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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 - Arachova Distance
Lamia 45.2 km
Nea Anchialos Airport 80.8 km
Tripoli Airport 98.1 km
Tanagra Airport 106.9 km
Elefsina Airport 115.1 km
Larissa National Airport 121.4 km
Skiathos 125.7 km
Patras Araxos Airport 133.9 km
Tatoi Palace 138.6 km
Elliniko Airport 140.1 km
Andravida 155.5 km
Kalamata 157.4 km
El Venizelos 158.7 km
Athens Airport 161.6 km
Methoni 195.0 km
Zakynthos Airport 203.2 km
Preveza 207.5 km
Kozani 208.9 km
Thessaloniki Airport 214.7 km
Skyros Airport 217.6 km
Kythira 229.2 km
Cephalonia Airport 234.7 km
Ioannina 236.0 km
Kastoria Airport 250.8 km
Florina 273.0 km
Gevgelija 276.0 km
Milos Airport 277.7 km
Syros Airport 283.1 km
Serres 287.9 km
Bitola 299.1 km
Korçë 300.6 km
Demir Kapija 305.8 km
Prilep 316.6 km
Gjirokastër 318.5 km
Paros Airport 319.4 km
Corfu 319.9 km
Sarandë 322.8 km
Sandanski 325.1 km
Mykonos 325.4 km
Lemnos Airport 329.8 km
Berovo 335.0 km
Ohrid Airport 335.9 km
Ohrid St. Paul AP 338.4 km
Naxos 340.2 km
Naxos Airport 340.5 km
Štip 340.9 km
Kavala/Chrisoupolis 341.0 km
Chania Intl. Airport 345.7 km
Skopje-Petrovec 375.6 km
Santorini 379.6 km
Lazaropole 380.3 km
Kuçovë 384.5 km
Kriva Palanka 385.1 km
Elbasan 392.0 km
Chios Airport 395.4 km
Musala 396.5 km
Pozharane 398.6 km
Vlorë 402.8 km
Tetovo 407.7 km
Peshkopi 410.2 km
Çeşme 414.1 km
Sazan 423.8 km
Tympaki Airport 424.0 km
Vranje 427.2 km
Yzberish 429.5 km
Heraklion Airport 430.6 km
Tirana 430.9 km
Sofia 437.9 km
Kukës 441.1 km
Alexandroupolis Airport 442.9 km
Plovdiv 444.9 km
Kardzhali 448.1 km
Mytilene 451.2 km
Kastelli Airport 451.9 km
Durrës 456.4 km
Çanakkale 457.2 km
Pristina Airport 458.5 km
Mourgash 463.0 km
Ayvalık 466.0 km
Leskovac 470.6 km
Dikili 483.1 km
Leros 487.0 km
Samos Airport 488.2 km
Santa Maria di Leuca 492.5 km
Shkodër 506.3 km
Sitia Airport 511.9 km
Lecce 526.8 km
Bar 542.8 km
Edirne 549.1 km
Podgorica 549.6 km
Podgorica 553.9 km
Tivat 592.8 km
Sliven 594.8 km
Nikšić 603.2 km
Dubrovnik Airport 642.7 km
Dubrovnik 663.9 km