When lakes freeze over with ice, it can be dangerous to stand or walk on the surface. Ice never freezes evenly and many variable can affect its thickness.
Freezing rain poses a hazard for both people and cars. It can be virtually invisible when it comes in contact with certain surfaces, such as roadways, making them very slick.
Avalanches are a particular threat since the situation which can bring on an avalanche can change quickly. Therefore, vigilance is required when in snowy mountain areas.
Blizzards are intense storms and especially hazardous in mountains, where the wind blows snow which can make visibility very poor and cause "whiteout" conditions.
Mountain temperatures can be dangerously cold. Wear insulating clothes in order to retain body heat. To avoid snow blindness, use sunglasses; they can help absorb the sun's UV rays.
