Saturday, August17, 2019 L-36.com


Marine Weather and Tides
Port O'Connor, TX

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:56AMSunset 8:07PM Saturday August 17, 2019 9:30 PM CDT (02:30 UTC) Moonrise 8:39PMMoonset 7:40AM Illumination 94% Phase: Waning Gibbous; Moon at 17 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- 336 Pm Cdt Sat Aug 17 2019
Tonight..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms late.
Sunday..South winds 10 to 15 knots. Bay waters slightly choppy.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Monday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of Thunderstorms in the morning. A chance of showers. A chance of Thunderstorms in the afternoon.
Monday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers after midnight.
Tuesday..South 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 a slight chance of Thunderstorms.
Tuesday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms after midnight.
Wednesday..South winds 5 to 10 knots becoming southeast in the afternoon. Bay waters smooth. A chance of showers and a slight chance of Thunderstorms.
Wednesday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Thursday..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and a slight chance of Thunderstorms.
Thursday night..Southeast winds 10 to 15 knots becoming south 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight. A slight chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 336 Pm Cdt Sat Aug 17 2019
Synopsis for high island to matagorda ship channel out 60 nm.. A light to occasionally moderate onshore flow with slightly higher wind speeds during the overnight and early morning hours. Winds may become gusty and erratic near any Thunderstorms that do form. Seas will generally be 2 feet or less today, but will be gradually increasing to around 4 feet late tonight and Sunday. High pressure building into the region through next week will bring more relatively quiet weather.


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 172320
afdcrp
area forecast discussion
national weather service corpus christi tx
620 pm cdt Sat aug 17 2019

Discussion
Updated for 00z aviation discussion.

Aviation
Vfr will again be the prevailing conditions for the period, with
the possibility of some MVFR cig vsby in the morning hours.

Confidence in this is low in vct and crp, so left the mention out
of those tafs, but did include this in the ali TAF as confidence
is a bit higher. Winds will likely remain light to moderate for
the majority of the period with winds slightly stronger than
usual for much of the period, particularly along the coastal bend
and coastal plains. Precipitation is not a factor for the area
tonight through Sunday, with very little chance of showers or
thunderstorms over land.

Prev discussion issued 350 pm cdt Sat aug 17 2019
short term (tonight through Sunday night)...

midlevel ridge situated across texas will continue hot conditions
through the weekend. Moisture in the lower levels will continue
humid conditions at the surface, as well as slight chances for
showers to develop mainly across the gulf waters during the
overnight and early morning periods. Heat indices over 100f
degrees are expected across south texas, with a heat advisory
currently in place for the southern coastal bend this afternoon.

Will likely see another heat advisory for Sunday, although there
may be a bit more coverage than today. The only relief will be the
breezy conditions that develop in the afternoon as the thermal
gradient sets up.

Small craft exercise headlines will remain in place for portions
of the bays and gulf waters, especially for areas south of port
aransas, as moderate onshore flow develops this afternoon due to
the thermal gradient and then overnight from mixing with the low
level jet.

Overnight lows will continue to run above seasonal normal with
lows in the upper 70s across much of the inland areas to low to
mid 80s. Along the coast and rio grande.

Long term (Monday through Saturday)...

the upper ridge is expected to gradually move westward during the
period, resulting in a weakening of the upper geopotential height
field over the ern CWA msa. The GFS and ECMWF deterministic predict
greater moisture to advect onshore early in the period, with pwat
values above normal over the ERN cwa. Deterministic and ensemble
output suggest that a surface trough will enter the bay of campeche
Tuesday Wednesday and influence the msa Thursday Friday. Anticipate
that the combination of even greater moisture surface trough will
contribute to scattered convection Friday Saturday. Expect maximum
heat index values to fall below advisory criterion by Tuesday.

Marine...

hot and mostly dry conditions are expected across the middle
texas coastal waters Sunday. A few streamer showers will be
possible tonight and then again Sunday night across the gulf
waters. Moderate onshore flow is expected tonight through Sunday
night with small craft exercise caution headlines in place for the
bays and gulf waters, especially for areas south of port aransas.

Increasing moisture and weakening upper geopotential heights will
contribute to isolated scattered convection during the period,
with the greatest probability Friday Saturday owing to greater
moisture proximity of a surface trough. Persistent onshore flow
during the period, owing to a surface ridge over the NRN gulf of
mexico surface low over west texas Monday Tuesday, and due to the
proximity of the surface trough higher surface pressure to to the
n NE afterward.

Preliminary point temps pops
Corpus christi 79 97 79 96 79 0 0 10 10 10
victoria 79 100 79 97 78 0 10 0 20 10
laredo 81 107 80 105 79 0 0 0 10 10
alice 77 103 77 101 77 0 0 10 10 10
rockport 84 93 83 91 82 0 10 10 20 10
cotulla 79 106 79 104 78 0 0 0 0 10
kingsville 80 101 80 99 79 0 0 10 10 10
navy corpus 83 94 83 92 82 0 10 10 20 10

Crp watches warnings advisories
Tx... None.

Gm... None.

Ls 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 mi49 min SSE 15 G 17 85°F 88°F1009.7 hPa
MBET2 4 mi49 min S 15 G 17 86°F 1008.9 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi49 min ESE 12 G 15 87°F 90°F1010 hPa
VCAT2 18 mi49 min SSE 14 G 16 85°F 90°F1009.9 hPa
AWRT2 26 mi49 min SSE 12 G 14 85°F 90°F1009.9 hPa
EMAT2 32 mi43 min SSE 11 G 15 86°F 89°F1010.1 hPa
KBBF 38 mi36 min S 19 86°F 77°F
KBQX 42 mi36 min SSE 17 86°F 79°F
RCPT2 - 8774770 - Rockport, TX 45 mi49 min 86°F 1009.6 hPa
SGNT2 47 mi43 min SSE 8.9 G 14 87°F 89°F1010.4 hPa

Wind History for Port OConnor, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palacios Municipal Airport, TX21 mi38 minSSE 1110.00 miFair87°F75°F67%1010.2 hPa
Port Lavaca - Calhoun County Airport, TX21 mi36 minSSE 610.00 miFair85°F78°F80%1010.5 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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Last 24hrS5S4S4SE5S4S4CalmCalmCalmS4SW7S11
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1 day agoS5S3S4S5S4S3SW5SW5CalmCalmCalmW4SW5S5CalmSE10SE9S5S11
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2 days agoS5S3CalmCalmCalmNE3CalmCalmCalmCalmCalmCalmS3W6W4SW3CalmS5E12
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Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Sat -- 02:18 AM CDT     -0.15 feet Low Tide
Sat -- 06:56 AM CDT     Sunrise
Sat -- 08:40 AM CDT     Moonset
Sat -- 04:43 PM CDT     0.56 feet High Tide
Sat -- 08:02 PM CDT     Sunset
Sat -- 09:38 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0-0.1-0.1-0.1-0.100.10.20.30.40.50.50.50.50.50.60.60.60.60.50.50.40.30.2

Tide / Current Tables for Port Lavaca, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Sat -- 04:43 AM CDT     -0.08 feet Low Tide
Sat -- 06:56 AM CDT     Sunrise
Sat -- 08:41 AM CDT     Moonset
Sat -- 02:56 PM CDT     0.66 feet High Tide
Sat -- 08:03 PM CDT     Sunset
Sat -- 09:39 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.20.1-0-0.1-0.1-000.20.30.40.50.60.60.70.70.70.70.70.70.60.60.60.5

Weather Map and Satellite Images
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wmap_A
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.
Link to Loop

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Wind Forecast for Corpus Christi, TX (22,6,7,8)
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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.