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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 - Megara Distance
Elefsina Airport 25.6 km
Tanagra Airport 40.7 km
Elliniko Airport 44.7 km
Tatoi Palace 51.8 km
El Venizelos 65.3 km
Athens Airport 68.8 km
Tripoli Airport 113.7 km
Skiathos 124.0 km
Lamia 135.5 km
Nea Anchialos Airport 140.1 km
Skyros Airport 162.5 km
Kalamata 174.2 km
Kythira 177.5 km
Milos Airport 182.7 km
Syros Airport 187.9 km
Larissa National Airport 197.6 km
Patras Araxos Airport 214.1 km
Methoni 216.9 km
Paros Airport 222.6 km
Andravida 228.3 km
Mykonos 231.3 km
Naxos 244.0 km
Naxos Airport 244.3 km
Thessaloniki Airport 262.5 km
Chania Intl. Airport 264.7 km
Zakynthos Airport 273.8 km
Santorini 282.6 km
Lemnos Airport 288.5 km
Kozani 294.1 km
Preveza 301.5 km
Chios Airport 313.7 km
Cephalonia Airport 315.7 km
Serres 316.0 km
Çeşme 331.8 km
Ioannina 333.0 km
Kavala/Chrisoupolis 336.2 km
Tympaki Airport 337.4 km
Gevgelija 337.7 km
Heraklion Airport 338.7 km
Kastoria Airport 341.5 km
Florina 359.7 km
Kastelli Airport 359.7 km
Sandanski 364.7 km
Demir Kapija 372.4 km
Mytilene 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 Airport 399.4 km
Çanakkale 404.6 km
Štip 407.3 km
Alexandroupolis Airport 408.4 km
Dikili 410.7 km
Çiğli Air Base 412.7 km
Gjirokastër 415.6 km
Corfu 416.2 km
Sitia Airport 416.2 km
Sarandë 419.7 km
Ohrid Airport 426.4 km
İzmir Adnan Menderes Airport 426.5 km
Ohrid St. Paul AP 428.9 km
İzmir 429.1 km
Kos Airport 434.9 km
Kardzhali 435.3 km
Kuşadası 436.2 km
Balıkesir Koca Seyit Airport 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 Airport 488.2 km
Datça 499.3 km
Vlorë 499.9 km
Peshkopi 500.2 km
Karpathos 501.7 km
Aydın 503.0 km
Akhisar 511.4 km
Edirne 517.4 km
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