Tuesday, December18, 2018 L-36.com


Marine Weather and Tides
Marble Falls, TX

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:22AMSunset 5:34PM Tuesday December 18, 2018 9:27 PM CST (03:27 UTC) Moonrise 2:45PMMoonset 2:58AM Illumination 88% Phase: Waxing Gibbous; Moon at 11 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 Marble Falls, TX
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location: 30.58, -98.27     debug


Area Discussion for - Austin/San Antonio, TX
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Fxus64 kewx 190036 aaa
afdewx
area forecast discussion... Updated
national weather service austin san antonio tx
636 pm cst Tue dec 18 2018

Update
Please see the 00z aviation forecast discussion below.

Aviation
MVFR CIGS are either already in place or will develop within the next
several hours at area TAF sites. Conditions will likely deteriorate
quickly between 06-07z along the i-35 corridor as the low-levels
saturate. Expect a quick drop into ifr initially, then lifr around
09z. We could also see some showers move through the region during
the evening and overnight hours, especially at kaus. Even with
showers in the area, flight conditions will largely be dominated by
low clouds and fog rather than reduced vsbys due to light rain.

With showers in the area and a little more in the way of mixing in
the lower-levels of the atmosphere, we have opted to keep vsbys at
1 2sm fg for the i-35 sites with a tempo group for 1 4sm fg for early
Wednesday morning. We should begin to see some slow improvement
around 16z, with more significant improvement around 18z as a weak
surface trough moves through the i-35 corridor. Out west at drt, we
will see primarily MVFR conditions this evening, with fog and low
clouds dropping CIGS and vsbys into lifr around 11z. The above
mentioned surface trough will bring a northwest wind shift around 14z
as CIGS begin to lift and scatter.VFR should return around 16z as
winds increase behind the surface trough.

Prev discussion issued 239 pm cst Tue dec 18 2018
short term (tonight through Wednesday night)...

after a stubborn morning with dense fog, mostly cloudy conditions are
prevailing across much of the area with temperatures in the 50s and
60s. A strong shortwave trough is moving into west texas at the
present time and we can see the effects of this system evident on
radar as a thin band of light rain is beginning to enter northern val
verde county. Lift associated with this system will continue to
spread east this afternoon and evening. There are also some coastal
light rain showers to our southeast. This area of low-level lift will
continue to move north and become enhanced as the deep lift from the
upper low arrives to the eastern half of the area. This should equate
to a decent coverage of light rain showers for the eastern areas
tonight. Pops will range from from 20 percent in the west to 70s
across the northeastern cwa. Rainfall amounts will range from a trace
to about a half of an inch with the highest totals once again in the
northeast cwa. In addition, models are showing widespread fog in the
morning once again. However, the low-level lift and precip chances
either should primarily keep things are low clouds, or if fog does
develop, keep the visibility higher and widespread dense fog at bay.

For now, will include the mention of patchy fog across much of the
area and future shifts can update as needed. Lows tonight will bottom
out in the 40s and 50s.

Scattered rain showers will remain possible through the late morning
hours across the eastern CWA as the upper low exits the region.

Northwest winds will move in behind a surface low tomorrow afternoon
with some clearing expected from west to east. Highs tomorrow will
top out in the 60s. A stronger cold front with northerly winds will
move in Wednesday night behind the upper trough axis.

Long term (Thursday through Tuesday)...

these northerly winds Thursday afternoon will be around 20-25 mph for
much of the area and close to wind advisory levels. In addition, the
afternoon humidity values will drop to 22-32 percent which should
lead to elevated fire weather conditions across much of the cwa. The
drier air will be located across the western cwa. Dry weather is then
expected through the weekend with highs in the 60s and lows in the
30s and 40s. Another dry cold front will move through the area
Saturday night, but southerly flow returns again on Monday as
southwest flow aloft sets up over the region. This upper air pattern
with embedded troughs will bring low rain chances again on Monday
and Tuesday.

Preliminary point temps pops
Austin camp mabry 51 66 48 62 41 60 30 0 0 0
austin bergstrom intl airport 51 66 47 63 39 60 30 0 0 0
new braunfels muni airport 51 66 47 63 39 40 20 0 0 0
burnet muni airport 48 64 44 59 36 50 30 0 0 0
del rio intl airport 45 70 45 67 38 10 0 0 0 0
georgetown muni airport 49 65 46 60 38 70 30 0 0 0
hondo muni airport 49 70 46 67 37 20 10 0 0 0
san marcos muni airport 51 67 47 63 39 50 20 0 0 0
la grange - fayette regional 53 66 48 62 39 60 40 - 0 0
san antonio intl airport 51 67 49 64 41 30 20 0 0 0
stinson muni airport 53 68 49 65 41 30 10 0 0 0

Ewx watches warnings advisories
None.

Aviation... Platt
short-term long-term... 17


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Horseshoe Bay Resort Airpark, TX6 mi33 minN 010.00 miLight Drizzle56°F51°F84%1015.6 hPa
Burnet, Burnet Municipal Craddock Field, TX11 mi35 minN 010.00 miLight Rain55°F51°F87%1015.7 hPa
Lago Vista TX, Rusty Allen Airport, TX17 mi33 minN 010.00 miMostly Cloudy56°F56°F100%1015.9 hPa

Wind History from DZB (wind in knots)
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Last 24hrS4S3CalmS4CalmCalmCalmSE3CalmCalmCalmCalmCalmCalmE5S8S11
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1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN3CalmCalmN3N3CalmCalmCalmCalmCalmS3CalmS3
2 days agoS4S4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmCalmCalmCalmS4CalmCalmCalm

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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GOES Local Image of    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Austin/San Antonio, TX (22,6,7,8)
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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.