Saturday, July21, 2018 L-36.com


Marine Weather and Tides
Port O'Connor, TX

Version 3.4
What's New / NOTES
7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:42AMSunset 8:26PM Saturday July 21, 2018 8:24 PM CDT (01:24 UTC) Moonrise 2:25PMMoonset 1:03AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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- 331 Pm Cdt Sat Jul 21 2018
Tonight..South winds 10 to 15 knots becoming southwest after midnight. Bay waters slightly choppy.
Sunday..Southwest winds around 10 knots becoming south in the afternoon. Bay waters smooth to slightly choppy.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Monday and Monday night..Southwest winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday..Southwest winds 5 to 10 knots becoming south in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms in the afternoon.
Tuesday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms.
Wednesday..South winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms.
Wednesday night..South winds around 10 knots becoming 5 to 10 knots after midnight. Bay waters smooth to slightly choppy becoming smooth after midnight.
Thursday..South winds 5 to 10 knots becoming southeast in the afternoon. Bay waters smooth.
Thursday night..South winds around 10 knots. Bay waters smooth to slightly choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 331 Pm Cdt Sat Jul 21 2018
Synopsis for high island to matagorda ship channel out 60 nm.. A light to occasionally moderate south to southwest flow is expected to persist through Monday, a weak frontal boundary around or just north of the area might bring variable or a light offshore flow Monday night through Wednesday. A few showers and Thunderstorms will be possible with this boundary.

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 212309
afdhgx
area forecast discussion
national weather service houston galveston tx
609 pm cdt Sat jul 21 2018

Aviation [00z TAF issuance]
In general, expectVFR condtions through the next 24 hours expect
for maybe the morning time frame of 11-15z. Like the last few
mornings, there could be a sct bkn ovc MVFR deck that forms over
the area. MVFR conditions will be brief and once mixing occurs,
cloud cover will become mostly clear. Winds will generally be
under 10 knots from the SW mainly.

Overpeck

Prev discussion issued 309 pm cdt Sat jul 21 2018
Discussion
Cirrus continuing to stream in from the northeast have been the
saving grace for temperatures not exceeding 100 degrees in
southeast texas, as of 3 pm. With several more hours of heating
to go, areas north of a brenham to lufkin line may exceed 100
today. Amdar soundings show that the atmosphere has not mixed as
much as previous days, keeping dew points in the mid 70s around
houston. Heat indices are already soaring above 105 and are
expected to peak in the 105-110 range this afternoon. The ongoing
heat advisory remains in effect through 8 pm cdt. High
temperatures tomorrow will increase near 100-103 degrees inland
and low to mid 90s in the coastal counties. Heat index values will
peak at 105-110 degrees for the third day in a row. It is
important to keep in mind that heat becomes more dangerous the
longer it is around. Please limit all outdoor activities this
weekend to the early morning or late at night and stay hydrated.

The fourth heat advisory for southeast texas this year will be in
effect Sunday from noon to 8 pm.

Monday looks to be the warmest day of this heat wave with high
temperatures approaching 105 degrees in the extreme northwestern
portions of the area and most of the inland counties at or above
100 f. Although model soundings indicate there will be more mixing
on Monday in the northern zones, high ambient temperatures above
103 will meet heat advisory criteria and may potentially require
an excessive heat warning. Heat indices will peak in the 105-111
range.

The upper level ridge begins to slide westward toward the four
corners region early next week, leaving falling 500 dm heights in
its wake. Guidance continues to support a weak backdoor cold front
passing through the region Monday night early Tuesday morning.

This front coupled with falling upper level heights will "cool" us
off to the mid to upper 90s across the region, which may remove a
need for a heat advisory Tuesday. The NAM is the only guidance
suggesting precipitation with the frontal passage, as the GFS has
dried out to match the ecmwf. Have trended toward the more
consistent dry solution for the frontal passage and kept pops
limited to 20%. The boundary may stall over the area through
Thursday, increasing surface convergence. Coupled with higher pwat
values Tuesday and Wednesday near 2 inches, 20 pops are in place
through midweek next week. The boundary eventually mixes out
Wednesday into Thursday, leaving a mostly dry end of next week
with high temperatures in the mid to upper 90s and lows in the
upper 70s.

22

Marine
Light to occasionally moderate south to southwest winds are
expected to persist through Monday. At times during the overnight
hours, nocturnal cooling inland may produce enough of a thermal
gradient along the coast to result in winds nearing caution
levels. Seas are expected to remain in a 1 to 3 foot range. Monday
night through Wednesday, a weak frontal boundary around or just
north of the area might bring variable or a light offshore flow to
the waters along with a few showers and thunderstorms. More
persistent but mainly light south to southeast winds are expected
to return to the area toward the end of the week. 42

Fire
Even though temperatures will be hot through Monday, elevated
fire weather conditions are not anticipated due to light winds.

However, no rain chances and very low afternoon humidities may
make conditions favorable for isolated fire starts. Precautions
(make sure to not idle or drive vehicles in tall grasses and
secure or remove loose chains on vehicles and or farm equipment)
should continue. 42

Preliminary point temps pops
College station (cll) 76 103 77 104 78 0 0 0 0 10
houston (iah) 79 101 78 102 79 0 0 0 0 20
galveston (gls) 82 91 82 91 82 10 0 0 0 20

Hgx watches warnings advisories
Tx... Heat advisory until 8 pm cdt this evening for the following
zones: austin... Brazoria
islands... Brazos... Burleson... Chambers... Coastal
brazoria... Coastal galveston... Coastal harris... Coastal
jackson... Coastal matagorda... Colorado... Fort
bend... Galveston island and bolivar
peninsula... Grimes... Houston... Inland brazoria... Inland
galveston... Inland harris... Inland jackson... Inland
matagorda... Madison... Matagorda
islands... Montgomery... Northern liberty... Polk... San
jacinto... Southern
liberty... Trinity... Walker... Waller... Washington... Wharton.

Heat advisory from noon to 8 pm cdt Sunday for the following
zones: austin... Brazoria
islands... Brazos... Burleson... Chambers... Coastal
brazoria... Coastal galveston... Coastal harris... Coastal
jackson... Coastal matagorda... Colorado... Fort
bend... Galveston island and bolivar
peninsula... Grimes... Houston... Inland brazoria... Inland
galveston... Inland harris... Inland jackson... Inland
matagorda... Madison... Matagorda
islands... Montgomery... Northern liberty... Polk... San
jacinto... Southern
liberty... Trinity... Walker... Waller... Washington... Wharton.

Gm... None.

Aviation... Overpeck


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 mi43 min SSE 13 G 15 84°F 89°F1014.4 hPa
MBET2 4 mi37 min S 11 G 13 94°F1013.6 hPa
SDRT2 - 8773037 - Seadrift, TX 17 mi43 min SE 12 G 15 87°F 91°F1014.5 hPa
VCAT2 18 mi37 min S 14 G 15 85°F 94°F1014.5 hPa
AWRT2 26 mi43 min SSE 12 G 16 85°F 90°F1014.4 hPa
EMAT2 32 mi43 min SSE 11 G 13 85°F 91°F1014.2 hPa
KBBF 38 mi30 min S 11 86°F 75°F
MAXT2 - Mission-Aransas Reserve, TX 40 mi85 min SE 8 1015 hPa (-1.0)
KBQX 42 mi30 min S 9.9 84°F 77°F
SGNT2 47 mi37 min S 8 G 12 85°F 89°F1014.5 hPa

Wind History for Port OConnor, TX
(wind in knots)    EDIT      (on/off)   Help
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
8
PM
Last
24hr
S13
S14
S15
S16
S12
G16
S11
S10
S8
S7
S8
S5
S7
S10
SW9
G12
SW7
G10
SW10
G13
S9
G13
S12
S11
SE10
S12
S12
G15
S13
S12
G15
1 day
ago
S16
S17
S16
S16
S14
S13
S13
S13
G16
SW10
G15
S9
S8
S6
S11
G15
S14
SW14
G18
S12
G16
SW11
G15
S11
G18
S11
G14
S8
G11
S13
S11
G14
S12
G15
S14
G17
2 days
ago
S16
S16
S16
S16
S16
S17
S14
G17
S12
G15
S11
G14
SW12
S11
G14
SW12
G17
SW14
G18
SW14
G18
SW13
G17
SW13
G16
SW14
G19
S12
G15
S14
G17
S12
G15
S15
S14
S17
S17
G21

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Lavaca - Calhoun County Airport, TX21 mi30 minS 710.00 miFair88°F76°F68%1014.9 hPa
Palacios Municipal Airport, TX21 mi32 minS 1010.00 miFair86°F78°F77%1014.6 hPa

Wind History from PKV (wind in knots)
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
8
PM
Last 24hrS7S6S5S5S6S6S3CalmS3S3SW4CalmCalmS7S8SW5S5S10S6S9SW9S9S8S9
1 day agoS8S6S5--S4S4S4S4SW6SW5S4S4SW4S10S11SW11
G15
S9S6
G15
S8S9
G14
S10
G16
S10S8S8
2 days agoS9SE4SE4S4S3S6S6S4S3SW7S6S5S9
G14
S12
G18
S11
G16
SW13S12
G17
S10
G16
S11
G18
S10S10S12S11S12

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
Sat -- 02:03 AM CDT     Moonset
Sat -- 06:41 AM CDT     Sunrise
Sat -- 09:28 AM CDT     0.44 feet High Tide
Sat -- 03:25 PM CDT     Moonrise
Sat -- 08:22 PM CDT     Sunset
Sat -- 08:26 PM CDT     -0.26 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
00.10.20.20.30.30.40.40.40.40.40.40.40.30.20.10-0.1-0.2-0.2-0.3-0.3-0.2-0.2

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda Bay, Texas
   EDIT      (on/off)   Help   One Week of Data
Port Lavaca
Click for Map
Sat -- 02:04 AM CDT     Moonset
Sat -- 06:41 AM CDT     Sunrise
Sat -- 07:44 AM CDT     0.60 feet High Tide
Sat -- 10:07 AM CDT     0.59 feet Low Tide
Sat -- 01:50 PM CDT     0.64 feet High Tide
Sat -- 03:26 PM CDT     Moonrise
Sat -- 08:23 PM CDT     Sunset
Sat -- 11:15 PM CDT     -0.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.20.30.40.50.50.60.60.60.60.60.60.60.60.60.60.60.50.40.30.20.10-0

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES 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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (21,6,7,8)
      (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.