Wereld

Afrika



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.


Weerstations in de buurt - Keimoes Afstand
Upington Luchthaven 44.5 km
Augrabies Falls 70.0 km
Pofadder 182.0 km
Brandvlei 191.6 km
Van Wyksvlei 195.5 km
Prieska 220.6 km
Van Zylsrus 223.5 km
Twee Riviere 235.7 km
Postmasburg 236.8 km
Kathu 250.2 km
Porterville 260.6 km
Kuruman 305.5 km
Calvinia Luchthaven 318.1 km
Tshabong Luchthaven 320.0 km
Fraserburg Luchthaven 339.3 km
Nieuwoudtville 346.6 km
Springbok Luchthaven 356.1 km
Vioolsdrift 374.8 km
Sutherland 384.7 km
Keetmanshoop Luchthaven 390.3 km
De Aar 392.7 km
Vredendal Luchthaven 414.7 km
Beaufort-Wes 416.5 km
Kimberley Luchthaven 423.1 km
Clanwilliam 431.2 km
Werda 435.8 km
Taung 439.1 km
Taung 439.2 km
Koingnaas 439.3 km
Lambertsbaai 456.1 km
Port Nolloth 459.9 km
Excelsior Ceres 477.0 km
Alexanderbaai 493.7 km
Tshane Luchthaven 495.9 km
Noupoort 511.2 km
Graaff-Reinet 536.8 km
Langebaanweg Vliegveld 545.3 km
Hardap 552.5 km
Cape Columbine 555.5 km
Jwaneng Airport 588.7 km

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