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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.


Stations météo à proximité - Heidelberg Distance
Heidelberg 0.0 km
Rand (Aéroport) 36.0 km
Johannesburg/Jan Smuts (Aéroport) 39.4 km
Johannesbourg 54.4 km
Pretoria/Irene (Aéroport) 61.1 km
Waterkloof 69.0 km
Air Force Base Waterkloof 69.2 km
Frankfort Aéroport 74.9 km
Johannesbourg-Lanséria (Aéroport) 75.0 km
Witbank 112.7 km
Vrede 126.2 km
Potchefstroom Agric 146.3 km
Rustenburg 152.3 km
Warmbaths/Towoomba 158.4 km
Kroonstad 167.4 km
Kroonstad 168.1 km
Oudestad 168.8 km
Bethlehem (Aéroport) 169.9 km
Pilanesberg 178.7 km
Ermelo 180.0 km
Klerksdorp 186.8 km
Carolina Aéroport 199.7 km
Belfast 202.2 km
Van Reenen 212.9 km
Royal Natal Nat. Park 221.4 km
Goedehoop 227.1 km
Ficksburg 231.7 km
Ficksburg 232.8 km
Potgietersrus 237.0 km
Lichtenburg 247.8 km
Ladysmith 253.1 km
Ottosdal 263.3 km
Lydenburg 271.5 km
Marken 285.7 km
Polokwane Aéroport 286.4 km
Polokwane/Pietersburg (Aéroport) 287.3 km
Lephalale 288.1 km
Estcourt 294.6 km
Giant's Castle 296.9 km
Vryheid 297.3 km
Mbombela Aéroport 300.1 km
Maseru-Mia 302.4 km
Nhlangano Aéroport 308.6 km
Graskop 316.1 km
Mooi River 318.7 km
Mmabatho Int. (Aéroport) 323.7 km
Piggs Peak Met Stn. 325.4 km
Bloemhof 326.1 km
Matsapha (Aéroport) 326.5 km
Tzaneen-Grenshoek 327.4 km
Tzaneen 327.6 km
Glen College 330.3 km
Gaborone (Aéroport) 335.2 km
Shaleburn 337.2 km
Moti 341.0 km
Bloemfontein Aéroport 343.8 km
Good Hope 345.0 km
Nyonyane 345.4 km
Jericho 347.6 km
Wepener 350.0 km
Greytown 351.6 km
Bloemfontein 353.9 km
Mara 354.0 km
Mayiwane 354.2 km
Cedara 362.2 km
Base aérienne Hoedspruit 362.4 km
Hoedspruit 362.4 km
Babanango 364.1 km
Hoedspruit 364.8 km
Pongola 370.2 km
Pietermaritzburg 377.6 km
Pietermaritzburg Aéroport 378.9 km
Mahalapye 381.0 km
Ulundi 382.8 km
Skukuza Aéroport 389.1 km
Vuvulane 394.0 km
Levubu 395.6 km
Big Bend Met Stn. 396.7 km
Phalaborwa 398.1 km
Siteki 399.0 km
Ixopo 400.5 km
Ndzevane 401.7 km
Thohoyandou 403.0 km
Komatipoort 404.9 km
Kokstad 405.0 km
Taung 413.7 km
Taung 413.7 km
Lephephe 419.7 km
Mandeni 422.6 km
Aéroport international King Shaka 428.2 km
Mount Edgecombe 428.9 km
Makatini 433.0 km
Virginia (Aéroport) 434.4 km
Mtunzini 438.9 km
Selebi-Phikwe Aéroport 441.9 km
Barkly East 442.5 km
Aliwal North Aéroport 453.5 km
Jwaneng (Aéroport) 454.0 km
Sezela 455.0 km
Kimberley Aéroport 460.7 km