Wednesday, August12, 2020
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Marine Weather and Tides
Kerrville, 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 7:01AMSunset 8:21PM Wednesday August 12, 2020 6:19 PM CDT (23:19 UTC) Moonrise 12:11AMMoonset 2:01PM Illumination 34% Phase: Waning Crescent; Moon at 24 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 Kerrville, TX
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location: 30.01, -99.21     debug


Area Discussion for - Austin/San Antonio, TX
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FXUS64 KEWX 121950 AFDEWX

Area Forecast Discussion National Weather Service Austin/San Antonio TX 250 PM CDT Wed Aug 12 2020

SHORT TERM (Tonight through Thursday Night). The subtropical ridge will continue to dominate over Texas during this period. At the surface, high pressure in the Gulf will keep the low level flow from the south to southeast. This will mean little change in the ongoing forecast. Tonight will be another very warm night under mainly clear skies over the western half of the CWA. Scattered low clouds will develop across the east around sunrise. Thursday will be another hot day with no significant change in the pattern. Much of the area will have high temperatures at or above 100. The question will be about the heat index. Right now it looks like dewpoints will be a bit lower than today and this will moderate the heat index keeping it mainly below Heat Advisory criteria, but it will be close. For now we will let later forecasts decide whether to issue the product. Either way, it will be hot. Be aware and be careful. Thursday night will continue the streak of very warm and dry nights.

LONG TERM (Friday through Wednesday). Elevated heat index values will continue to be a concern for Friday and the weekend for the areas mainly near and east of I-35. The strong H5 ridge axis should not be quite as oppressive as the one from mid July, but has trended stronger in the past couple days. A few daily MaxT records will be at risk each day through the weekend, but this time of year, the deviation between normal MaxT and the records are only around 6 degrees at times thanks to a usually dry time of year and normal MaxT values generally around 97/98.

Onshore flow is only a partial time of the diurnal cycle right now so as nighttime winds go more S/SSW, or more continental in nature, the opportunity for mixing out dewpoints to lower values increases each day. Thus, as noted in the short-term, while the values shown the forecast suggest near advisory level heat indices, it's probably best to handle on a day-to-day basis. Our highest humidity and thus heat index potential might occur on Monday as the upper ridge center lifts northward into the Great Basin and allows for a more unstable pattern to spill south across TX during the day. If late afternoon timing occurs with this instability, a few strong storm gusts may need to be considered; for now will just keep it as an AFD topic until we get closer to Monday. The unstable pattern could repeat Tuesday, but most models show the northerly flow pattern weakening on Wednesday. The instability and moisture increase could lead to a reduction in MaxT for Monday and Tuesday, but it should still be plenty hot.

PRELIMINARY POINT TEMPS/POPS. Austin Camp Mabry 78 103 77 103 77 / 0 0 0 0 0 Austin Bergstrom Intl Airport 77 101 77 103 76 / 0 0 0 0 0 New Braunfels Muni Airport 76 100 76 102 75 / 0 0 0 0 0 Burnet Muni Airport 76 100 76 103 76 / 0 0 0 0 0 Del Rio Intl Airport 79 103 79 106 77 / 0 0 0 0 0 Georgetown Muni Airport 78 102 78 105 77 / 0 0 0 0 0 Hondo Muni Airport 76 101 76 105 75 / 0 0 0 0 0 San Marcos Muni Airport 77 101 76 103 75 / 0 0 0 0 0 La Grange - Fayette Regional 78 101 78 103 77 / 0 0 0 0 0 San Antonio Intl Airport 78 101 77 103 76 / 0 0 0 0 0 Stinson Muni Airport 77 101 77 102 76 / 0 0 0 0 0

EWX WATCHES/WARNINGS/ADVISORIES. Heat Advisory until 7 PM CDT this evening for Atascosa-Bastrop- Bexar-Caldwell-Comal-De Witt-Fayette-Gonzales-Guadalupe-Hays-Karnes- Lavaca-Lee-Travis-Williamson-Wilson.

CLIMATE. /MAXT RECORDS/ AUG 13th 14th 15th 16th AUS 103/2000 104/1956 104/1956 104/1951 ATT 107/1925 107/2013 105/2011 107/1923 SAT 106/1962 103/2013 102/2013 103/1969 DRT 108/2019 106/2015 105/2001 107/2019

Short-Term/Aviation . 05 Long-Term . Oaks Decision Support . KCW


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kerrville, Kerrville Municipal Airport/Louis Schreiner Field, TX7 mi24 minSSE 1010.00 miFair98°F62°F31%1013.5 hPa
Fredericksburg, Gillespie County Airport, TX23 mi44 minS 1010.00 miPartly Cloudy97°F58°F28%1013.9 hPa

Link to 5 minute data for KERV

Wind History from ERV (wind in knots)
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Last 24hrSE13S10
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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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wmap_A
GEOS Local Image of    EDIT
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 (19,4,5,8)
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Ground Weather Radar Station Austin/San Antonio, TX
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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.