The definition of the weather categories and the selection of the cases of each category was done according to the instructions and recommendations of the World Meteorological Organization.
May characterized by a hot wave between 15-20/5 when a lot of maximum temperatures values were exceeded. In parallel a long lasting but not so intense dust episode took place. In contrast during the last ten days period the temperature declined rapidly and significant rainfalls, thunderstorms and snowfalls over mountainous mainland recorded. ..
