Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Rockport, TX

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:21AMSunset 7:46PM Tuesday March 28, 2017 10:57 AM CDT (15:57 UTC) Moonrise 6:55AMMoonset 7:36PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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- 950 Am Cdt Tue Mar 28 2017
.small craft advisory in effect through Wednesday morning...
Rest of today..Southeast wind 10 to 15 knots increasing to around 20 knots in the afternoon. Bays choppy to occasionally rough.
Tonight..Southeast wind around 20 knots decreasing to 15 to 20 knots. Bays choppy to occasionally rough. A slight chance of showers and Thunderstorms.
Wednesday..South wind 10 to 15 knots. Bays slightly choppy to occasionally choppy. A chance of showers and Thunderstorms.
Wednesday night..South wind 10 to 15 knots shifting southwest after midnight. Bays slightly choppy to occasionally choppy. A slight chance of showers and Thunderstorms.
Thursday..Northwest wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
Thursday night..West wind 5 to 10 knots shifting southeast after midnight. Bays smooth.
Friday..South wind 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bays slightly choppy to occasionally choppy.
Friday night..Southeast wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
Saturday..Southeast wind 15 to 20 knots. Bays choppy.
Saturday night..Southeast wind 10 to 15 knots. Bays slightly choppy to occasionally choppy. A chance of showers and Thunderstorms.
GMZ200 950 Am Cdt Tue Mar 28 2017
Synopsis for the middle texas coastal waters.. Onshore flow will increase to strong levels today and continue tonight through early Wednesday as a strong upper level disturbance moves across the southwestern united states. The upper system will increase the chance for showers and Thunderstorms tonight and Wednesday. The front is expected to move through the waters before daybreak Thursday with a moderate offshore flow developing in its wake. Moderate onshore winds return on Friday as the next storm system moves into the southern rockies. The onshore flow will become moderate to strong on Saturday and Sunday as low pressure develops over deep south texas. Scattered to numerous showers and Thunderstorms will be possible Sunday.

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


Area Discussion for - Corpus Christi, TX
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Fxus64 kcrp 281450
afdcrp
area forecast discussion
national weather service corpus christi tx
950 am cdt Tue mar 28 2017

Discussion
See marine discussion below for the latest updates.

Marine
Although, mixing of a LLJ of 35-40 knots will be hampered
somewhat as lapse rates will be lower over the waters than land,
feel sufficient mixing will lead to at least speeds of around 20
knots along with frequent gusts to around 25 knots. Therefore,
have expanded the small craft advisory to include the bays.

Previous discussion /issued 626 am cdt Tue mar 28 2017/
discussion...

note aviation discussion corresponding to the 12z tafs
aviation...

lifr/ifr/MVFR ceilings and MVFR visibilities early this morning will
transition toVFR by late morning/early afternoon. Light onshore
early this morning will increase to breezy/windy by afternoon.

There is a slight chance for showers/thunderstorms near the end
of the TAF period especially over the northern portions of south
texas. Some storms may become strong, mainly over the victoria
crossroads 09-12z Wednesday.

Previous discussion... /issued 504 am cdt Tue mar 28 2017/
short term (today through Wednesday)...

deterministic nwp models predict a strong upper disturbance to
approach texas today then move slowly across texas/srn plains
tonight through Wednesday. Moisture expected to increase over the
cwa in advance of the upper system, yet pwat values not expected
to reach/exceed normal until after 06z wednesdsay (nam
deterministic.) 06-12z Wednesday... NAM deterministic predict
significant CIN with high CAPE and strong 0-6km shear with BRN in
the multi-cellular/supercelluar range. Surface boundary to remain
nw of the cwa. Thus, only elevated convection anticipated yet any
such convection may become strong. 12-18z Wednesday... Continued
upper forcing from the upper system. CIN values decrease and
cape/shear remains high, yet significant drying expected in
response to frontal/dryline passage. Convection may develop along
this boundary and become strong. SPC has a slight risk for the
nern CWA after 12z Wednesday. After 18z Wednesday... Significant
drying expected which will limit convective development.

Coastal/marine... Areas of sea fog early this morning over the bays
and nearshore coastal waters (surface dew points near the sst
values.) expect SCA conditions to develop over the coastal waters
today and continue tonight/early Wednesday morning. The sea state
based on wavewatch/nwps output and expected sfc wind velocities
suggest moderate rip current risk today and a high risk Wednesday.

Long term (Wednesday night through Monday night)...

surface cold front will push through the forecast area late
Wednesday night. Convergence along the boundary combined with
dynamical support from lingering upper trough will result in
scattered showers. Models still show plenty of CAPE across the
coastal bend ahead of the boundary, which if realized could result
in a stormy night. However the cap appears to strong to break, thus
limiting pcpn to primarly showers. Much drier air surges into the
area on Thursday/Friday with min rh values of 25-35%. However, winds
will not be strong enough to reach critical fire thresholds. The
drier airmass will lead to a few pleasant nights with min temps in
the upper 50s/lower 60s by Fri am. Onshore flow returns on Friday
as the next storm system moves into the southern rockies. Expect a
few streamer showers Saturday before stronger dynamics move in
Sunday when the best chance of rain/storms will occur.

Preliminary point temps/pops
Corpus christi 84 72 88 65 82 / 10 10 40 20 10
victoria 84 71 85 62 79 / 10 40 70 20 10
laredo 95 69 93 63 86 / 10 30 10 10 10
alice 89 71 91 63 84 / 10 20 30 20 10
rockport 81 72 81 67 79 / 10 20 40 20 10
cotulla 92 65 91 60 84 / 10 50 10 10 0
kingsville 88 72 92 64 85 / 10 10 30 20 10
navy corpus 80 73 82 68 79 / 10 10 40 20 10

Crp watches/warnings/advisories
Tx... None.

Gm... Small craft advisory until 10 am cdt Wednesday for the following
zones: bays and waterways from baffin bay to port aransas...

bays and waterways from port aransas to port o'connor...

coastal waters from baffin bay to port aransas out 20 nm...

coastal waters from port aransas to matagorda ship channel
out 20 nm... Waters from baffin bay to port aransas from 20
to 60 nm... Waters from port aransas to matagorda ship
channel from 20 to 60 nm.

Te/81... Short term


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCPT2 - 8774770 - Rockport, TX 3 mi40 min SSE 14 G 19 75°F 78°F1009.7 hPa
CPNT2 9 mi40 min SE 14 G 16 75°F 76°F
RTAT2 - 8775237 - Port Aransas, TX 10 mi40 min ESE 14 G 19 74°F 71°F1009.9 hPa
MAXT2 - Mission-Aransas Reserve, TX 10 mi58 min 11 75°F 1010 hPa (+1.0)72°F
PTAT2 - Port Aransas, TX 11 mi58 min ESE 14 G 15 72°F 73°F1009.7 hPa (+1.4)70°F
MIST2 11 mi103 min SE 15 74°F 1010 hPa72°F
TAQT2 - 8775296 - Texas State Aquarium, TX 21 mi40 min 75°F 76°F1008.7 hPa
AWRT2 22 mi40 min SE 13 G 17 75°F 76°F1010.5 hPa
NUET2 25 mi46 min SSE 16 G 19 76°F1009.4 hPa
PACT2 - 8775792 - Packery Channel, TX 26 mi40 min SE 17 G 19 75°F 75°F1009.6 hPa
MQTT2 - 8775870 - Malaquite Beach (Corpus Christi), TX 29 mi40 min ESE 18 G 21 73°F 74°F1009.7 hPa
SDRT2 - 8773037 - Seadrift, TX 35 mi40 min ESE 14 G 18 76°F 77°F1010.7 hPa
IRDT2 38 mi40 min SE 20 G 25 74°F 77°F1009.7 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 48 mi40 min SE 15 G 19 74°F 1010.7 hPa
MBET2 49 mi40 min SSE 14 G 16 74°F

Wind History for Rockport, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rockport Aransas County Airport, TX7 mi65 minSE 17 G 218.00 miOvercast77°F71°F82%1010.2 hPa
Mc Campbell, TX9 mi63 minSE 12 G 247.00 miOvercast77°F72°F87%1009.5 hPa
Port Aransas, Mustang Beach Airport, TX12 mi63 minSE 107.00 miPartly Cloudy74°F71°F92%1010.2 hPa
Corpus Christi, Corpus Christi Naval Air Station/Truax Field, TX24 mi2 hrsSSE 147.00 miPartly Cloudy75°F73°F94%1009 hPa

Wind History from NGP (wind in knots)
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Last 24hrSE11SE10SE12SE13SE17SE15SE13SE15SE15SE13SE12SE12SE14SE14S14SE13SE15----SE15
G22
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1 day agoSE18
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2 days agoW9NW7N9N64NE6SE9SE11--SE11SE12S11SE13SE13SE13
G18
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G22
SE14SE13SE15S12S10S13SE14

Tide / Current Tables for Rockport, Aransas Bay, Texas
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Rockport
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Tue -- 07:15 AM CDT     0.21 feet High Tide
Tue -- 07:22 AM CDT     Sunrise
Tue -- 07:54 AM CDT     Moonrise
Tue -- 01:36 PM CDT     0.16 feet Low Tide
Tue -- 06:01 PM CDT     0.18 feet High Tide
Tue -- 07:44 PM CDT     Sunset
Tue -- 08:35 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.10.10.1

Tide / Current Tables for Aransas Pass, Texas Current
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Aransas Pass
Click for Map
Tue -- 12:24 AM CDT     0.00 knots Slack
Tue -- 04:12 AM CDT     0.71 knots Max Flood
Tue -- 07:22 AM CDT     Sunrise
Tue -- 07:29 AM CDT     -0.00 knots Slack
Tue -- 07:55 AM CDT     Moonrise
Tue -- 11:37 AM CDT     -0.43 knots Max Ebb
Tue -- 02:41 PM CDT     0.00 knots Slack
Tue -- 04:36 PM CDT     0.28 knots Max Flood
Tue -- 06:30 PM CDT     -0.00 knots Slack
Tue -- 07:43 PM CDT     Sunset
Tue -- 08:35 PM CDT     Moonset
Tue -- 09:47 PM CDT     -0.46 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-00.10.30.60.70.60.40.1-0.1-0.3-0.4-0.4-0.4-0.3-0.20.10.20.30.1-0.1-0.3-0.4-0.5-0.4

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 (11,2,3,4)
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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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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.