Almost every area of the United States has received snow, even Florida and Texas. That's the number 10 followed by 24 zeros. Snowflakes are made of many snow crystals. Most snowflakes are less than one-half inch across. Under certain conditions, usually requiring near-freezing temperatures, light winds, and unstable atmospheric conditions, much larger and irregular flakes close to two inches across can form.
Snow can form at a variety of temperatures.
In order for snow to form, the temperate has to be near or below 32 degrees Fahrenheit. Even though 32 degrees Fahrenheit is the highest temperature that snow can form in, it can form in much colder temperatures. Usually, the temperature during most snowstorms is between 15 degrees Fahrenheit and 32 degrees Fahrenheit. Based on records kept by the National Weather Service between 1961 and 1990, Rochester, New York is the snowiest city in the United States. Science Spin is published as a four-page supplement to Weekly Reader and offered 7 times throughout the school year.