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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 - Tatejama Vzdálenost
Tatejama 1.7 km
Tatejama 5.6 km
Jokohama 42.5 km
Letiště Haneda 48.3 km
Oshima (Letiště) 53.6 km
Oshima 53.9 km
Tokyo Heliport 55.6 km
Katsuura 57.4 km
Tokio 59.8 km
Čiba 61.3 km
Zama Letiště 65.1 km
Zama Letiště 65.1 km
Chōfu (Letiště) 66.7 km
Shimofusa (Letiště) 72.8 km
Tachikawa Airfield 77.0 km
Ajiro 80.0 km
Miyakejima Island 80.0 km
Yokota Air Base 83.2 km
Tokio New Intl. Airport 91.9 km
Mišima 99.0 km
Fudži 109.4 km
Kumagaja 110.0 km
Irozaki 112.4 km
Chichibu 117.6 km
Ibaraki (Letiště) 122.1 km
Kawaguchiko 124.8 km
Fuji Mountain 125.4 km
Chōshi 133.4 km
Ucunomija 133.4 km
Mito 139.8 km
Maebaši 146.0 km
Kófu 152.3 km
Nikkó 152.6 km
Šizuoka 157.7 km
Hačidžódžima 158.8 km
Shizuhama Air Base 169.7 km
Omaezaki 181.0 km
Karuizawa 181.2 km
Šimada Letiště 181.8 km
Shirakawa 188.7 km
Onahama 207.3 km
Suwa 209.4 km
Wakamatsu 213.1 km
Iida 225.3 km
Nagano 228.9 km
Macumoto 231.7 km
Matsumoto (Letiště) 233.0 km
Hamamacu 235.0 km
Fukušima 247.2 km
Takada 249.1 km
Niigata 262.3 km
Niigata Letiště 263.4 km
Jamagata 285.1 km
Sendai (Letiště) 297.3 km
Jamagata Letiště 299.2 km
Takajama 301.8 km
Irako 304.6 km
Sendai 306.2 km
Aikawa 310.4 km
Nagoja 317.6 km
Tojama Letiště 323.9 km
Tojama 324.5 km
Shōnai 325.6 km
Shinjō 326.3 km
Gifu Air Field 329.9 km
Sakata 333.2 km
Letiště Čúbu 335.4 km
Išinomaki 339.4 km
Gifu 341.3 km
Fushiki 342.2 km
Akeno Air Field 352.0 km
Jokkaiči 360.0 km
Cu 367.9 km
Noto (Letiště) 371.4 km
Kanazawa 378.4 km
Wajima 381.1 km
Komacu Letiště 397.1 km
Hikone 397.7 km
Fukui 408.5 km
Ueno 408.6 km
Owase 409.7 km
Curuga 421.1 km
Nara 444.1 km
Kjóto 454.6 km
Shionomisaki Lighthouse 468.2 km
Yao (Letiště) 470.4 km
Ósaka 479.3 km
Letiště Ósaka 486.4 km
Maizuru 502.4 km
Nanki 507.4 km
Letiště Kansai 510.5 km
Kóbe Letiště 512.1 km
Kóbe 512.6 km
Wakajama 521.3 km