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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.


Nearby Weather Stations - Shirakawa Distance
Shirakawa 0.0 km
Wakamatsu 44.8 km
Fukushima 59.7 km
Utsunomiya 63.2 km
Mito 70.0 km
Onahama 77.7 km
Ibaraki Airport 84.5 km
Nikkō 86.7 km
Yamagata 96.8 km
Yamagata Airport 110.8 km
Shimofusa Airport 116.2 km
Sendai Airport 117.3 km
Tokio New (IAP) 118.5 km
Sendai 123.6 km
Kumagaya 124.9 km
Chiba 131.7 km
Tokyo 133.4 km
Tokyo Heliport 134.5 km
Shinjō 138.8 km
Chōshi 140.4 km
Niigata Airport 141.4 km
Maebashi 142.3 km
Haneda Airport 143.4 km
Niigata 145.9 km
Chōfu Airport 146.1 km
Shōnai 150.9 km
Tachikawa Airfield 151.1 km
Yokota Air Base 152.1 km
Sakata 156.2 km
Yokohama 158.0 km
Chichibu 159.5 km
Ishinomaki 164.6 km
Zama Airport 165.4 km
Zama Airport 165.4 km
Katsuura 170.1 km
Tateyama 187.5 km
Tateyama 188.0 km
Karuizawa 197.5 km
Akita Airport 212.3 km
Kawaguchiko 212.5 km
Fuji 215.1 km
Ajiro 216.1 km
Takada 218.9 km
Akita 221.2 km
Oshima Airport 221.5 km
Hanamaki Airport 222.5 km
Mishima 222.7 km
Kōfu 223.1 km
Oshima 223.6 km
Fuji Mountain 223.7 km
Nagano 227.9 km
Aikawa 232.6 km
Ōfunato 236.3 km
Morioka 244.9 km
Suwa 250.9 km
Matsumoto 261.3 km
Odate- Noshiro Airport 262.5 km
Irozaki 263.0 km
Miyakejima Island 267.6 km
Matsumoto Airport 268.0 km
Shizuoka 272.6 km
Shizuhama Air Base 289.7 km
Miyako 292.3 km
Iida 298.1 km
Shimada Airport 299.5 km
Fukaura 301.8 km
Omaezaki 308.5 km
Aomori Airport 313.7 km
Aomori 322.2 km
JMSDF Hachinohe Air Base 326.2 km
Hachinohe 328.1 km
Misawa 333.2 km
Toyama 337.8 km
Toyama Airport 339.6 km
Takayama 340.3 km
Hamamatsu 345.2 km
Hachijō-jima 345.9 km
Fushiki 353.0 km
Noto Airport 362.6 km
Ōminato Guard 367.4 km
Wajima 369.8 km
Mutsu 374.5 km
Nagoya 397.3 km
Gifu Air Field 399.8 km
Kanazawa 401.5 km
Hakodate Airport 404.0 km
Esashi 404.7 km
Irako 405.8 km
Hakodate 406.5 km
Gifu 410.3 km
Chubu Centrair Intl. Airport 424.5 km
Komatsu Airport 428.5 km
Yokkaichi 443.9 km
Akeno Air Field 450.0 km
Fukui 452.4 km
Tsu 457.7 km
Hikone 467.9 km
Tsuruga 478.0 km
Ueno 493.4 km
Owase 514.4 km

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