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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 - Kamagaya Distancia
Shimofusa aeropuerto 3.1 km
Chiba 18.1 km
Tokyo Heliport 21.2 km
Tokio 26.9 km
Haneda aeropuerto 30.4 km
Tokio New aeropuerto 42.7 km
Yokohama 48.2 km
Chōfu aeropuerto 53.2 km
Ibaraki aeropuerto 58.2 km
Katsuura 63.4 km
Tachikawa Airfield 66.6 km
Tateyama 68.4 km
Utsunomiya 68.4 km
Tateyama 68.9 km
Zama Aeropuerto 70.8 km
Zama Aeropuerto 70.8 km
Base Aérea de Yokota 72.4 km
Mito 74.0 km
Kumagaya 76.0 km
Chōshi 96.5 km
Nikkō 99.2 km
Chichibu 103.7 km
Oshima aeropuerto 109.8 km
Oshima 111.4 km
Maebashi 116.9 km
Ajiro 117.1 km
Shirakawa 119.2 km
Mishima 130.9 km
Fuji 131.8 km
Kawaguchiko 139.1 km
Onahama 142.7 km
Fuji Mountain 145.8 km
Wakamatsu 146.6 km
Miyakejima Island 149.4 km
Irozaki 161.6 km
Kōfu 161.6 km
Karuizawa 168.3 km
Fukushima 177.5 km
Shizuoka 190.4 km
Shizuhama Air Base 205.8 km
Niigata Aeropuerto 210.2 km
Niigata 210.5 km
Suwa 211.0 km
Nagano 214.2 km
Yamagata 215.8 km
Shimada Aeropuerto 217.5 km
Omaezaki 221.5 km
Takada 224.8 km
Hachijōjima 226.9 km
Sendai aeropuerto 228.2 km
Yamagata Aeropuerto 229.9 km
Matsumoto 230.0 km
Matsumoto aeropuerto 233.7 km
Sendai 236.8 km
Iida 242.1 km
Shinjō 257.4 km
Shōnai 260.4 km
Sakata 267.4 km
Hamamatsu 269.4 km
Ishinomaki 271.3 km
Aikawa 273.2 km
Takayama 307.8 km
Toyama 321.3 km
Toyama Aeropuerto 321.6 km
Akita Aeropuerto 329.6 km
Irako 337.2 km
Akita 337.2 km
Fushiki 338.7 km
Hanamaki aeropuerto 339.2 km
Nagoya 341.4 km
Ōfunato 343.0 km
Gifu Air Field 349.9 km
Gifu 361.2 km
Noto aeropuerto 361.3 km
Morioka 362.1 km
Chūbu Centrair aeropuerto 363.6 km
Wajima 370.4 km
Kanazawa 380.9 km
Akeno Air Field 384.4 km
Yokkaichi 386.6 km
Tsu 397.1 km
Miyako 400.9 km
Komatsu Aeropuerto 403.3 km
Hikone 419.5 km
Fukui 420.0 km
Ueno 436.5 km
Tsuruga 438.0 km
Owase 445.8 km