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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 - Nea Penteli Distance
Tatoi Palace 9.5 km
El Venizelos 15.5 km
Athens Airport 16.3 km
Elliniko Airport 21.1 km
Elefsina Airport 33.4 km
Tanagra Airport 44.5 km
Skyros Airport 116.8 km
Skiathos 121.9 km
Syros Airport 136.7 km
Milos Airport 154.2 km
Nea Anchialos Airport 167.6 km
Tripoli Airport 169.9 km
Paros Airport 176.7 km
Mykonos 178.3 km
Lamia 178.7 km
Naxos 194.8 km
Naxos Airport 195.4 km
Kythira 202.9 km
Larissa National Airport 227.4 km
Kalamata 227.6 km
Santorini 241.6 km
Lemnos Airport 243.8 km
Chios Airport 255.8 km
Chania Intl. Airport 257.3 km
Methoni 270.0 km
Thessaloniki Airport 270.5 km
Patras Araxos Airport 271.1 km
Çeşme 273.9 km
Andravida 286.0 km
Serres 309.1 km
Kavala/Chrisoupolis 309.3 km
Heraklion Airport 312.6 km
Tympaki Airport 320.1 km
Mytilene 322.8 km
Kozani 325.9 km
Zakynthos Airport 331.7 km
Kastelli Airport 332.7 km
Leros 339.8 km
Ayvalık 341.3 km
Samos Airport 342.7 km
Gevgelija 351.0 km
Çanakkale 353.1 km
Dikili 353.5 km
Preveza 354.6 km
Çiğli Air Base 354.8 km
Sandanski 363.0 km
Alexandroupolis Airport 364.5 km
İzmir Adnan Menderes Airport 368.6 km
İzmir 371.2 km
Cephalonia Airport 373.0 km
Kastoria Airport 377.5 km
Kuşadası 378.9 km
Ioannina 379.7 km
Sitia Airport 380.2 km
Kos Airport 382.0 km
Balıkesir Koca Seyit Airport 383.3 km
Demir Kapija 388.1 km
Berovo 390.9 km
Florina 391.5 km
Kardzhali 401.5 km
Manisa 402.9 km
Bodrum 411.3 km
Bitola 414.1 km
Štip 422.0 km
Prilep 422.2 km
Musala 422.3 km
Plovdiv 426.2 km
Milas- Bodrum Airport 432.7 km
Korçë 433.2 km
Aydın 445.7 km
Datça 445.9 km
Akhisar 453.7 km
Karpathos 456.0 km
Kriva Palanka 457.2 km
Ohrid Airport 461.1 km
Gjirokastër 462.2 km
Ohrid St. Paul AP 463.6 km
Corfu 466.8 km
Sarandë 468.4 km
Skopje-Petrovec 470.8 km
Sofia 472.0 km
Edirne 473.4 km
Balıkesir 479.1 km
Mourgash 487.8 km
Lazaropole 501.7 km
Tekirdağ 506.1 km
Vranje 509.2 km
Bandırma 511.4 km
Pozharane 513.1 km
Tetovo 518.3 km
Kuçovë 523.5 km
Elbasan 525.2 km
Kırklareli 527.9 km
Peshkopi 533.8 km
Sliven 540.3 km
Vlorë 546.6 km
Çorlu 547.9 km
Leskovac 548.3 km
Kukës 561.0 km
Pristina Airport 561.4 km