Friday, August18, 2017 L-36.com


Marine Weather and Tides
Hudson Bend, 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 6:59AMSunset 8:10PM Friday August 18, 2017 1:10 PM CDT (18:10 UTC) Moonrise 2:39AMMoonset 4:46PM Illumination 13% Phase: Waning Crescent; Moon at 26 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 Hudson Bend, TX
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location: 30.41, -97.93     debug


Area Discussion for - Austin/San Antonio, TX
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Fxus64 kewx 181751
afdewx
area forecast discussion
national weather service austin san antonio tx
1251 pm cdt Fri aug 18 2017

Aviation 18z_tafs
although all i-35 TAF sites areVFR, MVFR ceilings have persisted
into the early afternoon hours west of Sat ssf to drt where ceilings
should lift toVFR between 18-19z. Winds will generally be southerly
this afternoon at 10-15 knots and gradually back to a more s-se
heading by this evening with stronger gusts up to 20 knots possible
for a few hours after sunset. Thunderstorms forming over the mexican
mountains should remain west of drt. The main forecast issue for
tonight will be whether low ceilings develop once again, but models
generally agree that with winds veering to southerly or s-sw, onshore
flow from the gulf will be weak tonight at the i-35 sites. Thus, we
kept all sitesVFR overnight with a mention of sct025 or above from
7-15z tomorrow as confidence in MVFR ceilings developing is low.

Prev discussion issued 654 am cdt Fri aug 18 2017
update...

please see the 12z aviation forecast discussion below.

Aviation...

MVFR CIGS will continue for the i-35 terminals until roughly 15z.

Elsewhere, some clouds are developing along the rio grande near drt,
but cloud bases will remainVFR. South to southeast winds will
continue through today and should become gusty for the late afternoon
and early evening. Low clouds will likely develop once again early
Saturday morning and bring another round of MVFR CIGS to the i-35
sites.

Prev discussion... Issued 304 am cdt Fri aug 18 2017
short term (today through Saturday)...

very little to mention in the short term forecast as high pressure
continues to dominate the region. The stagnant air mass over the
region will provide very little variation in forecast MAX t, min t,
pop wx among other variables. MAX t values should be about a degree
or two above yesterday's highs and with slightly lower dewpoints,
which should keep heat indices at bay and prevent another heat
advisory issuance.

Saturday should be more of the same as the gfs20 ECMWF canadian all
indicate a 593 high centered directly over south central texas.

Nearly identical MAX t's are expected Saturday as today.

Long term (Saturday night through Thursday)...

the long term period focuses around a tutt low pushing west across
the gulf of mexico and approaching the southeast texas coast by
Tuesday morning. This will shift the h5 pattern, moving the 593 dm
high center to the northwest. The tutt could bring some low end pop
chances with it as this slightly disrupts the very stable pattern as
of late. ECMWF solutions are overly bullish on QPF production, at
least with the 00z run. Taking a closer look at euro ensemble
spreads, a conservative approach appears to be the best course of
action with pop QPF as a significant standard deviation exists in the
ensemble guidance. Thus, do not have more than a slight chance pop
mention through mid week next week.

Once the tutt low shifts farther west into the rio grande plains and
the big bend region, a more favorable moisture flux vector may allow
for some better shots at rainfall late Thursday night into Friday
morning.

The arrival of this weak h5 disturbance mid week should also help to
bring MAX temps down a couple degrees with some increased cloud cover
and decreased thicknesses.

Preliminary point temps pops
Austin camp mabry 77 100 77 100 76 0 - 0 0 0
austin bergstrom intl airport 76 100 75 99 75 0 - 0 - 0
new braunfels muni airport 75 99 75 99 75 0 - 0 - 0
burnet muni airport 74 97 74 96 74 0 - 0 0 0
del rio intl airport 78 102 78 101 78 - 0 0 0 0
georgetown muni airport 76 98 75 98 75 0 0 0 - 0
hondo muni airport 74 101 74 101 74 0 0 0 0 0
san marcos muni airport 75 100 75 99 75 0 - 0 - 0
la grange - fayette regional 76 100 76 100 76 0 10 - 10 -
san antonio intl airport 76 99 76 99 76 0 - 0 0 0
stinson muni airport 76 98 76 98 76 0 - 0 0 0

Ewx watches warnings advisories
None.

Mesoscale aviation... Lh
synoptic grids... Allen
public service data collection... 30


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lago Vista TX, Rusty Allen Airport, TX6 mi36 minSW 510.00 miFair90°F67°F47%1018.6 hPa
Austin City, Austin Camp Mabry, TX11 mi20 minS 510.00 miFair96°F70°F43%1015.6 hPa
Austin Executive Airport, TX19 mi16 minSW 910.00 miFair91°F69°F49%1017.3 hPa
Austin-Bergstrom International Airport, TX21 mi18 minS 9 G 1510.00 miA Few Clouds94°F71°F48%1015.4 hPa
Georgetown, Georgetown Municipal Airport, TX23 mi15 minSSW 1010.00 miFair92°F69°F47%1016.8 hPa
Horseshoe Bay Resort Airpark, TX24 mi16 minWSW 510.00 miFair93°F68°F45%1017.9 hPa

Wind History from RYW (wind in knots)
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Last 24hrSW6S8S10
G14
S8
G18
S4S5S4S4N10
G17
NE9E3S4S4S6S7S6S5S8SW5S5S7
G14
SW5SW8SW7
G14
1 day agoS9
G15
S9
G17
S8
G17
S9
G16
SE4S6S7S6SE9
G16
S13
G20
S8
G16
S9
G15
S9S11S8S10
G15
S10
G16
SW10
G17
SW7S7S8SW8
G15
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G15
2 days agoS8
G16
S7
G16
S9
G15
S10
G16
S5S9
G17
SE6S8S11
G14
S9
G17
S8
G15
S4S6S7
G17
S6S6
G17
S12
G20
S7
G14
S11
G14
S8S9
G17
S9
G14
S10
G19
S10
G17

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 (14,3,4,5)
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Ground Weather Radar Station Central Texas
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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.