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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.


Poblíž povětrnostní stanice - Yokota Air Base Vzdálenost
Yokota Air Base 0.0 km
Tachikawa Airfield 6.8 km
Zama Letiště 20.6 km
Zama Letiště 20.6 km
Chōfu (Letiště) 20.9 km
Kumagaja 34.0 km
Chichibu 35.6 km
Jokohama 42.8 km
Tokio 46.7 km
Letiště Haneda 51.1 km
Tokyo Heliport 55.2 km
Maebaši 63.2 km
Fudži 65.0 km
Ajiro 65.2 km
Kawaguchiko 68.3 km
Mišima 70.7 km
Shimofusa (Letiště) 73.8 km
Fuji Mountain 76.7 km
Oshima (Letiště) 81.8 km
Tatejama 84.0 km
Čiba 84.5 km
Oshima 84.5 km
Nikkó 84.8 km
Tatejama 86.8 km
Ucunomija 88.9 km
Kófu 89.3 km
Karuizawa 101.6 km
Irozaki 111.6 km
Tokio New Intl. Airport 115.0 km
Katsuura 119.1 km
Ibaraki (Letiště) 124.1 km
Šizuoka 124.5 km
Mito 135.5 km
Miyakejima Island 138.9 km
Suwa 139.6 km
Shizuhama Air Base 141.0 km
Nagano 149.3 km
Šimada Letiště 151.9 km
Shirakawa 152.1 km
Omaezaki 158.7 km
Macumoto 159.6 km
Wakamatsu 160.0 km
Matsumoto (Letiště) 162.6 km
Takada 166.7 km
Chōshi 168.8 km
Iida 170.0 km
Niigata 185.6 km
Niigata Letiště 187.8 km
Onahama 200.7 km
Hamamacu 201.8 km
Fukušima 210.8 km
Aikawa 227.4 km
Hačidžódžima 228.3 km
Takajama 236.1 km
Jamagata 240.1 km
Tojama 252.0 km
Tojama Letiště 252.0 km
Jamagata Letiště 253.4 km
Shōnai 264.0 km
Irako 267.9 km
Sendai (Letiště) 269.3 km
Fushiki 269.6 km
Nagoja 269.7 km
Sakata 272.8 km
Sendai 275.7 km
Shinjō 276.9 km
Gifu Air Field 277.7 km
Gifu 289.0 km
Letiště Čúbu 292.7 km
Noto (Letiště) 295.0 km
Wajima 304.5 km
Kanazawa 310.2 km
Akeno Air Field 314.6 km
Jokkaiči 315.3 km
Išinomaki 316.2 km
Cu 326.4 km
Komacu Letiště 331.8 km
Akita Letiště 342.5 km
Akita 347.1 km
Hikone 347.4 km
Fukui 347.8 km
Ueno 365.3 km
Curuga 365.6 km
Hanamaki (Letiště) 372.2 km
Owase 377.1 km
Ófunato 388.1 km
Morioka 393.8 km
Nara 401.2 km
Kjóto 407.1 km
Yao (Letiště) 428.0 km
Ósaka 435.6 km
Letiště Ósaka 441.3 km
Shionomisaki Lighthouse 441.3 km
Miyako 444.4 km
Maizuru 449.7 km
Kóbe 468.1 km
Kóbe Letiště 468.3 km
Letiště Kansai 469.2 km
Nanki 475.4 km
Wakajama 481.9 km