Monday, January27, 2020
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Marine Weather and Tides
Port O'Connor, TX

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:17AMSunset 6:03PM Monday January 27, 2020 7:03 PM CST (01:03 UTC) Moonrise 9:14AMMoonset 8:40PM Illumination 9% 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- 318 Pm Cst Mon Jan 27 2020
Tonight..Southeast winds 10 to 15 knots. Bay waters slightly choppy. Patchy fog. A chance of showers and isolated Thunderstorms after midnight.
Tuesday..Southeast winds 5 to 10 knots becoming southwest in the afternoon. Bay waters smooth becoming smooth to slightly choppy in the afternoon. Showers likely in the morning. Isolated Thunderstorms. A chance of showers in the afternoon.
Tuesday night..Northwest winds 15 to 20 knots. Bay waters choppy.
Wednesday..Northwest winds 15 to 20 knots becoming north 10 to 15 knots in the afternoon. Bay waters choppy becoming slightly choppy in the afternoon.
Wednesday night..Northeast winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers late.
Thursday..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Thursday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Friday..North winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Friday night..Northwest winds 5 to 10 knots. Bay waters smooth.
Saturday..Northwest winds around 10 knots. Bay waters smooth to slightly choppy.
Saturday night..West winds 5 to 10 knots. Bay waters smooth.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 318 Pm Cst Mon Jan 27 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Rain chances will be increasing Tuesday as another storm system moves across the area. The cold front associated with this system will bring strong gusty offshore winds to the area Tuesday night with small craft advisories likely for all of our coastal waters most of Wednesday. Another storm system arrives for Thursday and Friday. The weekend looks dry.


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 272347 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 547 PM CST Mon Jan 27 2020

AVIATION [00Z TAF Issuance].

Upper level trough continues to churn east across New Mexico and should reach Texas tonight into tomorrow morning. Surface low should deepen over north Texas tomorrow morning with a line of convection ahead of a dryline in central Teas. This line should push through the area during the day. Until then visible satellite imagery and obs show a stubborn low stratus cloud deck which may hold through the night. Warm advection will be enough to keep MVFR decks possible through the night with IFR possible in the morning mainly for KIAH/KCLL/KUTS/KCXO. To the south, ceilings should be MVFR but could be more BKN/SCT than BKN/OVC. OVC conditions do set in as the line of showers/storms approaches the area during the day. Ceilings do not improve until behind a cold front that pushes through Tuesday evening/night.

Overpeck

PREV DISCUSSION /Issued 352 PM CST Mon Jan 27 2020/.

SHORT TERM [Tonight Through Tuesday Night].

Clouds have been slow to clear across parts of Southeast Texas today resulting in cooler than expected afternoon highs (so far). Storm system and associated cold front are still on schedule to move into and across the area tomorrow. Before its arrival, look for clouds and possible fog development to return tonight with some showers and possible thunderstorms beginning to enter our northwest areas as early as around midnight but more likely after 3 AM. This activity will spread eastward during the day, and it should be all to the east of the I-45 corridor around or shortly after 6 PM when the cold front moves through the area. Look for cooler, drier and breezy/windy conditions Tuesday night and on into Wednesday morning. 42

LONG TERM [Wednesday Through Monday].

Behind the departure of Tuesday's cold front, moderate northwest winds and benign weather conditions will prevail on Wednesday. Highs should reach the upper 50s on Wednesday afternoon as CAA behind the front supplies cooler and drier air to SE Texas, while nighttime lows should dip into the mid to upper 40s inland and near 50 along the coast. Our next chance for precipitation comes late in the week as an upper trough/cutoff low digs into the southwestern CONUS by Thursday afternoon, allowing for a return to an onshore flow regime and periods of showers on Thursday night and into Friday morning. Rainfall chances still look to be best along the Interstate 10 corridor and along the coast, while amounts once again should be fairly low as PWAT values look to remain in the vicinity of 0.75 to 1.0 in. As this system kicks eastward by late friday, surface high pressure moves into the area in its wake which should provide a dry and seasonable weekend.

Cady

MARINE.

Could see some more fog development this evening and overnight ahead of the Tuesday storm system. Winds are expected to get close to caution levels across our offshore waters, so have gone ahead and hoisted caution flags for our 20-60 nm waters overnight. Winds are expected to come back down during the day tomorrow, then pick back up and swing around to the west and northwest after the cold front and associated showers (and maybe isolated thunderstorms too) move through the area in the mid to late afternoon through early evening hours. Behind the front on Tuesday night and Wednesday, caution flags and possible advisories will be needed for the Bays, and advisories will be needed for the 00-60 nm waters. These rough conditions will improve late Wednesday afternoon and on into Wednesday night as winds come around to the north and northeast and seas begin to come down. Thursday and Friday look wet again as the next system come into the picture. Still anticipating a dry weekend with mainly moderate northwest winds. 42

PRELIMINARY POINT TEMPS/POPS.

College Station (CLL) 52 69 42 58 42 / 60 90 30 0 0 Houston (IAH) 53 67 44 60 44 / 10 80 40 0 0 Galveston (GLS) 57 67 49 58 50 / 10 80 40 0 0

HGX WATCHES/WARNINGS/ADVISORIES.

TX . None. GM . SMALL CRAFT SHOULD EXERCISE CAUTION from 9 PM CST this evening through late tonight for the following zones: Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM . Waters from High Island to Freeport TX from 20 to 60 NM.



AVIATION . Overpeck


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 0 mi52 min E 13 G 16 61°F 66°F1013.5 hPa
MBET2 4 mi46 min SE 13 G 16 61°F 62°F1012.6 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi52 min ENE 6 G 8 61°F 68°F1014 hPa
VCAT2 18 mi52 min ESE 15 G 18 60°F 65°F1013.6 hPa
AWRT2 26 mi52 min E 9.9 G 13 62°F 65°F1013 hPa
EMAT2 32 mi46 min E 11 G 14 60°F 63°F1014 hPa
KBBF 38 mi29 min SE 8.9 66°F 57°F
KBQX 42 mi29 min E 6 G 13 63°F 55°F
RCPT2 - 8774770 - Rockport, TX 45 mi52 min 64°F 1013.1 hPa
SGNT2 47 mi46 min E 8 G 13 60°F 64°F1014.5 hPa

Wind History for Port OConnor, TX
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palacios Municipal Airport, TX21 mi71 minE 1210.00 miPartly Cloudy60°F53°F78%1014.2 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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NE12NE7N6N7N6N7--NE7N7--N5--------NE8
1 day agoE3CalmCalmCalmW6NW4N14
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2 days agoE7E7E7SE9E10SE12SE12SE9SE10SE9SE8SE9SE10SE8SE9SE9SE6S6S5CalmNW3CalmCalmCalm

Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Mon -- 01:48 AM CST     0.38 feet High Tide
Mon -- 07:15 AM CST     Sunrise
Mon -- 09:13 AM CST     Moonrise
Mon -- 01:54 PM CST     -0.52 feet Low Tide
Mon -- 06:00 PM CST     Sunset
Mon -- 08:40 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.40.40.40.40.30.30.20.1-0.1-0.2-0.3-0.4-0.5-0.5-0.5-0.4-0.3-0.2-0.10.10.10.20.3

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_A
GEOS Local Image of SouthCentralPlains    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

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (20,4,5,8)
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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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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 numerous 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.