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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 - Mégara Distancia
Eleusis Aeropuerto 25.6 km
Tanagra Aeropuerto 40.7 km
Elliniko aeropuerto 44.7 km
Tatoi 51.8 km
El Venizelos 65.3 km
Atenas Aeropuerto 68.8 km
Trípoli Aeropuerto 113.7 km
Scíathos 124.0 km
Lamía 135.5 km
Nea Anjíalos Aeropuerto 140.1 km
Esciros Aeropuerto 162.5 km
Kalamata 174.2 km
Citera 177.5 km
Milo Aeropuerto 182.7 km
Siros Aeropuerto 187.9 km
Nacional de Lárisa aeropuerto 197.6 km
Patras Araxos aeropuerto 214.1 km
Modona 216.9 km
Paros Aeropuerto 222.6 km
Andravida 228.3 km
Miconos 231.3 km
Naxos 244.0 km
Naxos Aeropuerto 244.3 km
Macedonia aeropuerto 262.5 km
La Canea aeropuerto 264.7 km
Zacinto Aeropuerto 273.8 km
Santorini 282.6 km
Lemnos Aeropuerto 288.5 km
Kozani 294.1 km
Préveza 301.5 km
Isla de Quíos Aeropuerto 313.7 km
Cefalonia Aeropuerto 315.7 km
Serres 316.0 km
Çeşme 331.8 km
Ioánina 333.0 km
Kavala/Chrisoupolis 336.2 km
Tympaki aeropuerto 337.4 km
Gevgelija 337.7 km
Heraclión Aeropuerto 338.7 km
Kastoriá Aeropuerto 341.5 km
Flórina 359.7 km
Kasteli Aeropuerto 359.7 km
Sandanski 364.7 km
Demir Kapija 372.4 km
Mitilene 379.7 km
Bitola 384.2 km
Berovo 386.1 km
Leros 394.2 km
Korçë 394.3 km
Prilep 396.8 km
Ayvalık 397.6 km
Samos Aeropuerto 399.4 km
Çanakkale 404.6 km
Štip 407.3 km
Alejandrópolis Aeropuerto 408.4 km
Dikili 410.7 km
Çiğli Air Base 412.7 km
Gjirokastra 415.6 km
Corfú 416.2 km
Sitía Aeropuerto 416.2 km
Sarandë 419.7 km
Ohrid Aeropuerto 426.4 km
Esmirna-Adnan Menderes aeropuerto 426.5 km
Ohrid St. Paul aeropuerto 428.9 km
Esmirna 429.1 km
Cos Aeropuerto 434.9 km
Kardzhali 435.3 km
Kuşadası 436.2 km
Balıkesir Koca Seyit aeropuerto 439.2 km
Skopje-Petrovec 450.5 km
Manisa 460.8 km
Bodrum 466.0 km
Lazaropole 469.2 km
Kuçovë 480.6 km
Pozharane 484.2 km
Elbasan 486.2 km
Milas-Bodrum aeropuerto 488.2 km
Datça 499.3 km
Vlorë 499.9 km
Peshkopi 500.2 km
Kárpatos 501.7 km
Aydın 503.0 km
Akhisar 511.4 km
Edirne 517.4 km
Isla de Sazan 520.9 km
Yzberish 524.3 km
Tirana 525.7 km
Balıkesir 535.9 km
Durrës 552.3 km
Tekirdağ 557.9 km
Bandırma 566.4 km
Kırklareli 575.2 km
Çorlu 600.2 km