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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 - Chōshi Vzdálenost
Chōshi 0.0 km
Tokio New Intl. Airport 53.9 km
Ibaraki (Letiště) 63.4 km
Mito 71.5 km
Katsuura 79.2 km
Čiba 86.1 km
Shimofusa (Letiště) 95.3 km
Onahama 105.1 km
Tokyo Heliport 114.8 km
Letiště Haneda 121.6 km
Tokio 122.5 km
Tatejama 128.6 km
Ucunomija 131.5 km
Tatejama 131.7 km
Jokohama 137.9 km
Shirakawa 140.4 km
Chōfu (Letiště) 149.1 km
Tachikawa Airfield 162.9 km
Zama Letiště 165.1 km
Zama Letiště 165.1 km
Yokota Air Base 168.8 km
Kumagaja 168.9 km
Nikkó 174.5 km
Fukušima 179.3 km
Wakamatsu 183.6 km
Oshima (Letiště) 186.3 km
Oshima 186.9 km
Chichibu 199.7 km
Miyakejima Island 203.4 km
Ajiro 205.1 km
Sendai (Letiště) 207.5 km
Maebaši 208.3 km
Sendai 218.8 km
Mišima 221.5 km
Jamagata 224.0 km
Fudži 225.4 km
Kawaguchiko 234.6 km
Jamagata Letiště 237.0 km
Išinomaki 238.8 km
Fuji Mountain 240.3 km
Irozaki 244.3 km
Hačidžódžima 254.6 km
Kófu 258.0 km
Karuizawa 262.9 km
Shinjō 266.6 km
Niigata Letiště 272.1 km
Niigata 274.8 km
Šizuoka 282.2 km
Shōnai 289.9 km
Sakata 294.1 km
Shizuhama Air Base 296.4 km
Ófunato 304.6 km
Nagano 307.2 km
Suwa 307.3 km
Šimada Letiště 308.4 km
Omaezaki 310.2 km
Takada 313.4 km
Hanamaki (Letiště) 321.1 km
Macumoto 325.8 km
Matsumoto (Letiště) 329.8 km
Iida 338.2 km
Akita Letiště 341.4 km
Morioka 344.7 km
Aikawa 351.1 km
Akita 352.5 km
Hamamacu 361.3 km
Miyako 362.1 km
Takajama 404.1 km
Tojama 416.2 km
Tojama Letiště 416.7 km
Irako 430.2 km
Fushiki 433.4 km
Nagoja 436.7 km
Gifu Air Field 445.9 km
Noto (Letiště) 453.9 km
Gifu 457.3 km
Letiště Čúbu 458.0 km
Wajima 462.7 km
Kanazawa 476.6 km
Akeno Air Field 477.6 km
Jokkaiči 481.5 km
Cu 491.4 km
Komacu Letiště 499.4 km
Hikone 515.4 km
Fukui 516.5 km
Ueno 531.2 km
Curuga 534.4 km
Owase 537.7 km

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