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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 - Siemiatycze Odległość
Siedlce 69.0 km
Białystok 78.4 km
Terespol 92.6 km
Brześć 97.7 km
Włodawa 116.8 km
Port lotniczy Lublin 121.8 km
Lotnisko Lublin-Radawiec 133.4 km
Ostrołęka 158.5 km
Kozienice 169.2 km
Suwałki 176.4 km
Grodno 180.1 km
Zamość 180.5 km
Mikołajki 199.3 km
Radom Port lotniczy 210.8 km
Warszawa - Okęcie 211.2 km
Sandomierz 217.2 km
Mariampol 223.4 km
Włodzimierz 229.7 km
Kętrzyn 237.1 km
Port lotniczy Warszawa-Modlin 237.5 km
Port lotniczy Rzeszów-Jasionka 254.4 km
Przemyśl 268.7 km
Kowno 274.8 km
Mława 287.1 km
Kielce 290.9 km
Lwów 292.5 km
Port lotniczy Kowno 294.2 km
Olsztyn 304.8 km
rosieński 306.8 km
Krosno 307.0 km
Lesko 308.2 km
Lida 314.0 km
Tarnów 322.3 km
Ławkowo 336.1 km
Wilno Port lotniczy 337.0 km
Szyłokarczma 340.6 km
Płock 347.4 km
Kaliningrad 349.5 km
Sulejów 350.0 km
Tisinec 355.7 km
Baranowicze 357.8 km
Wiłkomierz 359.6 km
Szawle Port lotniczy 361.1 km
Pińsk 364.9 km
Szawle 365.0 km
Kamenica nad Cirochou 370.7 km
Telsze 373.4 km
Nowy Sącz 375.5 km
Poniewież 380.4 km
Preszów 388.9 km
Łódź 390.8 km
Iwano-Frankiwsk 391.9 km
Użhorod 394.3 km
Kłajpeda 395.8 km
Milhostov 405.7 km
Możejki 409.0 km
Równe 410.0 km
Iwano-Frankiwsk Port lotniczy 413.8 km
Połąga 415.0 km
Kraków Port lotniczy -Balice 416.9 km
Záhony 420.0 km
Elbląg 421.5 km
Koszyce 427.5 km
Tarnopol 428.9 km
Kojsovska Hola 428.9 km
Dobele 433.6 km
Bauska 434.3 km
Sarny 434.7 km
Uciana 438.1 km
Saldus 440.0 km
Birże 440.4 km
Łomnica 443.7 km
Jełgawa 446.7 km
Švábovce 449.6 km
Częstochowa 450.3 km
Poprad 451.7 km
Zakopane 456.3 km
Kasprowy Wierch 458.9 km
Szczyrbskie Jezioro 460.1 km
Święciany 461.0 km
Lipawa 466.9 km
Koło 466.9 km
Łyntupy 468.0 km
Lesek 473.6 km
Telgárt 473.8 km
Żuławki 479.3 km
Toruń 479.5 km
Jósvafő 481.7 km
Katowice - Pyrzowice 481.7 km
Ryga Port lotniczy 483.5 km
Wieluń 492.9 km
Pāvilosta 497.1 km
Dukszty 497.4 km
Skrīveri 499.0 km
Hel 503.8 km
Miszkolc 505.4 km
Bielsko-Biała 507.6 km
Chopok 507.7 km
Port Lotniczy Gdańsk im. Lecha Wałęsy 528.7 km
Czerniowce 532.8 km