Snowfall can be heavy once it snows. Light snowfall occurs in winter, but major snows are rare. The northern mountainous regions have cold winters with occasional heavy snows, sometimes causing extensive flooding. It rarely snows in winter and the summer temperatures are mild to warm. Snow is very rare occurrence in Bar, it usually snows once in a few years. In the winter it frequently snows and the mountain is often snowcapped. It snows an average of 2.3 days a year, and the snow rarely remains long. It snows once or twice every winter. Aside from occasional heavy snows in winter, severe weather is very rare. Winter snows can make supplying the fortress impossible. On average, it snows thirty-seven days during the winter. Much of the state is subject to at least occasional winter snows. The vehicle needed to move quickly and easily through the winter snows of Norway. It snows only rarely, on higher mountain peaks. Flows are characterized by climate (snows, rain, and ice melting) and gradient.