During winter, the polar region is especially cold because the sun does not rise there for weeks or months at a time. Cold, dry air moves south from this region, bringing cold weather. Storms move from west to east along the southern edge of the cold air. In the United States, winter storms produce large snowfalls in some areas. The most snow falls in the western mountains and in much of the northern region east of the Rocky Mountains.
Many winter storms bring rain to warmer southern areas.
The lowest winter temperatures usually occur in the middle of all continents. You can see all the different cards I have available at Annie's Card Shop . Annie's Home Page. I thank the Lord for graphics artists without them these pages would not be the same. Please visit Annie's List of Great Graphics Spots for a list of their links.