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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 - Kalach Distance
Kalach 5.6 km
Kazanskaya 54.4 km
Vysokoye 62.9 km
Boguchar 63.1 km
Anna 111.0 km
Uryupinsk 115.8 km
Zherdevka 130.2 km
Zemtsov 136.5 km
Millerovo 142.8 km
Borisoglebsk 144.2 km
Liski 174.2 km
Novoanninsky 187.6 km
Kosonogov 195.0 km
Morozovsk 197.6 km
Tambov 203.1 km
Serafimovich 207.2 km
Michurinsk 215.8 km
Voronezh 226.6 km
Voronezh 230.3 km
Konstantinovsk 238.1 km
Lipetsk 254.7 km
Balashov 257.0 km
Tsimlyansk 263.0 km
Kirsanov 267.0 km
Morshansk 268.5 km
SredneSadovskiy 291.8 km
Ryazhsk 295.9 km
Frolovo 301.2 km
Yelan 307.4 km
Zametcino 312.7 km
Zimovniki 317.6 km
Valuyki 323.3 km
Gigant 329.1 km
Kotelnikovo 331.9 km
Yelets 335.2 km
Belinsky 340.0 km
Rtishchevo 344.5 km
Ushakovo 345.2 km
Lebedev 346.3 km
Pavelec 346.5 km
Rechnoy 347.0 km
Pachelma 352.7 km
Taganrog 360.5 km
Kumskiy 378.3 km
Ryazan 385.8 km
Elatma 388.1 km
Volgograd 396.1 km
Yefremov 397.5 km
Rudnya 398.5 km
Bogoroditskoe-fenino 411.4 km
Livny 416.4 km
Izium 425.4 km
Temnikov 427.7 km
Remontnoe 434.1 km
Yeysk 434.3 km
Pashkovo 443.1 km
Krasnoslobodsk 451.5 km
Malye Derbety 459.0 km
Kamyshin 486.9 km
Mariupol 489.0 km
Primorsko-Akhtarsk 491.9 km
Kashira 494.1 km
Elista 496.9 km
Penza 498.2 km
Tula 499.8 km
Oktyabrsky Gorodok 505.1 km
Saransk 556.0 km
Jaskul 593.6 km