Tuesday, August22, 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 7:00AMSunset 8:00PM Tuesday August 22, 2017 7:48 PM CDT (00:48 UTC) Moonrise 6:48AMMoonset 7:50PM Illumination 1% Phase: New Moon; Moon at 1 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
    EDIT      (on/off)   Help
GMZ330 Matagorda Bay- 356 Pm Cdt Tue Aug 22 2017
Tonight..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms after midnight.
Wednesday..Northeast winds 5 to 10 knots becoming east in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Wednesday night..Southeast winds 5 to 10 knots becoming east after midnight. Bay waters smooth. A slight chance of showers and Thunderstorms.
Thursday..Northeast winds 5 to 10 knots becoming east 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. A chance of showers and Thunderstorms.
Thursday night..East winds 15 to 20 knots. Bay waters choppy. A chance of showers and Thunderstorms.
Friday..Northeast winds 20 to 25 knots becoming east 25 to 30 knots in the afternoon. Bay waters rough becoming very rough in the afternoon. Showers and Thunderstorms likely. Some Thunderstorms may produce gusty winds, and heavy rainfall.
Friday night..Southeast winds around 30 knots becoming south after midnight. Bay waters very rough. Showers and Thunderstorms. Some Thunderstorms may produce gusty winds, and heavy rainfall.
Saturday..South winds 25 to 30 knots decreasing to 20 to 25 knots in the afternoon. Bay waters very rough becoming rough in the afternoon. Showers and Thunderstorms likely. Some Thunderstorms may produce gusty winds, and heavy rainfall.
Saturday night..South winds 20 to 25 knots. Bay waters rough. Showers and Thunderstorms likely. Some Thunderstorms may produce gusty winds, and heavy rainfall.
Sunday..Southwest winds 15 to 20 knots decreasing to 10 to 15 knots in the afternoon. Bay waters choppy becoming slightly choppy in the afternoon. Showers and Thunderstorms likely. Some Thunderstorms may produce gusty winds, and heavy rainfall.
Sunday night..Southwest winds around 15 knots becoming west after midnight. Bay waters slightly choppy to choppy becoming slightly choppy after midnight. Showers and Thunderstorms likely. Some Thunderstorms may produce gusty winds, and heavy rainfall.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 356 Pm Cdt Tue Aug 22 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Light winds and low seas are expected into Wednesday. SWells from the remnants of harvey over the southern gulf are expected to arrive by Thursday. This could also lead to higher tides affecting the upper texas coast by Thursday night and Friday morning. Mariners should continue to Monitor the possible redevelopment of harvey and its eventual track. If harvey reforms, higher winds and seas will be possible during the last part of the week into the weekend. Mariners are urged to keep up with the latest forecast.

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


Area Discussion for - Houston/Galveston, TX
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 khgx 222336
afdhgx
area forecast discussion
national weather service houston galveston tx
636 pm cdt Tue aug 22 2017

Aviation
Isolated daytime showers continue to dissipate early this
evening with dry conditions expected at the terminal overnight.

However, water vapor imagery shows an upper low spinning over the
northwest gulf this evening and if this feature wobbles farther to
the west tonight as afternoon guidance indicated, a few pre-dawn
shra or even tsra will be possible along the coast (possibly
impacting galveston). Have left out of TAF for now due to low
confidence but may need to be included with the 06z update.

Daytime heating will again result in isolated to scattered
shra tsra developing near conroe the houston terminals and points
south by early afternoon, with an approaching frontal boundary
looking to result in a second round of shra near college station
and huntsville late in the TAF period. Otherwise, expectVFR
conditions with variable winds less than 8 knots through the
period.

Huffman

Prev discussion issued 353 pm cdt Tue aug 22 2017
discussion...

not much convective coverage this afternoon as the drier air mass
residing over southeastern texas seems to have won out... Highest
moisture still remains centered over extreme southeastern texas.

When an isolated shower does form along one of the numerous meso-
breezes it quickly becomes outflow dominant and fizzes out.

Surface analysis depicts a southern plains boundary sliding down
into central ok this afternoon. This boundary is forecast to sink
further south into the piney woods eastern texas by tomorrow
afternoon. Thus... Another focus point for which warmth-of-the-
day showers and thunderstorms could develop. Overnight minimums
will not surprisingly fall much... Inland middle 70s to lower 80s
along the coast. Low end chance pops for any short lived -tsra
tomorrow during the day with the highest probs occurring across
the coastal and second tier counties. Maximum temperatures in the
mean middle 90s (upper 90s across the far interior) will equate to
maximum heat indices in the 102 to 106 f range.

The buzz around the re-development of harvey is ramping up today
as can be expected with the deterministic suite coming into better
alignment through days 3 thorough 5. While confidence remains low
until the wave crosses back into the bay of campeche tomorrow and
re-forms and possibly re-forms a closed off low... The suite all
agree to deepen the system to at least a strong tropical storm or
weak hurricane and track it towards the lower to middle texas
coastline from tomorrow night through Friday morning. Once this
system makes landfall Friday or Saturday the slow storm movement
will place high rainfall-leading-to-flooding the main threat with
gusty (sub)tropical storm force winds a secondary threat. Our
message is 4 to 8 inches of widespread rainfall from Friday
through early Tuesday with localized amounts of between 8 to 16
inches (double widespread) being a reasonable possibility per the
slow storm movement. Granted harvey is not regained the shadow of
his former self as of this writing but it is hard ignore that
every deterministic solution likes this "signal" of a landfalling
tc along the texas coastline by this weekend. The main con to
formation... Or to play devil's advocate to just jumping on the
model train... Would be the amount of dry air that the system will
be ingesting going into Thursday. W v imagery does show quite a
bit of mid-upper dry air moving into the southern bay of campeche
and this could be a major inhibitor for development. The two main
pros for harvey making it a bad week for us will be the fact that
(1) this wave is moving into a height and wind weakness channel
carved out by the western gulf inverted trough between the great
basin and bermuda ridges and (2) sea surface temperatures over the
western gulf are currently between 85 and 88 f (based on the buoy
data). Although we may want to get caught up in the potential
specifics of this storm this may be a great time to begin the
preparedness message and focus on the impacts... Do you have your
hurricane preparedness plan in place and can you enact this plan
within the next couple of days? 31
marine...

light winds and low seas are expected to continue through
Wednesday. Should begin to see swells from the tropical system
over the yucatan by slowly increase by late Wednesday into
Thursday. There is considerable uncertainty as to the development
and eventual landfall of the system. The latest models develop the
system back into harvey with landfall somewhere on the southern
texas coastline sometime late Friday. If this scenario pans out,
high seas and strong winds will affect the upper texas coastal
waters at least late Thursday into Saturday morning. Tides along
the coast could become a problem as early as Thursday afternoon
and night given the swells and strong onshore winds. The latest
models show the potential for actual tide levels to reach or
exceed 3 feet for the high tide times either Thursday night or
Friday morning.

Mariners are urged to closely monitor the latest forecasts through
the weekend. 40
college station (cll) 76 98 76 95 76 10 30 30 40 40
houston (iah) 77 95 77 94 77 10 30 20 40 40
galveston (gls) 82 91 83 91 82 20 30 20 40 50
hgx watches warnings advisories...

tx... None.

Gm... None.

Preliminary point temps pops
College station (cll) 76 98 76 95 76 10 30 30 40 40
houston (iah) 77 95 77 94 77 10 30 20 40 40
galveston (gls) 82 91 83 91 82 20 30 20 40 50

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... 45
aviation marine... 14


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 0 mi49 min ESE 12 G 15 86°F 1014.6 hPa (-1.2)
MBET2 4 mi49 min SSE 13 G 15 85°F 88°F1013.7 hPa (-1.2)
SDRT2 - 8773037 - Seadrift, TX 17 mi49 min ESE 9.9 G 15 87°F 90°F1014.9 hPa (-1.1)
VCAT2 18 mi49 min ESE 16 G 19 86°F 90°F1014.5 hPa (-1.1)
AWRT2 26 mi49 min ESE 9.9 G 13 86°F 90°F1014.9 hPa (-1.1)
EMAT2 32 mi49 min ESE 9.9 G 14 86°F 91°F1014.6 hPa (-1.0)
KBBF 38 mi34 min 2.9 86°F 75°F
MAXT2 - Mission-Aransas Reserve, TX 40 mi49 min SE 13 1015 hPa (-1.0)
CPNT2 40 mi49 min SE 12 G 13 85°F 89°F
KBQX 42 mi34 min E 7 88°F 88°F
RCPT2 - 8774770 - Rockport, TX 45 mi49 min SE 11 G 15 86°F 90°F1014.4 hPa (-1.1)
SGNT2 47 mi49 min ESE 8.9 G 12 86°F 91°F1014.7 hPa (-1.0)

Wind History for Port OConnor, TX
(wind in knots)    EDIT      (on/off)   Help
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last
24hr
SE13
SE14
SE15
SE15
SE15
SE13
G16
SE11
SE9
S9
S10
S4
SW2
SW1
W1
NE2
NE3
SE8
SE10
E9
SE9
G12
SE10
G13
SE12
G15
SE12
G15
SE12
G15
1 day
ago
SE13
SE15
SE14
G17
SE13
SE12
SE11
SE11
SE10
SE8
SE8
SE7
SE7
SE7
SE7
G10
SE7
SE6
SE6
G9
E8
G11
E11
G14
SE10
G13
SE11
SE10
G13
SE11
SE14
2 days
ago
SE14
SE14
SE15
SE13
G17
S14
G17
SE14
S14
G17
S9
G15
S9
S8
G11
S6
SW6
S6
S4
SE7
SE6
SE6
SE6
SE7
SE7
G11
SE11
SE12
SE11
G14
SE14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Lavaca - Calhoun County Airport, TX21 mi69 minSE 1110.00 miFair88°F71°F57%1014.9 hPa
Palacios Municipal Airport, TX21 mi56 minSSE 1010.00 miFair85°F73°F68%1014.9 hPa

Wind History from PKV (wind in knots)
8
PM
9
PM
10
PM
11
PM
-12
PM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last 24hrSE9SE7SE7SE7SE5SE3CalmCalmCalmCalmNW3N4N3CalmCalmE5E7SE9
G14
E12SE11SE11SE13E11SE12
1 day agoSE10SE8SE7SE6SE5SE3CalmCalmCalmCalmCalmNW4N3NE8E7SE7E9SE12SE10
G15
SE12
G17
E12E13SE13SE10
2 days agoS7SE6SE4S5S4S4S5S3CalmS3CalmCalmCalmE3CalmE6SE10E9SE9E10E13SE11SE9
G14
SE11

Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Port O'Connor
Click for Map
Tue -- 12:35 AM CDT     0.02 feet Low Tide
Tue -- 06:58 AM CDT     Sunrise
Tue -- 07:48 AM CDT     Moonrise
Tue -- 10:28 AM CDT     0.68 feet High Tide
Tue -- 01:09 PM CDT     0.67 feet Low Tide
Tue -- 02:42 PM CDT     0.67 feet High Tide
Tue -- 07:57 PM CDT     Sunset
Tue -- 08:49 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
000.10.10.20.30.40.50.60.70.70.70.70.70.70.70.70.60.60.60.50.40.30.2

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
   EDIT      (on/off)   Help   One Week of Data
Port Lavaca
Click for Map
Tue -- 03:29 AM CDT     -0.03 feet Low Tide
Tue -- 06:59 AM CDT     Sunrise
Tue -- 07:48 AM CDT     Moonrise
Tue -- 06:56 PM CDT     0.83 feet High Tide
Tue -- 07:58 PM CDT     Sunset
Tue -- 08:50 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.10-0-000.10.30.40.50.60.70.70.70.70.70.80.80.80.80.80.80.70.6

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Houston/Galveston, TX (20,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Corpus Christi, TX
   (on/off)   Help
weather_mapweather_map weather_map

Gulf Stream Current


Ad by Google

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.