Halny is a foehn wind that blows in southern Poland and in Slovakia in the Tatra Mountains of the Carpathians. The most turbulent halny blows in Podhale region of southern Poland, coming from the South, down the slopes of the Tatra Mountains; in Slovakia, on the other side of the mountains, it comes from the North. Halny is a warm windstorm that blows through the valleys. It is often disastrous; ripping off roofs, causing avalanches and, according to some people, can have some influence on mental states.