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What are the sources for WeatherOnline forecasts?


The WeatherOnline forecasts are created by using a MOS system developed in-house with the most current US weather services model data (GFS). The statistical methods of the Model-Output-Statistic (MOS)-System were developed in cooperation with the Meteorological Department of the University of Bonn.

What is a MOS-System?


A Model-Output-Statistic (MOS)-System combines the data of the weather forecast model and the locally recorded data for any given point by transforming the model data from a coarse grid to detailed small scale areas.
In order to do so, one needs a large volume of past model forecast data as well as the corresponding recorded data for any given location. The MOS-System relates these two sets of data in an optimized fashion allowing development of the local weather forecast by using the most current model forecast.

What are the time intervals used in the temperature and icons of the local forecasts?


The forecasted maximum temperature always refers to a 12hour window from 6am to 6om local time.
The forecasted minimum temperature always refers to the 12hour window from 6pm of the day before the forecast day to 6 am of the forecast day.
The weather icon for the morning refers to the time between 6am and 12pm local time, the icon for the afternoon is valid from 12am to 6pm local time and the evening icon refers to the time from 6pm to 12am local time.

How often are the current weather conditions and forecasts updated?


The current weather information as well as the satellite images are updated every 30 minutes whereas the radar images are being updated every 15 minutes.
The local weather forecasts as well as the weather charts are updated 8 times a day. The updates start at 2 am CEST or 3 am CEST depending on daylight saving time and continue on a three hourly bases.


Estaciones meteorológicas cercanas - San Marcos Distancia
San Marcos Regional aeropuerto 7.4 km
Lago Vista Aeropuerto 10.6 km
New Braunfels Aeropuerto 12.7 km
Killeen- Fort Hood Regional aeropuerto 21.7 km
Austin-Bergstrom aeropuerto 26.9 km
Beeville Aeropuerto 27.3 km
Gatesville Municipal aeropuerto 28.3 km
Georgetown Municipal aeropuerto 30.5 km
Killeen 31.1 km
Naval Auxiliary Landing Field Orange Grove 32.7 km
Skylark Field 33.5 km
Lampasas Aeropuerto 35.3 km
Burnet Municipal aeropuerto 36.1 km
Hamilton Municipal aeropuerto 37.1 km
Naval Air Station Kingsville aeropuerto 38.3 km
Base de la Fuerza Aérea Randolph 39.3 km
Alice aeropuerto 40.8 km
Granbury Aeropuerto 41.6 km
Austin Executive aeropuerto 42.1 km
Stephenville Aeropuerto 45.8 km
Falfurrias Aeropuerto 46.1 km
Mineral Wells aeropuerto 46.1 km
Bridgeport Municipal aeropuerto 52.1 km
Gonzáles Aeropuerto 52.4 km
South Texas International Airport at Edinburg 57.3 km
Corpus Christi aeropuerto 57.4 km
San Antonio aeropuerto 59.6 km
Bowie Aeropuerto 59.8 km
Stinson Municipal aeropuerto 59.9 km
Draughon- Miller Central Texas Regional aeropuerto 61.6 km
Valley aeropuerto 63.0 km
Decatur Municipal aeropuerto 64.5 km
Pleasanton Aeropuerto 66.7 km
McAllen-Miller aeropuerto 66.8 km
Cleburne Aeropuerto 66.9 km
Lucio Blanco aeropuerto 68.5 km
Naval Air Station Joint Reserve Base Fort Worth 69.1 km
Base de la Fuerza Aérea Lackland 72.7 km
Mc Gregor 72.8 km
Heroica Matamoros Aeropuerto 75.6 km
Fort Worth Meacham aeropuerto 76.9 km
Naval Air Station Corpus Christi 79.1 km
Comanche Aeropuerto 81.1 km
Fort Worth Spinks aeropuerto 81.1 km
Brownsville/South Padre aeropuerto 82.0 km
Llano Municipal aeropuerto 82.5 km
Perot Field Fort Worth Alliance aeropuerto 82.8 km
Waco Regional aeropuerto 83.9 km
Boerne Stage Field 84.8 km
Port Isabel aeropuerto 86.1 km
Graham Aeropuerto 86.6 km
Kickapoo Downtown aeropuerto 88.9 km
Wichita Falls Regional aeropuerto 89.6 km
Denton Enterprise aeropuerto 95.2 km
Hebbronville Aeropuerto 98.1 km
Port Aransas Aeropuerto 98.6 km
Hillsboro Municipal aeropuerto 98.7 km
Gainesville Municipal aeropuerto 99.1 km
TSTC Waco aeropuerto 99.5 km
Arlington Aeropuerto 101.4 km
Aransas 101.6 km
Castroville Aeropuerto 102.3 km
Giddings Aeropuerto 106.4 km
Grand Prairie Municipal aeropuerto 107.0 km
Cameron Aeropuerto 108.1 km
Fredericksburg 108.8 km
La Grange 109.5 km
Dallas-Fort Worth aeropuerto 109.5 km
Victoria Regional aeropuerto 114.1 km
Breckenridge Aeropuerto 116.4 km
Brownwood Regional aeropuerto 117.6 km
Midlothian Aeropuerto 119.6 km
Dallas Executive aeropuerto 125.5 km
Dallas Love aeropuerto 128.0 km
Kerrville Municipal aeropuerto 128.0 km
Addison Aeropuerto 130.0 km
Caldwell Aeropuerto 137.2 km
South Texas Regional Airport at Hondo 137.5 km
Calhoun County aeropuerto 140.3 km
Lancaster Regional aeropuerto 140.6 km
Cotulla 144.7 km
Hearne Municipal aeropuerto 146.7 km
North Texas Regional aeropuerto 150.4 km
Zapata Aeropuerto 154.0 km
Curtis Field 156.4 km
McKinney National aeropuerto 157.4 km
Robert R Wells Jr 157.8 km
Mexia Limestone County Airport 159.9 km
Mesquite Metro aeropuerto 161.3 km
Coleman Aeropuerto 167.3 km
Rockwall Aeropuerto 172.2 km
C. David Campbell Field 173.4 km
Brenham 174.5 km
Laredo aeropuerto 175.0 km
Easterwood aeropuerto 175.0 km
Coulter Field aeropuerto 178.7 km
Eagle Lake Aeropuerto 179.4 km
Durant Regional aeropuerto 179.8 km
Quetzalcóatl aeropuerto 186.7 km
Palacios Municipal aeropuerto 188.0 km

Estado actual