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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.


Estações Meteorológicas Próximas - Malmesbury Distância
Malmesbury 0.0 km
Paarl 38.3 km
Air Force Base Ysterplaat 51.7 km
Ilha Robben 52.5 km
Aeroporto Internacional da Cidade do Cabo 54.3 km
Baía da Mesa 55.5 km
Molteno Reservior 60.2 km
Geelbek 72.5 km
Strand 73.5 km
Vyeboom 78.1 km
Langebaanweg Airport 80.8 km
Slangkop 84.8 km
Worcester 85.0 km
Worcester 85.0 km
Langebaan 87.8 km
Excelsior Ceres 95.5 km
Cape Point 96.3 km
Hermanus 116.0 km
Cape Columbine 117.4 km
Robertson 136.3 km
Clanwilliam 137.3 km
Riviersonderend 150.2 km
Lambert's Bay 157.2 km
Vredendal Airport 191.4 km
Cabo das Agulhas 203.8 km
Struisbaai 205.4 km
Nieuwoudtville 227.3 km
Calvinia Airport 240.5 km
Laingsburg 241.0 km
Sutherland 245.0 km
Ladismith 284.9 km
Riversdale 289.3 km
Stilbaai 311.4 km
Fraserburg Airport 351.3 km
Porterville 365.0 km
Prince Albert 368.5 km
Brandvlei 371.0 km
Koingnaas 380.9 km
Mossel Bay Aeroporto 389.4 km
Springbok Airport 411.8 km
George Airport 412.2 km
Beaufort West 442.3 km
Pofadder 462.0 km
Vanwyksvlei 474.3 km
Port Nolloth 493.7 km
Prieska 597.0 km