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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.


Estaciones meteorológicas cercanas - Osan Distancia
Pyeongtaek 8.9 km
Suwon 12.5 km
Cheonan 24.2 km
Seoul Air Base 24.9 km
Seúl 32.1 km
Gimpo aeropuerto 39.7 km
Icheon 51.3 km
Incheon 51.4 km
Dongducheon 53.8 km
Cheongju 56.0 km
Cheongju Aeropuerto 58.5 km
Munsan 60.2 km
Seosan 66.9 km
Daejeon 67.6 km
Incheon IAP 69.4 km
Boryeong 74.2 km
Cheorwon-gun 76.6 km
Kaesong 77.7 km
Gunsan 79.3 km
Jeonju 87.1 km
Kunsan aeropuerto 91.6 km
Pyonggang 92.3 km
Chuncheon 94.8 km
Wonju 103.3 km
Jeongeup 105.4 km
Singye 108.7 km
Gochang 117.8 km
Namwon 119.1 km
Chupungnyeong 123.1 km
Gwangju 130.5 km
Sangju 133.1 km
Chinhae 136.8 km
Suncheon 138.4 km
Yangdok 140.0 km
Wŏnsan 147.2 km
Gumi 157.7 km
Muan Aeropuerto 157.9 km
Yeongwol 159.7 km
Haeju 160.7 km
Sariwon 169.2 km
Changjon 169.4 km
Mokpo 170.3 km
Jinju 176.6 km
Yeosu 177.9 km
Wando 184.1 km
Sokcho 187.9 km
Pionyang 188.9 km
Andong 190.9 km
Jindo Radar 191.7 km
Yangyang aeropuerto 193.6 km
Daegu 194.8 km
Daegwallyeong 197.0 km
Taegu US-AFB 197.7 km
Hamhung 199.5 km
Chuncheon 207.8 km
Gangneung 212.5 km
Namp'o 213.8 km
Masan 215.0 km
Tongyeong 218.6 km
Changjin 220.9 km
Huichon 221.6 km
Anju-si 226.4 km
Donghae Radar 235.4 km
Sinpo 236.8 km
Heuksando 237.4 km
Jeju 245.2 km
Jeju aeropuerto 245.9 km
Gimhae Aeropuerto 248.9 km
Seongsan 249.1 km
Ryongyon 249.9 km
Busan 261.5 km
Seogwipo 261.9 km
Kanggye 262.4 km
Uljin 265.4 km
Gosan 271.0 km
Pohang 271.7 km
Baengnyeong 273.1 km
Kusong 274.3 km
Ulsan 275.6 km
Pungsan 281.3 km
Ji'an 283.0 km
Linjiang 309.3 km
Chunggang 313.8 km
Changbai 315.0 km
Hyesan 318.1 km
Supung 320.3 km
Tsushima aeropuerto 320.8 km
Tsushima 321.6 km
Kimch'aek 343.8 km
Kuandian 344.1 km
Samjiyon 351.2 km
Sinuiju 353.5 km
Dandong 357.5 km
Hirado 381.2 km
Sasebo 405.9 km
Ulleungdo 431.3 km
Fukuoka Aeropuerto 446.0 km
Ch'ŏngjin 448.1 km
Saga 450.8 km