Wednesday, March29, 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 7:24AMSunset 7:52PM Wednesday March 29, 2017 10:15 AM CDT (15:15 UTC) Moonrise 7:43AMMoonset 8:48PM Illumination 5% Phase: Waxing Crescent; Moon at 2 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 291126
afdewx
area forecast discussion
national weather service austin/san antonio tx
626 am cdt Wed mar 29 2017

Update
12z aviation update below.

Aviation
A line of tstms will continue to exit the region this morning and
not impact the TAF sites. Some patchy fog and low ceilings are
possible through 13-14z at sat/ssf/aus resulting in MVFR to ifr
conditions. OtherwiseVFR conditions through the day and tonight.

W winds developing by afternoon around 10 kts at sat/aus, but
stronger at drt with some gusts 20-25 kts. A secondary cold front
this evening will result in a wind shift to the nw.

Prev discussion /issued 355 am cdt Wed mar 29 2017/
short term (today through Thursday)...

as of 3 am, radar loops showing the southern portion of the squall
line to be losing its near severe and mostly elevated velocity
signatures, but will leave up the watch along the front edge over
i-35 for another hour. Following the trends of the hrrr/rap, will
show a more progressive clearing trend for the morning pops and plan
on using conservative hwo wording regarding the late morning strong
storm potential over southeast counties.

Continuing the trend on temperatures, earlier clearing should
translate to warmer than blended guidance MAX temps for today. Good
midday packing of isobars over the edwards plateau should enhance
mixing and drop rh values in the low teens along the rio grande,
while picking surface winds to around 20 mph with gust over 35 mph nw
of drt. Radar precip estimates suggest all of val verde county had
receive over 0.2 inches of rain with the drier 10-hour fuel moisture
areas around drt having a little more. Thus will expect this moisture
to offset the critical fire weather conditions forecast for western
val verde county and settle on a near critical wording. Farther east
and south, winds and especially gusts should drop off to lower
values. NW boundary layer to 850 mb winds at 20 to 35 mph should
enhance cooling and drying across the region, leaving a seasonal
morning low in the upper 40s north to mid 50s southeast. Westerly
transport winds resuming for Wednesday will be much lighter but
should still bring afternoon temps back to above normals.

Long term (Thursday night through Tuesday)...

light winds should continue Thursday night, and there may enough
ground moisture for some patchy ground fog given the rains. Will keep
with the model data and leave out for now. Returning south winds
Friday will accelerate late in the day as another large upper low
drops southeast across the great basin towards tx. Initially, the
mid levels of the atmosphere will be very dry, so there should still
be abundant sunshine and warm temps for Friday. Continued deepening
of the low level moist layer and closer approach of the upper low
will likely bring a mostly cloudy and not as warm day Saturday, with
a dryline feature suggested to set up over central tx in the afternoon
by deterministic models. As suggested in the SPC extended outlooks,
instability and wind shear would likely be sufficient for a few
severe storms. Continued sewd digging of the upper low is then
expected to bring additional rounds of storms from the SW Saturday
night with rain still likely over the eastern two-thirds of the area
Sunday. The repeated rounds of rain could mean some locally heavy
downpours over 2 inches will be possible this weekend. Gfs/ecm
solutions show good agreement on the northeastward ejection of the
upper low Sunday evening with mostly stable and warm weather to
follow for early next week.

Preliminary point temps/pops
Austin camp mabry 86 54 81 56 87 / 10 - 0 0 0
austin bergstrom intl airport 86 54 80 50 87 / 10 - 0 0 0
new braunfels muni airport 89 53 81 53 87 / - - 0 0 0
burnet muni airport 83 51 77 54 85 / - - 0 0 0
del rio intl airport 86 53 83 57 93 / 0 0 0 0 0
georgetown muni airport 85 53 79 53 85 / 10 - 0 0 0
hondo muni airport 87 52 83 53 89 / 0 0 0 0 0
san marcos muni airport 87 53 80 53 87 / 10 - 0 0 0
la grange - fayette regional 85 56 78 54 86 / 50 10 0 0 0
san antonio intl airport 90 54 82 55 88 / - - 0 0 0
stinson muni airport 88 54 81 55 89 / - - 0 0 0

Ewx watches/warnings/advisories
None.

Mesoscale/aviation... Runyen
synoptic/grids... Oaks


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kelly Air Force Base, TX5 mi77 minN 00.15 miFog61°F60°F98%1007.3 hPa
San Antonio, Stinson Municipal Airport, TX5 mi22 minVar 35.00 miFog/Mist66°F62°F87%1008.1 hPa
San Antonio, San Antonio International Airport, TX10 mi24 minN 01.50 miFog/Mist61°F60°F97%1008 hPa
Randolph Air Force Base, TX14 mi17 minNE 44.00 miFog/Mist61°F61°F100%1009 hPa
Castroville Municipal Airport, TX20 mi40 minN 010.00 miFair61°F61°F100%1009.8 hPa

Wind History from SKF (wind in knots)
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Last 24hrSE11SE17SE15
G24
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G25
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G28
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SE17
G27
SE17
G26
SE15
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E10E12E11
G20
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G24
CalmNW7S4S5CalmCalmCalmN3CalmNE3
1 day agoCalmCalmS4SE8SE5SE7SE8SE8SE6E4E5SE11SE10SE11SE10SE10SE8SE7E5E8E8E7E10SE12
2 days agoSE12SE14S9S11
G18
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G17
S16
G24
SE14
G21
S13SE10SE13SE12
G21
SE13SE12SE11SE12SE10SE8SE5SE4E5CalmE3E5SE4

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
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Austin/San Antonio, TX (11,2,3,4)
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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.