Friday, October18, 2019 L-36.com


Marine Weather and Tides
Port O'Connor, TX

Version 3.4
NOTICE
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.
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 7:29AMSunset 6:56PM Friday October 18, 2019 6:53 PM CDT (23:53 UTC) Moonrise 9:30PMMoonset 10:44AM Illumination 72% Phase: Waning Gibbous; Moon at 20 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- 327 Pm Cdt Fri Oct 18 2019
Tonight..Southeast winds 5 to 10 knots becoming south after midnight. Bay waters smooth.
Saturday..South winds 5 to 10 knots. Bay waters smooth.
Saturday night..South winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight. A slight chance of showers after midnight.
Sunday..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 slight chance of showers. Isolated Thunderstorms in the afternoon.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and isolated Thunderstorms.
Monday..Southwest winds 10 to 15 knots becoming north in the afternoon. Bay waters slightly choppy. Showers and Thunderstorms likely in the morning, then a chance of showers and Thunderstorms in the afternoon.
Monday night..North winds 15 to 20 knots. Bay waters choppy.
Tuesday..Northeast winds 15 to 20 knots decreasing to 10 to 15 knots in the afternoon. Bay waters choppy becoming slightly choppy in the afternoon.
Tuesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday..East winds around 10 knots. Bay waters smooth to slightly choppy.
Wednesday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers after midnight.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 327 Pm Cdt Fri Oct 18 2019
Synopsis for high island to matagorda ship channel out 60 nm.. A light to moderate northeasterly flow will continue today. Winds will become south and south to southwest on Saturday. A stronger onshore will develop Saturday night into Monday ahead of a strong cold front. The front will cross the coastal waters late Monday afternoon or early Monday evening.


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 182056
afdhgx
area forecast discussion
national weather service houston galveston tx
356 pm cdt Fri oct 18 2019

Short term tonight through tomorrow)
Weak upper level ridging is over SE tx and this feature will get
nudged eastward tonight as a weak short wave trough over the
western high plains pushes east. A weak onshore flow coupled with
moistening of the boundary layer, clear skies and limited mixing
should set the stage for areas of fog to develop. SREF ensembles
hinting at pretty good coverage W NW of houston tonight and have
added patchy fog to the weather grids after 09z.

Have issued a coastal flood statement for the potential for some
minor coastal flooding on gulf facing beaches at high tide. Water
levels could reach 3.5-3.8 feet at high tide around 10 pm and there
could be some wave run up to the dunes on area beaches and some water on
vulnerable roads like beach dr. In surfside.

The trough will induce a weak area of low pressure to develop over
the red river valley. Weak onshore winds will develop over the
region as the low moves east. The low will drag a weak boundary
toward SE tx that will likely stall just north of the CWA Saturday
afternoon. Modest directional and speed convergence coupled with pw
values increasing to around 1.70 inches suggest that some light
precipitation will develop. Have added 20 pops for a small area around
galveston bay for Saturday afernoon.The GFS is the most aggressive with
rain chances on Saturday but it gets strong support from the nmm and
additional support from the 12z ECMWF and the href. 43

Long term (Sunday through Friday)
A somewhat negatively-tilted upper plains 5h trough will travel
into the great lakes region through Monday. At the surface, a
weak surface boundary will work its way into the CWA and wash out
somewhere near the coast early Sunday. A modest chance for early
(Sunday) morning frictional land-sea interface streamer showers
to develop along and south of i-10, or just downstream of this
weakening boundary. Onshore flow returns through the day Sunday
and this moisture return will keep a slight to low end chance for
primarily showers with isolated thunder in the forecast through
the day into evening hours. Higher moisture Sunday morning will
make for a mild sunrise in the upper 60s to lower 70s... Warming
the afternoon well up into the middle to upper 80s.

A cold front will come across the region late Monday morning into
the afternoon and increase Monday's rain chances to likely. A
decent westerly push of a near 1016 mb high out of the rockies
should have the front entering our northern counties by 10 or 11
am and then have it off the coast by the late afternoon. Widespread
swath of rain accompanying the front as it travels on through
with QPF in the half an inch to 2 inch range still looking like
the most likely scenario for the majority of southeastern texas.

The area will get clipped by the tail end of a northeastern-lifting
jet so, with the best frontogenesis occurring during daytime
warmth, there is a higher prob of more areawide thunder.

High pressure expands in from late Monday through Tuesday with its
eastern exit on Wednesday swinging northerlies back onshore by
Wednesday afternoon. Nil rain chances will exist through late week
with subsequent mornings warming up from the chilly 50s (Tuesday
am) to back into the 60s by Thursday morning. Cold air advection
behind Monday's frontal passage will make Tuesday the coolest day
of the week... Afternoons warming from Tuesday's 70s into the 80s
by mid Thursday afternoon. Southerlies and moisture increase
ahead of the next cold front that currently slated for a Friday
arrival. 31

Preliminary point temps pops
College station (cll) 60 88 67 89 68 0 10 10 30 60
houston (iah) 63 87 73 87 74 0 20 10 30 40
galveston (gls) 71 84 78 85 76 0 20 20 20 40

Hgx watches warnings advisories
Tx... None.

Gm... None.

Short... 43
long... 31


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 SE 11 G 13 77°F 79°F1006.8 hPa (-0.7)
MBET2 4 mi53 min SSE 9.9 G 11 76°F 78°F1005.9 hPa (-0.6)
SDRT2 - 8773037 - Seadrift, TX 17 mi53 min ESE 8 G 9.9 78°F 76°F1007 hPa (-0.6)
VCAT2 18 mi53 min SE 13 G 14 74°F 74°F1006.6 hPa (-0.7)
AWRT2 26 mi59 min ESE 5.1 G 8 78°F 73°F1006.3 hPa
EMAT2 32 mi59 min SE 5.1 G 7 75°F 75°F1007 hPa
KBBF 38 mi18 min E 6 140°F 131°F
KBQX 42 mi18 min Calm 79°F 70°F
RCPT2 - 8774770 - Rockport, TX 45 mi53 min 78°F 1006.7 hPa (-1.2)
SGNT2 47 mi53 min ESE 7 G 8.9 76°F 75°F1007 hPa (-0.3)

Wind History for Port OConnor, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palacios Municipal Airport, TX21 mi60 minSSE 910.00 miFair78°F68°F71%1007.3 hPa
Port Lavaca - Calhoun County Airport, TX21 mi58 minSE 910.00 miFair82°F67°F62%1007.1 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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Last 24hrNE7NE6N6N4N5NE9NE6E9NE8NE5E6NW4--N7NE6NE4NE4E3NE3CalmE3E4SE8SE9
1 day agoN11
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2 days agoS11S6S6S5S4S3S3N4NW5CalmN7NW4NW6N9N6NE9N10
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Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Fri -- 03:02 AM CDT     1.40 feet High Tide
Fri -- 07:28 AM CDT     Sunrise
Fri -- 11:44 AM CDT     Moonset
Fri -- 02:51 PM CDT     0.46 feet Low Tide
Fri -- 06:53 PM CDT     Sunset
Fri -- 10:29 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.41.41.41.41.41.31.21.110.90.80.60.50.50.50.50.60.70.80.911.11.2

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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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 (19,4,5,8)
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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.