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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 - Heyang Distance
Huayin 29.7 km
Yan'an 88.9 km
Yuncheng 96.8 km
Lushi 108.7 km
Yulin 124.3 km
Jinghe 135.1 km
Lishi 138.1 km
Croc Xian 142.2 km
Ankang 155.8 km
Xianyang 162.5 km
Xian de Fengjie 173.7 km
Dongsheng 176.6 km
Xian de Hequ 197.3 km
Laohekou 203.2 km
Jiexiu 211.4 km
Xian de Yangcheng 250.7 km
Xian de Mengjin 254.7 km
Wanyuan 262.2 km
Bannière d'Otog 279.1 km
Xifengzhen 280.7 km
Nanyang 285.1 km
Taiyuan 286.4 km
Taiyuan Aéroport 294.7 km
Zaoyang 306.8 km
Xian de Fengxiang 309.0 km
Zhongxiang 315.4 km
Yuanping 317.7 km
Yanchi 319.4 km
Xian de Yushe 324.2 km
Dachuan 328.5 km
Hanzhong 355.3 km
Pingliang 387.9 km
Zhengzhou 390.2 km
Mont Wutai 405.0 km
Zhumadian 440.4 km
Yinchuan 452.0 km
Xinyang 453.0 km
Anyang 470.9 km
Shijiazhuang 489.3 km
Xihua 489.9 km
Xingtai 490.4 km
Wei Xian 528.5 km

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