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Asia



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.


Nearby Weather Stations - Tunchang Distance
Haikou 37.9 km
Qionghai 41.1 km
Haikou Airport 45.6 km
Shan Xian 57.8 km
Sanya 77.7 km
Zhanjiang 78.7 km
Sanya Phoenix Intl. Airport 86.4 km
Beihai 136.5 km
Xinyi 148.8 km
Guiping 154.2 km
Dongfang 165.4 km
Qinzhou 190.6 km
Sanhu Dao 202.7 km
Wuzhou 209.9 km
Quảng Ngãi 214.6 km
Yangjiang 230.5 km
Nanning 241.2 km
Da Nang Intl. Airport 244.0 km
Nanning/Wuxu AP 244.0 km
Móng Cái 249.9 km
Bạch Long Vĩ 266.7 km
Xisha Dao 268.7 km
Huế 299.3 km
Gaoyao 302.5 km
Shangchuandao 312.0 km
Lạng SƠn 381.0 km
Longzhou 387.5 km
Phu Lien 389.1 km
Guangzhou Airport 392.8 km
Đồng Hới 395.1 km
Taipa Airport 402.8 km
Sekong 405.7 km
Baise 420.5 km
Fogang 424.9 km
Salavan 427.7 km
Shenzhen Bao'an Intl. Airport 433.6 km
Nam Định 441.2 km
Hong Kong 442.2 km
Cao Bằng 443.5 km
Lau Fau Shan 451.1 km
Cheung Chau 451.7 km
Shenzhen 464.7 km
Ta Kwu Ling 469.8 km
Sha Tin 473.7 km
Heyuan 542.5 km

Current weather