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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.


Estaciones meteorológicas cercanas - Niigata Distancia
Niigata 0.0 km
Niigata Aeropuerto 7.6 km
Aikawa 90.7 km
Wakamatsu 103.2 km
Shōnai 111.7 km
Nikkō 111.7 km
Takada 112.2 km
Sakata 121.9 km
Maebashi 127.5 km
Nagano 140.9 km
Karuizawa 143.8 km
Shirakawa 145.9 km
Utsunomiya 147.1 km
Yamagata 147.5 km
Yamagata Aeropuerto 153.0 km
Kumagaya 153.5 km
Shinjō 157.7 km
Fukushima 158.3 km
Chichibu 162.6 km
Matsumoto 184.0 km
Base Aérea de Yokota 185.6 km
Suwa 187.3 km
Tachikawa Airfield 190.1 km
Akita 192.2 km
Matsumoto aeropuerto 192.4 km
Akita Aeropuerto 194.1 km
Kōfu 196.5 km
Chōfu aeropuerto 196.8 km
Mito 204.6 km
Tokio 204.9 km
Kawaguchiko 205.2 km
Zama Aeropuerto 206.1 km
Zama Aeropuerto 206.1 km
Sendai 208.1 km
Shimofusa aeropuerto 208.9 km
Sendai aeropuerto 210.5 km
Ibaraki aeropuerto 211.6 km
Tokyo Heliport 211.9 km
Haneda aeropuerto 216.1 km
Fuji Mountain 217.4 km
Fuji 219.2 km
Yokohama 220.1 km
Onahama 221.8 km
Chiba 228.5 km
Toyama 229.3 km
Toyama Aeropuerto 232.5 km
Tokio New aeropuerto 235.3 km
Mishima 235.6 km
Noto aeropuerto 238.1 km
Fushiki 240.7 km
Ajiro 241.2 km
Iida 241.5 km
Odate- Noshiro aeropuerto 242.8 km
Wajima 243.4 km
Takayama 248.2 km
Fukaura 251.4 km
Ishinomaki 254.3 km
Shizuoka 257.2 km
Tateyama 262.6 km
Tateyama 264.3 km
Hanamaki aeropuerto 265.6 km
Oshima aeropuerto 266.4 km
Oshima 269.2 km
Shizuhama Air Base 272.6 km
Katsuura 273.9 km
Chōshi 274.8 km
Shimada Aeropuerto 277.7 km
Irozaki 279.3 km
Morioka 280.4 km
Kanazawa 290.6 km
Omaezaki 292.2 km
Aomori aeropuerto 302.0 km
Hamamatsu 306.1 km
Aomori 312.2 km
Ōfunato 312.8 km
Komatsu Aeropuerto 319.8 km
Gifu Air Field 320.0 km
Miyakejima Island 324.3 km
Nagoya 324.9 km
Gifu 328.3 km
Irako 348.7 km
Fukui 349.1 km
Misawa 350.9 km
JMSDF Hachinohe Air Base 351.1 km
Chūbu Centrair aeropuerto 355.3 km
Hachinohe 355.8 km
Esashi 355.8 km
Miyako 357.2 km
Ōminato Guard 365.9 km
Yokkaichi 368.7 km
Mutsu 375.3 km
Hikone 380.3 km
Tsuruga 380.7 km
Hakodate 382.2 km
Hakodate Aeropuerto 382.9 km
Akeno Air Field 384.7 km
Tsu 385.2 km
Ueno 413.8 km
Hachijōjima 413.9 km
Kioto 439.0 km