Tuesday, October17, 2017 L-36.com

Marine Weather and Tides
Aransas Pass, 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 7:30AMSunset 6:58PM Tuesday October 17, 2017 7:18 PM CDT (00:18 UTC) Moonrise 4:25AMMoonset 5:01PM Illumination 6% Phase: Waning Crescent; Moon at 27 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- 337 Pm Cdt Tue Oct 17 2017
Tonight..Northeast wind 5 to 10 knots. Bays smooth to slightly choppy.
Wednesday..Northeast wind 5 to 10 knots shifting east in the afternoon. Bays smooth.
Wednesday night..East wind 5 to 10 knots. Bays smooth. Isolated showers after midnight.
Thursday..East wind 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bays slightly choppy to occasionally choppy. A chance of showers and Thunderstorms.
Thursday night..East 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 10 to 15 knots. Bays slightly choppy to occasionally choppy. A chance of showers and Thunderstorms.
Saturday..Southeast wind 10 to 15 knots. Bays slightly choppy to occasionally choppy. A chance of showers and Thunderstorms.
Saturday night..South wind 10 to 15 knots. Bays slightly choppy to occasionally choppy. A chance of showers and Thunderstorms.
Sunday..Southwest wind 5 to 10 knots shifting north in the afternoon. Bays smooth to slightly choppy. A chance of showers and Thunderstorms.
Sunday night..North wind 10 to 15 knots. Bays slightly choppy to occasionally choppy. A slight chance of showers and Thunderstorms.
GMZ200 337 Pm Cdt Tue Oct 17 2017
Synopsis for the middle texas coastal waters.. Weak northeasterly winds tonight will veer towards the southeast by Wednesday afternoon. The onshore flow strengthens a bit, becoming weak to moderate, which will persist through the remainder of the week. Isolated to scattered showers and Thunderstorms will be possible late Wednesday night through the end of the week. Another cold front is expected to be approaching by late in the weekend.

7 Day Forecast for Marine Location Near Aransas Pass, TX
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location: 27.94, -97.07     debug

Area Discussion for - Corpus Christi, TX
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Fxus64 kcrp 172329
area forecast discussion
national weather service corpus christi tx
629 pm cdt Tue oct 17 2017

Note aviation discussion below corresponding to the 00z tafs.

Vfr conditions expected during the TAF period. Generally light
wind overnight early Wednesday. Weak to moderate onshore flow
Wednesday afternoon.

Previous discussion issued 344 pm cdt Tue oct 17 2017
short term (tonight through Wednesday night)...

it really does not get much better than this, today. We keep the
light north-northeasterly winds in place tonight, though they will
be even weaker than their current state. We once again will have
really good radiational cooling conditions overnight with clear
skies and dry air in place. Could easily rival this mornings' lows
in a lot of places, possibly even a skosh lower.

Heading into Wednesday, temperatures will be slightly warmer as we
develop a light onshore flow with just a slight uptick in our
dewpoints. Overall the day will be another fine day to be out and
about with temperatures in the low mid-80s.

Continued moisture modification during the overnight hours expected,
although the surface layer flow is light and variable. Expecting an
increase in cloud cover towards the mid-morning hours which looks to
provide enough of a window for radiation ground fog to develop
across the interior portions of the region. There should be enough
dry air in place above the surface to allow for a sharp inversion to
develop helping to increase the fog potential. At this time not
entirely sure how thick the fog will become given the brief window
of moistening we'll have experienced. Otherwise we tack on several
degrees on our overnight lows.

With the positive moisture flux, especially across the gulf waters,
we could see a few showers develop early Thursday morning and
drift westward towards the coast.

Tides coastal flooding...

we currently are still seeing positive tidal anomalies between 1-
1.5', even with the northerly flow we have been experiencing the
past couple of days. Highs tides along the gulf facing beaches have
come close to reaching the 2' msl threshold the past few cycles.

Still looks like starting as early as Wednesday afternoon evening we
could reach the 2+' msl threshold prompting a coastal flood advisory
for the middle texas coastline.

Long term (Thursday through Tuesday)...

by the onset of the longterm period, changes will be apparent,
especially in the coastal bend and coastal plains. Much more humid
conditions and some patchy fog are expected for early Thursday
morning. The moisture by Thursday will be confined mainly to the
lowest layers, but deeper moisture will gradually increase through
the end of the week. An approaching upper level trough will spin
several shortwaves through the area Thursday through Saturday, each
helping to produce scattered showers and thunderstorms. Warmer
temperatures will also prevail for Thursday through at least
Saturday. The main upper level trough will really dig into the area
Saturday night and Sunday, eventually pushing a cold front through
the region. Model consistency still not great in regards to frontal
timing, but a Sunday early Monday ballpark is what we're looking for
right now. Expect a relatively clean front with clouds and moisture
pushing out quickly behind it. Will see a nice cool down once again
into early next week. Not going quite as cool as this past front
yet, but would not be surprised if we continue to trend in that

Long moderate to strong easterly fetch across the gulf will once
again lead to several days of minor coastal flooding through
Saturday. Estofs p-etss guidance has been consistent in showing
these higher water levels over the past few days.

Preliminary point temps pops
Corpus christi 56 83 69 84 70 0 10 10 30 30
victoria 50 84 64 85 68 0 0 10 30 30
laredo 54 85 60 86 68 0 0 0 10 10
alice 53 86 68 87 69 0 0 10 20 20
rockport 63 82 72 84 74 0 10 10 30 30
cotulla 50 84 59 85 67 0 0 0 10 20
kingsville 53 87 67 87 70 0 0 10 30 20
navy corpus 69 84 74 85 75 0 10 20 30 30

Crp watches warnings advisories
Tx... None.

Gm... None.

Wc 87... Aviation

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANPT2 7 mi49 min NE 6 G 8 74°F 78°F1019.1 hPa
RTAT2 - 8775237 - Port Aransas, TX 7 mi49 min ENE 6 G 8 74°F 78°F1020.2 hPa
TAQT2 - 8775296 - Texas State Aquarium, TX 19 mi49 min 77°F 79°F1019.2 hPa
NUET2 23 mi49 min SE 7 G 8 74°F1020.1 hPa
PACT2 - 8775792 - Packery Channel, TX 23 mi49 min E 6 G 7 74°F 74°F1020.2 hPa
AWRT2 25 mi49 min E 4.1 G 5.1 76°F 73°F1020 hPa
MQTT2 - 8775870 - Malaquite Beach (Corpus Christi), TX 26 mi49 min E 5.1 G 7 74°F 78°F1019.7 hPa
IRDT2 34 mi49 min ENE 7 G 8 75°F 74°F1020.6 hPa
SDRT2 - 8773037 - Seadrift, TX 37 mi49 min SSE 4.1 G 5.1 74°F 73°F1020.2 hPa
BABT2 - 8776604 - Baffin Bay; Point of Rocks, TX 48 mi49 min ENE 11 G 12 74°F 75°F1020.1 hPa
KMZG 49 mi44 min 5.1 G 12 75°F 57°F

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, TX10 mi26 minN 010.00 miFair69°F55°F61%1020.3 hPa
Corpus Christi, Corpus Christi Naval Air Station/Truax Field, TX21 mi83 minE 710.00 miFair77°F55°F48%1019.8 hPa

Wind History from TFP (wind in knots)
Last 24hr------------------------------------------------
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Rockport, Aransas Bay, Texas
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Tue -- 04:53 AM CDT     0.62 feet High Tide
Tue -- 05:25 AM CDT     Moonrise
Tue -- 07:30 AM CDT     Sunrise
Tue -- 09:51 AM CDT     0.59 feet Low Tide
Tue -- 03:39 PM CDT     0.63 feet High Tide
Tue -- 06:01 PM CDT     Moonset
Tue -- 06:56 PM CDT     Sunset
Tue -- 09:56 PM CDT     0.58 feet Low Tide
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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Aransas Pass
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Tue -- 02:33 AM CDT     0.74 knots Max Flood
Tue -- 05:25 AM CDT     Moonrise
Tue -- 06:44 AM CDT     -0.00 knots Slack
Tue -- 07:29 AM CDT     Sunrise
Tue -- 09:23 AM CDT     -0.30 knots Max Ebb
Tue -- 11:56 AM CDT     0.00 knots Slack
Tue -- 02:39 PM CDT     0.49 knots Max Flood
Tue -- 05:43 PM CDT     -0.00 knots Slack
Tue -- 06:01 PM CDT     Moonset
Tue -- 06:56 PM CDT     Sunset
Tue -- 09:14 PM CDT     -0.40 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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

GOES Local Image of SouthCentralPlains    EDIT

Wind Forecast for Corpus Christi, TX (20,4,5,8)
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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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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.