Thursday, July16, 2020
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Marine Weather and Tides
Marble Falls, TX

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:38AMSunset 8:36PM Thursday July 16, 2020 8:34 AM CDT (13:34 UTC) Moonrise 2:10AMMoonset 4:10PM Illumination 15% 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 Marble Falls, TX
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location: 30.58, -98.27     debug


Area Discussion for - Austin/San Antonio, TX
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FXUS64 KEWX 161124 AFDEWX

Area Forecast Discussion National Weather Service Austin/San Antonio TX 624 AM CDT Thu Jul 16 2020

AVIATION. MVFR cigs have built in across parts of South Central Texas this morning including the two San Antonio terminals. AUS and other sites around Austin are reporting a scatter deck at the current time, but have including a TEMPO of BKN015 to reflect brief drops to MVFR through 15z. Similarly recent GOES-16 satellite images show lower cigs trying to work up the Rio Grande Valley so DRT may briefly see MVFR as well, but have maintained the SCT015 there due to lower confidence. By 16z all skies should be VFR once more with breezy south and southeast winds today. While models are not indicating another round of stratus for Friday morning, the overall upper air pattern won't be much different tomorrow, so there is no reason to not expect another round of MVFR tomorrow. That said have only indicated a SCT deck at this point.

PREV DISCUSSION. /ISSUED 207 AM CDT Thu Jul 16 2020/

SHORT TERM (Today through Friday) .

There is finally something more to talk about in the short term besides the heat! While temperatures will continue their slow drop today, with most areas only topping out between 98 and 104, the heat does continue. Have once again bumped the National Blend of Models up a degree as Wednesday's highs came in right around the NBM+1 forecast from yesterday morning. While the ridge will scoot a bit more to the north today the overall pattern is similar between yesterday and today. While the surface ridge moves off toward the eastern Gulf allowing for southeasterly winds to bring in more moisture afternoon heat indices will mainly be between 101 and 105, with only a few spots across the Coastal Plains and Rio Grande Plains getting up into the 106 to 108 range. With the surface high moving away winds this afternoon will also decrease compared to the breezy days we have been seeing. The increase in moisture will also help afternoon relative humidity values which should now be very near or above 30 percent area wide. Still with the prolonged hot and dry period think there could still be some spots of elevated fire weather out west where winds will be the strongest today.

Tomorrow the pattern changes. Satellite and Water Vapor from GOES-16 show moisture and some convection across central and eastern Louisiana tonight. This is associated with an inverted trough which will continue to move westward tonight and end up in deep South Texas by tomorrow afternoon. This will bring the first hint of precipitation (other than the random elevated showers/virga that popped up on radar Wednesday afternoon) to the area. Unfortunately, due to the track of this first inverted trough being far to our south only a lucky few along the Coastal Plains have a shot at isolated showers and a thunderstorm or two. Even that is only a slight chance at best. Most of the precipitation should be confined closer to the Gulf and more towards South Texas. The inverted trough will act to increase cloud cover a bit which will further aid in the gradual temperature slide, with highs on Friday about a degree cooler across the board than today's forecast highs.

LONG TERM (Friday Night through Wednesday) .

The long term remains relatively benign despite the gradual weakening of the subtropical ridge through the period. Although the excessive heat is behind us, the more typical south-central TX warmth and humidity is here to stay for a while as we enter mid- summer. Temperatures will generally top out in the 93-102 degree range during the day, warmest near the Rio Grande, with overnight lows in the 70s. On the western periphery of the sfc high, we'll frequently see southeasterly flow which will mean a return to more humid afternoons is also afoot. Dew points are expected to be in the low to mid 70s east and upper 50s to 60s west. By next week the Coastal Plains will see some upper 70s Td values at times.

Slight chance to low end chance POPs finally return to the forecast mainly in the afternoons and evenings for the Coastal Plains (and primarily Lavaca/DeWitt/Fayette Counties) in conjunction with this more moist airmass as a few weak upper level disturbances will flow in on the subtropical easterlies from time to time to help with large-scale lift. Despite the possibility of a shower or two each day Saturday-Wednesday, not expecting a whole lot of action and most locations in the CWA will continue on with little to no precipitation for the month of July thus far.

PRELIMINARY POINT TEMPS/POPS. Austin Camp Mabry 99 76 99 75 95 / 0 0 - 0 0 Austin Bergstrom Intl Airport 99 75 98 75 95 / 0 0 - 0 0 New Braunfels Muni Airport 100 74 99 75 95 / 0 0 - 0 - Burnet Muni Airport 100 74 99 74 95 / 0 0 - 0 0 Del Rio Intl Airport 104 79 103 78 101 / 0 0 0 0 0 Georgetown Muni Airport 101 76 100 75 97 / 0 0 - 0 0 Hondo Muni Airport 103 74 102 74 99 / 0 0 - 0 0 San Marcos Muni Airport 101 74 100 75 96 / 0 0 - 0 0 La Grange - Fayette Regional 102 77 101 75 98 / 0 0 10 0 0 San Antonio Intl Airport 101 76 100 75 98 / 0 0 - 0 - Stinson Muni Airport 101 76 100 76 97 / 0 0 - 10 -

EWX WATCHES/WARNINGS/ADVISORIES. None.

Short-Term/Aviation . Treadway Long-Term . KCW


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Horseshoe Bay Resort Airpark, TX6 mi59 minN 010.00 miFair73°F69°F89%1018.6 hPa
Burnet, Burnet Municipal Craddock Field, TX11 mi42 minSE 310.00 miA Few Clouds75°F69°F82%1017.2 hPa
Lago Vista TX, Rusty Allen Airport, TX17 mi40 minS 410.00 miPartly Cloudy76°F72°F87%1019 hPa

Link to 5 minute data for KDZB

Wind History from DZB (wind in knots)
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Last 24hrS7S8
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1 day agoCalmSW5SW7S11
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2 days agoSW5SW8
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Austin/San Antonio, TX (9,2,3,4)
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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 numerous 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.