather service houston galveston tx
1154 am cdt Mon jun 26 2017

Aviation
Scattered showers and storms should start to develop as temps
warm into the mid 80's. Will maintain vcts wording for all taf
sites except for kuts which appears to be in much drier air per
satellite derived pw fields. BrokenVFR CIGS possible for much of
the aftn with residual cirrus overnight. A weak pressure gradient
will keep light winds in place through tonight. Fcst soundings
show some dry air beneath the cloud bases so some gusty winds near
storms will be possible. Short term guidance is aggressive with
rain chances near the coast between 09-12z and added vcsh for both
klbx and kgls. Convective temps are in the mid 80's again on
Tuesday and expect convection to redevelop by early Tuesday
afternoon. 43

Prev discussion issued 1012 am cdt Mon jun 26 2017
update...

surface high over southern missouri continues to shift to the
south, with associated drier air over the northern and northeastern
counties (goes-16 precipitable water imagery showing 1.6-1.7
inches) likely limiting rain chances for those areas this
morning. The main update to the forecast was to lower pops over
the northeast through the remainder of the morning as a result,
with isolated to scattered showers and storms expected to develop
inland this afternoon as convective temperatures between 84 and
87 are reached. The khgx vad wind profiler shows some slightly
stronger low level winds than the past few mornings (easterly
around 10 knots) and expect storm motions today to be a bit faster
than what was observed this weekend. Forecast soundings do show a
bit of an inverted-v (indicating downdraft acceleration will be
possible from evaporational cooling), so gusty outflow winds will
certainly be possible in addition to brief heavy rain today...

with additional showers or storms developing along these outflow
boundaries.

Huffman
prev discussion... Issued 437 am cdt Mon jun 26 2017
discussion...

slightly drier air has backdoored into northeast parts of the
region overnight with observed dewpoints currently in the mid to
upper 60s there. Closer to the coast, surface troffiness
continues and is providing a convergent zone for another round of
shra tstms to develop. These will probably persist into the early
& mid morning hours then, like the past few days, eventually
transition inland later in the morning & afternoon with daytime
heating. Convective temps a bit higher, probably ~85-86f, so it
could take a little longer for inland expansion. Can't rule out
some localized heavy downpours W pw's near 2". Also could see
some gusty winds in the stronger cells given the profiles of some
of the fcst soundings.

Guidance doesn't project the remnants of the disturbance now
situated across NW tx to make its way into SE tx until late
tonight & tue, but still worth keeping an eye on in case timing
and or details change. Wx on tues-thurs doesn't look a whole lot
different that the previous several days. Upper weakness should
linger across the area along with respectable amounts of moisture
to work with. We should start seeing a bit less overall precip
coverage going into the weekend as mid upper ridging builds back
into the area. 47
marine...

little change to overall marine forecast, with periods of showers
and thunderstorms possible across the coastal waters through the
upcoming week. Light east to southeast flow is expected until mid
week, when winds and therefore seas increase again in response to a
developing surface low over the lee of the rockies. Caution or
advisory flags may be required for this increase in winds seas as
early as Wednesday.

Continued east to southeast flow this week will promote tide levels
around 1-1.5 feet above normal and strong rip currents. However,
tide levels should remain below critical thresholds for coastal
flooding issues. 11

Preliminary point temps pops
College station (cll) 88 72 89 72 91 40 30 50 20 40
houston (iah) 87 73 88 73 89 50 30 50 20 40
galveston (gls) 86 79 86 79 87 40 50 50 50 50

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... 14
aviation marine... 43


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 0 mi49 min NE 12 G 13 79°F 1018.2 hPa
MBET2 4 mi49 min SE 16 G 19 78°F
SDRT2 - 8773037 - Seadrift, TX 17 mi49 min NNW 1.9 G 2.9 78°F 85°F1018.8 hPa
VCAT2 18 mi49 min SE 9.9 G 14 81°F 84°F1018.3 hPa
AWRT2 26 mi49 min NNE 13 G 16 81°F 83°F1018.3 hPa
EMAT2 32 mi49 min E 7 G 8.9 82°F 84°F1017.6 hPa
KBBF 38 mi44 min E 12 82°F 73°F
MAXT2 - Mission-Aransas Reserve, TX 40 mi79 min E 8.9
CPNT2 40 mi49 min ENE 8 G 9.9 82°F 85°F
KBQX 42 mi44 min 4.1 84°F 84°F
RCPT2 - 8774770 - Rockport, TX 45 mi49 min E 8 G 11 83°F 85°F1017.6 hPa
SGNT2 47 mi49 min ENE 9.9 G 12 82°F 85°F1017.7 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 mi24 minN 010.00 miMostly Cloudy82°F75°F82%1018.3 hPa
Palacios Municipal Airport, TX21 mi26 minNE 610.00 miMostly Cloudy84°F73°F72%1018 hPa

Wind History from PKV (wind in knots)
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Last 24hrCalmCalmCalmCalmE14
G18
SE10
G14
SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE5CalmCalm
1 day agoCalmNW13
G18
CalmCalmCalmCalmSE11
G15
CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE7
G16
2 days agoS8S9SE11S11
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G15
SE12SE12SE8SE6SE6CalmCalmCalmCalmCalmCalmCalmCalmCalmSE8SE14S9SE10

Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Mon -- 01:37 AM CDT     -0.41 feet Low Tide
Mon -- 06:30 AM CDT     Sunrise
Mon -- 09:17 AM CDT     Moonrise
Mon -- 01:05 PM CDT     0.64 feet High Tide
Mon -- 08:26 PM CDT     Sunset
Mon -- 10:56 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.3-0.4-0.4-0.4-0.3-0.100.20.30.40.50.60.60.60.60.60.60.60.50.40.30.20.1-0.1

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Mon -- 04:41 AM CDT     -0.17 feet Low Tide
Mon -- 06:30 AM CDT     Sunrise
Mon -- 09:17 AM CDT     Moonrise
Mon -- 04:17 PM CDT     1.11 feet High Tide
Mon -- 08:28 PM CDT     Sunset
Mon -- 10:57 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.20-0.1-0.2-0.2-0.100.20.30.50.70.80.911.11.11.11.1110.90.80.6

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 Houston/Galveston, TX (13,3,4,5)
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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.