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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.


Najbliższa stacja pogodowa - Grójec Odległość
Warszawa - Okęcie 34.8 km
Radom Port lotniczy 61.5 km
Port lotniczy Warszawa-Modlin 63.0 km
Kozienice 81.6 km
Kielce 109.1 km
Sulejów 122.9 km
Mława 142.4 km
Płock 147.6 km
Ostrołęka 149.8 km
Sandomierz 152.3 km
Siedlce 159.5 km
Łódź 163.9 km
Lotnisko Lublin-Radawiec 182.1 km
Tarnów 189.7 km
Olsztyn 205.9 km
Port lotniczy Lublin 215.2 km
Mikołajki 215.9 km
Kraków Port lotniczy -Balice 219.5 km
Port lotniczy Rzeszów-Jasionka 224.1 km
Częstochowa 225.4 km
Nowy Sącz 232.2 km
Kętrzyn 236.8 km
Krosno 245.3 km
Koło 248.3 km
Wieluń 264.5 km
Katowice - Pyrzowice 265.1 km
Toruń 283.6 km
Zakopane 285.1 km
Łomnica 285.6 km
Zamość 286.3 km
Białystok 286.7 km
Tisinec 286.8 km
Elbląg 289.7 km
Kasprowy Wierch 290.1 km
Lesek 290.8 km
Lesko 296.8 km
Preszów 297.1 km
Szczyrbskie Jezioro 298.1 km
Poprad 298.1 km
Włodawa 298.5 km
Bielsko-Biała 298.7 km
Przemyśl 299.4 km
Švábovce 299.8 km
Kaliningrad 300.6 km
Terespol 306.9 km
Kalisz 309.9 km
Brześć 314.8 km
Kojsovska Hola 319.1 km
Telgárt 321.9 km
Kamenica nad Cirochou 327.1 km
Suwałki 330.7 km
Chopok 331.0 km
Koszyce 333.0 km
Żuławki 337.4 km
Milhostov 344.0 km
Opole 347.2 km
Bydgoszcz 349.1 km
Racibórz 351.8 km
Jósvafő 352.5 km
Łysa Góra 361.2 km
Użhorod 367.7 km
Hel 368.0 km
Szyłokarczma 369.3 km
Zilina Hricov 371.3 km
Żylina Port lotniczy 371.7 km
Port Lotniczy Gdańsk im. Lecha Wałęsy 376.2 km
Ostrawa 381.3 km
Sliač 385.4 km
Záhony 385.5 km
Łuczeniec Port lotniczy 387.5 km
Mariampol 391.0 km
Miszkolc 391.1 km
Grodno 397.5 km
Włodzimierz 398.0 km
Lwów 402.0 km
Kłajpeda 404.3 km
Żar nad Hronem 409.1 km
Prievidza 409.9 km
Eger 415.0 km
Szécsény 418.0 km
Nyiregyhaza/Napkor 418.1 km
Ławkowo 418.6 km
Chojnice 419.8 km
Kékes 426.1 km
Połąga 428.7 km
Cervena 429.3 km
Poroszló 438.0 km
rosieński 444.3 km
Dudince 445.2 km
Lębork 447.7 km
Port lotniczy Wrocław-Strachowice 450.1 km
Port lotniczy Poznań-Ławica 451.1 km
Šerák 453.5 km
Holešov 453.7 km
Kowno 454.5 km
Telsze 455.8 km
Debreczyn 460.4 km
Mochovce 460.6 km
Piła 477.8 km
Pieszczany 478.9 km