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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 - Perth Distancia
Tsabong Aeropuerto 79.9 km
Kuruman 111.6 km
Werda 119.1 km
Van Zylsrus 124.6 km
Kathu 128.4 km
Postmasburg 196.3 km
Taung 220.0 km
Taung 220.1 km
Jwaneng aeropuerto 255.5 km
Twee Riviere 274.6 km
Good Hope 277.7 km
Mmabatho aeropuerto 280.2 km
Tshane aeropuerto 280.7 km
Upington Aeropuerto 288.8 km
Kimberley Aeropuerto 306.5 km
Bloemhof 308.5 km
Ottosdal 329.0 km
Prieska 335.5 km
Lichtenburg 344.4 km
Sir Seretse Khama aeropuerto 367.7 km
Cataratas Augrabies 379.6 km
Klerksdorp 407.2 km
Fauresmith 421.3 km
Vanwyksvlei 428.5 km
Lephephe 436.2 km
Bloemfontein 440.1 km
Glen College 443.3 km
De Aar 443.9 km
Potchefstroom Agric 444.6 km
Bloemfontein Aeropuerto 449.3 km
Rustemburgo 468.4 km
Pilanesberg 474.9 km
Kroonstad 478.0 km
Kroonstad 480.6 km
Gariep Dam 498.7 km
Pofadder 499.1 km
Brandvlei 508.9 km
Mahalapye 533.2 km
Lanseria aeropuerto 541.2 km
Wepener 552.4 km
Lephalale 582.8 km
Maseru-Mia 583.4 km
Ficksburg 587.9 km
Ficksburg 590.3 km
Aliwal North aeropuerto 611.9 km
Barkly East 677.6 km
Selebi-Phikwe Aeropuerto 686.1 km