Thursday, March30, 2017 L-36.com


Marine Weather and Tides
George, 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 7:19AMSunset 7:50PM Thursday March 30, 2017 7:30 PM CDT (00:30 UTC) Moonrise 8:23AMMoonset 9:52PM Illumination 13% Phase: Waxing Crescent; Moon at 3 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 George, TX
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location: 30.67, -97.65     debug


Area Discussion for - Austin/San Antonio, TX
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Fxus64 kewx 302334
afdewx
area forecast discussion
national weather service austin/san antonio tx
634 pm cdt Thu mar 30 2017

Aviation
High pressure will keep mainly clear skies in place for the next 24
hours and all area airports will haveVFR conditions. Southerly winds
will increase to 10 to 15 kts during the day Friday and then shift
to the southeast during the early evening.

Prev discussion /issued 345 pm cdt Thu mar 30 2017/
short term (tonight through Friday night)...

a beautiful spring day with sunny skies has settled in across south
central texas under northwest flow aloft and weak westerly 5-10 mph
winds and relatively high pressure at the surface. Temperatures have
warmed up into the mid to upper 70s across the region with some lower
80s still anticipated in the rio grande plains and along the i-35
corridor with some weak downsloping effects. Clear skies are expected
tonight, but warm air advection overnight will allow for lows tonight
to be a bit warmer than last night generally in the mid 50s. The
upper level ridge will move through south central texas tomorrow,
allowing for clear skies and highs in the mid to upper 80s. However,
some lower 90s expected along the rio grande plains as temperatures
approaching 20 deg/c at 850 mb should mix down dry adiabatically to
the surface. Southerly winds are expected to increase dramatically
tomorrow afternoon to 10-20 mph with stronger gusts to 25-30 mph.

These winds coupled with minimum relative humidities in the lower
20s in the rio grande plains and southern edwards plateau and some
teens in val verde county will lead to elevated fire weather
conditions in those areas tomorrow afternoon. Low clouds will return
overnight Friday into Saturday morning to keep lows up in the 60s.

Long term (Saturday through Thursday)...

the main weather impact of the next seven days continues to be this
weekend's slow-moving storm system that should bring some wetting
rainfall and possibly some severe thunderstorms to the region.

Models generally continue to indicate that the upper level trough
digging south from the four corners into the mexican state of
chihuahua by Saturday evening will be positively tilted and
relatively slow moving as it weakens. This would suggest that the
potential for more widespread showers and thunderstorms on Saturday
is lower, which model trends generally reflect aside from the gfs.

However, the potential for a shortwave rotating around the broad
trough into south texas, upper-level divergence associated with a n-s
oriented jet streak to our west, shear values in excess of 40 knots,
and CAPE values in excess of 2000 j/kg continue to suggest the
potential for strong to severe thunderstorms is there for Saturday
afternoon and evening. The biggest question mark will be whether lift
will be focused along a n-s oriented dryline or in a broader area of
nw-se oriented isentropic ascent. Relatively weak midlevel dynamics
and surface cyclogenesis would favor the latter scenario which
decreases our severe threat somewhat for Saturday afternoon.

Therefore, the most likely scenario at the current moment is for
light streamer showers along the escarpment Saturday morning with
some scattered strong to marginally severe thunderstorms across most
of the region as the atmosphere destabilizes. We may have a brief
lull Saturday evening before widespread showers and thunderstorms
develop as the surface cold front approaches the region and the
trough to our west finally begins to eject into coahuila. Some models
suggest storms will develop in the rio grande plains overnight
before merging into a squall line that moves through the region
Sunday morning with the synoptic cold front. Given the shear and
instability present, strong to severe thunderstorms with this line
will be possible. Showers and elevated thunderstorms may last into
Sunday afternoon and early evening as a deepening upper trough that
is becoming more negatively tilted moves through the region before
ending by late Sunday. Rainfall amounts should average around an
inch, but some locally higher totals of 2-3 inches will be possible
particularly along and east of interstate 35. The greatest threat of
locally heavy rainfall capable of producing flash flooding still
appears to be well east of our area.

Pleasant dry spring weather returns for the first half of next week
as southwest flow aloft returns with highs in the 80s and lows in the
50s and lower 60s. A weak front moving through the region late
Tuesday into Wednesday will cause a slight chance of showers and
thunderstorms over our easternmost counties. Otherwise, the second
half of next week looks dry with cooler temperatures a bit closer to
seasonal normals with highs in the upper 70s to lower 80s.

Preliminary point temps/pops
Austin camp mabry 57 87 65 81 65 / 0 0 - 40 60
austin bergstrom intl airport 54 87 63 81 65 / 0 0 - 40 60
new braunfels muni airport 53 87 64 82 65 / 0 0 - 40 50
burnet muni airport 55 85 63 78 62 / 0 0 - 40 50
del rio intl airport 55 91 65 87 61 / 0 0 10 10 50
georgetown muni airport 55 86 63 79 63 / 0 0 - 40 60
hondo muni airport 52 89 64 85 64 / 0 0 - 30 50
san marcos muni airport 53 86 63 81 66 / 0 0 - 40 50
la grange - fayette regional 55 86 64 82 67 / 0 0 - 30 60
san antonio intl airport 56 88 65 83 66 / 0 0 - 30 50
stinson muni airport 54 88 66 83 67 / 0 0 - 30 50

Ewx watches/warnings/advisories
None.

Mesoscale/aviation... 05
synoptic/grids... 04
public service/data collection... Treadway


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown, Georgetown Municipal Airport, TX3 mi41 minSSW 610.00 miFair79°F39°F24%1007.4 hPa
Austin Executive Airport, TX19 mi36 minSSE 410.00 miFair75°F46°F36%1008.1 hPa
Lago Vista TX, Rusty Allen Airport, TX21 mi36 minN 010.00 miFair78°F35°F21%1008.5 hPa

Wind History from GTU (wind in knots)
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Last 24hrW4W4NW4NW10NW13
G23
NW9
G16
NW10
G14
NW11
G18
NW7NW10W8W5W6NW10NW6NW12
G15
--W13
G16
W12W5SW5S7S9SW6
1 day agoSE12
G21
SE13
G18
SE11
G19
SE9
G16
S11
G19
SE9
G18
S13
G17
NW14
G32
NW8E9
G15
W3S7S3S5S6S7S4SW9W6
G14
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G14
SW8
G14
--SW8
G14
W10
2 days agoSE4E3CalmCalmE4SE4S7S6S7SE4SE6SE6SE8SE8SE8S12
G16
SE10
G18
SE10
G15
SE10
G23
SE16
G24
SE16
G20
SE17
G25
SE12
G25
SE9
G18

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
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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 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.