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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 - Bağcılar Distance
Istanbul 4.9 km
Sarıyer 27.4 km
Kilyos 31.8 km
Istanbul 35.1 km
Istanbul / Sabiha Gokcen 52.1 km
Yalova Airport 58.1 km
Bursa 83.1 km
Çorlu 104.7 km
Yenişehir Airport 106.5 km
Yenişehir Airport 107.4 km
Cengiztopel 117.8 km
Bandırma 118.9 km
Tekirdağ 144.7 km
Bilecik 149.2 km
Balıkesir 170.7 km
Adapazarı 175.7 km
Kırklareli 193.9 km
Kütahya 199.1 km
Burgas 211.7 km
Burgas Airport 214.0 km
Eskişehir Airport 224.4 km
Zafer Havaalani 231.8 km
Akhisar 232.5 km
Uşak 233.4 km
Varna 238.6 km
Varna Airport 246.7 km
Balıkesir Koca Seyit Airport 249.0 km
Düzce 258.4 km
Edirne 262.5 km
Mangalia 276.5 km
Manisa 282.1 km
Çanakkale 285.8 km
Afyonkarahisar 287.1 km
Dikili 289.2 km
Ayvalık 292.1 km
Afyonkarahisar 293.2 km
Bolu 307.5 km
Güzelbahçe 314.2 km
Denizli 314.3 km
Constanța 314.5 km
Mytilene 314.7 km
Adamclisi 318.0 km
Çiğli Air Base 319.0 km
Medgidia 324.1 km
Sliven 326.4 km
Adnan Menderes Airport 326.8 km
Alexandroupoli Airport 326.9 km
Aydın 328.0 km
Mihail Kogălniceanu Airport 330.8 km
Zonguldak 331.2 km
Zonguldak 331.2 km
Cernavodă 339.5 km
Feteşti 348.1 km
Suleyman Demirel 348.1 km
Kuşadası 355.6 km
Călăraşi 356.7 km
Gura Portitei 359.9 km
Burdur 362.4 km
Razgrad 363.9 km
Isparta 366.8 km
Umirea 367.2 km
Casimcea 369.3 km
Muğla 373.6 km
Hârşova 374.7 km
Akşehir 383.0 km
Slobozia 385.1 km
Sfântu Gheorghe 387.7 km
Çeşme 389.3 km
Oltenița 390.4 km
Samos Airport 390.7 km
Milas- Bodrum Airport 392.1 km
Bartın 392.5 km
Kardzhali 393.1 km
Tulcea 396.8 km
Mahmudia 398.8 km
Chios Airport 401.0 km
Grivita 406.2 km
Maliuc 408.1 km
Gorna Oryahovitsa Airport 409.0 km
Sulina 416.3 km
Lemnos Airport 416.7 km
Bodrum 418.5 km
Mürted Air Base 422.9 km
Chiscani 424.8 km
Giurgiu 431.5 km
Etimesgut Air Base 439.0 km
Leros 439.6 km
Urziceni 440.4 km
Guvercinlik 446.0 km
Galați 448.1 km
Bucharest 455.7 km
Ankara Central 460.1 km
Buzău 463.7 km
Aurel Vlaicu Intl. Airport 464.1 km
Otopeni 465.4 km
Ankara/Esenboga 469.6 km
Plovdiv 470.1 km
Zimnicea 470.1 km
Kavala/Chrisoupolis 473.1 km
Valea Râmnicului 476.5 km