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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 - Vanwyksvlei Distancia
Vanwyksvlei 0.0 km
Prieska 124.0 km
Brandvlei 148.9 km
Fraserburg aeropuerto 165.5 km
Upington Aeropuerto 209.3 km
Beaufort West 221.7 km
Cataratas Augrabies 244.5 km
De Aar 245.0 km
Sutherland 246.8 km
Postmasburg 249.8 km
Calvinia aeropuerto 256.1 km
Prince Albert 293.5 km
Pofadder 299.1 km
Kathu 306.0 km
Laingsburg 313.9 km
Porterville 318.1 km
Nieuwoudtville 320.8 km
Ladismith 331.7 km
Kuruman 350.4 km
Willowmore 354.8 km
Graaff-Reinet 358.3 km
Van Zylsrus 358.9 km
Noupoort 359.0 km
Kimberley Aeropuerto 364.6 km
Clanwilliam 377.6 km
Excelsior Ceres 380.3 km
George aeropuerto 383.4 km
Riversdale 391.7 km
Vredendal aeropuerto 394.0 km
Fauresmith 394.1 km
Mosselbaai Aeropuerto 397.4 km
Knysna 405.9 km
Gariep Dam 414.2 km
Robertson 417.5 km
Stilbaai 418.5 km
Plettenberg Bay 420.0 km
Joubertina 424.0 km
Twee Riviere 424.5 km
Lambert's Bay 425.8 km
Worcester 429.2 km
Worcester 429.2 km
Taung 435.6 km
Taung 435.7 km
Springbok Aeropuerto 441.8 km
Tsitsikamma National Park 443.3 km
Riviersonderend 448.9 km
Tsabong Aeropuerto 449.0 km
Cradock 461.7 km
Paarl 473.3 km
Malmesbury 474.3 km
Patensie 483.2 km
Vyeboom 486.8 km
Langebaanweg aeropuerto 489.9 km
Vioolsdrif 500.2 km
Struisbaai 502.0 km
Bloemhof 504.6 km
Koingnaas 504.9 km
Cabo de las Agujas 507.4 km
Geelbek 508.4 km
Langebaan 510.6 km
Cape Columbine 512.4 km
Somerset East 514.1 km
Hermanus 514.7 km
Strand 516.1 km
St Francis Bay 517.3 km
Ciudad del Cabo aeropuerto 520.5 km
Air Force Base Ysterplaat 523.3 km
Isla Robben 526.8 km
Uitenhage 528.0 km
Bahía de la Mesa 528.7 km
Molteno Reservior 533.2 km
Parque nacional de los Elefantes de Addo 539.2 km
Port of Ngqura 554.8 km
Slangkop 556.4 km
Cabo Point 557.6 km
Puerto Elizabeth Aeropuerto 562.1 km
Keetmanshoop Aeropuerto 573.6 km