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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 - Niihama Distancia
Fukuyama 38.3 km
Kōchi 41.4 km
Kōchi Ryōma aeropuerto 53.0 km
Hiroshima aeropuerto 54.9 km
Matsuyama 56.4 km
Tadotsu 57.3 km
Matsuyama aeropuerto 65.6 km
Takamatsu aeropuerto 84.0 km
Kure 84.4 km
Okayama aeropuerto 88.0 km
Okayama 88.6 km
Takamatsu 89.9 km
Hiroshima 97.1 km
Shimizu 98.5 km
Uwajima 98.8 km
Sukumo 101.8 km
Yonago 113.5 km
Yonago 113.5 km
Muroto 113.8 km
Matsue 116.8 km
Miho-Yonago aeropuerto 117.0 km
Marine Corps Air Station Iwakuni 117.5 km
Tsuyama 118.4 km
Izumo aeropuerto 120.1 km
Sakaiminato 122.2 km
Tokushima 145.0 km
Tokushima Aeropuerto 148.3 km
Komatsushima Aeropuerto 149.6 km
Hamada 153.2 km
Tottori Aeropuerto 156.6 km
Tottori 158.5 km
Himeji 168.4 km
Saigo 171.9 km
Iwami aeropuerto 175.0 km
Oita aeropuerto 176.1 km
Sumoto 182.4 km
Hōfu Aeropuerto 193.1 km
Ōita 193.2 km
Yamaguchi 204.6 km
Tajima aeropuerto 206.5 km
Nobeoka 208.2 km
Toyooka 210.1 km
Wakayama 210.8 km
Hagi 212.6 km
Kansai aeropuerto 221.9 km
Kōbe Aeropuerto 222.4 km
Kōbe 223.0 km
Ube Aeropuerto 223.2 km
Nanki 232.7 km
Ozuki aeropuerto 248.7 km
Osaka aeropuerto 249.8 km
Maizuru 254.6 km
Osaka 255.1 km
Miyazaki aeropuerto 257.0 km
Miyazaki 257.7 km
Kitakyushu/Kokura 259.9 km
Shimonoseki 261.6 km
Yao Aeropuerto 262.8 km
Hita 265.8 km
Aburatsu 274.1 km
Shionomisaki Lighthouse 279.2 km
Kumamoto Aeropuerto 282.7 km
Kioto 285.1 km
Iizuka 288.4 km
Nara 289.6 km
Miyakonojō 295.7 km
Kumamoto 297.9 km
Hitoyoshi 310.2 km
Fukuoka Aeropuerto 324.0 km
Owase 324.8 km
Ueno 325.5 km
Kanoya 333.4 km
Saga 335.9 km
Tsuruga 337.2 km
Saga aeropuerto 337.6 km
Hikone 346.0 km
Unzendake Mount 348.2 km
Tanegashima 349.7 km
Kagoshima Aeropuerto 352.7 km
New Tanegashima aeropuerto 357.0 km
Tsu 365.2 km
Fukui 367.3 km
Akune 371.9 km
Ulleungdo 374.0 km
Yokkaichi 375.4 km
Akeno Air Field 380.0 km
Nagasaki aeropuerto 382.8 km
Ushibuka 384.2 km
Makurazaki 387.1 km
Nagasaki 390.8 km
Yakushima 394.1 km
Komatsu Aeropuerto 397.1 km
Chūbu Centrair aeropuerto 398.5 km
Sasebo 399.6 km
Gifu 404.2 km
Gifu Air Field 415.1 km
Hirado 417.9 km
Nagoya 421.1 km
Kanazawa 426.5 km
Irako 427.5 km