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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.


Estaciones meteorológicas cercanas - Vartholomio Distancia
Andravida 11.6 km
Zacinto Aeropuerto 36.8 km
Patras Araxos aeropuerto 39.4 km
Cefalonia Aeropuerto 82.7 km
Modona 119.1 km
Préveza 120.9 km
Kalamata 121.8 km
Trípoli Aeropuerto 137.5 km
Lamía 173.7 km
Ioánina 197.4 km
Nea Anjíalos Aeropuerto 226.9 km
Nacional de Lárisa aeropuerto 228.7 km
Corfú 233.1 km
Sarandë 250.2 km
Citera 258.8 km
Gjirokastra 260.3 km
Kozani 261.9 km
Eleusis Aeropuerto 262.5 km
Tanagra Aeropuerto 264.1 km
Kastoriá Aeropuerto 269.9 km
Elliniko aeropuerto 281.2 km
Tatoi 288.9 km
Scíathos 290.5 km
Korçë 291.6 km
El Venizelos 302.5 km
Flórina 305.0 km
Atenas Aeropuerto 306.2 km
Bitola 332.4 km
Vlorë 333.3 km
Macedonia aeropuerto 338.1 km
Kuçovë 339.8 km
Ohrid Aeropuerto 340.4 km
Ohrid St. Paul aeropuerto 342.4 km
Isla de Sazan 349.5 km
Prilep 363.4 km
Elbasan 366.7 km
Gevgelija 370.4 km
Santa María de Leuca 378.7 km
Esciros Aeropuerto 383.0 km
Milo Aeropuerto 383.5 km
Demir Kapija 386.9 km
Lazaropole 386.9 km
Yzberish 395.2 km
Tirana 396.0 km
La Canea aeropuerto 404.3 km
Peshkopi 407.9 km
Durrës 409.4 km
Pozharane 417.3 km
Štip 418.0 km
Siros Aeropuerto 419.5 km
Lecce 421.5 km
Serres 423.1 km
Skopje-Petrovec 429.5 km
Berovo 439.2 km
Sandanski 445.3 km
Paros Aeropuerto 445.3 km
Miconos 463.9 km
Brindisi/Casale 465.9 km
Naxos Aeropuerto 470.6 km
Naxos 470.8 km
Crotona 475.7 km
Tympaki aeropuerto 489.5 km
Santorini 493.5 km
Lemnos Aeropuerto 496.2 km
Kavala/Chrisoupolis 496.4 km
Grottaglie 507.3 km
Heraclión Aeropuerto 512.7 km
Kasteli Aeropuerto 533.8 km
Kardzhali 605.0 km
Alejandrópolis Aeropuerto 607.7 km