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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.


Estaciones meteorológicas cercanas - Siemiatycze Distancia
Siedlce 69.0 km
Białystok 78.4 km
Terespol 92.6 km
Brest 97.7 km
Włodawa 116.8 km
Lublin aeropuerto 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 Aeropuerto 210.8 km
Varsovia - Okecie 211.2 km
Sandomierz 217.2 km
Marijampolė 223.4 km
Volodímir 229.7 km
Kętrzyn 237.1 km
Varsovia-Modlin aeropuerto 237.5 km
Rzeszów aeropuerto 254.4 km
Przemyśl 268.7 km
Kaunas 274.8 km
Mlawa 287.1 km
Kielce 290.9 km
Leópolis 292.5 km
Kaunas aeropuerto 294.2 km
Olsztyn 304.8 km
Raseiniai 306.8 km
Krosno 307.0 km
Lesko 308.2 km
Lida 314.0 km
Tarnów 322.3 km
Laukuva 336.1 km
Vilna Aeropuerto 337.0 km
Šilutė 340.6 km
Płock 347.4 km
Kaliningrado 349.5 km
Sulejów 350.0 km
Tisinec 355.7 km
Baránavichi 357.8 km
Ukmergė 359.6 km
Šiauliai Aeropuerto 361.1 km
Pinsk 364.9 km
Šiauliai 365.0 km
Kamenica nad Cirochou 370.7 km
Telšiai 373.4 km
Nowy Sącz 375.5 km
Panevėžys 380.4 km
Prešov 388.9 km
Lodz 390.8 km
Ivano-Frankivsk 391.9 km
Úzhgorod 394.3 km
Klaipėda 395.8 km
Milhostov 405.7 km
Mažeikiai 409.0 km
Rivne 410.0 km
Ivano-Frankivsk Aeropuerto 413.8 km
Palanga 415.0 km
Cracovia Aeropuerto -Balice 416.9 km
Záhony 420.0 km
Elbląg 421.5 km
Košice 427.5 km
Ternópil 428.9 km
Kojsovska Hola 428.9 km
Dobele 433.6 km
Bauska 434.3 km
Sarny 434.7 km
Utena 438.1 km
Saldus 440.0 km
Biržai 440.4 km
Lomnický štít 443.7 km
Jelgava 446.7 km
Švábovce 449.6 km
Częstochowa 450.3 km
Poprad 451.7 km
Zakopane 456.3 km
Kasprowy Wierch 458.9 km
Štrbské Pleso 460.1 km
Švenčionys 461.0 km
Liepāja 466.9 km
Koło 466.9 km
Łyntupy 468.0 km
Liesek 473.6 km
Telgárt 473.8 km
Żuławki 479.3 km
Toruń 479.5 km
Jósvafő 481.7 km
Katowice-Pyrzowice 481.7 km
Riga Aeropuerto 483.5 km
Wieluń 492.9 km
Pāvilosta 497.1 km
Dūkštas 497.4 km
Skrīveri 499.0 km
Hel 503.8 km
Miskolc 505.4 km
Bielsko-Biała 507.6 km
Chopok 507.7 km
Gdańsk-Lech Wałęsa aeropuerto 528.7 km
Chernivtsí 532.8 km