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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 - Milnerton Distancia
Air Force Base Ysterplaat 3.5 km
Bahía de la Mesa 8.2 km
Molteno Reservior 12.4 km
Ciudad del Cabo aeropuerto 15.3 km
Isla Robben 16.4 km
Slangkop 36.2 km
Malmesbury 48.6 km
Strand 49.1 km
Cabo Point 51.0 km
Paarl 54.3 km
Vyeboom 74.9 km
Geelbek 82.4 km
Langebaan 98.8 km
Hermanus 99.6 km
Langebaanweg aeropuerto 102.1 km
Worcester 110.8 km
Worcester 110.8 km
Cape Columbine 131.1 km
Excelsior Ceres 140.7 km
Robertson 156.0 km
Riviersonderend 158.9 km
Clanwilliam 183.4 km
Lambert's Bay 194.5 km
Cabo de las Agujas 197.0 km
Struisbaai 200.1 km
Vredendal aeropuerto 232.2 km
Laingsburg 272.6 km
Nieuwoudtville 273.8 km
Sutherland 287.0 km
Calvinia aeropuerto 289.1 km
Riversdale 307.0 km
Ladismith 311.4 km
Stilbaai 325.2 km
Fraserburg aeropuerto 392.9 km
Prince Albert 397.9 km
Mosselbaai Aeropuerto 407.7 km
Porterville 409.7 km
Koingnaas 411.4 km
Brandvlei 419.6 km
George aeropuerto 432.6 km
Springbok Aeropuerto 449.1 km
Beaufort West 477.8 km
Pofadder 508.0 km
Vanwyksvlei 520.9 km
Port Nolloth 523.9 km
Prieska 643.0 km