•The western is the prevailing wind direction for Annaba, Bejaia and M’sila which
have respectively16%, 30% and 28% of episodes. However, the prevailing wind direction for
Oran is the north with 20 % of episodes, the eastern sector represents 15 % of wind
frequencies for Adrar and the West- North –West (WNW) directions represents 28 % of
episodes for Kaser-Chellala.