San Agustín de Valle Fértil Warnings and Dangers

In the Cuyo region of Argentina (Mendoza, San Juan, San Luis and La Rioja provinces) you have a weather phenomenon called the Zonda Wind (viento zonda). My guide and I were going out for the afternoon to Ischigualasto when he asked me where my jacket was. I looked at him funny because the day was glorious, not a cloud in the sky, hot but dry and bearable. I told him that i wouldn't need a jacket,,,,,he insisted. You will thank me for it, he told me. Well sure enough, early in the afternoon came the wind, unrelenting. Though the temperature was high the wind was strong enough, bringing sand.

From May to November the zonda winds blow, usually starting in the early afternoon. At this elevation they can be strong, at higher elevations they will be much stronger. It is caused by the northeastward movements of the polar fronts. Somewhat dissipated by the Andes, the winds remain strong.

if you close your eyes sometimes you might think it is a human voice...kinda.