Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Olmos Park, TX

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:27AMSunset 7:50PM Sunday March 26, 2017 7:35 PM CDT (00:35 UTC) Moonrise 5:39AMMoonset 5:35PM Illumination 0% Phase: New Moon; Moon at 29 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 Olmos Park, TX
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location: 29.4, -98.48     debug


Area Discussion for - Austin/San Antonio, TX
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Fxus64 kewx 262358 aaa
afdewx
area forecast discussion... Updated
national weather service austin/san antonio tx
658 pm cdt Sun mar 26 2017

Aviation
/00z tafs/
vfr conditions will prevail across area terminals through late
evening. Clouds will develop along the coastal plains and then move
toward the north this evening and over the i-35 sites by midnight
tonight. MVFR CIGS are anticipated by 05z with ifr CIGS starting
around 08z/09z across austin and san antonio airports. There are
indications from several hires models and guidance for CIGS to go
down as low as lifr for austin around the 12z time frame and have
included this as such for kaus. MVFR are forecast to linger around
through 16z for the i-35 terminals withVFR returning by 17z and
staying that way through Monday evening. Southeasterly winds will
prevail through the forecast period with 5 to 15 knots overnight into
Monday morning and decreasing 5 to 10 knots Monday afternoon.

Kdrt should remainVFR through late tonight with MVFR expected by
11z. There is a chance for CIGS to lower to lifr for an hour or two
just like this morning and have added it to this forecast cycle.

Good mixing takes place out west along the rio grande by late morning with
vfr returning by 16z Monday.

Prev discussion /issued 319 pm cdt Sun mar 26 2017/
short term (tonight through Monday night)...

severe weather risk this afternoon remains non-zero but is still
extremely marginal. Currently, satellite imagery is showing some
bubbling CU from mason county to fayette county. Latest laps
soundings show a weak cap struggling to hold on this afternoon and
rap forecast soundings keep it holding on through out the afternoon.

Also of note is the presence of about 20-50 j/kg of CIN working
against heated parcels at the surface. If a surface boundary of some
kind were present, concerns would be much higher for the chance for
ci this afternoon, but with surface dewpoints in the 50s west of i-35
and lack of lifting mechanism present east, think its very unlikely
parcels will be able to tap into the ripe conditions aloft. Spc
mesoanalysis shows LFC heights over 4000m thus surface parcels will
need to overcome inhibition, weak surface moisture, and without any
help to lift it to get to that height. Thus, confidence is extremely
low for the chance for storms.

Should one occur though, effective bulk shear, lots of instability,
and strong mid level lapse rates all mean the possibility for strong
to severe storms with large hail and damaging winds.

Long term (Tuesday through Sunday)...

the focus for the short term will be the prospect of severe weather
with our next upper low Tuesday and Wednesday. SPC has already
outlined marginal to slight risk for large hail, damaging winds, and
tornadoes Tuesday and a day 4 area outlined for the austin area and
northeast Wednesday. Our best timing for severe potential will likely
be late Tuesday night, and maybe as late as early Wednesday morning
(after midnight) as we inherit a mature system that develops near
abilene. Latest ECMWF shows convection initiating along the dry line
near the childress area and unzipping southward to del rio by
midnight Tuesday night. Overnight, these cells become more
dynamically driven and likely coalesce into a linear system that
pushes across the CWA from the west and impacts the i-35 corridor by
12z Wednesday morning. While pwat values over 1.5" have been
advertised thus far, both GFS and ECMWF quickly exit the system after
18z Wednesday and should limit flash flooding potential. Should this
system indeed become a linear system as advertised, the principle
threat should be damaging straight line winds and hail.

Preliminary point temps/pops
Austin camp mabry 67 88 67 84 67 / 10 10 - 20 40
austin bergstrom intl airport 66 88 67 84 67 / 10 10 - 20 40
new braunfels muni airport 66 88 67 84 67 / - 10 - 20 40
burnet muni airport 63 85 63 80 64 / 10 - - 30 70
del rio intl airport 60 92 66 87 62 / - 0 - 30 50
georgetown muni airport 66 87 65 81 65 / 10 - - 30 50
hondo muni airport 65 92 66 85 66 / - - - 30 40
san marcos muni airport 66 89 66 84 68 / 10 10 - 20 40
la grange - fayette regional 68 87 67 84 69 / 10 10 - 10 30
san antonio intl airport 67 89 68 84 68 / - - - 30 40
stinson muni airport 67 89 67 84 68 / - - - 20 40

Ewx watches/warnings/advisories
None.

Mesoscale/aviation... 17
synoptic/grids... Allen
public service/data collection... Williams


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kelly Air Force Base, TX5 mi37 minSE 1010.00 miFair82°F63°F53%1006.5 hPa
San Antonio, Stinson Municipal Airport, TX5 mi42 minSE 10 G 2210.00 miFair83°F64°F53%1005.9 hPa
San Antonio, San Antonio International Airport, TX10 mi44 minSSE 1110.00 miA Few Clouds83°F57°F43%1006 hPa
Randolph Air Force Base, TX14 mi37 minSE 1310.00 miFair79°F66°F65%1007.1 hPa
Castroville Municipal Airport, TX20 mi60 minSSE 1010.00 miFair87°F52°F31%1007.8 hPa

Wind History from SKF (wind in knots)
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Last 24hrS5S6S7S5S5SE5S9S7E3SE3SE5SE6SE8SE7S15
G20
SE12SE14S9S11
G18
SE13
G17
S16
G24
SE14
G21
S13SE10
1 day agoCalmCalmCalmCalmNW6NW4CalmNW3CalmNW4CalmNW3N6N10N7NW4N3CalmCalmS4S3W3S7S6
2 days agoSE13
G20
SE16
G25
SE17
G23
SE16
G22
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G21
SE19
G24
SE15SE15
G22
S15S10S9SE9S5SE5S4S6S8S10SW7SW7
G15
SW4SW6S8SW5

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 (20,4,5,8)
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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.