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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 - Haidari Distance
Elefsina Airport 11.5 km
Elliniko Airport 15.0 km
Tatoi Palace 20.1 km
El Venizelos 32.7 km
Tanagra Airport 34.2 km
Athens Airport 35.9 km
Skiathos 121.7 km
Skyros Airport 136.4 km
Tripoli Airport 145.4 km
Nea Anchialos Airport 155.9 km
Syros Airport 156.8 km
Lamia 160.7 km
Milos Airport 162.5 km
Kythira 188.4 km
Paros Airport 194.0 km
Mykonos 199.5 km
Kalamata 203.9 km
Naxos 214.0 km
Naxos Airport 214.4 km
Larissa National Airport 215.3 km
Methoni 246.3 km
Patras Araxos Airport 247.2 km
Santorini 256.6 km
Chania Intl. Airport 256.7 km
Andravida 261.7 km
Lemnos Airport 263.5 km
Thessaloniki Airport 267.8 km
Chios Airport 280.3 km
Çeşme 298.4 km
Zakynthos Airport 307.2 km
Serres 312.9 km
Kozani 313.3 km
Heraklion Airport 320.7 km
Kavala/Chrisoupolis 321.6 km
Tympaki Airport 324.1 km
Preveza 332.8 km
Kastelli Airport 341.3 km
Gevgelija 346.4 km
Mytilene 347.3 km
Cephalonia Airport 349.0 km
Ioannina 360.8 km
Leros 362.0 km
Kastoria Airport 363.2 km
Sandanski 364.8 km
Ayvalık 365.6 km
Samos Airport 366.3 km
Çanakkale 375.7 km
Dikili 378.1 km
Florina 379.1 km
Çiğli Air Base 379.4 km
Demir Kapija 382.6 km
Alexandroupolis Airport 384.1 km
Berovo 390.0 km
İzmir Adnan Menderes Airport 393.0 km
Sitia Airport 393.1 km
İzmir 395.7 km
Bitola 402.5 km
Kuşadası 402.8 km
Kos Airport 403.3 km
Balıkesir Koca Seyit Airport 407.5 km
Prilep 412.6 km
Štip 417.0 km
Kardzhali 417.0 km
Korçë 417.8 km
Musala 426.7 km
Manisa 427.5 km
Bodrum 433.6 km
Plovdiv 437.7 km
Gjirokastër 443.4 km
Corfu 446.2 km
Ohrid Airport 447.6 km
Sarandë 448.7 km
Ohrid St. Paul AP 450.1 km
Kriva Palanka 454.1 km
Milas- Bodrum Airport 455.5 km
Skopje-Petrovec 463.5 km
Datça 467.5 km
Aydın 469.6 km
Karpathos 473.7 km
Sofia 475.5 km
Akhisar 478.3 km
Lazaropole 489.1 km
Mourgash 492.8 km
Edirne 493.1 km
Pozharane 502.1 km
Balıkesir 503.6 km
Vranje 504.6 km
Kuçovë 506.4 km
Tetovo 508.2 km
Elbasan 509.8 km
Peshkopi 520.9 km
Vlorë 527.8 km
Tekirdağ 528.9 km
Bandırma 535.3 km
Leskovac 544.6 km
Yzberish 548.5 km
Kırklareli 549.0 km
Kukës 549.0 km
Sazan 549.1 km
Tirana 550.0 km