Thursday, September21, 2017 L-36.com


Marine Weather and Tides
Castle Hills, 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 7:21AMSunset 7:31PM Thursday September 21, 2017 4:13 PM CDT (21:13 UTC) Moonrise 7:39AMMoonset 7:46PM 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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7 Day Forecast for Marine Location Near Castle Hills, TX
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location: 29.51, -98.53     debug


Area Discussion for - Austin/San Antonio, TX
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Fxus64 kewx 211943
afdewx
area forecast discussion
national weather service austin san antonio tx
243 pm cdt Thu sep 21 2017

Short term (today through Friday)
The shortwave that is bringing numerous showers and thunderstorms to
the houston area this afternoon will continue to push eastward and
weaken through the evening and overnight hours. In its wake weak
isentropic lift combined with the low level jet across west texas
could produce a few isolated showers storms over the edwards plateau
and rio grande plains through the night.

Friday will see the typical summertime sea breeze showers and storms
as high pressure continues to sit over the ARKLATEX region.

Temperatures will continue to run 2-4 degrees above normal for highs
with afternoon heat index values in the mid to upper 90s due to the
gulf moisture in place across central texas

Long term (Friday night through Wednesday)
The high pressure holds on for one more day Saturday, with only
isolated showers and storms possible. By Sunday a large upper trough
digs into the four corners region and chances for rain begin to rise.

The trough of low pressure slowly pushes eastward so rain chances
will begin along the rio grande plains Sunday into Monday and then
spread eastward for Tuesday through Thursday. The trough helps to
push a cold front, equally slow moving, down into texas. While there
is some disagreement between the ECMWF and GFS as to the timing of
the front it will act to only enhance rain chances mid week.

Precipitable water values will range from 1.75-2.25 inches due to
the continued southerly flow ahead of the trough. The best chances
for rain across south central texas look to be Tuesday, Wednesday and
Thursday. With the increased cloud cover and rainfall temperatures
early next week will be kept in the upper 80s with indications of at
least slightly cooler temperatures behind the cold front (whenever it
finally comes through). This far out it is too early to pinpoint
when the heaviest rainfall will occur and where. A lot will depend on
the timing of the cold front, which the models still disagree on.

Preliminary point temps pops
Austin camp mabry 93 76 91 73 92 20 20 10 10 10
austin bergstrom intl airport 93 75 91 71 92 20 20 20 10 20
new braunfels muni airport 93 75 91 72 92 20 20 20 10 20
burnet muni airport 91 73 89 71 90 20 20 10 10 -
del rio intl airport 97 77 94 75 93 10 20 10 10 10
georgetown muni airport 93 74 91 71 91 20 20 10 10 -
hondo muni airport 97 76 94 74 95 20 30 10 10 20
san marcos muni airport 93 75 91 72 92 20 20 20 10 20
la grange - fayette regional 92 74 91 72 92 30 20 20 10 20
san antonio intl airport 94 76 91 74 92 20 20 20 10 20
stinson muni airport 94 76 92 74 92 20 20 20 10 20

Ewx watches warnings advisories
None.

Mesoscale aviation... Hampshire
synoptic grids... Treadway
public service data collection... 33


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Antonio, San Antonio International Airport, TX4 mi82 minSSE 710.00 miMostly Cloudy91°F68°F47%1010.3 hPa
Kelly Air Force Base, TX9 mi75 minSSE 410.00 miMostly Cloudy92°F69°F47%1010.6 hPa
San Antonio, Stinson Municipal Airport, TX13 mi80 minSSE 11 G 1410.00 miA Few Clouds99°F68°F37%1009.4 hPa
Randolph Air Force Base, TX13 mi77 minS 710.00 miFair91°F69°F49%1011.2 hPa
San Antonio Boerne Stage Field, TX17 mi78 minSSE 8 G 1410.00 miPartly Cloudy88°F64°F46%1013.5 hPa
Castroville Municipal Airport, TX21 mi78 minSSE 910.00 miMostly Cloudy96°F64°F36%1012.2 hPa

Wind History from SAT (wind in knots)
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Last 24hrSE14
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SE12SE12SE14SE11SE11SE14SE14SE9S9S6SE9SE8SE9SE11S10S10S11S12S11
G19
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1 day agoS7SE11SE14SE13SE13
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2 days agoSE5SE11SE15SE13SE12SE12SE10SE8S9SE9S8S9S6S5S8SE9S10S11S9S95
G18
S10S10SE11

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 (17,4,5,8)
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Ground Weather Radar Station Austin/San Antonio, TX
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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.