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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 - Butterworth Distancia
King Phalo Airport 77.3 km
Döhne 78.2 km
Mthatha 97.2 km
Elliot 103.8 km
Bhisho 111.5 km
Coffee Bay 115.7 km
Queenstown 146.9 km
Queenstown 149.1 km
Barkly East 150.8 km
Port St. Johns 170.1 km
Fort Beaufort 174.6 km
Port Alfred Airport 186.0 km
Jamestown 192.4 km
Makhanda 206.3 km
Aliwal North Airport 206.9 km
Kokstad 226.3 km
Port Edward 262.6 km
Somerset East 279.8 km
Paddock 281.4 km
Shaleburn 282.3 km
Cradock 282.5 km
Margate 282.5 km
Wepener 285.0 km
Addo Elephant National Park 289.1 km
Maseru-Mia 291.5 km
Ixopo 301.0 km
Port of Ngqura 312.4 km
Gqeberha Airport 326.1 km
Uitenhage 331.5 km
Giant's Castle 335.5 km
Sezela 337.1 km
Gariep Dam 341.8 km
Ficksburg 344.9 km
Ficksburg 346.7 km
Cedara 361.1 km
Pietermaritzburg Airport 361.4 km
Pietermaritzburg 362.6 km
Mooi River 367.1 km
Royal Natal Nat. Park 367.8 km
Noupoort 374.2 km
Estcourt 377.5 km
Bloemfontein Airport 380.6 km
Bloemfontein 386.5 km
Glen College 391.2 km
Patensie 397.6 km
Bethlehem Airport 400.9 km
Graaff-Reinet 401.0 km
Fauresmith 405.7 km
Virginia Airport 407.8 km
Ladysmith 408.6 km
Van Reenen 410.7 km
Mount Edgecombe 411.3 km
St Francis Bay 413.4 km
Greytown 416.8 km
King Shaka Intl. Airport 422.6 km
Mandeni 474.8 km
De Aar 491.7 km
Mtunzini 512.5 km
Babanango 513.4 km
Kimberley Airport 515.5 km
Ulundi 529.4 km
Richards Bay Airport 558.7 km
Charters Creek 619.1 km

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