Thursday, September20, 2018

Marine Weather and Tides
Rockport, TX

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9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 7:16AMSunset 7:28PM Thursday September 20, 2018 3:20 AM CDT (08:20 UTC) Moonrise 4:04PMMoonset 2:14AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 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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GMZ235 Bays And Waterways From Port Aransas To Port O'connor- 1034 Pm Cdt Wed Sep 19 2018
Rest of tonight..Southeast wind around 10 knots. Bays slightly choppy. A slight chance of showers and Thunderstorms after midnight.
Thursday..Southeast wind around 10 knots. Bays slightly choppy. A chance of showers and Thunderstorms.
Thursday night..Southeast wind 10 to 15 knots. Bays slightly choppy to occasionally choppy. A chance of showers and Thunderstorms.
Friday..Southeast wind around 10 knots. Bays slightly choppy. A chance of showers and Thunderstorms.
Friday night..Southeast wind around 10 knots. Bays slightly choppy. A chance of showers and Thunderstorms.
Saturday..Southeast wind 5 to 10 knots. Bays smooth. Showers and Thunderstorms likely.
Saturday night..Southeast wind around 10 knots. Bays slightly choppy. A chance of showers and Thunderstorms.
Sunday..Southeast wind 5 to 10 knots. Bays smooth. A chance of showers and Thunderstorms.
Sunday night..Southeast wind 5 to 10 knots. Bays smooth. A chance of showers and Thunderstorms.
Monday..Southeast wind 5 to 10 knots. Bays smooth. A chance of showers and Thunderstorms.
Monday night..Southeast wind 5 to 10 knots. Bays smooth. A slight chance of showers and Thunderstorms.
GMZ200 1034 Pm Cdt Wed Sep 19 2018
Synopsis for the middle texas coastal waters.. A weak to moderate onshore flow is expected tonight through Thursday night. Isolated to scattered showers and Thunderstorms will be possible later tonight through Thursday night. The weak to moderate onshore flow is expected to develop tonight and continue through the end of the week. Scattered to numerous showers and Thunderstorms will develop Friday and Saturday, with additional scattered showers and storms possible early next week.

7 Day Forecast for Marine Location Near Rockport, TX
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location: 27.99, -97.07     debug

Area Discussion for - Corpus Christi, TX
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Fxus64 kcrp 200551
area forecast discussion
national weather service corpus christi tx
1251 am cdt Thu sep 20 2018

See .Aviation discussion for 06z tafs.

Isolated showers and thunderstorms already on radar and stratiform
rain over the rio grande moving ene. Could have some of the
stratiform get into klrd early, but expect it not to impact
eastern terminals at this time. Since there could be some
convection impacting kcrp terminal before sunrise, did include
vcsh (thunder still isolated and short-lived) but will monitor and
add shra tsra if needed based on radar trends. Otherwise, will
have either tempo tsra and or prob30 tsra in the terminals today
after sunrise as upper support and plentiful moisture will work
with daytime heating and weak sea-breeze. Will have convection end
from east to west this evening. Generally southeast winds today
not too strong. Concerning fog, clean IR satellite is showing a
lot of mid and high clouds and given that boundary layer winds are
more elevated tonight, will not hit the fog very hard at all
(more like a wait for it to develop method as think fog will be
hard to come by because of clouds). That is all.

Previous discussion issued 707 pm cdt Wed sep 19 2018

a quick grid update for the evening hours as multiple showers and
storms have developed across parts of the brush country and rio
grande plains. Some of the storms have been had frequent lightning
and very heavy rainfall but we have not seen or heard of any
impacts. Msas shows a large area of stronger moisture flux
convergence with good theta-e ridging. This boundary convergence
will slowly wane through the evening hours as it moves towards the
west-northwest, so we cater the pops this evening to account for
the additional isolated scattered activity.

00z aviation cycle is below.


tonight...VFR MVFR. Expecting to see some inland fog develop
tonight across the coastal plains, though less confident at kali
as the surface winds may be too strong and keeps the mixing going.

Ifr vsbys are possible tomorrow morning at kvct. Pockets of
stratus are also possible across much of the region developing
late tonight and moving inland during the morning hours. Medium

Thursday... MostlyVFR. Gulf moisture starts to ramp up back into
the region and we expect the sea breeze and other upper level
disturbances to touch off widely scattered showers and
thunderstorms. We continue with the prob30s for the time being as
the time of any impacts to our terminals is still a bit
questionable. Medium confidence.

Previous discussion... Issued 332 pm cdt Wed sep 19 2018
short term (tonight through Thursday night)...

goes total precipitable water image continues to show the deeper
moisture axis from off the lower texas coast northwest into the
southern portions of the coastal bend and brush country. Water
vapor imagery indicates a weak upper low near san antonio with
weakly divergent flow aloft to the south of the upper low over
south texas. Isolated convection between alice and falfurrias
will move northwest into the brush country this evening.

Water vapor imagery also depicts a short wave trough from the
texas big bend into coahuila this afternoon. This feature will
move northeast tonight and be over the brush country by 12z
Thursday. Will keep a slight chance of convection over the brush
country overnight. There will also be a slight chance of showers
developing along the coast as higher moisture steadily moves
into the region from the gulf. Will show the best chances for rain
across the brush country to the victoria crossroads Thursday into
Thursday night as the weak short wave trough moves to the
northeast on Thursday and another impulse moves into the region
from coahuila Thursday night.

Long term (Friday through Wednesday)...

more rainy, unsettled weather is in store for south texas through
the weekend and into early next week. The upper level ridge will be
east of the region on Friday, with a shortwave trough sweeping into
the central and southern plains. Both the GFS and ECMWF indicate
deep moisture will again spread across the region, with precipitable
water values near 2.2 to 2.4 inches Friday and over the weekend.

This trough axis will very slowly move over the state, with a front
stalled across texas, north of the region. Scattered to numerous
showers and storms are expected to develop on Friday and Saturday.

Additional moderate rainfall amounts may develop with training
storms, but have held off mention for the time. The shortwave axis
shifts further east early next week, with the frontal boundary
ebbing slightly closer to the region before washing out. Chances
for showers and storms will continue on Sunday, with decreasing
coverage on Monday. However, the high moisture axis does remain over
the region, and as a longwave trough begins sliding into the central
conus during the middle of next week additional isolated to
scattered showers and storms will be possible.

Preliminary point temps pops
Corpus christi 78 87 77 86 76 20 50 50 50 40
victoria 76 88 75 86 74 30 60 50 60 40
laredo 77 91 76 89 75 30 40 50 60 50
alice 77 89 76 88 74 30 40 50 50 50
rockport 80 88 78 88 77 20 50 50 60 40
cotulla 75 88 75 87 73 50 50 60 60 50
kingsville 77 89 77 88 76 30 40 40 50 50
navy corpus 81 88 79 88 78 20 50 50 60 40

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 10 mi39 min 83°F 85°F1013.1 hPa
ANPT2 11 mi33 min 83°F 84°F1012.1 hPa
PTAT2 - Port Aransas, TX 11 mi21 min SE 15 G 17 83°F 85°F1012.8 hPa (-0.6)78°F
TAQT2 - 8775296 - Texas State Aquarium, TX 21 mi33 min 84°F 86°F1011.9 hPa
AWRT2 22 mi39 min 84°F 87°F1013.1 hPa
NUET2 25 mi39 min 85°F1013 hPa
PACT2 - 8775792 - Packery Channel, TX 26 mi39 min 84°F 85°F1013.1 hPa
MQTT2 - 8775870 - Malaquite Beach (Corpus Christi), TX 29 mi33 min 84°F 86°F1012.5 hPa
SDRT2 - 8773037 - Seadrift, TX 35 mi39 min 83°F 87°F1013.3 hPa
IRDT2 38 mi39 min 84°F 86°F1013.5 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 48 mi39 min 83°F 84°F1012.8 hPa
MBET2 49 mi39 min 84°F 90°F1011.9 hPa

Wind History for Rockport, TX
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rockport Aransas County Airport, TX7 mi28 minSE 79.00 miFair83°F77°F82%1013 hPa
Mc Campbell, TX9 mi46 minSSE 7 G 155.00 miHeavy Rain83°F77°F84%1013.2 hPa
Corpus Christi, Corpus Christi Naval Air Station/Truax Field, TX24 mi85 minSSE 910.00 miFair85°F80°F85%1013 hPa

Wind History from RKP (wind in knots)
1 day agoS4CalmS3CalmCalmCalmSE4E4SE6E7SE7SE7SE8SE7SE9SE7S7SE5SE7SE6S4S5S5S4
2 days agoCalmCalmCalmCalmCalmE4E4E4SE6E8E8SE8SE9SE8E10SE7SE8SE7SE8SE5SE6S4S4Calm

Tide / Current Tables for Rockport, Aransas Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Aransas Pass, Texas Current
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Tide / Current data from XTide NOT FOR NAVIGATION
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Weather Map and Satellite Images
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GOES Local Image of    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.
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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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Gulf Stream Current

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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 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 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.