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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 - Viannos Vzdálenost
Kastelli (Letiště) 16.4 km
Heráklion Letiště 37.3 km
Tympaki (Letiště) 70.1 km
Sitia Letiště 79.8 km
Théra 137.5 km
Letiště Chania 148.6 km
Milos Letiště 195.3 km
Paros Letiště 199.8 km
Naxos Letiště 204.3 km
Naxos 206.3 km
Karpathos 211.1 km
Mykonos 239.8 km
Syros Letiště 246.9 km
Kós Letiště 256.9 km
Leros 264.1 km
Kythéra 293.4 km
Datça 301.1 km
Bodrum 301.6 km
Samos Letiště 312.9 km
Rhodes/Paradissi 327.5 km
Milas- Bodrum (Letiště) 333.1 km
Athény Letiště 333.3 km
El Venizelos 333.7 km
Chios Letiště 339.1 km
Tobruk 340.2 km
Çeşme 340.6 km
Elliniko (Letiště) 342.9 km
Kuşadası 348.4 km
Sallum 351.9 km
Tatoi 358.1 km
Marmaris 365.8 km
Eleusis Letiště 368.5 km
İzmir Adnan Menderes (Letiště) 377.4 km
Çiğli Air Base 389.5 km
Aydın 389.9 km
Smyrna 390.8 km
Tanagra Letiště 390.8 km
Muğla 394.1 km
Skyros Letiště 408.3 km
Dalaman 412.0 km
Tripolis Letiště 418.8 km
Manisa 421.5 km
Mersa Matrúh Letiště 422.4 km
Mytiléna 423.5 km
Kalamata 429.0 km
Dikili 434.8 km
Fethiye 441.8 km
Ayvalık 449.0 km
Methoni 450.3 km
Skiathos 469.2 km
Akhisar 471.6 km
Kastelorizo 475.6 km
Balıkesir Koca Seyit (Letiště) 484.4 km
Kaş 486.5 km
Lémnos Letiště 490.0 km
Denizli 491.2 km
Lamia 510.3 km
Nea Anchialos (Letiště) 513.4 km
Balıkesir 533.7 km
Andravida 543.9 km
Patras Araxos (Letiště) 544.8 km
Uşak 571.9 km
Larissa National (Letiště) 572.5 km
Alexandria/Nouzha (Letiště) 633.7 km
Kütahya 667.9 km