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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.


Nearby Weather Stations - Zgierz Distance
Łódź 13.3 km
Sulejów 73.8 km
Płock 85.4 km
Koło 90.2 km
Wieluń 114.2 km
Częstochowa 114.3 km
Kalisz 146.7 km
Toruń 155.6 km
Warsaw Modlin Airport 158.8 km
Mława 168.2 km
Katowice-Pyrzowice 174.8 km
Warsaw - Okecie 177.5 km
Kielce 180.6 km
Kraków Airport -Balice 190.9 km
Opole 205.0 km
Radom Airport 207.5 km
Bydgoszcz 208.1 km
Bielsko-Biała 220.1 km
Olsztyn 230.3 km
Racibórz 232.0 km
Kozienice 241.2 km
Elbląg 242.8 km
Tarnów 259.4 km
Liesek 262.4 km
Lysá hora 264.3 km
Żuławki 266.2 km
Ostrava 269.4 km
Nowy Sącz 273.2 km
Ostrołęka 273.3 km
Zakopane 275.1 km
Kasprowy Wierch 281.8 km
Sandomierz 284.4 km
Gdańsk Lech Wałęsa Airport 285.9 km
Chojnice 286.4 km
Zilina Hricov 288.9 km
Žilina Airport 289.1 km
Poznań 290.1 km
Copernicus Airport Wrocław 290.8 km
Lomnický štít 292.0 km
Štrbské Pleso 296.3 km
Hel 296.9 km
Cervena 301.3 km
Chopok 301.6 km
Poprad 306.4 km
Šerák 309.8 km
Švábovce 312.1 km
Mikołajki 315.8 km
Kętrzyn 318.5 km
Leszno 319.1 km
Siedlce 320.0 km
Piła 324.8 km
Kaliningrad 326.1 km
Telgárt 326.1 km
Holešov 336.4 km
Prievidza 336.5 km
Sliač 337.4 km
Lębork 338.8 km
Lotnisko Lublin-Radawiec 339.6 km
Kłodzko 344.2 km
Krosno 345.6 km
Rzeszów 346.7 km
Žiar nad Hronom 349.0 km
Prostějov 357.5 km
Luká 358.0 km
Szczecinek 361.2 km
Legnica 362.8 km
Prešov 363.4 km
Kojsovska Hola 365.7 km
Kunovice Airport 369.3 km
Łeba 370.0 km
Lučenec Airport 370.1 km
Tisinec 371.6 km
Jósvafő 374.1 km
Lublin Airport 374.4 km
Polom 377.7 km
Piešťany 383.1 km
Ústí nad Orlicí 384.9 km
Košice 389.0 km
Mochovce 390.2 km
Dudince 391.9 km
Szécsény 392.1 km
Zielona Góra 402.3 km
Nitra Airport 402.6 km
Ustka 403.9 km
Jaslovské Bohunice 404.3 km
Petrobaltic Beta 405.9 km
Lesko 411.4 km
Jelenia Góra 414.4 km
Brno 414.7 km
Kamenica nad Cirochou 419.0 km
Miskolc 419.5 km
Milhostov 421.3 km
Kékes 423.0 km
Sněžka 424.2 km
Sněžka 426.7 km
Eger 427.7 km
Šilutė 430.6 km
Przemyśl 431.0 km
Svratouch 436.6 km
Białystok 438.9 km