Thursday, June29, 2017 L-36.com


Marine Weather and Tides
Sunset Valley, 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 6:31AMSunset 8:38PM Thursday June 29, 2017 10:48 AM CDT (15:48 UTC) Moonrise 11:25AMMoonset 12:00AM Illumination 30% Phase: Waxing Crescent; Moon at 6 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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7 Day Forecast for Marine Location Near Sunset Valley, TX
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location: 30.21, -97.8     debug


Area Discussion for - Austin/San Antonio, TX
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Fxus64 kewx 291130
afdewx
area forecast discussion
national weather service austin san antonio tx
630 am cdt Thu jun 29 2017

Aviation
Areas of stratus with a range of lifr to MVFR CIGS and patchy br
with ifr-MVFR vsbys will mix to few-sctVFR level clouds by mid
morning, 15z-16z. Stratus redevelops overnight with ifr MVFR cigs
with better chances of MVFR due to stronger lower level flow. Stratus
mixes out again Friday mid morning. S to SE winds increase to 7 to 15
kts late morning into afternoon and prevails this evening and
overnight. Wind gusts to 25 kts are possible this afternoon into
evening. Any shra tsra will be near the coastal plains with no
impacts to the TAF sites.

Prev discussion issued 407 am cdt Thu jun 29 2017

Corrected typo bottom of first paragraph...

short term (today through Friday)...

the subtropical ridge will continue to strengthen over south central
tx with only a few showers and storms forecast over some of the
coastal prairie counties the next couple days. Primary weather
concerns are for heat indices as we see an increase in outdoor
activities going into independence day. A weakness in the mid to
upper level ridge looms to the SE over the coast and further enhances
the subsidence effect of the ridge from a sharpened anticyclonic mid
level wind flow over central tx. Another subtle troughing feature
over the central plains is expected to drop a weak frontal zone swd
tonight and likely develop a thunderstorm complex over the red river
on Friday. This feature of unsettled weather is expected to enhance
southerly winds and raise dew points into the low middle 70s the next
couple mornings over south central tx. Mid 70s dew points are already
noted over parts of the coastal prairies. Blended guidance data
suggests an isolated location or two to reach the low end side of
heat advisory criteria, with increasing winds for Friday have a
better chance of making the product necessary for a significant
portion of the forecast area. Areas along the rio grande look to
be on the cusp of elevated fire weather conditions with rh values
in the upper 20s with the winds picking up for Friday.

Long term (Friday night through Wednesday)...

Saturday's surface pressure gradient is suggested by raw data to
relax slightly, but guidance data continues to run some breezy
conditions into Saturday afternoon. Heat indices Saturday are
expected to ease off a degree or two from those of Friday, but the
increase of outdoor activity as we approach the holidays could result
in more heat stress cases over the area. The high pressure ridge is
forecast to amplify slightly to the west with broad coverage still
over texas. This subtle shift could lower winds and humidities
slightly by independence day, but heat indices are still expected to
reach near triple digits through the extended forecast.

Preliminary point temps pops
Austin camp mabry 95 78 95 77 96 0 0 10 - 10
austin bergstrom intl airport 94 77 95 76 96 0 - 10 - 10
new braunfels muni airport 96 76 96 76 95 0 0 10 - -
burnet muni airport 93 76 94 76 94 0 0 0 0 10
del rio intl airport 101 78 101 79 98 0 0 0 0 -
georgetown muni airport 94 77 95 77 95 0 0 - 0 10
hondo muni airport 98 77 97 77 96 0 0 0 0 -
san marcos muni airport 94 77 95 76 95 0 0 10 - -
la grange - fayette regional 95 79 94 78 96 20 - 20 - 10
san antonio intl airport 95 79 96 79 95 0 0 - 0 -
stinson muni airport 96 78 96 78 96 0 0 - 0 -

Ewx watches warnings advisories
None.

Mesoscale aviation... 04
synoptic grids... Oaks


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Austin-Bergstrom International Airport, TX7 mi56 minS 710.00 miMostly Cloudy81°F75°F82%1011.4 hPa
Austin City, Austin Camp Mabry, TX8 mi58 minVar 310.00 miA Few Clouds84°F73°F70%1011.4 hPa
Austin Executive Airport, TX18 mi54 minN 010.00 mi81°F73°F79%1013.2 hPa
Lago Vista TX, Rusty Allen Airport, TX22 mi74 minSSE 410.00 miPartly Cloudy82°F72°F75%1013.5 hPa
San Marcos, San Marcos Municipal Airport, TX22 mi64 minSSE 73.00 miFog/Mist77°F75°F94%1013.5 hPa

Wind History from AUS (wind in knots)
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Last 24hrSE3NE6E9E5E9
G18
E7E6E5SE6SE7SE7SE6S7SE7S6S6S3CalmCalmS4S3S4S4S7
1 day agoNE6NE743NE8
G14
E9SE21
G28
S14SW5SE5S3CalmS3CalmCalmW4CalmCalmCalmCalmCalm3E6E3
2 days ago3Calm3SE4CalmE5E6E5E7SE10SW6CalmCalmN3CalmSE3CalmN3NE3E3E4CalmCalmE3

Tide / Current Tables for
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Tide / Current Tables for
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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 Austin/San Antonio, TX (11,2,3,4)
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Ground Weather Radar Station Central Texas
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weather_mapweather_map weather_map

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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.