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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 - Katsuura Vzdálenost
Katsuura 0.0 km
Čiba 45.4 km
Tatejama 52.1 km
Tokio New Intl. Airport 53.4 km
Tatejama 55.7 km
Shimofusa (Letiště) 65.0 km
Tokyo Heliport 67.5 km
Letiště Haneda 68.5 km
Tokio 76.3 km
Jokohama 78.0 km
Chōshi 79.2 km
Ibaraki (Letiště) 89.1 km
Chōfu (Letiště) 98.4 km
Mito 107.1 km
Zama Letiště 107.3 km
Zama Letiště 107.3 km
Oshima (Letiště) 111.0 km
Oshima 111.1 km
Tachikawa Airfield 112.3 km
Yokota Air Base 119.1 km
Miyakejima Island 124.4 km
Ucunomija 129.6 km
Kumagaja 134.3 km
Ajiro 135.7 km
Mišima 154.0 km
Chichibu 154.4 km
Fudži 162.0 km
Nikkó 162.6 km
Onahama 167.9 km
Irozaki 169.8 km
Shirakawa 170.1 km
Maebaši 175.0 km
Kawaguchiko 175.1 km
Fuji Mountain 177.9 km
Hačidžódžima 183.4 km
Kófu 201.5 km
Wakamatsu 204.2 km
Šizuoka 213.9 km
Karuizawa 220.7 km
Fukušima 223.6 km
Shizuhama Air Base 226.5 km
Omaezaki 238.3 km
Šimada Letiště 238.7 km
Suwa 256.4 km
Jamagata 265.7 km
Sendai (Letiště) 265.7 km
Nagano 268.1 km
Niigata Letiště 273.4 km
Niigata 273.9 km
Sendai 275.9 km
Macumoto 277.5 km
Iida 278.2 km
Jamagata Letiště 279.6 km
Matsumoto (Letiště) 279.9 km
Takada 282.8 km
Hamamacu 291.9 km
Išinomaki 303.7 km
Shinjō 308.4 km
Shōnai 318.0 km
Sakata 324.3 km
Aikawa 335.3 km
Takajama 351.5 km
Irako 361.5 km
Tojama Letiště 370.2 km
Tojama 370.4 km
Nagoja 372.9 km
Ófunato 373.0 km
Hanamaki (Letiště) 379.8 km
Akita Letiště 382.4 km
Gifu Air Field 384.3 km
Fushiki 388.0 km
Akita 391.3 km
Letiště Čúbu 391.6 km
Gifu 395.7 km
Morioka 403.2 km
Akeno Air Field 408.9 km
Noto (Letiště) 414.1 km
Jokkaiči 416.0 km
Wajima 423.6 km
Cu 424.4 km
Kanazawa 427.1 km
Miyako 431.1 km
Komacu Letiště 447.3 km
Hikone 452.8 km
Fukui 460.7 km
Ueno 464.9 km
Owase 467.0 km
Curuga 474.9 km

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