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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 - Chalandri Distance
Tatoi Palace 11.1 km
Elliniko Airport 12.6 km
El Venizelos 17.1 km
Athens Airport 19.8 km
Elefsina Airport 26.8 km
Tanagra Airport 42.6 km
Skiathos 124.7 km
Skyros Airport 125.4 km
Syros Airport 141.3 km
Milos Airport 153.3 km
Tripoli Airport 161.2 km
Nea Anchialos Airport 166.3 km
Lamia 174.8 km
Paros Airport 179.9 km
Mykonos 183.6 km
Kythira 195.0 km
Naxos 199.0 km
Naxos Airport 199.4 km
Kalamata 218.7 km
Larissa National Airport 226.1 km
Santorini 243.7 km
Lemnos Airport 252.5 km
Chania Intl. Airport 253.4 km
Methoni 261.0 km
Chios Airport 263.8 km
Patras Araxos Airport 263.9 km
Thessaloniki Airport 272.8 km
Andravida 278.4 km
Çeşme 281.8 km
Heraklion Airport 311.9 km
Serres 313.6 km
Kavala/Chrisoupolis 316.3 km
Tympaki Airport 317.8 km
Zakynthos Airport 323.9 km
Kozani 324.5 km
Mytilene 331.4 km
Kastelli Airport 332.2 km
Leros 345.7 km
Preveza 348.8 km
Samos Airport 349.6 km
Ayvalık 350.1 km
Gevgelija 352.7 km
Çanakkale 362.1 km
Dikili 362.1 km
Çiğli Air Base 362.9 km
Cephalonia Airport 365.7 km
Sandanski 366.9 km
Alexandroupolis Airport 373.2 km
Kastoria Airport 375.4 km
Ioannina 375.4 km
İzmir Adnan Menderes Airport 376.4 km
İzmir 379.1 km
Sitia Airport 381.5 km
Kuşadası 386.1 km
Kos Airport 387.4 km
Demir Kapija 389.4 km
Florina 390.1 km
Balıkesir Koca Seyit Airport 392.1 km
Berovo 393.9 km
Kardzhali 409.4 km
Manisa 411.0 km
Bitola 413.1 km
Bodrum 417.4 km
Prilep 422.0 km
Štip 423.6 km
Musala 427.0 km
Korçë 430.6 km
Plovdiv 433.0 km
Milas- Bodrum Airport 439.1 km
Datça 451.5 km
Aydın 452.9 km
Gjirokastër 458.1 km
Ohrid Airport 459.3 km
Kriva Palanka 459.4 km
Karpathos 459.5 km
Corfu 461.7 km
Ohrid St. Paul AP 461.9 km
Akhisar 461.9 km
Sarandë 463.7 km
Skopje-Petrovec 471.4 km
Sofia 476.5 km
Edirne 482.1 km
Balıkesir 487.8 km
Mourgash 492.7 km
Lazaropole 500.3 km
Vranje 510.9 km
Pozharane 512.4 km
Tekirdağ 515.1 km
Tetovo 517.9 km
Kuçovë 520.1 km
Bandırma 520.3 km
Elbasan 522.6 km
Peshkopi 532.3 km
Kırklareli 536.8 km
Vlorë 542.4 km
Sliven 548.6 km
Leskovac 550.3 km
Çorlu 556.9 km
Kukës 559.8 km
Yzberish 561.5 km