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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 - Tokio Vzdálenost
Tokio 0.0 km
Tokyo Heliport 8.9 km
Letiště Haneda 11.5 km
Jokohama 24.9 km
Chōfu (Letiště) 26.6 km
Shimofusa (Letiště) 29.1 km
Čiba 37.8 km
Tachikawa Airfield 40.5 km
Zama Letiště 43.9 km
Zama Letiště 43.9 km
Yokota Air Base 46.7 km
Kumagaja 58.2 km
Tatejama 59.6 km
Tatejama 60.6 km
Tokio New Intl. Airport 69.0 km
Ucunomija 74.5 km
Katsuura 76.3 km
Chichibu 80.2 km
Ibaraki (Letiště) 83.8 km
Oshima (Letiště) 88.8 km
Oshima 90.8 km
Ajiro 91.5 km
Nikkó 93.9 km
Mito 98.2 km
Maebaši 98.7 km
Mišima 104.4 km
Fudži 104.9 km
Kawaguchiko 112.4 km
Fuji Mountain 118.9 km
Chōshi 122.5 km
Shirakawa 133.4 km
Miyakejima Island 135.1 km
Kófu 135.4 km
Irozaki 137.0 km
Karuizawa 146.1 km
Wakamatsu 154.0 km
Šizuoka 163.6 km
Onahama 166.4 km
Shizuhama Air Base 179.1 km
Suwa 186.2 km
Šimada Letiště 190.7 km
Fukušima 193.0 km
Nagano 193.0 km
Omaezaki 195.1 km
Niigata 204.9 km
Niigata Letiště 205.5 km
Macumoto 205.9 km
Takada 206.6 km
Matsumoto (Letiště) 209.2 km
Iida 215.7 km
Hačidžódžima 218.2 km
Jamagata 228.5 km
Jamagata Letiště 242.4 km
Hamamacu 242.6 km
Sendai (Letiště) 246.9 km
Sendai 254.8 km
Aikawa 260.2 km
Shōnai 265.9 km
Shinjō 268.7 km
Sakata 273.7 km
Takajama 282.8 km
Išinomaki 291.5 km
Tojama 298.0 km
Tojama Letiště 298.2 km
Irako 310.3 km
Nagoja 314.6 km
Fushiki 315.5 km
Gifu Air Field 323.4 km
Gifu 334.8 km
Letiště Čúbu 336.7 km
Akita Letiště 339.0 km
Noto (Letiště) 339.7 km
Akita 345.6 km
Wajima 349.0 km
Hanamaki (Letiště) 355.7 km
Kanazawa 356.7 km
Akeno Air Field 357.4 km
Jokkaiči 359.8 km
Ófunato 363.5 km
Cu 370.3 km
Morioka 378.2 km
Komacu Letiště 378.5 km
Hikone 393.0 km
Fukui 394.5 km
Ueno 409.7 km
Curuga 411.9 km
Owase 418.9 km
Miyako 421.0 km
Nara 445.5 km
Kjóto 452.3 km
Yao (Letiště) 472.3 km
Ósaka 480.2 km
Shionomisaki Lighthouse 481.8 km
Letiště Ósaka 486.2 km
Maizuru 495.7 km
Kóbe 512.9 km
Kóbe Letiště 513.0 km
Letiště Kansai 513.4 km
Nanki 517.4 km
Wakajama 525.7 km