A winter storm can range from moderate snow over a few hours to blizzard conditions that last several days. Some winter storms may be large enough to affect several states while others may affect only a single community. All winter storms are accompanied by low temperatures and blowing snow, which can severely reduce visibility. A severe winter storm is one that drops four or more inches of snow during a 12-hour period or six or more inches during a 24 hour span. An ice storm occurs when freezing rain falls and freezes immediately on impact.
All winter storms make walking and driving extremely hazardous.
Indicates that severe winter weather may affect your area. Indicates that severe winter weather conditions are definitely on the way. Large amounts of falling or blowing snow and sustained winds of at least 35 miles per hour are expected for several hours. Is issued if travel is expected to be difficult or dangerous. Frostbite is a severe reaction to cold exposure that can permanently damage its victims.