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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.


Poblíž povětrnostní stanice - Chełm Vzdálenost
Włodawa 41.2 km
Zamość 55.6 km
Lublin (Letiště) 86.1 km
Terespol 94.7 km
Volodymyr 98.2 km
Brest 101.1 km
Lotnisko Lublin-Radawiec 121.6 km
Lvov 145.5 km
Přemyšl 159.6 km
Siedlce 177.7 km
Letiště Řešov-Jasionka 192.5 km
Sandoměř 202.0 km
Bělostok 202.4 km
Lesko 213.8 km
Kozienice 219.4 km
Ivano-Frankivsk 244.4 km
Krosno 244.8 km
Radom Letiště 253.9 km
Grodno 257.4 km
Ivano-Frankivsk Letiště 266.4 km
Kamenica nad Cirochou 281.4 km
Tisinec 284.9 km
Užhorod 291.5 km
Ostrolenka 291.6 km
Ternopil 293.0 km
Varšava - Okecie 299.1 km
Rovno 300.5 km
Tarnów 301.2 km
Pinsk 309.0 km
Suwałki 310.9 km
Kielce 311.7 km
Záhony 317.9 km
Milhostov 321.0 km
Prešov 325.3 km
Sighetu Marmației 331.4 km
Letiště Varšava-Modlin 335.2 km
Baranavičy 343.5 km
Mikołajki 343.6 km
Marijampolė 345.5 km
Lida 346.1 km
Nowy Sącz 348.4 km
Sarny 349.1 km
Ocna Șugatag 352.1 km
Baia Mare 355.6 km
Satu Mare 357.6 km
Košice 359.2 km
Kojsovska Hola 370.0 km
Nyiregyhaza/Napkor 372.3 km
Târgu Lăpuş 380.7 km
Kętrzyn 381.5 km
Kaunas 382.6 km
Ineu Mountain 383.2 km
Supur 386.2 km
Černovice 389.4 km
Kaunas (Letiště) 394.2 km
Vilnius Letiště 396.6 km
Mława 402.7 km
Sulejów 403.1 km
Zalău 407.4 km
Šepetivka 407.4 km
Dej 412.6 km
Švábovce 414.8 km
Lomnický štít 415.7 km
Poprad 419.4 km
Săcueni 420.1 km
Bistrița 422.7 km
Krakov Letiště -Balice 424.5 km
Chmelnyckyj 426.2 km
Jósvafő 428.4 km
Rădăuți 429.0 km
Poiana Stampei 429.4 km
Debrecín 431.3 km
Štrbské Pleso 432.9 km
Olštýn 435.3 km
Raseiniai 435.7 km
Zakopané 436.6 km
Kasprov vrch 437.1 km
Telgárt 437.5 km
Miskolc 439.8 km
Ukmergė 441.5 km
Płock 443.0 km
Darabani 455.1 km
Retitis-Calimani 455.3 km
Oradea 458.0 km
Lodž 458.5 km
Liesek 461.5 km
Sučava Letiště 473.7 km
Panevėžys 478.6 km
Laukuva 478.8 km
Poroszló 480.6 km
Eger 481.3 km
Šiauliai Letiště 484.6 km
Chopok 487.0 km
Šilutė 488.1 km
Šiauliai 489.8 km
Čenstochová 490.0 km
Sluck 490.6 km
Kaliningrad 492.0 km
Botoşani 492.9 km
Žytkavičy 499.5 km