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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 - Nagareyama Distancia
Shimofusa aeropuerto 13.2 km
Tokyo Heliport 19.5 km
Tokio 20.5 km
Haneda aeropuerto 28.6 km
Chiba 30.8 km
Chōfu aeropuerto 44.1 km
Yokohama 45.0 km
Tokio New aeropuerto 54.3 km
Tachikawa Airfield 56.6 km
Utsunomiya 59.7 km
Base Aérea de Yokota 61.8 km
Kumagaya 62.9 km
Zama Aeropuerto 63.2 km
Zama Aeropuerto 63.2 km
Ibaraki aeropuerto 63.9 km
Tateyama 73.8 km
Tateyama 73.9 km
Katsuura 75.7 km
Mito 77.8 km
Nikkō 87.2 km
Chichibu 91.6 km
Maebashi 103.8 km
Chōshi 108.1 km
Oshima aeropuerto 108.7 km
Oshima 110.6 km
Ajiro 111.9 km
Shirakawa 115.1 km
Fuji 123.5 km
Mishima 124.2 km
Kawaguchiko 129.6 km
Fuji Mountain 137.0 km
Wakamatsu 139.1 km
Onahama 145.9 km
Kōfu 151.1 km
Miyakejima Island 152.5 km
Karuizawa 155.7 km
Irozaki 157.5 km
Fukushima 174.3 km
Shizuoka 182.8 km
Shizuhama Air Base 198.5 km
Niigata Aeropuerto 198.7 km
Niigata 198.8 km
Suwa 199.2 km
Nagano 201.3 km
Shimada Aeropuerto 210.0 km
Yamagata 211.1 km
Takada 211.6 km
Omaezaki 214.8 km
Matsumoto 217.8 km
Matsumoto aeropuerto 221.7 km
Yamagata Aeropuerto 225.1 km
Sendai aeropuerto 227.2 km
Iida 231.8 km
Hachijōjima 232.9 km
Sendai 235.3 km
Shinjō 252.0 km
Shōnai 252.3 km
Sakata 259.7 km
Aikawa 260.2 km
Hamamatsu 261.4 km
Ishinomaki 271.4 km
Takayama 296.1 km
Toyama 308.8 km
Toyama Aeropuerto 309.2 km
Akita Aeropuerto 323.3 km
Fushiki 326.2 km
Irako 328.6 km
Akita 330.5 km
Nagoya 331.5 km
Hanamaki aeropuerto 336.8 km
Gifu Air Field 339.5 km
Ōfunato 343.3 km
Noto aeropuerto 348.4 km
Gifu 350.8 km
Chūbu Centrair aeropuerto 354.2 km
Wajima 357.5 km
Morioka 359.5 km
Kanazawa 368.7 km
Akeno Air Field 375.6 km
Yokkaichi 377.0 km
Tsu 387.9 km
Komatsu Aeropuerto 391.4 km
Miyako 400.9 km
Fukui 408.5 km
Hikone 409.2 km
Ueno 427.0 km
Tsuruga 427.0 km
Owase 437.5 km
Nara 462.8 km
Kioto 468.9 km
Yao Aeropuerto 489.6 km
Osaka 497.3 km
Shionomisaki Lighthouse 500.9 km
Osaka aeropuerto 503.1 km
Maizuru 511.3 km
Kōbe 529.8 km
Kōbe Aeropuerto 530.0 km
Kansai aeropuerto 530.8 km
Nanki 535.9 km
Wakayama 543.3 km