In general, 8 millimetres (0.
Ice storms can vary in time range from hours to days and can cripple small towns and large urban centers alike.
Blizzard — There are varying definitions for blizzards, both over time and by location.
 Ice storms also make unheated road surfaces too slick to drive upon.
In general, a blizzard is accompanied by gale-force winds, heavy snow (accumulating at a rate of at least 5 centimeters (2 in) per hour), and very cold conditions (below approximately -10 degrees Celsius or 14 F). Lately, the temperature criterion has fallen out of the definition across the United States
Snowstorm — A heavy fall of snow accumulating at a rate of more than 5 centimeters (2 in) per hour that lasts several hours.
There are many varieties and names for storms:
Ice storm — Ice storms are one of the most dangerous forms of winter storms. When surface temperatures are below freezing, but a thick layer of above-freezing air remains aloft, rain can fall into the freezing layer and freeze upon impact into a glaze of ice.
31 in) of accumulation is all that is required, especially in combination with breezy conditions, to start downing power lines as well as tree limbs.