Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Port Aransas, 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 7:01AMSunset 8:03PM Sunday August 20, 2017 6:52 AM CDT (11:52 UTC) Moonrise 4:46AMMoonset 6:23PM Illumination 3% Phase: Waning Crescent; Moon at 28 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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GMZ230 Bays And Waterways From Baffin Bay To Port Aransas- 333 Am Cdt Sun Aug 20 2017
Today..Southeast wind 5 to 10 knots increasing to 10 to 15 knots late. Bays slightly choppy to occasionally choppy.
Tonight..Southeast wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
Monday..Southeast wind 5 to 10 knots becoming east 10 to 15 knots in the afternoon. Bays slightly choppy to occasionally choppy. A slight chance of showers. A slight chance of Thunderstorms in the afternoon.
Monday night..Southeast wind 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bays slightly choppy to occasionally choppy.
Tuesday..Southeast wind around 5 knots increasing to 10 to 15 knots in the afternoon. Bays slightly choppy to occasionally choppy. A slight chance of showers and Thunderstorms.
Tuesday night..Southeast wind 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bays slightly choppy to occasionally choppy.
Wednesday..South wind around 5 knots shifting east in the afternoon. Bays smooth. A slight chance of showers and Thunderstorms.
Wednesday night..Southeast wind around 10 knots becoming 5 to 10 knots after midnight. Bays smooth. A slight chance of showers and Thunderstorms.
Thursday..Southeast wind around 5 knots shifting east in the afternoon. Bays smooth. A chance of showers and Thunderstorms.
Thursday night..Southeast wind 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bays slightly choppy to occasionally choppy. A chance of showers and Thunderstorms.
GMZ200 333 Am Cdt Sun Aug 20 2017
Synopsis for the middle texas coastal waters.. Weak onshore flow in the morning will become east to southeast and increase to more moderate levels today and Monday. Moisture will increase on Monday due to an upper level trough, providing for a slight chance for showers and Thunderstorms on Monday. A weak onshore flow will develop during the mid to late week. Isolated to scattered showers and Thunderstorms will be possible daily through the remainder of the week.

7 Day Forecast for Marine Location Near Port Aransas, TX
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location: 27.84, -97.07     debug


Area Discussion for - Corpus Christi, TX
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Fxus64 kcrp 201038 aaa
afdcrp
area forecast discussion... Updated
national weather service corpus christi tx
538 am cdt Sun aug 20 2017

Discussion
See aviation discussion for 12z tafs.

Aviation
Could have some very brief MVFR conditions at kali and kvct before
14z; otherwise am expectingVFR through the terminal forecast
period with light winds early then south a couple of hours after
sunrise becoming more southeast and gusty with the passage of the
sea-breeze. Moisture too limited for any convection along the
sea-breeze. Winds become light and variable overnight and could
have some MVFR CIGS over kali and kvct after 21 06z. However, am
not expecting this to be widespread or frequent enough to warrant
putting them in the terminal forecast at this time. Next couple of
aviation shifts may decide to add.

Previous discussion issued 402 am cdt Sun aug 20 2017
short term (today through Monday)...

atmospheric moisture appears too limited once again for
showers storms today, although could not rule out a very isolated
weak shower today. Upper ridge will dominate south texas weather
this morning. Upper trough tutt still seen on satellite and shown to
be moving very little. The better convection will be on the eastern
side but satellite is showing some weak convection on the weaker
side. Thus, am going to cut down on pops for Monday just a bit, and
will go with 30 pops NE and 20 pops most other locations. Any
precipitation overnight will remain offshore although a few showers
may reach the eastern portions of the gulfmex. Based on model
guidance, it looks like temperatures may be a degree or to less in
some areas. Another degree or lower on Monday due to more cloud
cover. MAX and min temperatures a blend of previous forecast and
bias-corrected mos. Finally, as has been the case daily for some
time, heat indices 105 to 109 will appear common over most locations
in south texas today through Monday. Finally, another borderline rip
current risk in the low to moderate category, as worksheet gives a
"4" for each day. Given we are near a new moon now, and already have
moderate risk out - will keep it.

Marine (today through Sunday)...

should have no significant issues on the waters, with weak to
moderate southerly flow continuing and seas 2 to maybe 3 feet.

Isolated showers this morning and perhaps a bit more activity
offshore Monday morning with a bit better moisture available
proximate to the upper trough.

Long term (Monday night through Saturday)...

the weakening tutt low will move very little over the western gulf
early in the period. Moisture increasing across the region will
bring isolated showers and storms over the gulf waters Monday night,
increasing to isolated to scattered coverage and moving inland
through the day on Tuesday. An upper level shear axis develops off
the coast where the tutt low was during the mid week. Upper level
ridging will try to build back into the region on Wednesday, but
will continue to carry a slight chance for convection. Late in the
week another surge of tropical moisture may push into the region as
the remnants of what was TS harvey progress westward towards
mexico. This will keep chance pops in the forecast Thursday through
the end of the week.

Closer to seasonable temperatures will persist through the week.

Heat index values of 105 to 109 degrees will be more isolated across
the region as well, but most likely across portions of the southern
coastal bend during the mid week.

Preliminary point temps pops
Corpus christi 97 78 96 77 95 10 10 20 10 20
victoria 99 76 97 76 96 10 10 30 10 20
laredo 104 79 102 78 100 0 10 10 10 10
alice 101 76 99 75 98 10 10 20 10 20
rockport 94 82 93 80 94 10 10 30 10 30
cotulla 102 77 101 76 100 0 10 10 10 10
kingsville 100 77 99 76 98 10 10 20 10 20
navy corpus 94 82 94 81 94 10 10 20 10 30

Crp watches warnings advisories
Tx... None.

Gm... None.

Gw 86... Aviation


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTAT2 - 8775237 - Port Aransas, TX 0 mi52 min S 2.9 G 5.1 82°F 85°F1014.1 hPa (-0.7)
PTAT2 - Port Aransas, TX 1 mi52 min S 7 G 8 82°F 87°F1014 hPa (-0.7)78°F
MIST2 1 mi97 min S 6 83°F 1015 hPa79°F
ANPT2 2 mi52 min SSE 6 G 8 83°F 83°F
RCPT2 - 8774770 - Rockport, TX 13 mi52 min SSW 9.9 G 12 84°F 88°F1013.7 hPa (-0.5)
TAQT2 - 8775296 - Texas State Aquarium, TX 17 mi52 min 82°F 87°F1013.3 hPa (-0.6)
PACT2 - 8775792 - Packery Channel, TX 17 mi52 min S 5.1 G 6 82°F 85°F1014 hPa (-0.8)
CPNT2 19 mi52 min SSW 2.9 G 5.1 82°F 86°F
MAXT2 - Mission-Aransas Reserve, TX 20 mi52 min SSW 5.1 1014 hPa (-1.0)
MQTT2 - 8775870 - Malaquite Beach (Corpus Christi), TX 20 mi52 min S 8 G 8.9 82°F 84°F1013.3 hPa (-0.7)
NUET2 22 mi52 min SW 8 G 11 86°F1014.3 hPa (-0.5)
IRDT2 28 mi52 min S 7 G 8.9 82°F 86°F1014.4 hPa (-0.7)
AWRT2 30 mi52 min S 7 G 8 83°F 87°F1014 hPa (-0.5)
BABT2 - 8776604 - Baffin Bay; Point of Rocks, TX 42 mi52 min 8.9 G 11 82°F 86°F1014.1 hPa (-0.7)
SDRT2 - 8773037 - Seadrift, TX 44 mi52 min S 11 G 13 85°F 87°F1014 hPa (-0.5)
KMZG 47 mi37 min S 9.9 84°F 75°F

Wind History for Port Aransas, TX
(wind in knots)    EDIT      (on/off)   Help
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S4
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S4
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S5
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Aransas, Mustang Beach Airport, TX2 mi77 minS 510.00 miFair81°F77°F89%1013.9 hPa
Mc Campbell, TX9 mi77 minno data10.00 miFair82°F77°F87%1013.9 hPa
Rockport Aransas County Airport, TX17 mi59 minSSW 310.00 mi80°F75°F87%1013.9 hPa
Corpus Christi, Corpus Christi International Airport, TX23 mi61 minS 310.00 miA Few Clouds76°F75°F97%1013.9 hPa

Wind History from RAS (wind in knots)
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Last 24hrS6S5S5S5SE5SE6S7SE8SE10SE10SE10SE11
G15
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SE6SE8SE9SE7SE7SE6S5S6S5S5S3
1 day agoS4S4S6S4S6S6SE8SE9SE8SE13
G17
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SE10SE12S9S9S8
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2 days agoS8S7S10S10S9S9
G16
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SE12SE10SE10SE8SE7S6S6S7SE7SE7S8S5S6

Tide / Current Tables for Port Aransas, Texas
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Port Aransas
Click for Map
Sun -- 04:58 AM CDT     0.96 feet High Tide
Sun -- 05:46 AM CDT     Moonrise
Sun -- 07:01 AM CDT     Sunrise
Sun -- 09:24 AM CDT     0.86 feet Low Tide
Sun -- 01:01 PM CDT     0.98 feet High Tide
Sun -- 07:23 PM CDT     Moonset
Sun -- 08:01 PM CDT     Sunset
Sun -- 09:23 PM CDT     -0.24 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.50.70.90.910.90.90.90.90.90.9110.90.80.60.40.2-0-0.2-0.2-0.2-0.1

Tide / Current Tables for Aransas Pass, Texas Current
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Aransas Pass
Click for Map
Sun -- 12:23 AM CDT     0.00 knots Slack
Sun -- 04:26 AM CDT     1.79 knots Max Flood
Sun -- 05:45 AM CDT     Moonrise
Sun -- 07:01 AM CDT     Sunrise
Sun -- 02:03 PM CDT     -0.00 knots Slack
Sun -- 07:23 PM CDT     Moonset
Sun -- 08:01 PM CDT     Sunset
Sun -- 08:18 PM CDT     -1.82 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.30.41.11.61.81.81.71.51.310.80.50.30.10-0.2-0.6-1-1.4-1.7-1.8-1.8-1.6-1.2

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 (7,2,3,4)
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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.