The north wind is strong cold wind coming from the north , polar origin, using the north of the Pyrenees and southwest of Massif French Central as acceleration zone. Its speed has reached 200 km / h. When the wind blows the pure blue sky is usually presented.
As can be seen?: manifests itself in relation to an input stream of cold dry air, the Polar Continental origin. Circumstance or feature that explains their greater frequency / prevalence in the winter months, when anticyclones of Siberia extends to Central Europe promoting the arrival of this cold air current. The current after invaded the Po Valley, about the obstacle force representing the Apennines and bursts violently into the Gulf of Genoa and the Tyrrhenian.
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