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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 - Nan Xian Distância
Jingzhou 47.4 km
Changsha Aeroporto 71.1 km
Yueyang 76.1 km
Zhongxiang 78.8 km
Changde 80.9 km
Nanyue 94.3 km
Zaoyang 122.4 km
Yichang 134.3 km
Shaoyang 136.6 km
Laohekou 150.1 km
Lingling 157.1 km
Nanyang 157.4 km
Chenzhou 168.7 km
Wuhan 200.6 km
Fang Xian 212.1 km
Xinyang 220.2 km
Wugang 224.1 km
Yuanling 225.6 km
Yichun 231.4 km
Zhumadian 240.3 km
Xiushui 243.5 km
Sangzhi 248.6 km
Guilin 285.1 km
Macheng 297.0 km
Ji'an 302.9 km
Xihua 306.2 km
Zhijiang 311.9 km
Tongdao 318.1 km
Ganzhou 324.4 km
Enshi 328.6 km
Fengjie 329.7 km
Gushi 385.1 km
Nanchang 393.0 km
Ankang 397.2 km
Lushan 399.0 km
Fuyang 403.5 km
Youyang 405.0 km
Sansui 425.9 km
Bozhou 427.0 km
Huoshan 447.6 km
Rongjiang 450.1 km
Guangchang 452.8 km
Sinan 465.2 km
Changting 470.0 km
Nancheng 480.2 km
Wanyuan 496.9 km

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