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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 - Rojen Distance
Plovdiv 25.3 km
Kardzhali 74.3 km
Kavala/Chrisoupolis 92.2 km
Lovech 126.4 km
Musala 131.6 km
Mourgash 153.0 km
Serres 154.1 km
Sandanski 166.8 km
Alexandroupolis Airport 167.8 km
Gorna Oryahovitsa Airport 167.9 km
Sofia 169.3 km
Turnu Măgurele 189.4 km
Zimnicea 192.2 km
Sliven 193.0 km
Edirne 205.2 km
Lemnos Airport 206.1 km
Berovo 210.3 km
Bechet 212.4 km
Alexandria 222.2 km
Roşiorii de Vede 225.6 km
Caracal 228.3 km
Giurgiu 240.8 km
Thessaloniki Airport 240.9 km
Dimitrovgrad 249.2 km
Çanakkale 255.5 km
Videle 257.8 km
Razgrad 259.3 km
Gevgelija 259.6 km
Slatina 262.5 km
Craiova 265.1 km
Băileşti 268.2 km
Kriva Palanka 269.1 km
Stolnici 270.9 km
Kırklareli 278.7 km
Demir Kapija 280.5 km
Štip 284.2 km
Drăgăşani 287.2 km
Calafat 292.2 km
Titu 294.5 km
Bucharest 295.9 km
Skyros Airport 296.5 km
Vidin 299.5 km
Piteşti 300.0 km
Aurel Vlaicu Intl. Airport 303.6 km
Oltenița 305.4 km
Skiathos 306.8 km
Otopeni 308.3 km
Burgas 312.3 km
Târgovişte 316.7 km
Burgas Airport 317.0 km
Deduleşti 317.5 km
Bâcleş 319.6 km
Vranje 320.9 km
Logreşti 324.7 km
Tekirdağ 326.2 km
Râmnicu Vâlcea 327.2 km
Leskovac 329.6 km
Curtea de Argeş 333.4 km
Ploieşti 339.1 km
Ayvalık 339.2 km
Negotin 341.3 km
Skopje-Petrovec 343.3 km
Câmpulung 344.1 km
Balıkesir Koca Seyit Airport 344.7 km
Larissa National Airport 345.2 km
Câmpina 346.6 km
Nea Anchialos Airport 346.7 km
Niš 348.5 km
Polovragi 348.6 km
Mytilene 350.8 km
Urziceni 356.3 km
Prilep 357.0 km
Târgu Jiu 359.5 km
Sinaia (1500m) 360.5 km
Çorlu 362.2 km
Fundata 362.9 km
Drobeta-Turnu Severin 365.0 km
Kozani 366.1 km
Voineasa 367.8 km
Omu 368.3 km
Varna Airport 369.5 km
Dikili 369.9 km
Călăraşi 370.7 km
Bâlea Lake 376.6 km
Predeal 377.1 km
Padeş 379.6 km
Obarsia Lotrului 381.0 km
Varna 382.1 km
Petrila 383.1 km
Bitola 384.4 km
Crni Vrh Mountain 384.8 km
Boița 385.3 km
Tanagra Airport 386.2 km
Florina 387.8 km
Petroşani 389.3 km
Chios Airport 389.4 km
Pătârlagele 390.7 km
Bandırma 392.4 km
Păltiniş 393.0 km
Ghimbav 394.2 km

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