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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.


Poblíž povětrnostní stanice - Čchang-ša Vzdálenost
Čchang-ša Letiště 0.0 km
Nanyue 44.3 km
Jüe-jang 55.5 km
Čchen-čou 107.2 km
Ťing-čou 117.5 km
Čung-siang 130.4 km
Čchang-te 136.2 km
Lianzhou 157.2 km
Šao-jang 161.4 km
Lingling 162.7 km
I-čchun 169.9 km
Cao-jang 170.2 km
Šao-kuan 170.5 km
Wu-chan 176.3 km
Xiushui 194.4 km
I-čchang 202.6 km
Sin-jang 217.2 km
Laohekou 220.1 km
Ťi-an 239.1 km
Lianping 249.4 km
Kan-čou 255.6 km
Wugang 256.2 km
Ma-čcheng 269.0 km
Yuanling 274.8 km
Fang Xian 281.6 km
Sangzhi 304.3 km
Kuej-lin 309.3 km
Mengshan 309.7 km
Nan-čchang 339.9 km
Xunwu 344.2 km
Lushan 352.4 km
Tongdao 353.2 km
Zhijiang 355.8 km
Gushi 359.8 km
Fu-jang 383.0 km
Enshi 387.3 km
Guangchang 391.2 km
Fengjie 391.4 km
Meixian 404.6 km
Changting 404.9 km
Chuo-šan 412.7 km
Liou-čou 416.0 km
Nancheng 422.2 km
Youyang 457.0 km
An-kchang 462.2 km
Sansui 470.2 km
Rongjiang 490.5 km
Sinan 514.0 km
Che-čch' 553.3 km
Wanyuan 558.0 km

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