Monday, September25, 2017 L-36.com


Marine Weather and Tides
George, 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 7:20AMSunset 7:23PM Monday September 25, 2017 1:45 PM CDT (18:45 UTC) Moonrise 11:16AMMoonset 10:11PM Illumination 26% Phase: Waxing Crescent; Moon at 5 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 George, TX
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location: 30.67, -97.65     debug


Area Discussion for - Austin/San Antonio, TX
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Fxus64 kewx 251756
afdewx
area forecast discussion
national weather service austin san antonio tx
1256 pm cdt Mon sep 25 2017

Aviation 18z TAF cycle
vfr mostly prevails across south-central texas with the exception of
local MVFR and isolated ifr conditions where shra and tsra are
ongoing across the coastal plains as well as portions of the rio
grande plains. The strongest activity will remain focused towards the
rio grande plains through the afternoon and overnight into Tuesday
morning. The coastal plains activity will weaken and mostly dissipate
by early evening as heating decreases. Another round of ifr and lifr
conditions are expected for Sat ssf aus Tuesday morning. Kaus will
likely experience lower visibilities and fog also. Slow improvement
to MVFR andVFR will occur tomorrow with scattered tsra across the
region. A more concentrated tsra complex could be near kdrt early
Tuesday morning and will monitor closely on TAF weather wording
during that time frame. Some rainfall could be quite heavy and lead
to localized flooding impacts. Turbulence in and near storms should
be expected with tops to fl400.

Prev discussion issued 1022 am cdt Mon sep 25 2017
update... Pops increased... Heavy rain possible near rio grande
a quick update was issued this morning to reflect the persistent
area of showers and isolated storms over the western counties. A
flash flood watch should be issued for tonight, will wait until early
afternoon for further analysis and office collaboration in order to
pinpoint expected QPF totals and how far east to extend the watch.

At this time it appears unlikely that a watch will be needed for
counties along and east of hwy 281. Radar dual pol estimates indicate
2 to 2.5 inches has already fallen over SE val verde county but
radar and rapid refresh model trends suggest mostly light showers for
this afternoon, followed by heaver activity picking up in the
evening.

Prev discussion... Issued 514 am cdt Mon sep 25 2017
short term (today through Tuesday)...

early morning radar data shows convection is underway across most of
val verde county as well as to the south over northern coahuila,
mexico. While a little difficult to discern at the present time, it
appears we could be seeing the beginning of an MCV developing
southwest of del rio. Otherwise, the water vapor satellite loop shows
a tropical moisture connection from tropical storm pilar into the
southwestern portion of texas, including the rio grande plains.

Given recent radar trends along with hi-res models, we will go with
high rain chances along the rio grande today. A moist air mass is
already in place as evidenced by the 25 00z drt sounding with a
precipitable water value just shy of 2". Some locally heavy rain is
possible today given the moist conditions and training of showers and
thunderstorms. Across the remainder of the region, we should see
isolated to scattered showers and thunderstorms, especially during
the afternoon hours during peak heating hours. Cloud cover and
precipitation should keep highs generally in the 80s, except south of
highway 90 west of i-35 where some lower 90s are forecast.

The concern for a heavy rain event across the rio grande plains and
southern edwards plateau beginning Tuesday continues to grow given
recent model consistency along with the very latest round of model
guidance. Deep moisture is already in place and will remain in place
as additional moisture and upper level energy from tropical storm
pilar move northward into the region. While it will be difficult to
time these shortwaves, it appears one stronger wave will move into
the rio grande plains late this afternoon, with an even stronger wave
Tuesday afternoon. With this in mind, we have increased rain chances
across the rio grande plains on Tuesday and Tuesday night. Forecast
soundings continue to show tall, skinny capes along with precipitable
water values just shy of 2.5". All this leads to a continued threat
for heavy rain on Tuesday and we will likely need a flash flood watch
for the western portion of our area beginning Tuesday.

Long term (Tuesday night through Sunday)...

the weather pattern will not change significantly for Tuesday night
as heavy rainfall concerns continue along the rio grande and southern
edwards plateau. If anything, some of the heavier rains may nudge
eastward into the highway 83 corridor. On Wednesday, a cold front is
expected to move southward across west texas. The leading edge of
this front should manage to push southward into the western hill
country and southern edwards plateau during the afternoon hours. This
front will likely aid in the development of showers and storms. As
the front moves southward Wednesday night into Thursday morning,
concerns for additional heavy rains may continue across portions of
the rio grande plains, especially if the ECMWF verifies. With this
in mind, we have increased rain chances for Wednesday night and
Thursday morning across the mentioned areas. Storm total precipitation
amounts from Tuesday into early Thursday morning have been increased
to 4 to 6" with isolated amounts near 9". The heaviest amounts are
expected to occur west of highway 83. Farther east, we should see
average amounts drop into the 1-3 inch range along highway 281.

Some drier air should begin to filter in from the north beginning
Friday. This should bring a gradual decrease in rain chances from
east to west for Friday into the upcoming weekend.

Preliminary point temps pops
Austin camp mabry 73 87 73 87 72 20 50 30 20 20
austin bergstrom intl airport 72 87 72 86 71 20 50 30 20 20
new braunfels muni airport 73 86 72 86 71 30 70 40 30 20
burnet muni airport 71 84 70 82 68 20 50 50 40 30
del rio intl airport 73 85 71 84 70 90 90 90 70 70
georgetown muni airport 72 87 72 85 70 20 40 30 30 20
hondo muni airport 74 88 73 88 70 60 80 70 60 40
san marcos muni airport 73 86 72 87 71 20 60 30 30 20
la grange - fayette regional 73 89 73 88 72 20 30 10 20 20
san antonio intl airport 74 86 73 86 72 40 70 50 50 20
stinson muni airport 75 86 74 86 72 40 70 50 50 30

Ewx watches warnings advisories
None.

Mesoscale aviation... Allen
synoptic grids... Oaks
public service data collection... Williams


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown, Georgetown Municipal Airport, TX3 mi49 minS 810.00 miMostly Cloudy86°F70°F59%1011.6 hPa
Austin Executive Airport, TX19 mi70 minSE 510.00 miPartly Cloudy82°F69°F66%1011.8 hPa
Lago Vista TX, Rusty Allen Airport, TX21 mi50 minE 710.00 miMostly Cloudy85°F68°F58%1012.2 hPa

Wind History from GTU (wind in knots)
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Last 24hrS8
G15
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SE54SE4SE3SE3SE4SE4SE4S7SE4SE3CalmCalmCalmE3SE45SE8SE7S8
1 day agoSE8SE8SE8SE8E10SE5E4SE3--SE3S7S7S6S7SE3S4SE5SE5SE4SE3S5SE55SE5
2 days agoSE9S9
G17
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S9SE6S7SE5S5S5S5S4S5S5S5S4S3CalmSE3SE4SE6S4SE7SE7--

Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of SouthCentralPlains    EDIT
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Wind Forecast for Austin/San Antonio, TX (14,3,4,5)
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Ground Weather Radar Station Central Texas
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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.