How its formed?
For a blizzard to form very cold, very dry air must bump into warm, moist air. Blizzards also form when a warm front and a cold front come together. Blizzards are areas of low pressure. Moisture is needed to form clouds to cause blizzards. Blizzards have winds that spiral inwards. The center of the blizzard is much colder than the surrounding air. It must have winds of 35 miles per hour. The temperature should be under 20 degrees to know if its a blizzard. The precipitation is snow, freezing rain, hail and sleet. The snow has to blow so hard that you can’t see more than 500 feet in front of you. If these conditions last 3 hours then its a blizzard.
Blizzard in the last 10 years
The old blizzard in 1888 killed more than 400 people dumping as much as 55 inches of snow in some areas. It costed 24 million dollars for all the repairs and damaged things.
The current blizzard in Chicago 1999 it dumped 22 inches of snow. It costed between .3 and .4 billion dollars. More than 73 people died.
Impact on Human Life
Blizzards can cause humans not being able to go or walk to school. To keep safe during a blizzard you can check the forecast and watch the weather. Another thing you can do to keep safe from a blizzard is to listen to the radio or TV for watches and warnings. You can also dress in several layers of clothing and wear a hat and gloves. Do not travel in a blizzard if its a really big deal.