Marine Weather and Tides
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 7:18AM||Sunset 5:33PM||Sunday December 15, 2019 4:16 AM CST (10:16 UTC)||Moonrise 9:14PM||Moonset 10:27AM||Illumination 86%|
7 Day Forecast for Marine Location Near Sunset Valley, TXHourly EDIT Help
Area Discussion for - Austin/San Antonio, TX  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS64 KEWX 150936 AFDEWX
Area Forecast Discussion National Weather Service Austin/San Antonio TX 336 AM CST Sun Dec 15 2019
SHORT TERM (Today through Monday). Surface analysis early this morning shows a nearly stationary frontal boundary draped along a Lubbock-Austin-Galveston line. Modest moisture return in the vicinity of this boundary is resulting in the development of low stratus and patchy fog across the Coastal Plains as of 3 AM. With VAD wind profilers from KEWX, KGRK, and KHGX all showing a stout 40 knot southwesterly low level jet overriding this boundary, expect it to lift north as a warm front through the remainder of the morning hours. As warmer, more moist air spreads into Central Texas with the boundary, expect to see at least some fog and possibly lower clouds make a run for the Interstate 35 corridor after sunrise. Daytime heating will result in stratus and fog mixing out by late morning.
Above the surface, zonal mid-level flow across the southern states will transition to more of a southwest flow aloft today as a shortwave trough approaches from the West Coast. Height falls ahead of this disturbance are expected to result in the development of a surface low along the warm front as it nears the Red River today, which will drag the frontal boundary south towards the region as a cold front tonight and dislodge colder air across the Great Plains as it does. Ahead of this frontal boundary, veering/downsloping low- level winds across the Edwards Plateau, Hill Country, and Central Texas will allow for another very warm afternoon with many locations nearing or setting new record high temperatures today. A listing of record high temperatures is appended in the Climate section below with much of the region again climbing into the 80s to near 90 again today.
These warmer temperatures will be short-lived, however, as the front moves into South Central Texas by sunrise Monday and clears the region by noon with thin bands of light rain showers developing along the front as it moves south. Fog and patchy drizzle or light rain may also develop along and east of the Interstate 35 corridor ahead of the front's arrival early Monday morning, but will lift as the front sweeps south through the remainder of the morning hours. Cold air advection with breezy north winds behind the front will result in highs 20-25 degrees cooler than today in the Hill Country and Central Texas. Expect morning temperatures to range from the mid 40s north to low 60s south, reaching the mid 50s to mid 70s during the afternoon.
LONG TERM (Monday Night through Saturday). Colder, drier, and clear conditions settle into the region Monday night. Lows in the 30s and low 40s will only rise into the 50s during the afternoon Tuesday. Breezy northerly winds behind the front Monday night will gradually diminish during the day Tuesday as surface ridging builds into the region. This will allow for excellent conditions for radiational cooling Tuesday night and Wednesday morning with all of South Central Texas expected to see temperatures at or below freezing Wednesday and again Thursday morning.
A brief period of shortwave ridging on Thursday is replaced by a quickly moving wave from the Pacific on Friday. As a result, highs in the mid 50s on Wednesday will moderate into the mid 50s to mid 60s by Thursday afternoon with dry conditions persisting. Weak moisture return ahead of the Friday trough may allow for a few showers to develop across the Coastal Plains on Friday, but precipitable water values barely exceeding one inch and drier air behind a cold front associated with this wave indicates any window for this would be brief. Ridging returns next weekend behind Friday's system with dry and mild conditions resuming.
CLIMATE. Near record to record high temperatures are forecast across South Central Texas today. A listing of records for the region's official climate sites for December 15 is provided below.
LOCATION RECORD HIGH (YEAR) Austin Bergstrom 81 (1995) Austin Camp Mabry 82 (1924) San Antonio 85 (1950) Del Rio 84 (1950)
PRELIMINARY POINT TEMPS/POPS. Austin Camp Mabry 82 54 61 35 53 / - 20 20 0 0 Austin Bergstrom Intl Airport 82 54 63 35 54 / - 20 20 0 0 New Braunfels Muni Airport 83 56 67 35 54 / - 20 20 0 0 Burnet Muni Airport 84 46 58 32 51 / 0 10 - 0 0 Del Rio Intl Airport 88 52 72 38 56 / 0 0 0 0 0 Georgetown Muni Airport 83 50 57 34 52 / 0 20 20 0 0 Hondo Muni Airport 84 52 74 35 58 / 0 - - 0 0 San Marcos Muni Airport 82 56 66 35 54 / - 20 20 0 0 La Grange - Fayette Regional 82 62 67 37 53 / 10 30 30 0 0 San Antonio Intl Airport 82 58 68 38 54 / - 10 10 0 0 Stinson Muni Airport 83 59 72 38 55 / - 10 10 0 0
EWX WATCHES/WARNINGS/ADVISORIES. None.
Aviation . Treadway Short-Term/Long-Term . Huffman
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Austin-Bergstrom International Airport, TX||7 mi||24 min||N 0||5.00 mi||Fog/Mist||42°F||39°F||92%||1007.2 hPa|
|Austin City, Austin Camp Mabry, TX||8 mi||26 min||N 0||7.00 mi||Fair||51°F||46°F||86%||1006.9 hPa|
|Austin Executive Airport, TX||18 mi||22 min||SSW 5||2.00 mi||Fog/Mist||50°F||50°F||100%||1007.4 hPa|
|San Marcos, San Marcos Municipal Airport, TX||22 mi||21 min||N 0||10.00 mi||Fair||44°F||42°F||93%||1007.3 hPa|
|Lago Vista TX, Rusty Allen Airport, TX||22 mi||22 min||S 5||10.00 mi||Fair||57°F||46°F||67%||1007.4 hPa|
Link to 5 minute data for KAUS
Wind History from AUS (wind in knots)
|1 day ago||Calm||Calm||Calm||Calm||S||SW||W||SW||W|
|2 days ago||Calm||W||Calm||Calm||Calm||Calm||Calm||S||S||S||S||S||S||Calm||Calm||Calm||S||W||Calm||SW||S||S||Calm||Calm|
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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 (5,6,7,8)(on/off)  Help
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