Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Castle Hills, TX

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:35AMSunset 8:26PM Thursday May 24, 2018 6:35 PM CDT (23:35 UTC) Moonrise 2:59PMMoonset 2:43AM Illumination 76% 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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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 242317 aaa
afdewx
area forecast discussion... Updated
national weather service austin san antonio tx
617 pm cdt Thu may 24 2018

Aviation
00z tafs
vfr conditions are expected across area airports through the
overnight hours. Clouds will develop and spread across south central
texas late tonight as they push into the area from the coastal
plains. MVFR CIGS are expected to develop around 10z to 16z Friday
and affect the i-35 corridor sites. The NAM solution brings very low
cigs vbsys around dawn while other models and guidance are more
optimistic for the time period. Therefore, will go with MVFR
conditions from 10z to 16z Friday. Patchy to isolated areas of fog
are anticipated to form across the coastal plains and southeast part
of the area. There is a slight chance for ifr vbsys to get closer to
the austin area terminals around 12z Friday. However, if this
does happen, it will be short-lived.VFR conditions are expected late
Friday morning through the evening. Light southeast to south winds
will be dominating the area through the forecast period.

For kdrt,VFR conditions will be prevail through the entire forecast
period with winds out of the southeast at 5 to 10 knots. Some models
suggest MVFR CIGS around dawn for few hours, however, area forecast
soundings do not reflect so and have decided to keep MVFR CIGS out of
kdrt tafs for this forecast package.

Prev discussion issued 235 pm cdt Thu may 24 2018
short term (tonight through Friday night)...

the weather is mostly quiet across south-central texas at the present
hour. Temperatures are in the middle 80s to middle 90s with several
more hours of heating still in store for today. Skies are partly
cloudy with some afternoon cumulus with only a few showers so far in
the extreme southeastern cwa. Any additional shower or storm activity
this afternoon should remain confined there. Most or if not all
remaining activity should be over by 00z and will not mention any
precip in the forecast for the evening hours. Any activity in west
texas should also remain out of the CWA and will not mention anything
in our western counties. Evening shift will monitor and update as
necessary. There could be some more patchy fog for the southeast
counties by morning, but not expecting it to reach as far north as
previous nights.

For tomorrow, isolated shower activity will be even less than today
as the atmosphere continues to dry out as a ridge begins to build
east. Highs will top out in the lower 90s to upper 90s or about 2-3
degrees higher than today. Lows tonight and Friday night will be in
the upper 60s to lower 70s.

Long term (Saturday through Thursday)...

the long-term forecast is expected to remain rain free across south-
central texas as high pressure continues to build into the area from
the west. This same high will ensure that the area of disturbed
weather and potential alberto will remain over the eastern gulf of
mexico this weekend and away from the western gulf. Highs through
Wednesday look to be in the upper 90s to 102 with the 100 degree
values in the western and southwestern cwa. The GFS then GOES kind of
bonkers with temperatures Wednesday and Thursday with its raw model
output Thursday showing highs in the 100-109 range across much of
the CWA while the ECMWF still shows persistent temperatures in the
upper 90s to 102 range. In addition, low level flow is from the
south southeast which also does not fit the normal conceptual model
for a record breaking heat wave. We normally would need a down-
sloping W SW wind to promote compressional warming. For the official
forecast will show highs Wednesday and Thursday remaining in that
upper 90s to 102 range with lows throughout the long-term forecast in
the 70s for much of the region. Heat index values will remain below
105 over the next 7 days with afternoon dewpoints remaining below 70
degrees.

Preliminary point temps pops
Austin camp mabry 72 93 72 96 73 - - 0 - 0
austin bergstrom intl airport 70 93 71 95 71 10 - 0 - 0
new braunfels muni airport 70 93 70 96 71 - - 0 - 0
burnet muni airport 70 92 70 95 71 0 - 0 - 0
del rio intl airport 74 98 74 102 75 0 0 0 0 0
georgetown muni airport 70 92 71 95 72 - 10 - - 0
hondo muni airport 71 95 69 99 70 0 0 0 0 0
san marcos muni airport 70 93 71 96 71 10 - 0 - 0
la grange - fayette regional 71 91 72 94 72 10 20 10 - -
san antonio intl airport 72 94 72 97 73 0 - 0 - 0
stinson muni airport 72 95 72 99 73 0 - 0 0 0

Ewx watches warnings advisories
None.

Mesoscale aviation... 17
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 mi44 minESE 910.00 miPartly Cloudy93°F62°F36%1013.1 hPa
Kelly Air Force Base, TX9 mi39 minENE 410.00 miA Few Clouds92°F62°F38%1013.4 hPa
San Antonio, Stinson Municipal Airport, TX13 mi42 minN 010.00 miFair95°F66°F39%1012.6 hPa
Randolph Air Force Base, TX13 mi39 minSSE 510.00 miFair91°F64°F42%1014 hPa
San Antonio Boerne Stage Field, TX17 mi60 minSSE 310.00 miFair86°F60°F43%1016.6 hPa
Castroville Municipal Airport, TX21 mi60 minN 010.00 miFair91°F59°F34%1015.6 hPa

Wind History from SAT (wind in knots)
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Last 24hrE16
G23
E10E12E11SE7SE7SE11E4SE6SE6SE6SE6SE8SE5SE4SE9S7CalmCalm6E6S5E4E9
1 day agoE13E10E12SE12SE10SE9SE11SE8SE7SE8SE9SE6SE7SE6S8SE9SE7S5SE7SE53E9E5E8
2 days agoSE13
G21
SE12E8SE8E9E7E3E5E5E6E7E5SE5SE7SE8S9S9SE7
G15
3S4SE7SE12
G20
E18E17
G20

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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wmap_A
GOES Local Image of SouthCentralPlains    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Austin/San Antonio, TX (19,4,5,8)
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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.