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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 - Chichibu Distância
Chichibu 0.0 km
Maebashi 35.1 km
Base aérea de Yokota 35.6 km
Kumagaya 36.2 km
Aeródromo de Tachikawa 42.4 km
Zama Aeroporto 52.6 km
Zama Aeroporto 52.6 km
Kawaguchiko 53.7 km
Chōfu Airport 56.1 km
Fuji 61.0 km
Kōfu 65.0 km
Fuji Mountain 65.7 km
Karuizawa 66.2 km
Mishima 74.7 km
Yokohama 78.3 km
Nikkō 78.5 km
Ajiro 78.5 km
Tóquio 80.2 km
Aeroporto Internacional de Tóquio 86.1 km
Tokyo Heliport 89.0 km
Utsunomiya 99.5 km
Shimofusa Airport 104.6 km
Oshima Airport 105.9 km
Suwa 107.8 km
Oshima 108.6 km
Nagano 113.7 km
Shizuoka 114.1 km
Chiba 117.7 km
Tateyama 118.5 km
Irozaki 119.0 km
Tateyama 121.5 km
Matsumoto 126.3 km
Matsumoto Airport 130.1 km
Shizuhama Air Base 131.2 km
Takada 131.6 km
Shimada Aeroporto 140.5 km
Iida 144.5 km
Tokio New Intl. Airport 145.9 km
Ibaraki Airport 149.2 km
Omaezaki 150.6 km
Katsuura 154.4 km
Wakamatsu 157.2 km
Mito 157.7 km
Shirakawa 159.5 km
Niigata 162.6 km
Miyakejima Island 164.4 km
Niigata Aeroporto 166.0 km
Hamamatsu 185.9 km
Aikawa 195.1 km
Choshi 199.7 km
Takayama 204.6 km
Fukushima 215.1 km
Toyama 217.9 km
Toyama Aeroporto 218.1 km
Onahama 218.4 km
Fushiki 235.4 km
Yamagata 238.6 km
Nagoia 245.1 km
Irako 248.3 km
Yamagata Aeroporto 251.2 km
Gifu Air Field 251.2 km
Shōnai 251.7 km
Hachijo-jima 254.6 km
Noto Airport 259.8 km
Sakata 261.1 km
Gifu 262.4 km
Wajima 269.2 km
Aeroporto Internacional de Chūbu Centrair 270.1 km
Shinjo 272.1 km
Aeroporto de Sendai 275.7 km
Kanazawa 277.2 km
Sendai 280.7 km
Yokkaichi 291.5 km
Akeno Air Field 293.9 km
Komatsu Aeroporto 299.8 km
Tsu 303.7 km
Fukui 317.3 km
Hikone 320.9 km
Ishinomaki 323.7 km
Akita Aeroporto 333.0 km
Akita 336.0 km
Tsuruga 336.9 km
Ueno 341.5 km
Owase 357.6 km
Hanamaki Airport 372.5 km
Nara 377.2 km
Quioto 381.2 km
Morioka 393.0 km
Ofunato 394.8 km
Yao Aeroporto 404.0 km
Osaka 411.0 km
Aeroporto Internacional de Osaka 416.2 km
Maizuru 421.6 km
Shionomisaki Lighthouse 423.6 km
Kobe 443.0 km
Kobe Aeroporto 443.5 km
Kansai Intl. Airport 445.5 km
Miyako 449.7 km
Nanki 455.3 km
Wakayama 458.7 km