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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.


Stations météo à proximité - Sifnos Distance
Milos Aéroport 38.2 km
Páros Aéroport 45.7 km
Syros Aéroport 55.3 km
Náxos Aéroport 73.4 km
Naxos 74.3 km
Mykonos 84.8 km
Santorin 97.2 km
Athènes Aéroport 130.0 km
El Venizelos 131.2 km
Ellinikó Aéroport 144.9 km
Tatoï 155.6 km
La Canée (Aéroport) 158.1 km
Éleusis Aéroport 171.3 km
Héraklion Aéroport 172.8 km
Tanagra Aéroport 190.2 km
Kastélli Aéroport 191.5 km
Tymbáki Aéroport 192.8 km
Cythère 201.6 km
Skýros Aéroport 204.1 km
Chios Aéroport 209.2 km
Tchesmé 221.4 km
Léros 232.9 km
Sitía Aéroport 234.0 km
Samos Aéroport 254.9 km
Skiathos 262.8 km
Tripoli Aéroport 264.3 km
Kos Aéroport 264.8 km
Kuşadası 296.0 km
Mytilène 297.2 km
Çiğli Air Base 298.6 km
Kalamata 300.7 km
Aéroport Adnan-Menderes 301.8 km
Bodrum 302.5 km
Lemnos Aéroport 303.2 km
Izmir 309.7 km
Néa Anchíalos Aéroport 313.8 km
Kárpathos 317.1 km
Lamia 320.0 km
Dikili 320.9 km
Ayvalık 321.7 km
Datça 329.5 km
Bodrum-Milas (Aéroport) 329.5 km
Methóni 336.1 km
Manisa 344.5 km
Aydın 359.8 km
Balıkesir Koca Seyit (Aéroport) 364.1 km
Çanakkale 369.1 km
Base aérienne de Larissa 373.6 km
Rhodes/Paradissi 379.0 km
Aéroport d'Araxos 386.8 km
Andravída 394.4 km
Marmaris 395.4 km
Akhisar 399.4 km
Kavala/Chrisoupolis 406.6 km
Muğla 407.1 km
Thessalonique-Makedonía (Aéroport) 410.6 km
Alexandroúpoli Aéroport 413.0 km
Zante Aéroport 434.2 km
Balıkesir 443.6 km
Dalaman 454.4 km
Kozáni 472.0 km
Préveza 483.1 km
Céphalonie Aéroport 484.0 km
Bandırma 492.5 km
Tobrouk 501.3 km
Tekirdağ 510.4 km
Ioánnina 518.4 km
Kastoriá Aéroport 522.9 km
Flórina 537.6 km
Koritza 577.6 km
Gjirokastër 601.0 km
Saranda 604.6 km
Istanbul 605.2 km
Al Marj 624.9 km
Benghazi Aéroport 704.1 km