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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.


附近气象站 - 赫爾馬努斯 Distance
赫爾馬努斯 0.0 km
Vyeboom 41.0 km
Strand 50.5 km
Cape Point 80.3 km
帕阿爾 80.4 km
Riviersonderend 82.0 km
开普敦国际机场 84.4 km
伍斯特 90.2 km
伍斯特 90.2 km
Air Force Base Ysterplaat 97.6 km
厄加勒斯角 98.4 km
羅伯特森 101.0 km
Struisbaai 102.1 km
桌灣 103.7 km
Molteno Reservior 103.8 km
Slangkop 104.5 km
羅本島 115.8 km
馬姆斯伯里 116.0 km
Excelsior Ceres 156.3 km
Geelbek 178.6 km
Langebaanweg Airport 193.9 km
兰格班 195.3 km
蘭斯堡 224.4 km
Cape Columbine 227.3 km
里弗斯代爾 229.3 km
克蘭威廉 240.2 km
Stilbaai 241.3 km
萊迪史密斯 249.1 km
Sutherland 268.5 km
Lambert's Bay 271.4 km
弗雷登達爾 機場 302.2 km
卡爾維尼亞 機場 317.3 km
Nieuwoudtville 325.1 km
莫塞爾貝 機場 327.6 km
艾伯特親王鎮 337.8 km
喬治機場 355.2 km
Fraserburg Airport 366.8 km
西博福特 429.7 km
克尼斯納 432.3 km
Brandvlei 438.6 km
普利登堡灣 459.1 km
Porterville 465.8 km
威洛莫爾 491.5 km
Koingnaas 496.6 km
Vanwyksvlei 514.7 km
Joubertina 521.3 km
Tsitsikamma National Park 523.0 km

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