Sunday, May19, 2019 L-36.com


Marine Weather and Tides
Weir, 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 6:32AMSunset 8:22PM Sunday May 19, 2019 6:17 AM CDT (11:17 UTC) Moonrise 8:22PMMoonset 6:17AM Illumination 100% Phase: Full Moon; Moon at 15 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 Weir, TX
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location: 30.67, -97.6     debug


Area Discussion for - Austin/San Antonio, TX
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Fxus64 kewx 190914
afdewx
area forecast discussion
national weather service austin san antonio tx
414 am cdt Sun may 19 2019

Short term (today through Monday)
Early morning surface analysis revealed the dryline had retreated to
a mineral wells to rocksprings to langtry line. With the kdfx vad
wind profiler showing south to southeast winds around 20 knots
through 3kft agl and nocturnal cooling of air north of this boundary,
current expectations are for the dryline to nudge a bit farther to
the north through the remainder of the pre-dawn hours. South of the
dry line, dewpoints surging into the mid to upper 70s have resulted
in patchy fog development across most of south central texas. Deep
moist convergence within the vicinity of the dryline is allowing for
thunderstorm development occur across kinney and val verde counties
early this morning. SPC mesoanalysis for this area shows some very
high SBCAPE values in the 4000-5000 j kg range as well as some modest
mid-level cold air advection associated with the passage of the
large trough over the central plains. Both of these factors, combined
with effective bulk shear in excess of 40 knots, will result in a
risk for an isolated severe thunderstorm or two for areas along the
rio grande early this morning. One such thunderstorm was currently
ongoing as of this writing just southeast of del rio. Large hail
appears to be the main threat, but a damaging wind threat also cannot
be ruled out. Farther east, patchy fog is expected to lift mid to
late morning with onset of daytime heating.

After a warm start this morning with several locations again possibly
tying or setting record high minimum temperatures today (more
information in the climate section below), convergence along the
dryline may allow for a secondary round of thunderstorms to develop
across val verde county this afternoon. The rest of the region is
expected to remain dry today with highs in the upper 80s to mid 90s
under partly cloudy skies. Southeast flow persisting across the
region tonight and associated warm air advection may allow for a few
streamer showers to develop for areas roughly east of highway 281 by
sunrise Monday with another round of patchy fog possible. Best
chances for this fog appear to be across the coastal plains and into
the interstate 25 corridor where winds are forecast to be lighter.

Very warm overnight lows in the low to mid 70s are expected again
tonight.

On Monday, a closed low off the california coast early this morning
swings into the four corners region and amplifies the southwest flow
aloft over the southern plains. Height falls associated with this
system are four standard deviations below normal for this time of
year and this will only help to induce rapid lee cyclogenesis along
the front range of the rockies. While the overall trajectory of this
system places the best dynamics over portions of the texas panhandle,
oklahoma, and kansas, the strength of this system will result in
increasing winds across south central texas during the day on Monday
with winds increasing into the 15-25 mph range across central and
eastern portions of the region and 20-30 mph along the rio grande.

This will also allow for a few streamer showers to linger during the
day across much of the region with an isolated thunderstorm or two
possible along the dryline in val verde county during the afternoon.

Highs on Monday are forecast to range from the mid 80s across the
hill country to upper 90s in the rio grande plains.

Long term (Monday night through Saturday)
By Monday night, the closed low becomes an open wave as it swings
into colorado and pushes the dryline eastward. This may allow for
another broken line of showers and thunderstorms to develop and push
into the region late Monday night and Tuesday morning, with streamer
showers developing ahead of the line Monday night. As we saw this
weekend, the strength of the cap will play a big role in how far
south these storms will be able to extend and presently expect best
rain chances to materialize for areas of north interstate 10. Given
the wind energy associated with this system, a strong wind gust or
two may be possible with these storms. Expect this system to push
east of the region by Tuesday evening. Generally dry conditions are
expected through the remainder of the forecast as upper ridging
spreads into the region with temperatures near to above normal as a
result.

Climate
Above normal overnight temperatures are forecast to continue for the
next few days across south central texas and many locations may tie
or set new record high minimum temperatures. The record high minimum
temperatures for may 19 and may 20 for the four south central texas
climate sites are listed below.

May 19 record high minimum temperatures
location record hi min year
austin bergstrom 76 1960
austin camp mabry 77 1902
san antonio 76 2017
del rio 76 2013
may 20 record high minimum temperatures
location record hi min year
austin bergstrom 75 2010
austin camp mabry 76 1902
san antonio 77 1989
del rio 76 1939

Preliminary point temps pops
Austin camp mabry 92 74 89 74 86 10 10 10 30 60
austin bergstrom intl airport 92 74 89 74 87 10 10 10 30 60
new braunfels muni airport 93 74 91 74 89 10 10 10 30 60
burnet muni airport 91 72 87 69 86 - 10 10 40 60
del rio intl airport 95 75 96 72 93 20 10 20 20 0
georgetown muni airport 92 73 88 73 85 10 10 10 30 60
hondo muni airport 94 76 94 73 92 10 10 10 30 30
san marcos muni airport 92 74 89 73 88 10 10 10 40 60
la grange - fayette regional 92 77 91 76 88 10 10 10 20 50
san antonio intl airport 93 75 90 75 90 10 10 10 30 50
stinson muni airport 94 76 92 76 92 10 10 10 30 40

Ewx watches warnings advisories
None.

Aviation... Treadway
short-term long-term climate... Huffman


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown, Georgetown Municipal Airport, TX5 mi22 minS 34.00 miFog/Mist74°F73°F97%1009 hPa
Austin Executive Airport, TX19 mi43 minSW 73.00 miFog/Mist75°F75°F100%1009.1 hPa
Lago Vista TX, Rusty Allen Airport, TX23 mi23 minSW 55.00 miFog/Mist74°F72°F95%1010.2 hPa

Wind History from GTU (wind in knots)
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Last 24hrS12
G18
SE9
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S7S12
G20
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S12S9S6S9S7S5S4S5SE5--S6S7S6S4SW5
1 day agoSE6SE6SE7S10SE9S10
G16
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2 days agoS5S4S6SW85S8S74SE8S7S11
G15
S9
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SE7
G15
SE9SE5SE5SE7SE7S9
G16
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G16
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G15
S7S8S7

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 (7,2,3,4)
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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.