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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 - Ichikawa Distancia
Tokyo Heliport 11.1 km
Shimofusa aeropuerto 12.7 km
Tokio 16.9 km
Haneda aeropuerto 20.5 km
Chiba 22.7 km
Yokohama 38.2 km
Chōfu aeropuerto 43.4 km
Tokio New aeropuerto 52.1 km
Tachikawa Airfield 57.2 km
Zama Aeropuerto 60.7 km
Zama Aeropuerto 60.7 km
Tateyama 62.7 km
Tateyama 62.8 km
Base Aérea de Yokota 63.1 km
Katsuura 65.8 km
Ibaraki aeropuerto 68.2 km
Kumagaya 69.8 km
Utsunomiya 71.2 km
Mito 83.7 km
Chichibu 95.5 km
Nikkō 98.0 km
Oshima aeropuerto 100.6 km
Oshima 102.3 km
Chōshi 105.8 km
Ajiro 107.0 km
Maebashi 110.9 km
Mishima 120.6 km
Fuji 121.7 km
Shirakawa 125.5 km
Kawaguchiko 129.3 km
Fuji Mountain 135.8 km
Miyakejima Island 142.3 km
Wakamatsu 150.5 km
Irozaki 151.7 km
Kōfu 152.2 km
Onahama 152.2 km
Karuizawa 160.8 km
Shizuoka 180.3 km
Fukushima 184.3 km
Shizuhama Air Base 195.6 km
Suwa 202.3 km
Nagano 207.1 km
Shimada Aeropuerto 207.3 km
Niigata 209.7 km
Niigata Aeropuerto 209.7 km
Omaezaki 211.3 km
Takada 219.0 km
Matsumoto 221.6 km
Hachijōjima 221.7 km
Yamagata 221.8 km
Matsumoto aeropuerto 225.1 km
Iida 232.5 km
Yamagata Aeropuerto 235.8 km
Sendai aeropuerto 236.2 km
Sendai 244.6 km
Hamamatsu 259.3 km
Shinjō 262.9 km
Shōnai 263.8 km
Aikawa 269.6 km
Sakata 271.1 km
Ishinomaki 279.9 km
Takayama 299.0 km
Toyama 313.3 km
Toyama Aeropuerto 313.6 km
Irako 327.1 km
Fushiki 330.8 km
Nagoya 331.6 km
Akita Aeropuerto 334.5 km
Gifu Air Field 340.3 km
Akita 341.7 km
Hanamaki aeropuerto 346.6 km
Gifu 351.6 km
Ōfunato 351.7 km
Chūbu Centrair aeropuerto 353.6 km
Noto aeropuerto 354.1 km
Wajima 363.3 km
Morioka 369.4 km
Kanazawa 372.5 km
Akeno Air Field 374.3 km
Yokkaichi 376.7 km
Tsu 387.2 km
Komatsu Aeropuerto 394.6 km
Miyako 409.4 km
Hikone 409.9 km
Fukui 411.0 km
Ueno 426.6 km
Tsuruga 428.6 km
Owase 435.7 km
Nara 462.5 km
Kioto 469.2 km
Yao Aeropuerto 489.2 km
Osaka 497.1 km
Shionomisaki Lighthouse 498.3 km
Osaka aeropuerto 503.1 km
Maizuru 512.5 km
Kōbe 529.8 km
Kōbe Aeropuerto 529.9 km
Kansai aeropuerto 530.3 km
Nanki 534.1 km
Wakayama 542.6 km