Sunday, January26, 2020
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Marine Weather and Tides
Weir, 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 7:24AMSunset 6:01PM Saturday January 25, 2020 11:57 PM CST (05:57 UTC) Moonrise 8:08AMMoonset 6:52PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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 Weir, TX
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location: 30.67, -97.6     debug


Area Discussion for - Austin/San Antonio, TX
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FXUS64 KEWX 260509 AFDEWX

Area Forecast Discussion National Weather Service Austin/San Antonio TX 1109 PM CST Sat Jan 25 2020

AVIATION. /06Z TAFS/ Based on the lastest HRRR and Tx Tech WRF output, the periods of light drizzle look to be more uniform along the I-35 terminals than they appeared to be in the late afternoon runs. Thus will show a period of 1/4 mile vsbys for all three stations. Light west to northwest winds developing near or just before daybreak would suggest that the lowest vsbys may shy away from the daylight hours with gradual vsby and cig improvements from 12Z to 15Z. At Drt, the low clouds have arrived but timing has been slower than projected. Thus am inclined to show a smaller window than preveiously, on the period of 1/2 mile vsbys. Thus all sites are expected to go VFR at 15Z in this update.

PREV DISCUSSION. /ISSUED 242 PM CST Sat Jan 25 2020/

SHORT TERM (Tonight through Sunday Night) . As expected, cloud cover has been increasing across the area from west to east this morning and early afternoon as the southern stream shortwave trough continues to move through northern Mexico. High temperatures have exceeded expectations a bit this afternoon, with highs now on track to reach the mid to upper 60s for most locations. A few isolated showers are possible this afternoon across southern portions of the region. Shower chances (and possibly a thunderstorm or two) will increase later this evening and into the early overnight period as isentropic ascent increases, mainly for locations along and east of the Interstate 35 corridor. QPF should remain below a quarter inch for most locations, with higher amounts possible for far eastern portions of South Central Texas (Lee, Fayette, Lavaca, DeWitt Counties). Areas of fog and drizzle will also be likely late tonight and into early Sunday morning, with some dense fog possible.

The trough axis and attendant weak Pacific cold front will move through the region by mid to late Sunday morning and drier air will filter into the region in its wake. This will allow for clearing from northwest to southeast, and by Sunday afternoon clear skies should prevail with highs in the low to mid 70s and a light north northwest breeze. Clear skies will continue through Sunday night, but some residual moisture will keep overnight lows a couple degrees above normal (lows in the mid 40s for most locations).

LONG TERM (Monday through Saturday) . Zonal flow is forecast for Monday ahead of the next upper level system to affect the area. Expect plenty of sunshine for most of the day and high temperatures in the 70s. By late Monday afternoon into the evening, increased moisture and the set up of a low level jet ahead of the next Pacific front and associated upper level disturbance may result in showers across the Rio Grande and Edwards Plateau Monday night. Showers and isolated thunderstorms are expected overnight into Tuesday morning as the Pacific front moves across the area. Rainfall amounts could range from one quarter to three quarter of an inch for the most parts. Weather conditions begin to improve on Tuesday morning from west to east with some lingering showers and an isolated thunder across the far east of South Central Texas mid to late afternoon.

Cool and pleasant weather conditions are anticipated for Wednesday with highs in the mid 60s and on track with climate values for this time of the year.

Chances for rain return late Thursday into Friday as another Pacific front and upper level disturbance moves over the region. At this time, the medium-range models are trying to get a handle on it with the GFS being the faster while the ECMWF solution comes about 6 hours behind (based on main trough axis). Also, the GFS is less aggressive with QPF while the ECMWF brings the potential for more rainfall accumulations(one quarter to an inch more over some spots).

Overall, this system is going to help some areas to get rainfall amounts ranging from one quarter to an inch with isolated spots getting higher amounts just to help the drought some (mainly east of I-35).

Dry and a warming trends is expected for the upcoming weekend as an upper level ridge builds across the area.

PRELIMINARY POINT TEMPS/POPS. Austin Camp Mabry 55 73 45 71 51 / 30 0 0 0 40 Austin Bergstrom Intl Airport 54 73 44 72 50 / 40 0 0 0 40 New Braunfels Muni Airport 55 74 45 72 51 / 50 0 0 0 40 Burnet Muni Airport 51 70 42 70 49 / 10 0 0 0 40 Del Rio Intl Airport 53 76 47 77 50 / 0 0 0 0 30 Georgetown Muni Airport 53 71 43 70 50 / 30 0 0 0 40 Hondo Muni Airport 54 76 45 76 50 / 10 0 0 0 40 San Marcos Muni Airport 55 73 44 72 50 / 50 0 0 0 40 La Grange - Fayette Regional 58 73 46 72 51 / 60 20 0 0 30 San Antonio Intl Airport 56 75 47 73 52 / 30 0 0 0 40 Stinson Muni Airport 57 76 48 74 53 / 40 0 0 0 40

EWX WATCHES/WARNINGS/ADVISORIES. None.

Short-Term/Aviation . Oaks Long-Term . 04


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown, Georgetown Municipal Airport, TX5 mi62 minS 55.00 miFog/Mist58°F57°F97%1017.1 hPa
Austin Executive Airport, TX19 mi63 minN 04.00 miLight Rain57°F57°F100%1017.6 hPa
Lago Vista TX, Rusty Allen Airport, TX23 mi63 minS 31.00 miDrizzle57°F56°F99%1017.3 hPa

Link to 5 minute data for KGTU

Wind History from GTU (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmSE3SE6S13
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1 day agoCalmNW6NW8NW7CalmSW4CalmW5NW5NW5NW56N5SE4CalmN5E3E4SE4SE3CalmCalmCalmCalm
2 days agoCalmCalmCalmN3CalmW6W10NW9NW11
G17
NW9N13NW11N12N10N11N7NE7N7NE4NE3CalmCalmW4Calm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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 (0,6,7,8)
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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 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.