Monday, January22, 2018 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 7:26AMSunset 6:05PM Monday January 22, 2018 9:56 PM CST (03:56 UTC) Moonrise 10:57AMMoonset 11:17PM Illumination 38% Phase: Waxing Crescent; Moon at 6 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 222331
afdewx
area forecast discussion
national weather service austin san antonio tx
531 pm cst Mon jan 22 2018

Aviation
Vfr flying conditions will prevail tonight through Tuesday night with
few-sct cirrus through the period and few altocu developing out west
Tuesday afternoon and spreading east Tuesday night. Northwesterly
winds decreasing rapidly to around 5 kts or less early this evening,
then turning mainly to easterly most areas on Tuesday, except to
southeasterly 5 to 10 kts out west.

Prev discussion issued 238 pm cst Mon jan 22 2018
short term (tonight through Tuesday night)...

clear skies continue to prevail across south-central texas with
northwest winds around 15 to 20 mph with slightly higher gusts. With
temperatures in the 50s and 60s and dewpoints in the teens and 20s,
humidity values are currently in the 15 to 20 percent range. This is
leading to near critical fire weather conditions across much of the
area. We have had a couple of hot spots on infrared satellite, but
calls to the counties show these have been controlled burns and
therefore there are no active wild fires in our CWA at the present
time. Wind speeds are forecasted to continue to slowly weaken through
the late afternoon and we are not anticipating the need for any red
flag warnings being issued. Otherwise, for tonight, lows will be able
to reach into the 30s with a possible freeze for the hill country
and other low-lying areas near the i-35 corridor.

Tomorrow, light winds will prevail and will begin to become southerly
in the western CWA and easterly across the eastern cwa. This will
allow temperatures to be fairly persistent to today's temperatures
with little warm air advection occurring. Light winds will also
ensure there being no threat for any fire weather conditions in the
area. Lows tomorrow night will also be similar, in the 30s for much
of the area with another possible freeze for the hill country.

Long term (Wednesday through Monday)...

another cool day will occur Wednesday afternoon with temperatures
rising into the lower to middle 60s. A shortwave trough will move
through the southern plains on Thursday morning and winds will
quickly shift back from the south by Thursday afternoon. This will
finally bring some low-level moisture back into the region and with
some decent theta-e advection, there is a chance of showers mainly
for the eastern half of the CWA Thursday night and Friday. By
Saturday, a cold front should move through the region keeping the
chance of showers and perhaps a thunderstorm in the forecast. The gfs
is much weaker with the front, has warmer temperatures, and lingers
low QPF in the area through the remainder of the forecast period. The
ecmwf remains stronger with the front which brings in much cooler
temperatures and dries out the forecast beyond Saturday night. Will
keep the forecast dry on Sunday and Monday and stick closer to the
ecmwf than the GFS on the other forecast fields.

Preliminary point temps pops
Austin camp mabry 38 66 38 62 38 0 0 0 0 0
austin bergstrom intl airport 31 65 33 62 35 0 0 0 0 0
new braunfels muni airport 33 66 35 62 36 0 0 0 0 0
burnet muni airport 34 63 34 60 34 0 0 0 0 0
del rio intl airport 34 67 38 63 39 0 0 0 0 0
georgetown muni airport 33 64 32 62 35 0 0 0 0 0
hondo muni airport 33 69 34 65 36 0 0 0 - 0
san marcos muni airport 35 66 35 63 36 0 0 0 0 0
la grange - fayette regional 37 65 36 64 36 0 0 0 0 0
san antonio intl airport 36 67 36 63 38 0 0 0 0 0
stinson muni airport 35 67 37 63 38 0 0 0 - 0

Ewx watches warnings advisories
None.

Mesoscale aviation... 04
synoptic grids... Lh
public service data collection... Williams


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Antonio, San Antonio International Airport, TX4 mi66 minWNW 510.00 miA Few Clouds47°F24°F41%1020.7 hPa
Kelly Air Force Base, TX9 mi61 minNW 410.00 miFair46°F21°F38%1021.1 hPa
San Antonio, Stinson Municipal Airport, TX13 mi64 minN 410.00 miFair50°F25°F38%1020.9 hPa
Randolph Air Force Base, TX13 mi2 hrsNNW 610.00 miFair50°F22°F34%1021.2 hPa
San Antonio Boerne Stage Field, TX17 mi82 minN 010.00 miFair36°F24°F65%1022 hPa
Castroville Municipal Airport, TX21 mi82 minWNW 510.00 miFair44°F19°F37%1022 hPa

Wind History from SAT (wind in knots)
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Last 24hrNW3CalmNW5N3NW8NW9NW7NW7W5NW4NW4NW4N14
G22
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NW11NW12N9NW6NW4W5
1 day agoCalmCalmCalmSE7S9S11
G16
S9S7S8S5SE9SE7SE8S8SE10SE7SE12S9SW4S8SW5W4CalmCalm
2 days agoSE5SE7S6S5SW6SW4SW3W3CalmW3S3SW6SW6SW6S5S6S6S6S7S10S3W3CalmNW3

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 (22,6,7,8)
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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.