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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 - Pereiaslav Distance
Myronivka 62.0 km
Boryspil 67.6 km
Kyiv 116.2 km
Chernihiv 136.5 km
Hostomel Airport 149.7 km
Kropyvnytskyi 167.3 km
Lubny 174.5 km
Uman 182.7 km
Brahin 214.0 km
Svitlovodsk 221.3 km
Konotop 224.4 km
Gomel 230.6 km
Liubashivka 248.1 km
Kryvyi Rih Airport 272.0 km
Vasilievichy 276.7 km
Shirki 282.0 km
Mykolaiv 288.2 km
Zhytomyr 302.9 km
Zhlobin 313.9 km
Mazyr 315.6 km
Kastsyukovichy 319.8 km
Vinnytsia 326.9 km
Slawharad 327.5 km
Kherson 345.6 km
Poltava 347.6 km
Trubchevsk 350.6 km
Odessa/Tsentralny 353.0 km
Sumy 365.8 km
Roslavl 397.1 km
Babruysk 398.8 km
Chişinău 400.6 km
Mogilev 403.6 km
Klichaw 406.5 km
Horki 408.9 km
Chişinău Airport 410.9 km
Dnipro 414.1 km
Zhukovka 415.0 km
Pochinok 426.7 km
Mohyliv-Podilskyi 436.5 km
Bryansk 437.4 km
Orsha 439.6 km
Smolensk 450.1 km
Zhytkavichy 450.6 km
Byerazino 454.5 km
Zaporizhzhia 475.7 km
Proletarskiy 485.5 km
Shepetivka 491.8 km
Syanno 496.1 km
Marjina Horka 496.1 km
Spas-Demensk 498.7 km
Iaşi 508.4 km
Ștefăneşti 517.7 km
Bârnova 521.4 km
Slutsk 521.5 km
Barysaw 522.7 km
Vaslui 530.5 km
Negreşti 544.0 km
Lyepyel 557.1 km
Bârlad 561.6 km
Minsk National Airport 567.3 km
Sukhinichi 574.5 km
Adjud 611.1 km
Dokshytsy 622.6 km