Movies: Weather machine

In the northern hemisphere, snow is produced by atmospheric low pressure areas that move in from the western Atlantic in the form of huge cloud masses. Snow is vital to the balance of mountain ecosystems. Many animal and plant species at high altitud...

When 13-year-old Allie Thompson and her best friend Sam happen upon a weather-making machine discarded by none other than Santa Claus, they use it to cause a snow day in Los Angeles. But when the machine gets out of hand, it threatens to ruin Christm...