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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 - Köseköy Distance
Cengiz Topel Naval Air Station 0.0 km
Adapazarı 57.9 km
Istanbul / Sabiha Gokcen 65.9 km
Bilecik 67.9 km
Yenişehir Airport 68.7 km
Yalova Airport 70.9 km
Yenişehir Airport 72.3 km
Istanbul 83.1 km
Sarıyer 96.7 km
Kilyos 104.0 km
Bursa 113.0 km
Istanbul 121.1 km
Eskişehir Airport 126.6 km
Kütahya 138.6 km
Düzce 141.0 km
Zafer Havaalani 169.3 km
Bolu 189.8 km
Afyonkarahisar 214.0 km
Uşak 216.9 km
Afyonkarahisar 217.9 km
Zonguldak 219.1 km
Zonguldak 219.1 km
Bandırma 221.4 km
Çorlu 222.5 km
Balıkesir 251.4 km
Tekirdağ 261.9 km
Bartın 281.0 km
Akşehir 292.9 km
Suleyman Demirel 293.0 km
Akhisar 296.0 km
Mürted Airfield Command 305.7 km
Isparta 306.8 km
Kırklareli 309.2 km
Burdur 310.3 km
Denizli 310.7 km
Burgas 313.6 km
Burgas Airport 314.2 km
Varna 316.2 km
Etimesgut Air Base 322.0 km
Mangalia 323.0 km
Varna Airport 327.5 km
Guvercinlik 329.0 km
Ankara Central 342.9 km
Balıkesir Koca Seyit Airport 345.4 km
Manisa 350.7 km
Ankara/Esenboga 352.0 km
Constanța 355.2 km
Aydın 370.9 km
Mihail Kogălniceanu Airport 375.7 km
Medgidia 377.7 km
Dikili 377.7 km
Edirne 379.6 km
Adamclisi 381.9 km
İzmir 385.3 km
Gura Portitei 385.5 km
Ayvalık 387.2 km
Muğla 392.3 km
Sfântu Gheorghe 392.6 km
Muratpaşa 393.0 km
Antalya 393.8 km
Çiğli Air Base 394.7 km
İzmir Adnan Menderes Airport 395.3 km
Çanakkale 395.9 km
Umirea 396.5 km
Cernavodă 398.2 km
Cihanbeyli 398.7 km
Konya 402.9 km
Mytilene 406.8 km
Feteşti 411.8 km
Kırıkkale 413.9 km
Çankırı 414.4 km
Kuşadası 414.8 km
Casimcea 415.6 km
Fethiye 419.3 km
Dalaman 419.9 km
Marmaris 429.5 km
Milas- Bodrum Airport 431.6 km
Hârşova 431.9 km
Călăraşi 434.5 km
Kastamonu 435.0 km
Sliven 436.9 km
Finike 439.4 km
Alexandroupolis Airport 443.4 km
İnebolu 445.4 km
Kaş 450.1 km
Samos Airport 454.3 km
Slobozia 457.5 km
Kastellorizo 459.0 km
Bodrum 461.6 km
Razgrad 462.9 km
Alanya 472.4 km
Çeşme 472.5 km
Datça 475.1 km
Rhodes/Paradissi 478.1 km
Grivita 478.2 km
Oltenița 481.5 km
Chios Airport 486.8 km
Leros 498.1 km
Kos Airport 504.6 km
Karaman 506.1 km