Sunday, July23, 2017 L-36.com


Marine Weather and Tides
Point Comfort, 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 6:43AMSunset 8:25PM Sunday July 23, 2017 3:46 AM CDT (08:46 UTC) Moonrise 5:57AMMoonset 7:45PM Illumination 0% Phase: New Moon; Moon at 29 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-galveston Bay- 1002 Pm Cdt Sat Jul 22 2017
Rest of tonight..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and isolated Thunderstorms.
Sunday..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms in the evening.
Monday..South winds 10 to 15 knots. Bay waters slightly choppy.
Monday night..South winds 10 to 15 knots. Bay waters slightly choppy.
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 slight chance of showers and Thunderstorms.
Tuesday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms.
Wednesday night..South winds 5 to 10 knots. Bay waters smooth.
Thursday..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 and Thunderstorms.
Thursday night..South winds 10 to 15 knots. Bay waters slightly choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1002 Pm Cdt Sat Jul 22 2017
Synopsis for high island to matagorda ship channel out 60 nm.. An upper level low will bring unsettled weather to the coastal waters again on Sunday. An increasing onshore flow can be expected tonight and persist on Sunday in response to a tightening pressure gradient. Winds should weaken by Tuesday as an area of high pressure develops over the central gulf by the middle of next week.

7 Day Forecast for Marine Location Near Point Comfort, TX
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location: 28.65, -96.6     debug


Area Discussion for - Corpus Christi, TX
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Fxus64 kcrp 230614
afdcrp
area forecast discussion
national weather service corpus christi tx
114 am cdt Sun jul 23 2017

Discussion
Note aviation discussion below corresponding to the 06z tafs.

Aviation
PredominateVFR conditions expected during the TAF period. Non-
convective llws expected 09-14z Sunday generally east of u.S. 281.

Isolated showers thunderstorms anticipated mainly north of u.S.

181 mainly during the mid morning to early afternoon period today.

Light wind near the surface early this Sunday morning becoming
moderate onshore by afternoon. Expect light wind again near the
end of the TAF period.

Previous discussion issued 924 pm cdt Sat jul 22 2017
discussion...

did a quick update mainly for winds and dew points to fit
observations better. Winds near the coast are near 20 mph and even
higher offshore, which is not unusual for south texas this time of
year when there is a good contrast between temperatures near the
coast and west. Did not mess with low temperatures as they seem to
be in the ballpark. Otherwise not much to change on the forecast,
but did remove pops this evening for the victoria area (could have
something in that area late). Updates for zfp, pfm, pfw and afm
done. No changes to latter periods.

Marine...

winds at ptat2 and mqtt2 going 20 to 25 knots which will likely
continue into the overnight hours. As a result issued a small
craft advisory for the nearshore waters (mainly southern but just
north of ptat2 winds probably up near 20 knots) and for the
southern bays. Wrf-arw seems to have the best handle on these
winds so used them but did blend the forecast with these data
toward morning.

Previous discussion... Issued 625 pm cdt Sat jul 22 2017
discussion...

updated zfpcrp to remove heat advisory headline. Nas kingsville
still at 110f but that will fall to below criterion shortly. No
changes to grids yet.

See aviation discussion for 00z tafs.

Aviation...

pretty typical summertime terminal forecasts going out, with the
only issue being whether there will be some showers near the kvct
terminal early Sunday morning. GFS time-heights are showing some
deep vertical velocities but rather high up from 11z to about 16z,
which could mainly mean virga. Decided to go with vcsh there about
12z but ending about 16z. Otherwise, sct-bkn cirrus through the
period. Winds diminish this evening, pick up about 2-4 hours after
sunrise then back with the sea-breeze in the afternoon. No fog
forecast nor MVFR or lower CIGS expected anywhere.

Previous discussion... Issued 347 pm cdt Sat jul 22 2017
short term (tonight through Sunday night)...

convection has struggled thus far to develop today across south
texas. A few showers and storms are occurring just northeast of
the area though. For the rest of the afternoon, some isolated
convection will remain possible especially across the northeast
zones. In addition, dangerous heat index values will persist
through the early evening, and the heat advisory will continue
until 6pm for the southern coastal bend and jim wells county.

A weak disturbance will approach from the east tonight into
Sunday. This could result in isolated showers and storms over gulf
waters and northern coastal bend into the victoria crossroads. The
heat and humidity will be an issue again on Sunday. Highs will
range from 100 to 105 over the brush country and rio grande to
mid upper 90s over the victoria crossroads. Widespread heat index
values of 105 to 109 will common across south texas, with advisory
levels conditions possible over the southern coastal bend and
southern sections of the brush country.

Warm and muggy nights will continue tonight and again on Sunday
night. Overnight lows will be the 70s inland to lower 80s along
the immediate coast under partly cloudy skies.

Long term (Monday through Saturday)...

upper level low pulls across the area on Monday, but lack of
moisture should limit any rain chances. By Tuesday moisture begins
to increase across the area with the return of a more southeasterly
flow. Will maintain mainly slight chance pops for Monday and Tuesday
with upper level energy off to the west by this time and high
pressure building aloft. By later in the week moisture decreases a
bit as surface high pressure builds westward and winds become more
southerly once again. Temperatures change very little through the
period with seasonal highs in the 90s to just above 100. Low
temperatures remain in the 70s area wide. High humidity levels will
keep heat index values in at least the 105 to 109 range through the
week with around 110 possible at times. Expect mainly moderate
daytime winds through the period with winds at night subsiding.

Preliminary point temps pops
Corpus christi 95 78 96 78 94 10 10 10 10 20
victoria 97 77 97 77 96 20 10 10 10 20
laredo 103 78 102 79 101 10 10 10 0 10
alice 101 76 99 76 99 10 10 10 10 20
rockport 94 82 94 82 93 10 10 10 10 20
cotulla 102 77 102 77 100 10 10 10 10 10
kingsville 99 77 97 78 97 10 10 10 10 20
navy corpus 94 83 93 84 94 10 10 10 10 20

Crp watches warnings advisories
Tx... None.

Gm... Small craft advisory for winds until 4 am cdt early this morning
for the following zones: bays and waterways from baffin bay
to port aransas... Coastal waters from baffin bay to port
aransas out 20 nm... Coastal waters from port aransas to
matagorda ship channel out 20 nm.

Wc 87... Aviation


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 1 mi46 min S 14 G 18 84°F 86°F1012.6 hPa (-1.1)
SDRT2 - 8773037 - Seadrift, TX 18 mi46 min SSE 16 G 20 85°F 86°F1012.6 hPa (-1.0)
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 18 mi46 min S 18 G 20 84°F 1012.5 hPa (-1.0)
MBET2 21 mi46 min SSW 17 G 21 85°F 87°F1011.7 hPa (-0.9)
AWRT2 31 mi46 min S 12 G 16 85°F 86°F1013 hPa (-0.6)
EMAT2 37 mi46 min S 13 G 17 85°F 87°F1012.5 hPa (-1.4)
MAXT2 - Mission-Aransas Reserve, TX 43 mi46 min S 15 1013 hPa (-1.0)
CPNT2 43 mi46 min S 15 G 18 84°F 86°F
RCPT2 - 8774770 - Rockport, TX 49 mi46 min S 21 G 25 85°F 88°F1012.4 hPa (-0.6)

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
Port Lavaca - Calhoun County Airport, TX4 mi71 minS 610.00 miFair81°F75°F81%1013.5 hPa
Palacios Municipal Airport, TX19 mi53 minS 11 G 1710.00 miFair83°F75°F79%1013.1 hPa
Victoria, Victoria Regional Airport, TX22 mi55 minSSE 610.00 miFair81°F75°F82%1012.9 hPa

Wind History from PKV (wind in knots)
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Last 24hrSE3S3S3S3SW4SW8SW7S6S8SW8S11
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S10S10S8S6S6S5S6SE5S8S6
1 day agoCalmCalmCalmNE3CalmS3S3CalmSE3
G12
SE10S6SE9SE11SE12S11S10S7SE5S4SE3SE4S4S4SE3
2 days agoCalmCalmCalmCalmCalmSW3W6SW4S3CalmSE10SE10S7
G15
SE11SE11S8S8S5S6S4S4S4S4Calm

Tide / Current Tables for Port Lavaca, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Sun -- 02:51 AM CDT     -0.68 feet Low Tide
Sun -- 04:47 AM CDT     New Moon
Sun -- 06:42 AM CDT     Sunrise
Sun -- 06:56 AM CDT     Moonrise
Sun -- 02:05 PM CDT     0.77 feet High Tide
Sun -- 08:22 PM CDT     Sunset
Sun -- 08:44 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-0.6-0.7-0.7-0.6-0.5-0.3-0.10.10.30.50.60.70.80.80.80.70.70.70.60.50.40.20

Tide / Current Tables for Port O'Connor, Matagorda Bay, Texas
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Port O'Connor
Click for Map
Sun -- 04:47 AM CDT     New Moon
Sun -- 06:42 AM CDT     Sunrise
Sun -- 06:56 AM CDT     Moonrise
Sun -- 11:55 AM CDT     0.62 feet High Tide
Sun -- 08:21 PM CDT     Sunset
Sun -- 08:43 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.5-0.4-0.4-0.2-0.10.10.20.30.50.50.60.60.60.60.60.60.50.40.30.20-0.1-0.2-0.4

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Corpus Christi, TX (4,6,7,8)
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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.