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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 0.0 km
Kazanskaya 52.9 km
Vysokoye 66.0 km
Boguchar 67.5 km
Uryupinsk 110.5 km
Anna 114.3 km
Zherdevka 128.0 km
Zemtsov 132.8 km
Borisoglebsk 139.6 km
Millerovo 145.5 km
Liski 179.5 km
Novoanninsky 182.1 km
Morozovsk 194.9 km
Kosonogov 197.2 km
Serafimovich 201.9 km
Tambov 202.1 km
Michurinsk 217.3 km
Voronezh 231.5 km
Voronezh 235.1 km
Konstantinovsk 237.8 km
Balashov 251.8 km
Lipetsk 258.3 km
Tsimlyansk 260.4 km
Kirsanov 263.0 km
Morshansk 266.6 km
SredneSadovskiy 287.3 km
Frolovo 295.7 km
Ryazhsk 297.7 km
Yelan 301.9 km
Zametcino 309.4 km
Zimovniki 314.6 km
Kotelnikovo 327.8 km
Gigant 328.3 km
Valuyki 328.8 km
Belinsky 335.6 km
Rtishchevo 339.5 km
Yelets 339.8 km
Lebedev 340.9 km
Rechnoy 341.4 km
Ushakovo 343.4 km
Pachelma 348.6 km
Pavelec 349.5 km
Taganrog 364.1 km
Kumskiy 376.7 km
Elatma 386.8 km
Ryazan 387.8 km
Volgograd 390.9 km
Rudnya 392.9 km
Yefremov 402.0 km
Bogoroditskoe-fenino 416.9 km
Livny 421.5 km
Temnikov 424.4 km
Remontnoe 430.2 km
Izium 430.8 km
Yeysk 438.2 km
Pashkovo 447.0 km
Krasnoslobodsk 447.6 km
Malye Derbety 454.0 km
Kamyshin 481.4 km
Elista 492.6 km
Penza 493.1 km
Mariupol 493.4 km
Primorsko-Akhtarsk 495.4 km
Kashira 497.6 km
Oktyabrsky Gorodok 499.6 km
Tula 503.9 km
Saransk 551.2 km
Jaskul 589.0 km