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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.


Stations météo à proximité - Siemianówka Distance
Hrodna 74.8 km
Brest 81.7 km
Białystok 84.6 km
Terespol 89.0 km
Włodawa 141.9 km
Suwałki 165.8 km
Marijampolė 178.6 km
Lida 189.0 km
Siedlce 194.8 km
Kaunas 203.7 km
Kaunas (Aéroport) 212.6 km
Volodymyr 213.4 km
Lublin (Aéroport) 213.7 km
Vilnius Aéroport 222.0 km
Baranavitchy 235.0 km
Zamość 236.0 km
Lotnisko Lublin-Radawiec 239.3 km
Pinsk 258.6 km
Ukmergė 259.8 km
Ostrołęka 260.6 km
Raseiniai 270.2 km
Mikołajki 273.9 km
Kozienice 294.5 km
Panevėžys 296.1 km
Kętrzyn 307.1 km
Šiauliai Aéroport 312.1 km
Lviv 312.1 km
Šiauliai 318.4 km
Utena 325.8 km
Sandomierz 330.5 km
Varsovie - Okecie 334.8 km
Laukuva 335.8 km
Radom Aéroport 336.2 km
Przemyśl 339.5 km
Švenčionys 339.8 km
Rivne 340.0 km
Sarny 342.6 km
Łyntupy 345.6 km
Biržai 350.0 km
Rzeszów (Aéroport) 351.8 km
Mazovie Varsovie-Modlin (Aéroport) 357.4 km
Bauska 360.5 km
Telšiai 367.1 km
Šilutė 372.6 km
Dūkštas 377.9 km
Dobele 386.6 km
Jelgava 386.8 km
Lesko 390.0 km
Ternopil 391.5 km
Mława 395.8 km
Mažeikiai 396.6 km
Olsztyn 398.3 km
Ivano-Frankivsk 401.7 km
Skrīveri 404.5 km
Krosno 406.3 km
Sloutsk 406.6 km
Kielce 414.9 km
Ivano-Frankivsk Aéroport 415.1 km
Riga Aéroport 415.7 km
Kaliningrad 418.0 km
Saldus 418.9 km
Minsk (Aéroport) 428.7 km
Zīlāni 430.4 km
Klaipėda 430.6 km
Daugavpils 434.3 km
Tarnów 437.6 km
Chepetivka 442.9 km
Palanga 444.6 km
Jytkavitchy 446.6 km
Tisinec 452.0 km
Kamenica nad Cirochou 457.0 km
Płock 464.9 km
Charkowchtchyna 467.6 km
Oujhorod 471.6 km
Dokchytsy 474.3 km
Sulejów 476.1 km
Madona 476.8 km
Khmelnytskyï 487.9 km
Prešov 489.4 km
Liepāja 490.0 km
Nowy Sącz 490.1 km
Milhostov 495.3 km
Záhony 498.1 km
Tchernivtsi 507.4 km
Pāvilosta 510.4 km
Elbląg 514.7 km
Łódź 515.2 km
Rēzekne 524.1 km
Košice 526.4 km
Kojsovska Hola 532.3 km
Verkhniadzvinsk 538.0 km
Cracovie Aéroport -Balice 540.3 km
Darabani 558.0 km
Lomnický štít 559.0 km
Švábovce 562.8 km
Poprad 565.7 km
Zakopane 574.1 km
Štrbské Pleso 575.8 km
Kasprowy Wierch 576.2 km
Częstochowa 576.5 km