ECMWF: Global weather forecast model from the "European Centre for Medium-Range Weather Forecasts"

4 times per day, from 06:00, 12:00, 18:00 and 00:00 UTC
This service is based on data and products of the European Centre for Medium-Range Weather Forecasts (ECMWF)
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Greenwich Mean Time:
12:00 UTC = 15:00 EET
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Yerden 10 metre yukardaki rüzgar durumu
Yerden 10 metre yukardaki ortalama rüzgar vektörlerinin, bu haritalarda kullanılan yatay ve dikey hatlar sistemi ile modellendirilmiş gösterimidir (Izo. Her 80 km). Genellikle, yerden 10 metre yukarıdarı için ölçülen gerçek rüzgar hızı modelde verilen hızdan biraz yavaştır. Ancak, burada hesaplanan rüzgar hızı gerçek hıza oldukça yakındır. Sonuçta, bu haritalar yelkenciler, planör, uçurtma planöri ve balon pilotları için kullanışlıdır. (Rüzgar-Çevirici)
Numerical weather prediction uses current weather conditions as input into mathematical models of the atmosphere to predict the weather. Although the first efforts to accomplish this were done in the 1920s, it wasn't until the advent of the computer and computer simulation that it was feasible to do in real-time. Manipulating the huge datasets and performing the complex calculations necessary to do this on a resolution fine enough to make the results useful requires the use of some of the most powerful supercomputers in the world. A number of forecast models, both global and regional in scale, are run to help create forecasts for nations worldwide. Use of model ensemble forecasts helps to define the forecast uncertainty and extend weather forecasting farther into the future than would otherwise be possible.

Wikipedia, Numerical weather prediction, of Feb. 9, 2010, 20:50 UTC).