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 - Siemianówka Odległość
Grodno 74.8 km
Brześć 81.7 km
Białystok 84.6 km
Terespol 89.0 km
Włodawa 141.9 km
Suwałki 165.8 km
Mariampol 178.6 km
Lida 189.0 km
Siedlce 194.8 km
Kowno 203.7 km
Port lotniczy Kowno 212.6 km
Włodzimierz 213.4 km
Port lotniczy Lublin 213.7 km
Wilno Port lotniczy 222.0 km
Baranowicze 235.0 km
Zamość 236.0 km
Lotnisko Lublin-Radawiec 239.3 km
Pińsk 258.6 km
Wiłkomierz 259.8 km
Ostrołęka 260.6 km
rosieński 270.2 km
Mikołajki 273.9 km
Kozienice 294.5 km
Poniewież 296.1 km
Kętrzyn 307.1 km
Szawle Port lotniczy 312.1 km
Lwów 312.1 km
Szawle 318.4 km
Uciana 325.8 km
Sandomierz 330.5 km
Warszawa - Okęcie 334.8 km
Ławkowo 335.8 km
Radom Port lotniczy 336.2 km
Przemyśl 339.5 km
Święciany 339.8 km
Równe 340.0 km
Sarny 342.6 km
Łyntupy 345.6 km
Birże 350.0 km
Port lotniczy Rzeszów-Jasionka 351.8 km
Port lotniczy Warszawa-Modlin 357.4 km
Bauska 360.5 km
Telsze 367.1 km
Szyłokarczma 372.6 km
Dukszty 377.9 km
Dobele 386.6 km
Jełgawa 386.8 km
Lesko 390.0 km
Tarnopol 391.5 km
Mława 395.8 km
Możejki 396.6 km
Olsztyn 398.3 km
Iwano-Frankiwsk 401.7 km
Skrīveri 404.5 km
Krosno 406.3 km
Słuck 406.6 km
Kielce 414.9 km
Iwano-Frankiwsk Port lotniczy 415.1 km
Ryga Port lotniczy 415.7 km
Kaliningrad 418.0 km
Saldus 418.9 km
Port lotniczy Mińsk 428.7 km
Zīlāni 430.4 km
Kłajpeda 430.6 km
Dyneburg 434.3 km
Tarnów 437.6 km
Szepetówka 442.9 km
Połąga 444.6 km
Żytkowicze 446.6 km
Tisinec 452.0 km
Kamenica nad Cirochou 457.0 km
Płock 464.9 km
Szarkowszczyzna 467.6 km
Użhorod 471.6 km
Dokszyce 474.3 km
Sulejów 476.1 km
Madona 476.8 km
Chmielnicki 487.9 km
Preszów 489.4 km
Lipawa 490.0 km
Nowy Sącz 490.1 km
Milhostov 495.3 km
Záhony 498.1 km
Czerniowce 507.4 km
Pāvilosta 510.4 km
Elbląg 514.7 km
Łódź 515.2 km
Rzeżyca 524.1 km
Koszyce 526.4 km
Kojsovska Hola 532.3 km
Wierchniedźwińsk 538.0 km
Kraków Port lotniczy -Balice 540.3 km
Darabani 558.0 km
Łomnica 559.0 km
Švábovce 562.8 km
Poprad 565.7 km
Zakopane 574.1 km
Szczyrbskie Jezioro 575.8 km
Kasprowy Wierch 576.2 km
Częstochowa 576.5 km